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Proposal Update for IEEE 802.15.3-COP

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					     September, 2003                                                      doc.: IEEE 802.15-03/383r0
 Project: IEEE P802.15 Working Group for Wireless Personal Area Networks (WPANs)
Submission Title: [CRL-UWB Consortium’s Optimized Soft-Spectrum UWB PHY Proposal Update for
IEEE 802.15.3a]
Date Submitted: [15 September, 2003]
Source: [Ryuji Kohno, Honggang Zhang, Kenichi Takizawa] Company [ (1) Communications Research
Laboratory (CRL), (2) CRL-UWB Consortium ]
Connector’s Address [3-4, Hikarino-oka, Yokosuka, 239-0847, Japan]
Voice:[+81-468-47-5101], FAX: [+81-468-47-5431],
E-Mail:[kohno@crl.go.jp, honggang@crl.go.jp, takizawa@crl.go.jp ]
Re: [IEEE P802.15 Alternative PHY Call For Proposals, IEEE P802.15-02/327r7]
Abstract: [Recent optimization of CRL’s Soft-Spectrum Adaptation(SSA) are described after brief
review of SSA. We perform various SSA schemes as cases with optimized kernel functions and pulse
shaping, which are able to be introduced to implement either single-band or multiband systems.
Moreover, various harmonization based on SSA are investigated considering co-existence, interference
avoidance, matching with regulatory spectral mask, and high data rate.]
Purpose: [For investigating the characteristics of High Rate Alternative PHY standard in 802.15TG3a,
based on Soft-Spectrum Adaptation, pulse waveform shaping and Soft-Spectrum transceiver.]
Notice: This document has been prepared to assist the IEEE P802.15. It is offered as a basis for
discussion and is not binding on the contributing individual(s) or organization(s). The material in this
document is subject to change in form and content after further study. The contributor(s) reserve(s) the
right to add, amend or withdraw material contained herein.
Release: The contributor acknowledges and accepts that this contribution becomes the property of IEEE
and may be made publicly available by P802.15.
     Submission                                   Slide 1                           CRL-UWB Consortium
September, 2003                                       doc.: IEEE 802.15-03/383r0



                      Proposal Update:
           CRL-UWB Consortium’s
        Optimized Soft-Spectrum UWB
       PHY Proposal for IEEE 802.15.3a
                               Ryuji KOHNO
                    Director, UWB Technology Institute, CRL
                    Professor, Yokohama National University
                          Chair, CRL-UWB Consortium
                  Honggang ZHANG              Kenichi TAKIZAWA
        Communications Research Laboratory(CRL)
               & CRL-UWB Consortium
Submission                          Slide 2                    CRL-UWB Consortium
September, 2003                                 doc.: IEEE 802.15-03/383r0



    Major Contributors For This Proposal Update

        Ryuji KOHNO             Yokohama National University
        Shinsuke HARA           Osaka University
        Shigenobu SASAKI        Niigata University

        Tetsuya YASUI           CRL-UWB Consortium
        Honggang ZHANG          CRL-UWB Consortium
        Kamya Y. YAZDANDOOST    CRL-UWB Consortium
        Kenichi TAKIZAWA        CRL-UWB Consortium
        Yuko RIKUTA             CRL-UWB Consortium




Submission                     Slide 3                   CRL-UWB Consortium
  September, 2003                            doc.: IEEE 802.15-03/383r0

                    CRL-UWB Consortium
   ● Organization 
      UWB Technology Institute of CRL and associated
      over 30 Manufacturers and Academia.
   ● Aim 
     ■ R&D and regulation of UWB wireless systems.
     ■ Channel measurement and modeling with experimental
           analysis of UWB system test-bed in band (960MHz,
         3.1- 10.6GHz, 22-29GHz, and over 60GHz).
     ■ R&D of low cost module with higher data rate over
         100Mbps.
    ■ Contribution in standardization with ARIB, MMAC,
and MPHPT in Japan.
  Submission                    Slide 4               CRL-UWB Consortium
September, 2003                                 doc.: IEEE 802.15-03/383r0


             Major Members of CRL-UWB Consortium

   Takahiro YAMAGUCHI    Advantest Corporation
   Tasuku TESHIROGI       Anritsu Corporation
   Hideaki ISHIDA         CASIO Computer Co., Ltd.
   Hiroyo OGAWA          Communications Research Laboratory
   Toshiaki MATSUI       Communications Research Laboratory
   Akifumi KASAMATSU     Communications Research Laboratory
   Tomohiro INAYAMA      Fuji Electric Co., Ltd.
   Toshiaki SAKANE       Fujitsu Limited
   Yoichi ISO            Furukawa Electric Co., Ltd.
   Yoshinori OHKAWA      Hitachi Cable, Ltd.
   Yoshinori ISHIKAWA    Hitachi Communication Technologies, Ltd.
   Masatoshi TAKADA      Hitachi Kokusai Electric Inc.
   Satoshi SUGINO         Matsushita Electric Works, Ltd.
   Makoto SANYA          Matsushita Electric Industrial Co., Ltd.
   Tetsushi IKEGAMI      Meiji University


Submission                   Slide 5                     CRL-UWB Consortium
September, 2003                                doc.: IEEE 802.15-03/383r0



    Major Members of CRL-UWB Consortium (cont.)

    Yoshiaki KURAISHI      NEC Engineering, Ltd.
    Makoto YOSHIKAWA       NTT Advanced Technology Corporation
    Yoshihito SHIMAZAKI    Oki Electric Industry Co., Ltd.
    Masami HAGIO           Oki Network LSI Co., Ltd.
    Toru YOKOYAMA         OMRON Corporation
    Hiroyuki NAGASAKA      Samsung Yokohama Research Institute
    Sumio HANAFUSA         SANYO Electric Co., Ltd.
    Makoto ITAMI          Science University of Tokyo
    Hideyo IIDA           Taiyo Yuden Co., Ltd.
    Eishin NAKAGAWA       Telecom Engineering Center
    Takehiko KOBAYASHI    Tokyo Denki University
    Kiyomichi ARAKI       Tokyo Institute of Technology
    Jun-ichi TAKADA       Tokyo Institute of Technology



Submission                    Slide 6                   CRL-UWB Consortium
 September, 2003                                 doc.: IEEE 802.15-03/383r0


                   Outline of Presentation
1.  Summary of pervious Soft-Spectrum Adaptation (SSA) proposals of
    CRL-UWB Consortium
2. Optimized Soft-Spectrum Adaptation (SSA)
  2.1 Optimized pulse shaping for SSA
  2.2 Optimized modulation scheme
  2.3 Channel coding and decoding
  2.4 Realization of SSA transceiver
  2.5 Applicable antennas
  2.6 Pre-equalization for pulse shape calibration
  2.7 Link budget estimation
3. Harmonization based on SSA with SXI and MBOA UWB systems
  3.1 Harmonization with XSI’s DS-UWB proposal
  3.2 Harmonization with MBOA’s proposal
4. Concluding remarks and Backup materials



 Submission                     Slide 7                   CRL-UWB Consortium
September, 2003             doc.: IEEE 802.15-03/383r0




             1. Summary of
Previous CRL-UWB Consortium’s Proposal
 on Soft-Spectrum Adaptation(SSA) UWB
       for IEEE802.15.3a WPANs




Submission        Slide 8            CRL-UWB Consortium
September, 2003                                        doc.: IEEE 802.15-03/383r0

   1.1 What is Soft-Spectrum Adaptation UWB ?
 Basic Philosophy  Soft-Spectrum Adaptation (SSA)
 Design a proper pulse waveform with high frequency
  efficiency corresponding to any frequency mask.
 Adjust transmitted signal’s spectra in flexible so as to
  minimize interference with coexisting systems.




                       1
                  
                      m




             0

                           Soft-Spectrum Adaptation(SSA)
Submission                             Slide 9                  CRL-UWB Consortium
   September, 2003                                                  doc.: IEEE 802.15-03/383r0
             Basic Formulation
             N                                                Example of Pulse Generator
  f (t )    f
             k 1
                    k   (t )       Synthesize a proper
                                   pulse waveform
In case of multiband, a kernel function is
a sinusoidal function.
In case of impulse radio, a kernel function
is a Gaussian, Hermitian pulse function etc.

                                                               Feasible Solution: Pulse
                                                              design satisfying Spectrum
                                                                         Mask

                                                  Divide (spread-and-shrink ) the whole
                                                 bandwidth into several sub-bands 
                                                 Soft Spectrum (spectrum matching)
                                                  Pulse synthesized by several pulses
                                                 that have different spectra 
                               N division        Soft Spectrum, M-ary signaling
   Submission                                      Slide 10                  CRL-UWB Consortium
   September, 2003                                                                       doc.: IEEE 802.15-03/383r0

    Soft-Spectrum Adaptation (SSA) with Flexible Band Plan
          Single-band           Dual- or Triple-band                                          Multi-band
                                                  5 GHz
                                                  W-LAN




                                  1   2   3   4    5   6   7   8   9   10 11                       N division
                                                                               f [GHz]


In the future, if the restricting ruggedness of regional spectral mask (e.g. FCC mask)
    is eased, band allocation can be extended below 3.1 GHz or above 10.6 GHz.




                                                                               N+α division

                Soft-Spectrum Adaptation (SSA) can correspond freely
   Submission                                     Slide 11                                        CRL-UWB Consortium
September, 2003                           doc.: IEEE 802.15-03/383r0



             1.2 Soft-Spectrum Adaptation(SSA)
                        Classification

    (1) Free-Verse Type of SSA
        A kernel function is non-sinusoidal, e.g.
          Gaussian, Hermitian pulse etc.
        Single band, Impulse radio

    (2) Geometrical Type of SSA
         A kernel function is sinusoidal with different
          frequency.
         Multiband with carriers and Multi-carrier

Submission                  Slide 12               CRL-UWB Consortium
September, 2003                                                 doc.: IEEE 802.15-03/383r0

   (1) Free-verse Type Soft-Spectrum Adaptation
  Freely design pulse waveforms by synthesizing pulses,
   e.g. overlapping and shifting



                                                     2.4GHz         5.2GHz

                       time                                    frequency

            K-3 Free-verse Soft-Spectrum Adaptation pulse
    (Note: band notches clearly happen at 2.4 and 5.2 GHz as well)



                                                          1
                                                      
                                                          m

                                                0
                        time                                   frequency

                  K-4 Free-verse Soft-Spectrum Adaptation pulse
                    (Note: pulse waveform has more freedom)
Submission                           Slide 13                                CRL-UWB Consortium
September, 2003                                                                            doc.: IEEE 802.15-03/383r0


         Order 0 to 3                                                    Order 0 to 3
 0.3                                                             0

                                                               -5
 0.2
                                                               -10
 0.1
                                                               -15
  0
                                                               -20
-0.1                                                           -25

-0.2                                                           -30
  -1.5       -1    -0.5        0        0.5   1          1.5         3       4    5       6      7        8       9       10
                                                         -9                                                                       9
                          Time [nsec]             x 10                                  Frequency [GHz]                    x 10

         Order 4 to 7                                                     Order 4 to 7
 0.3                                                             0

 0.2                                                            -5
 0.1
                                                               -10
  0
                                                               -15
-0.1
                                                               -20
-0.2

-0.3                                                           -25

-0.4                                                           -30
  -1.5       -1    -0.5        0        0.5   1          1.5         3       4     5       6     7            8       9    10
                          Time [nsec]             x 10
                                                         -9                              Frequency [GHz]                       x 10
                                                                                                                                      9




          Modified Hermitian : Free-verse Soft-Spectrum Adaptation pulse
                 (Note: These pulses are mutually orthogonal)
Submission                                           Slide 14                                        CRL-UWB Consortium
September, 2003                                                                 doc.: IEEE 802.15-03/383r0

(2) Geometrical Type Soft-Spectrum Adaptation
 Freely design pulse waveforms using various geometrical
type envelopes
               1                                              1

             0.8                                           0.8

             0.6
                                                           0.6
             0.4
                                                           0.4
             0.2
                                                           0.2
               0
                                                              0
             -0.2
                                                          -0.2
             -0.4

             -0.6                                         -0.4

             -0.8                                         -0.6




                        Triangular-type envelope                  Exponential-type envelope
                                                              1
                0.8
                                                          0.8
                0.6
                                                          0.6
                0.4
                                                          0.4
                0.2
                                                          0.2
                    0
                                                              0
               -0.2                                       -0.2
               -0.4                                       -0.4

               -0.6                                       -0.6

               -0.8                                       -0.8



                         Cosine-type envelope                     Gaussian-type envelope
Submission                                         Slide 15                              CRL-UWB Consortium
   September, 2003                                    doc.: IEEE 802.15-03/383r0

      Global Coexistence with other Potential Interferences


Multiband/OFDM:
Only (b) is available
SSA:
Both (a) and (b) are
available


      (a) Use of frequency band having low            (b) Simply eliminate the
       emission limit, but the same pulse energy is   band if other services
       available by using wider bandwidth.            exist.

   If more potential interferer should be considered, (b) does
  not work because it simply reduce the signal energy.
   Soft-Spectrum Adaptation (SSA) approach provides more
  option to overcome future potential coexistence issue.
   Submission                           Slide 16               CRL-UWB Consortium
  September, 2003                            doc.: IEEE 802.15-03/383r0

1.3 Advantages of Soft-Spectrum Adaptation (SSA)
  Soft-Spectrum Adaptation (SSA) can adapt signal spectra to
 any spectral requirement by flexible pulse waveform shaping
 similar to Software Defined Radio (SDR).
 1. Global regulation satisfaction: SSA can flexibly adjust UWB
 signal spectrum so as to match with spectral restriction in
 transmission power, i.e. spectrum masks.
 2. Interference avoidance for co-existence: SSA can adaptively
 avoid interference from and to co-existing systems in the same
 band and maximize spectral efficiency.
 3. Harmonization for various proposed systems: SSA is good
 for harmonization among different UWB systems because SSA
 includes various proposed UWB systems as its special case, e.g.
    XSI’s DS-CDMA as a case of Free-verse type SSA
    MBOA’s MB-OFDM as a case of Geometrical type SSA
 4. Future system version-up: SSA is so scalable as to accept
 future UWB systems with better performance like SDR.
  Submission                  Slide 17                CRL-UWB Consortium
    September, 2003                                                               doc.: IEEE 802.15-03/383r0

  Harmonization Based on Soft-Spectrum Adaptation
                              Kernel functions

                                                               ST Microelectronics
                 SSA type
                                  Adaptive


                                                          Mitsubishi
                   Free-         Gaussian
                   verse
                                                   Single-band            Optimized
   Soft-                                                                    SSA
                                 Modulated                                                              Global
Spectrum
Adaptation
                              modified Hermitian                                                       standard
  (SSA)                                             Dual-band                    XSI
                                                                        TF Hopping
                                XSI Wavelet        Multiband
                   Geo-                                                Intel, Wisair
                   metrical                        with carrier




                                                                                             MB-OFDM
                                                                        TF Coding

                                                                       GA, Philips
                                 Sinusoidal                               OFDM
                                                    Multi-carrier
                                                                            TI
    Submission                                      Slide 18                               CRL-UWB Consortium
 September, 2003                                    doc.: IEEE 802.15-03/383r0


                    Outline of Presentation
1.  Summary of pervious Soft-Spectrum Adaptation (SSA) proposals of CRL-
    UWB Consortium
2. Optimized Soft-Spectrum Adaptation (SSA)
  2.1 Optimized pulse shaping for SSA
  2.2 Optimized modulation scheme
  2.3 Channel coding and decoding
  2.4 Realization of SSA transceiver
  2.5 Applicable antennas
  2.6 Pre-equalization for pulse shape calibration
  2.7 Link budget estimation
3. Harmonization based on SSA with SXI and MBOA UWB systems
  3.1 Harmonization with XSI’s DS-UWB proposal
  3.2 Harmonization with MBOA’s proposal
4. Concluding remarks and Backup materials



 Submission                       Slide 19                   CRL-UWB Consortium
      September, 2003                                                      doc.: IEEE 802.15-03/383r0

                   2.1. Optimized Pulse Shaping for SSA
                                                                Low peak
Optimized pulse shape
 •     Mutually orthogonal
        –   Available to
           Pulse shape multiple access
           Pulse shape modulation
 •     Available notches
        –   In order to reduce narrowband
            interferences
 •     Non-spiky in both time and
       frequency domain

Free-verse Type + Geometrical Type
(Envelope)        (Pulsed Sine)
Ex.: Modified Hermitian Pulsed
      Sinusoidal Wavelets
     Pulse width and center frequency
     is adaptively changeable.                    Time [nsec]               notches    Frequency [GHz]

      Submission                            Slide 20                                  CRL-UWB Consortium
     September, 2003                                                                  doc.: IEEE 802.15-03/383r0

      Pulse shape orthogonality can be employed to 1) user / piconet
      multiple access and/or 2) multilevel (M-ary) data modulation
     1) Pulse shape multiple access                           2) Pulse shape modulation
    • Orthogonality is applied to identify user/piconet        • Orthogonality is applied to increase level of M-ary
      for multiple access                                        data modulation for multilevel data transmission.
          Piconet A                                                  00

          Piconet B                                                  01

          Piconet C                                                  10

          Piconet D                                                  11


    Interference reduction                                                                                    Not use


•    Narrowband interferences is                                                                              Not use
     reduced by appropriate selection of
     pulse-shapes.
                                                                            Not slected



                         Narrowband                                         Not use
                         interferences
                                                              Frequency [GHz]                   Frequency [GHz]

     Submission                                           Slide 21                             CRL-UWB Consortium
September, 2003                                              doc.: IEEE 802.15-03/383r0

             2.2 Optimized Modulation scheme
 M-ary bi-orthogonal keying (M-ary BOK)
 •     Walsh-Hadamard (WH) codes with length 8
 •     2 WH codes are assigned to each piconet.
 •     4-ary BOK encodes 2 bits by using the assigned 2 WH codes

Pulse shape modulation
 • Simple mapping: Information binary bits are mapped into pulse
   shapes                                  M-ary PSM can transmit log M           2
                  00     01        10          11
                                                    bits/pulse.

 • Pulse shape keying: Information binary bits are mapped into
   permutation of pulse shapes
     0000                                           M-ary pulse shape keying can
                                                    transmit floor(log2(M !)) bits/pulse.
     ・・・・




     1111


Submission                          Slide 22                            CRL-UWB Consortium
September, 2003                                                      doc.: IEEE 802.15-03/383r0


  Supported bit rates with SSA

         Target                    Outer                Inner              Channel     Coding
                     Bit Rate                                    PRI*2
        date rate                  Keying              Keying              Bit rate    Rate*3

        55 Mbps     62.5 Mbps     4-ary BOK              -      2.25 ns   125 Mbps       1/2

        110 Mbps     125 Mbps     4-ary BOK        4-ary PSM    2.25 ns   250 Mbps       1/2

       200 Mbps*1    222 Mbps     4-ary BOK        4-ary PSM    2.25 ns   333 Mbps       2/3

       480 Mbps*1    500 Mbps     4-ary BOK        8-ary PSM    2.25 ns    1 Gbps        1/2



   *1: In 200 and 480 Mbps, Pulse shape Keying is applied.
   *2: Pulse repetition interval: PRI
   *3: K=3 convolutional code




Submission                                  Slide 23                          CRL-UWB Consortium
September, 2003                                                        doc.: IEEE 802.15-03/383r0


             2.3. Channel Coding and Decoding
• Combined Iterative demapping/decoding (CIDD)
      – The structure of coded UWB systems can be viewed as serially
        concatenation code
                                  Serially concatenation
                   FEC                                  M-ary pulse mapper
                  encoder       interleaver         (MBOK+PSM, MBOK, OFDM, …)



      – Based on this viewpoint, iterative decoding strategy is available
                        M-ary Pulse       deinterleaver       FEC
                        demapper                             decoder

                                              interleaver
                                       Iterative decoding

      – CIDD is available to any UWB systems including XSI’s DS-UWB
        and MBOA’s MB-OFDM systems



Submission                                     Slide 24                         CRL-UWB Consortium
September, 2003                                                                                                      doc.: IEEE 802.15-03/383r0
                                                                                                   0
                                                                                              10
                                                                                                                                CIDD
Performance of CIDD                                                                                -1
                                                                                                                                            1st iteration
                                                                                                                                            2nd iteration
                                                                                              10                                            3rd iteration
                                                                                                                                            4th iteration
 •      4-ary BOK and 4-ary PSM (125Mbps)




                                                                             Bit Error Rate
                                                                                                                                        Viterbi decoding
 •      K=3 convolutional coding                                                              10-2                                      K=7, [171, 133]8,
                                                                                                        Turbo decoding
 •      Random bit-wise interleaver                                                                     K=3, [5,7]8,
                                                                                              10-3      4th iter.
 •      Interleaver length is 512 bits
 •      Single user and AWGN channel                                                          10-4

                                                                                                                                 gain
        CIDD provides the best BER performance !                                              10   -5
                                                                                                    0        1        2         3       4         5         6
                                                                                                                             Eb/N0 [dB]
                                                                                              100
Complexity of                  CIDD*1                                                                   Eb/N0=3.0dB
                                                                                              10-1                     K=7 soft-decision Viterbi
 •      K=3 complexity is 1/8 less than
        K=7                                                                                   10-2 1st iter.
                                                                                                                     1st iter.

 •

                                                                            Bit Error Rate
        M-ary pulse shape demapper                                                                                               2nd iter. K=3 Turbo
        complexity is 1/10 less than K=7                                                      10   -3

                                                                                                                                               3rd iter.
                                                                                                                 2nd iter.
        CIDD is less complexity than turbo                                                    10   -4


        and K=7 convolutional decoder.                                                                    K=3 CIDD
                                                                                                                                                  4th iter.
                                                                                                   -5
                                                                                              10
                                                                                                                       3rd iter.
     *1: P.H.Y. Wu, “On the complexity of turbo decoding algorithm,                                                                           4th iter.
     ” Proc. of IEEE VTC’01-Spring, vol.2, pp.1439-1443, May 2001.                                         Less complexity
                                                                                                   -6
                                                                                              10
                                                                                                    0         50       100     150     200                  250
                                                                                                                     Complexity (x103)
Submission                                                       Slide 25                                                              CRL-UWB Consortium
September, 2003                                                 doc.: IEEE 802.15-03/383r0

2.4. Realization of Soft-Spectrum Adaptation Transceiver


                   LNA       X       X          GCA       A/D



                                                 Freq. Hopping
             T/R                                                         Base
                                                  Synthesizer
             SW                                                          Band
                                                (LO Sin Demod.)
                                                                       Processor

                                 X          X
                    Output
                    Driver                            Free-verse
                                                       Template
                                                      Generator

  Detector of the SSA transceiver consists of mixer with local sine
 generator and correlator with template, in sequence.
  Both free-verse type and geometrical type pulses can be detected by
 this SSA transceiver.
  That’s why we call this receiving architecture as a universal detector.
Submission                           Slide 26                            CRL-UWB Consortium
 September, 2003                                                                    doc.: IEEE 802.15-03/383r0


                      2.5. Applicable Antennas
 Two types of novel antenna for UWB systems are designed.
    Type A --- Novel ultra-wideband antenna
                   which covers almost whole frequency ranges
    Type B --- Novel wideband antenna with dual frequency
                   which has dual resonant frequency with wide bandwidth
 Both antennas can be applied to any band segmentations, such as
single-, dual- and multi-bands.

        Single-band         Dual- or Triple-band                                         Multi-band
                                             5 GHz
                                             W-LAN




                             1   2   3   4    5   6   7   8   9   10 11                       N division
                                                                          f [GHz]

 Submission                                  Slide 27                                        CRL-UWB Consortium
September, 2003                                         doc.: IEEE 802.15-03/383r0


                            Antenna Design
 Type A: Novel ultra-wideband antenna
     Bow-tie printed antenna
                                                     Patch          Patch      Type A
     --- covers the required bandwidth
         for UWB system                      Patch                             Patch

                                                        Substrate

Type B: Novel wideband antenna with dual frequency
     Planar monopole antenna
     --- divides UWB frequency band
         into 2 sub-bands                                                    Type B


                                                             Feed
Submission                        Slide 28                          CRL-UWB Consortium
September, 2003                                                                                                          doc.: IEEE 802.15-03/383r0

                                        Antenna Characteristics (Type A):
                                         Novel Ultra-Wideband Antenna
                          0                                                             6
                                             Return Loss < -6dB
                         -5
      Return Loss [dB]




                                                                                        5

                         -10                                                            4




                                                                                 VSWR
                                                                                                                                VSWR < 3
                         -15                                                            3

                         -20                                                            2

                         -25                                                            1
                            3   4   5     6    7    8     9   10   11                       3     4      5          6    7    8       9       10        11
                                        Frequency [GHz]                                                           Frequency [GHz]
                         5                                                                          0                                     0
                                                                                        330                  30                 330                30

                                                                            300                                    60     300                                60
                         4
            Gain [dBi]




                                                                           270                                       90 270                                   90
                         3

                                                                            240                                    120    240                            120
                         2
                                             Gain > 2dBi                                210              150                210            150
                                                                                                   180                              180
                         1
                                                                                                < 3.1GHz >                       < 9.1GHz >
                          3     4   5    6    7     8     9   10   11                             Radiation pattern (vertical plane, f=90)
                                        Frequency [GHz]
                                                                                                        Omni-directional pattern

 Satisfying the antenna requirement of IEEE 802.15 TG3a (WPANs)
Submission                                                              Slide 29                                                          CRL-UWB Consortium
September, 2003                                                               doc.: IEEE 802.15-03/383r0

                   Antenna Characteristics (Type B):
             Novel Wideband Antenna with Dual Frequency

                                                         0

                                                         -5




                                     Return Loss [dB]
                                                        -10

                                                        -15

                                                        -20

                                                        -25

                                                        -30
                                                              2   4      6        8     10    12
                                                                      Frequency [GHz]




    Suppress the interference where other services exist.
    Omni-directional pattern can be obtained.



       Suitable for Soft-Spectrum Adaptation (SSA) applications.
Submission                          Slide 30                                             CRL-UWB Consortium
September, 2003                                                  doc.: IEEE 802.15-03/383r0

 2.6. Pre-equalization for Pulse Shape Calibration


                    X                                               Y
                          antenna         channel      antenna
                                At            C           Ar
             Pulse shape in both time and frequency domain is strongly affected
                    by Tx and Rx antennas and channel characteristics.




   X                     Xpre
         pre-equalizer          antenna   channel     antenna Y post-equalizer
         Xpre=X At -1                At      C           Ar         Xpost=Y C-1 Ar-1

     Pre-equalizer calibrates the
    pulse shape by pre-distortion           Efforts for pulse design is rewarded !


Submission                                 Slide 31                       CRL-UWB Consortium
September, 2003                                                         doc.: IEEE 802.15-03/383r0

                                 2.7. Link Budget
                              Assumption: AWGN, 0dBi TX/RX antenna gain

              Parameters        Value (>110Mbps)              Value            Value
                                                           (>200Mbps)       (>480Mbps)
               Data rate            125 Mbps                222 Mbps          500 Mbps
              Average TX            -5.07 dBm              -5.07 dBm         -5.07 dBm
                Power
               Path Loss             20.00 dB               12.04 dB           6.02 dB
                                     @ 10 m                  @4m               @2m
              Average RX            -74.10 dBm             -66.14 dBm        -60.12 dBm
                Power
              Noise Figure            7.0 dB                 7.0 dB            7.0 dB
             Average Noise          -93.0 dBm              -90.5 dBm         -87.1 dBm
                Power
             Minimum Eb/N0            2.8 dB                 3.4 dB            3.6 dB
             Implementation           3.0 dB                 3.0 dB            3.0 dB
                  Loss
              Link margin            6.14 dB                11.0 dB           13.3 dB
             RX Sensitivity         -87.2 dBm              -84.1 dBm         -80.5 dBm
                 Level
Submission                                      Slide 32                         CRL-UWB Consortium
September, 2003                                                           doc.: IEEE 802.15-03/383r0
   Comparison with other SSA systems
                              Assumption: AWGN, 0dBi TX/RX antenna gain

              Parameters                                    3-band          Free-verse
                               Optimized SSA              Geometrical          K-4
               Data rate          125 Mbps                 125 Mbps          125 Mbps
              Average TX          -5.07 dBm                -7.38 dBm         -7.39 dBm
                Power
               Path Loss           20.00 dB                66.52 dB          64.48 dB
                                   @ 10 m                  @ 10 m            @ 10 m
              Average RX         -74.10 dBm               -73.91 dBm        -71.87 dBm
                Power
              Noise Figure          7.0 dB                  7.0 dB             7.0 dB
             Average Noise        -93.0 dBm                -89.1 dBm         -83.7 dBm
                Power
             Minimum Eb/N0          2.8 dB                  3.2 dB             3.2 dB
             Implementation         3.0 dB                  3.0 dB             3.0 dB
                  Loss
             Link margin            6.1 dB                  5.0 dB            4.6 dB
             RX Sensitivity       -87.2 dBm                -82.9 dBm         -77.5 dBm
                 Level
Submission                                     Slide 33                            CRL-UWB Consortium
September, 2003                            doc.: IEEE 802.15-03/383r0



         3. Harmonization Based on SSA with
            XSI and MBOA UWB Systems


        Global Harmonization is the everlasting aim and
         basic philosophy of CRL-UWB Consortium.
        CRL’s Soft-Spectrum Adaptation has a wide
         capability to harmonize various proposed UWB
         systems including XSI’s and MBOA’s proposals.
        Just changing the kernel functions and shapes of
         Soft-Spectrum Adaptation pulse waveforms.



Submission                   Slide 34               CRL-UWB Consortium
  September, 2003                                                             doc.: IEEE 802.15-03/383r0


   3.1. Harmonization with XSI’s DS-UWB Proposal
                Optimized SSA                  XSI’s proposal by CRL                               XSI’s proposal
        • Single band                      • Dual-band                         • Dual-band
         Ex.: Modulated Hermitian pulses    Ex.: Modulated order-0 modified    • Designed wavelet pulse shape
                                            Hermitian pulse                      0

                                                                               -10

                                                                               -20

                                                                               -30
                                                                                     2   2.5         3        3.5     4   4.5       5          5.5           6
                                                                                                                                                             9
                                                                                                                                                     x 10
                                                                               0.5



                                                                                 0



                                                                              -0.5
Pulse                                                                            -1                -0.5               0             0.5                      1
                                                                                                                                                            -9
                                                                                                                                                     x 10
shape                                                                                                         Low band
                                                        Low band
                                                                                 0

                                                                               -10

                                                                               -20

                                                                               -30
                                                                                     5         6          7           8         9         10                11
                                                                                                                                                            9
                                                                                                                                                     x 10
                                                                               0.5



                                                                                 0



                                                                              -0.5
                                                                                 -1                -0.5               0             0.5                      1
                                                                                                                                                            -9

                  Time [nsec]                          High band                                                    High band                        x 10




  Submission                                        Slide 35                                             CRL-UWB Consortium
   September, 2003                                                                        doc.: IEEE 802.15-03/383r0




                        Optimized SSA                    XSI proposal by CRL                 XSI’s original proposal
                • 4-ary biorthogonal keying by 8-    •M-ary biorthogonal keying            •M-ary biorthogonal keying
Modulation      chip 2 WH codes                      • 24-chip Ternary code sequence       •24-chip Ternary code sequence
                                                     • 8 code sequences per piconet        • 8 code sequences per piconet
                •Half rate K=3 convolutional code    •Half rate K=3 convolutional code     •K=7 convolutional code
FEC coding      •4-iteration of combined iterative   •4-iteration of combined iterative    • (255, 223)-Reed Solomon code
                demapping and decoding               demapping and decoding                • Concatenated code




   Submission                                              Slide 36                                 CRL-UWB Consortium
   September, 2003                                                                 doc.: IEEE 802.15-03/383r0

                      High Band Symbol Rates and Link Budget
                                Green:        XSI’s proposal powered by SSA
                                Blue:         XSI’s original proposal
                                Red:          Optimized SSA

 Target     Target Rate        Data Mapping                  FEC              Fc GHz      Link margin        RX
  Rate                                                                                       @ 4m         Sensitivity
             114 Mbps             4-BOK             1/2 rate convolutional      8.1         10.6 dB       -82.7 dBm
110 Mbps     114 Mbps             4-BOK             1/2 rate convolutional      8.1          9.3dB        -80.9 dBm
             125 Mbps      4-ary PSM and 4-BOK      1/2 rate convolutional      6.75        13.7 dB       -86.8 dBm
             228 Mbps              8-BOK            2/3 rate convolutional      8.1          9.5 dB       -81.6 dBm
             228 Mbps             16-BOK            1/2 rate convolutional      8.1         10.5 dB       --82.6 dBm
200 Mbps
             199 Mbps              4-BOK                 RS (255,223)           8.1          4.7dB        -76.3 dBm
             222 Mbps      4-ary PSM and 4-BOK      2/3 rate convolutional      6.75        11.0 dB       -84.1 dBm


  Txpow=-6.9 dBm; Coded Eb/No=9.6 dB, 3 dB implementation loss, 0 dB RAKE gain, NF=5.1 dB
  Required Eb/N0: half rate conv + 16-BOK: 3.2dB, half rate conv + 4-BOK: 6.1dB, 2/3 rate conv.+8-BOK: 4.2dB


   Note that: In the link budgets of the optimized SSA, NF is set to 7dB.



   Submission                                          Slide 37                                CRL-UWB Consortium
  September, 2003                                                                 doc.: IEEE 802.15-03/383r0

                       Low Band Symbol Rates and Link Budget
                               Green:       XSI’s proposal powered by SSA
                               Blue:        XSI’s original proposal
                               Red:         Optimized SSA

 Target        Target Rate      Data Mapping                     FEC          Fc GHz    Link margin       RX
  Rate                                                                                     @ 10m       Sensitivity
                57 Mbps            4-BOK             1/2 rate convolutional      8.1       8.7 dB      -82.7 dBm
55 Mbps         57 Mbps            4-BOK             1/2 rate convolutional      8.1       8.4 dB      -80.9 dBm
               62.5 Mbps           4-BOK             1/2 rate convolutional     6.75       8.9 dB      -86.8 dBm
               114 Mbps             16-BOK           1/2 rate convolutional      8.1       8.6 dB      -81.6 dBm
110 Mbps       114 Mbps             8-BOK            2/3 rate convolutional      8.1       6.7 dB      -76.3 dBm
               125 Mbps      4-ary PSM and 4-BOK     1/2 rate convolutional     6.75      6.14 dB      -87.2 dBm

      Txpow=-9.9 dBm; Coded Eb/No=9.6 dB, 3 dB implementation loss, 0 dB RAKE gain, NF=4.2 dB
      Required Eb/N0: half rate conv + 16-BOK: 3.2dB, half rate conv + 4-BOK: 6.1dB


  Note that: In the link budgets of the optimized SSA, NF is set to 7dB.




  Submission                                          Slide 38                             CRL-UWB Consortium
September, 2003                                                                                    doc.: IEEE 802.15-03/383r0


                  3.2. Harmonization with MBOA’s Proposal
              MBOA’s Multiband OFDM
                                                2bit                                             IDFT
                                                        QPSK mapping        X
                                                                                
                                                                            exp j 2f 0 t   
     FEC coding




                                    100bits
                      Interleaver




                                                        QPSK mapping        X
                                                                                           
                                                                                                        GI       X
                                                    ・
                                              S/P
                                                    ・
                                                    ・
                                                                            exp j 2f1 t S                               
                                                                                                                     cos 2f c t   
                                                    ・
                                                    ・   QPSK mapping                                          T-H code
                                                                            X
                                                                                
                                                                            exp j 2f Ns t   




                                         ・
                                         ・
                                         ・



Submission                                                       Slide 39                                    CRL-UWB Consortium
 September, 2003                                                                                           doc.: IEEE 802.15-03/383r0

       Harmonization with MBOA’s OFDM Proposal (Cont.)
CRL’s MB-OFDM based on SSA
                                                                      SSA Inner encoder

                                                       1bit

                                                                                X
                                                                                 exp  j 2f 0 t 
        FEC coding




                         Interleaver




                                                                                 X
                                                                                    exp  j 2f1 t 
                                       100bits
                                                                                                                  GI         X
                                                       ・      PSM mapping
                                                                                                                                              
                                                 S/P
                                                       ・                                               S                         cos 2f c t
                                                       ・                        ・
                                                                                ・
                                                                                ・                                         T-H code
                                                                                X
     SSA Outer encoder                                                                  
                                                                                 exp j 2f Ns t   




                     ・
                     ・
                     ・

 Submission                                                          Slide 40                                          CRL-UWB Consortium
   September, 2003                                                                        doc.: IEEE 802.15-03/383r0

                 Comparison of MBOA’s and SSA’s Link Budget
                      Parameters              Value (>110Mbps)         Value (>200Mbps)           Value (>480Mbps)

                        Data rate                125 Mbps                  222 Mbps                  500 Mbps

                  Average TX Power               -5.07 dBm                 -5.07 dBm                 -5.07 dBm

                       Path Loss              20.00 dB @ 10 m           12.02 dB @ 4 m             6.02 dB @ 2 m

CRL’s             Average RX Power               -74.10 dBm               -66.14 dBm                 -60.12 dBm

                      Noise Figure                 7.0 dB                   7.0 dB                     7.0 dB
Optimized
                 Average Noise Power             -93.0 dBm                 -90.5 dBm                 -87.1 dBm
SSA                  Minimum Eb/N0                 2.8 dB                   3.4 dB                     3.6 dB

                 Implementation Loss               3.0 dB                   3.0 dB                     3.0 dB

                     Link margin                6.14 dB                   11.0 dB                   13.3 dB
                 RX Sensitivity Level            -87.2 dBm                 -84.1 dBm                 -80.5 dBm


                           Parameter                    Value              Value                     Value

                      Information Data Rate           110 Mb/s            200 Mb/s                 480 Mb/s

                       Average TX Power              -10.3 dBm           -10.3 dBm                 -10.3 dBm


MBOA’s                     Path Loss               20.0dB @ 10 m       12.02 dB @ 4 m            6.02 dB @ 2 m

                       Average RX Power              -74.5 dBm           -66.5 dBm                 -60.5 dBm
OFDM                  Noise Power Per Bit            -93.6 dBm           -91.0 dBm                 -87.2 dBm

                     CMOS RX Noise Figure              6.6 dB              6.6 dB                   6.6 dB

                       Total Noise Power             -87.0 dBm           -84.4 dBm                 -80.6 dBm

                        Required Eb/N0                 4.0 dB              4.7 dB                   4.9 dB

                      Implementation Loss              2.5 dB              2.5 dB                   3.0 dB

                       Link Margin                    6.0 dB            10.7 dB                   12.2 dB
                       RX Sensitivity Level          -80.5 dBm           -77.2 dBm                  -72.7 dB


   Submission                                               Slide 41                                CRL-UWB Consortium
  September, 2003                          doc.: IEEE 802.15-03/383r0


                    4. Concluding Remarks
     CRL’s SSA has been optimized and will be able to
     be modified in future.

 CRL’s SSA approach provides more options and flexibility
 to achieve co-existence, interference avoidance, matching
 with regulatory spectral mask, and high data rate.


CRL’s SSA has a superior capability to harmonize various
proposed UWB systems: XSI’s, MBOA’s and others.


That’s why SSA is the best solution for the standard!
  Submission                 Slide 42               CRL-UWB Consortium
September, 2003                    doc.: IEEE 802.15-03/383r0




                  Backup Materials




Submission              Slide 43            CRL-UWB Consortium
September, 2003                                                                    doc.: IEEE 802.15-03/383r0


      Pulse pre-equalization taking into account different
            kinds of UWB antennas and filters (1)

  Transient transmission model based on antenna’s transfer function

                                             Z0 
                      Erad t, r, ,  
                                                                      1 dVt (t )         r
                                                  at ( ,t , t )               (  )
                                            2rc                      Zc dt              c
     
     at ( , t , t ) : transient response of transmitter antenna & filter
     Vt (t )   : transmitter voltage of input pulse signal
       Z0      : free space impedance            Zc   : reference impedance at the antenna connector
     
     at ( ,t , t )  At ( )  At ( ) e j ( ) (Transfer Function)
                d ( ) d ( f )
      delay                      :Group delay of antenna’s transfer function
                 d         2df


  Radiated pulse waveforms and their corresponding spectra would be
 inevitably changed by the antenna’s transfer function, and FCC spectral
 mask may no longer be satisfied as ever.

Submission                                               Slide 44                             CRL-UWB Consortium
September, 2003                                                   doc.: IEEE 802.15-03/383r0

       Pulse pre-equalization taking into account different
             kinds of UWB antennas and filters (2)
 Pulse-antenna co-design based on pre-equalization, so as to realize FCC
spectral mask matching and waveform optimization.

                       X pre ( )  X ( ) At ( ) 1
                       X rad ( )  X pre ( ) At ( )  X ( )

 Pulse pre-equalization can compensate this deterioration, even in the
case of serious pulse waveform distortion.

 Pre-equalizer could be adaptively re-designed by software approach,
corresponding to arbitrary input pulse waveforms, antenna types, angle of
incidence, load impedance, polarization, and TR matching/shaping
networks.

 Pre-equalizer could be further extended to consider the multipath fading
channel, including pre-combining LOS and NLOS multipath components of
variable amplitudes and possible polarity reversals.
Submission                                Slide 45                         CRL-UWB Consortium
 September, 2003                                                                                                       doc.: IEEE 802.15-03/383r0
• Geometrical Rx                                                            AFE:112mW

                                                       X               GCA                      A/D                       I
                                                   I
                    LNA
                                                       X               GCA                      A/D                       Q Base
                                                   Q                                                                       Band
             T/R                                                            Freq. Hopping
             SW                                                                                                          Processor
                                                                             Synthesizer
                                                             I
                                                                 X                                                        I

                                             +             Q
                         Output                                  X                                                        Q
                         Driver
• Multi-band OFDM                                                                                      Carrier
                                                                                                       Phase                                   RF: 27 mW
                                                                       AGC                               and
                             cos(2f ct )                                                               Time                                  PLL: 50 mW
                                                                                                      Tracking
Pre-Select                                                                                                                                    ADC: 35 mW
  Filter
                                        I

                                                                              Synchronization
                                             LPF       VGA




                                                                                                       Remove Pilots
                                                                     ADC


                                                                                Remove CP




                                                                                                                                                         scrambler
                                                                                                                              Interleaver




                                                                                                                                               Decoder
                                                                                                                                                                     Output




                                                                                                                                               Viterbi
                                                                                                          FEQ
                                                                                   FFT
                   LNA




                                                                                                                                   De-




                                                                                                                                                            De-
                                                                                                                                                                      Data
                                       Q
                                             LPF       VGA           ADC

                             sin (2f ct )

                   AFE:187mW                                      Power consumption (Receiver)
 Submission                                                      Slide 46                                                                   CRL-UWB Consortium
    September, 2003                                                                            doc.: IEEE 802.15-03/383r0
                                                                                                 RF: 15 mW
                                                                                                 PLL: 50 mW
        • Geometrical Tx
                                                           X               GCA           A/D         I
                                                       I
                                  LNA
                                                           X               GCA           A/D         Q Base
                                                       Q                                                Band
                            T/R                                                   Freq.
                            SW                                                  Hopping               Processor
                                                                 I             Synthesizer
                                                                     X                               I

                                                   +           Q
                                      Output                         X                               Q
                                      Driver   AFE:65mW

                                                                                                            AFE:160mW
        • Multi-band OFDM
                                                                                               IFFT
Input                 Convolutional                    Bit               Constellation
         Scrambler                     Puncturer                                            Insert Pilots      DAC
Data                    Encoder                    Interleaver            Mapping          Add CP & GI


                                                                                                                     cos(2fct)

Power consumption (Transmitter)                                                                Time Frequency Code



    Submission                                         Slide 47                                             CRL-UWB Consortium

				
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