1 Multiple-Input Multiple-Output _MIMO_ Technology

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					                       IEEE Transactions on Antennas and Propagation


                                Microwave Theory and Techniques

                                Announce a Joint Special Issue on

                  Multiple-Input Multiple-Output (MIMO) Technology

Multiple-input multiple-output (MIMO) wireless techniques represent a breakthrough in the use of
antenna arrays in wireless systems. Unlike traditional phased array or diversity techniques that improve
the sensitivity to one signal of interest, MIMO systems employ antenna arrays jointly at transmit and
receive to spatially multiplex signals over multipath or near-field channels. Measuring system
performance in terms of channel capacity, MIMO systems offer the exciting possibility of linear
capacity increase with additional antennas compared to more modest logarithmic growth of traditional
diversity systems. The large potential of MIMO techniques is evidenced by rapid adoption into recent
wireless standards, such as 802.11n, LTE, and WiMAX.

Although MIMO systems offer impressive possibilities, the paradigm shift to multiple independent
channels presents new questions and challenges to the RF community. For example, modified
performance metrics and methodologies for array design are required to provide explicit goals for near-
optimal design. Novel circuit and device designs are needed that yield peak capacity, coupled with
multi-channel transceiver architectures with high sensitivity, low power consumption, and minimal cost.
The interplay between various MIMO modes and the impact on the circuit requirements is also of
interest. Characterization and modeling of the propagation channel should adequately capture the
spatial environment and antenna effects, yet provide simple enough descriptions for efficient link-level
simulation. Developments in MIMO also warrant revisiting applications such as relay systems, radar,
physical-layer security, and cross-layer design, where detailed knowledge of propagation physics now
becomes more critical.

The focus of this special issue is on recent developments in antennas, propagation and microwave
related aspects of MIMO technology, including fundamental theory, new modeling and design
methodologies, and novel applications. This Special Issue is a joint activity of the Antennas and
Propagation and Microwave Theory and Techniques Societies. It will be published in the Transactions
on Antennas and Propagation. Manuscripts should therefore conform to the requirements for regular
papers of this Transactions as specified in the information for Authors in the inside back cover. of a
recent issue or on the web site (http://ieeeaps.org/aps_trans/index.htm ). Potential contributors may
contact one of the Guest Editors by email (with the contact information provided below) to determine
the suitability of their contribution to the special issue. All papers must be submitted online through the
AP Transactions Manuscript Central web site (http://mc.manuscriptcentral.com/tap-ieee), with a
statement to the Editor-in-Chief of the AP Transactions, Dr. Trevor S. Bird, that they are intended for
this special issue.

Guest Editors

Prof. Jørgen Bach Andersen            Prof. Jun-ichi Takada                  Prof. Babak Daneshrad
Aalborg University, Denmark           Tokyo Institute of Technology,         UCLA Electrical Engineering
(jba@es.aau.dk                        Japan                                  Department
                                      (takada@ide.titech.ac.jp)              Los Angeles, CA USA
Dr. Buon Kiong Lau                                                           (babak@ee.ucla.edu)
Lund University, Sweden               Dr. Jon W. Wallace
(bkl@eit.lth.se)                      Jacobs University Bremen,
                                      Germany (wall@ieee.org)

Paper Submission: June 1, 2010                            Publication Date: June 2011


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Description: MIMO (Multiple-Input Multiple-Out-put) system is a core technology used in 802.11n. IEEE 802.11n is the following 802.11b a g after the new wireless LAN technology, the speed up to 600Mbps. Meanwhile, the proprietary MIMO technology improves the performance of existing 802.11a/b/g networks. The technology was first used by Marconi in 1908's, which uses multiple antennas to suppress fading. According to the number of receive antennas at both ends, as opposed to ordinary SISO (Single-Input Single-Output) systems, MIMO can also include SIMO (Single-Input Multi-ple-Output) systems, and MISO (Multiple-Input Single-Output) systems.