YVES-
YVES-PAUL NAKACHE
3591 Greenlee Dr. apt. 235 Email : yvespaul.nakache@gmail.com
San Jose, CA 95117 Permanent resident - Green card
Cell #: 908 656 1318
Research Engineer
Signal Processing – Wireless Communications
Resume Objective: Seeking a leading position in signal processing and telecommunications.
My Profile: MSEE in Signal processing and Telecommunications, eight years R&D experience in algorithm
development, speech processing, noise reduction, air interface design, performance simulations and
standardization activities. Five granted U.S. patents and ten scientific publications. Served as a research
engineer at Melodis Corporation and at Mitsubishi Electric Research Laboratories. Proficient in Matlab and C.
Accustomed to working in a team and in an international environment. Proven innovative abilities,
management, and troubleshooting skills. Able to conduct business in English and French.
WORK EXPERIENCE
06/08-12/08 Melodis Corporation - Full time Employee.
• Participate as a research engineer in Melodis’ Speech R&D team to develop a noise reduction algorithm in Matlab
and C++ for a robust speech recognition system for mobile phone and web applications. Based in Silicon Valley,
California, Melodis Corporation is producing the next generation of sound recognition and search technologies.
• my research activities included Voice Activity Detection, Higher Order Statistics, pitch estimation, filtering, and
noise reduction/cancellation techniques (spectral subtraction methods, Kalman filters, etc) in non-stationary
noise (wind, traffic, TV/music, babble noise, second speaker, etc) for Melodis’ speech recognition applications
such as Midomi Mobile's Say Search technology, and Melodis Voice Dialer for the iphone (Software as a
Service).
09/00-08/07 Mitsubishi Electric Research Laboratories (MERL) - Full time Employee.
• Promote our activities in technical working groups or industry groups. Attended and contributed as scientist and voting
member to wireless networking standards such as IEEE802.15.3a (WPAN) and WiMedia/MBOA (later used for
Wireless USB).
• Numerous technical contributions related to Tone Spreading for the PHY working group of the MultiBand
OFDM Alliance leading to the acceptance of a merged contribution between MERL, I2R, Infineon and
Broadcom; now accepted as part of the WiMedia MB-OFDM PHY specifications. Co-author of the WiMedia
PHY Specification, Final Release 1.0, 2005
• Co-author of Mitsubishi’s proposals for a high data rate UWB transceiver for the 802.15.3a (submissions
of several.PHY-layer technical contributions to the IEEE 802.15.3a standard organization).
• Participate as a research engineer in MERL’s Digital Communication R&D team to identify future trends and
research topics, lead link and system level simulations with Matlab and C++ to develop MERL’s technical standard
contributions for next generation wireless communication systems and contribute to company’s Intellectual Property.
• Wrote 2 essential patents included in mandatory modes of two standards; 5 US patents granted and 7 patent
applications filed in various fields such as UWB, OFDM and speech processing.
• Published 2 IEEE journal papers (JSAC & JASP) and 8 IEEE conference papers.
• Led system level simulations for 3GPP LTE Uplink (HSUPA/Long Term Evolution) to support our 3GPP
standard activities.
• Worked on MB-OFDM PHY specifications and simulations with the MultiBand OFDM Alliance to ensure our
IPs (see patent section) were included in the MBOA PHY specifications:
• Supervised research and simulations of the MB-OFDM transceiver (interleaved tone spreading proposal,
equalization in collaboration with I2R, synchronization algorithms, etc).
• Managed simulations in MultiBand Frequency Shift Keying with slow hopping to allow interoperability
between MB-OFDM transceivers and low cost non-coherent MB-FSK transceiver.
• Evaluated Inter Carrier Interference Cancellation algorithms for MB-OFDM in channels with strong delay
dispersion.
• Contributed to the specifications of Mitsubishi Electric’s first MB-OFDM prototype (2004).
• Led the development of the simulation tool for MERL’s contribution to the IEEE802.15.3a high speed UWB
standardization group and contributed to Mitsubishi’s Impulse Radio UWB proposal:
• Conducted research on spectral design of FCC compliant UWB Impulse Radio transceivers.
• Managed research and link level simulations to evaluate proposed UWB Impulse Radio techniques, formalized
constraints on Modulation and Multi Access schemes.
• Implemented the receiver software for the Impulse Radio UWB demo for the 2003 road show in Japan.
• Provided technical consulting services for UWB inter-ship communication and automotive applications.
• Directed the research on the Intrinsic Distributed Sensors.project (position location methods)
• Conducted the elaboration of research proposals to develop new speech coders with low data rates.
• Conducted research on diversity combining for the next generation of wireless communication (3GPP).
• Defined directions of a new research project on cognitive radio and game theory for wireless communications.
01/00-06/00 THOMSON-CSF Communications, during my Master of Science
• Conducted research in France and in the Czeck Republic on a very low bit rate speech coding scheme (<500bps);
Project from the National Telecommunications Research Network (RNRT).
• This coder combines speech recognition and synthesis. An inventory of classes of variable-length acoustic units
are obtained by an unsupervised training process requiring neither phonetics nor orthographic transcriptions of
the speech data (ALISP). The basic units are found automatically in the training database using temporal
decomposition, vector quantization and multigram segmentation. They are modeled by hidden Markov models
(HMM) and an iterative process is then used to refine the estimation of the initial units.
Once the spectral segmentation of the message is found and coded, similar prosodic characteristics are extracted
from the segments of each acoustic class. The prosodic information of the message (voice activity, pitch, energy,
DTW paths and segment lengths) can be coded at a very low data rate of about 200 bits per second.
The decoder is a simple speech synthesizer gathering the coded spectral and prosodic parameters and
concatenating the corresponding acoustic segments.
• Conference paper; 1 European patent filed and 1 US patent granted.
EDUCATION
2000 : M. S. in Electrical Engineering
Major: Signal Processing and Digital Communications.
Ecole Supérieure d’Ingénieurs en Electronique et Electrotechnique (ESIEE Paris), Marne-la-Vallée, France.
Major project with Thomson-CSF Communication for the National Telecommunications Research Network
(RNRT) leading to one publication and one patent as described above.
1998 : B. S. in Electrical Engineering
Major: Signal Processing, Speech and Image processing, Electronics and Computer Science.
Ecole Supérieure d’Ingénieurs en Electronique et Electrotechnique (ESIEE Paris), Marne-la-Vallée, France.
1998 : B. S. in Physics (Licence de Physique).
Major: Physics.
Université Paris Diderot (Paris VII), Paris, France.
AWARDS
2000 : M.S.E.E.: Top of Class. Academic jury's congratulations.
Prize of Excellence awarded by the managing director of NEC France.
1998 : B. S. in Electrical Engineering: Top of class.
B. S. in Physics: with distinction.
MISCELLANEOUS
• Participation at the Mitsubishi 2006 IP award.
• Software: proficient in Matlab, Simulink, Adobe Audition; Programming languages: C/C++.
• Fluent in English and French.
• Knowledge of music: pianist.
REFERENCES
Majid Emami – Founder & Vice President, Engineering at Melodis Corporation: (650) 799 4788
Keyvan Mohajer – Founder, President & Chief Executive Officer at Melodis Corporation: (650) 799 4773
Jinyun Zhang – Group Manager, Digital Communications at Mitsubishi Electric Research Labs: (617) 621 7595
Philippe Gournay – Associate Professor in the Speech and Audio Research Group at the Université de Sherbrooke
(Quebec), previously Manager at Thomson-CSF Communication: (819) 821-8000 ext. 61994
PATENTS & PUBLICATIONS
Patents awarded, filed and disclosed
Granted US patents
1. Method for the encoding of prosody for a speech coder working at very low bit rates
United States Patent 7,039,584 Pub. Date: 05/02/06
Inventors: Philippe Gournay, Yves-Paul Nakache
2. Randomly changing pulse polarity and phase in an UWB signal for power spectrum density shaping
United States Patent: ? (Pub. No.: US 20050175068 A1) allowed on 07/09/07
Inventors: Yves-Paul Nakache, Andreas F. Molisch, Jinyun Zhang.
3. OFDM Transmitter for Generating FSK Modulated Signals
United States Patent 7,227,903 Pub. Date: 6/05/07
Inventors: Yves-Paul Nakache, Andreas F. Molisch
4. OFDM receiver for detecting FSK modulated signals
United States Patent 7,154,956 Pub. Date: 12/26/06
Inventors: Andreas F. Molisch, Yves-Paul Nakache
5. Randomly inverting pulse polarity in an UWB signal for power spectrum density shaping
United States Patent 7,103,109 Pub. Date: 09/05/06
Inventors: Yves-Paul Nakache, Andreas F. Molisch, Jinyun Zhang
Patent Applications Filed:
1. Space-Time-Frequency Sensing of RF Spectrum in Cognitive Radios
Pub. No.: US ? Pub. Date: 01/08/07
Inventors: Teo Koon Hoo, Hongyuan Zhang, Yves-Paul Nakache, Jinyun Zhang.
2. Ultra wide bandwidth transmitter with tone grouping and spreading
Pub. No.: US 20050135457 A1 Pub. Date: 06/23/05
Inventors: Andreas F. Molisch, Yves.-Paul. Nakache, Philip Orlik, Iyappan Ramachandran.
3. Ultra wide bandwidth receiver with tone grouping and spreading
Pub. No.: US 20050135229 A1 Pub. Date: 06/23/05
Inventors: Andreas F. Molisch, Yves.-Paul. Nakache, Philip Orlik, Iyappan Ramachandran.
4. Procédé de codage de la prosodie pour un codeur à très bas débit
Pub. No.: EPO 01402684.3 Pub. Date: 17/04/02
Inventors: Philippe Gournay, Yves-Paul Nakache
5. Detecting and synchronizing to frequency hopped packets
Pub. No.: US 20070211785 A1 Pub. Date: 09/13/07
Inventors: Yves-Paul Nakache, Nikolaus Lehmann
6. Synchronizing to symbols received via wireless communications channel
Pub. No.: US 20070237274 A1 Pub. Date: 10/11/07
Inventors: Yves-Paul Nakache, Nikolaus Lehmann
Other Filed Patent Applications:
1. One application related to Intrinsic Distributed Sensors
Standards
Co-author of the WiMedia MB-OFDM PHY Specification, Final Release 1.0, 2005.
Journal and Conferences
Journals
1. Y.-P. Nakache, A.F. Molisch, “Spectral Shaping of UWB Signals for Time-Hopping Impulse Radio”, IEEE Journal
on Selected Areas in Communications (JSAC) Special Issue on Ultra Wideband Wireless Communications - Theory
and Applications, Vol.24, No.4, April 2006.
2. A.F. Molisch, Y. G. Li, Y.-P. Nakache, P. Orlik, M. Miyake, Y. Wu, S. Gezici, H. Sheng, S.Y. Kung, H. Kobayashi,
H.V. Poor, A. Haimovich, J. Zhang, ”A Low-Cost Time Hopping Impulse Radio System for High Data Rate
Transmission”, EURASIP Journal on Applied Signal Processing, JASP, 2005, p397-412.
Conferences
1. C. Duan, G. Pekhteryev, J. Fang, Y.-P. Nakache, J. Zhang, K. Tajima, Y. Nishioka, H. Hirai, “Transmitting Multiple
HD Video Streams over UWB Links”, IEEE Consumer Communications and Networking Conference, CCNC 2006,
invited paper to be published.
2. I. Ramachandran, Y.-P. Nakache, P. Orlik, A.F. Molisch, J. Zhang, “Symbol spreading for UltraWideBand systems
based on MultiBand OFDM”, 15th IEEE International Symposium on Personal, Indoor and Mobile Radio
Communications 2004 Vol. 2, PIMRC 2004, 5-8 Sept. 2004, p1204-1209.
3. Y.-P. Nakache, P. Orlik, W.M. Gifford, A.F. Molisch, I. Ramachandran, G. Fang, J. Zhang, “Low-complexity
ultrawideband transceiver with compatibility to MultiBand-OFDM”, International Workshop on Ultra Wideband
Systems Joint with Conference on Ultrawideband Systems and Technologies, Joint UWBST & IWUWBS 2004, 18-
21 May 2004, p151-155.
4. A.F. Molisch, Y.-P. Nakache, P.V. Orlik, J. Zhang, Y. Wu, S. Gezici, S.-Y. Kung, H.V. Poor, Y.G. Li, H. Sheng, A.
Haimovich, "An Efficient Low-Cost Time-Hopping Impulse Radio for High Data Rate Transmission", The 6th
International Symposium on Wireless Personal Multimedia Communications, WPMC 2003, 19-22 Oct. 2003.
5. Y.-P. Nakache; A.F. Molisch, “Spectral shape of UWB signals - influence of modulation format, multiple access
scheme and pulse shape”, The 57th IEEE Semiannual Vehicular Technology Conference 2003 Vol. 4, VTC 2003,
Spring, 22-25 April 2003, p2510-2514.
6. J.H. Horng, Y.-P. Nakache, “Adaptive diversity combining for interference cancellation in CDMA systems”, IEEE
VTS 54th Vehicular Technology Conference 2001 Vol. 3, VTC 2001 Fall, 7-11 Oct. 2001 p1899-1902.
7. J.H. Horng, Y.-P. Nakache, “Using Diversity Combining for Adaptive Interference Cancellation in CDMA Systems”,
International Symposium on Signals, Systems and Electronics 2001, ISSSE, 24-27 July 2001.
8. Y.-P. Nakache, P. Gournay, G. Baudoin, “Codage de la prosodie pour un codeur de parole à très bas débit par
indexation d'unités de taille variable”, CORESA'2000, sur “les recherches et les études en cours dans le domaine des
représentations multimédias”, 19-20 Oct. 2000.