ICASSP 2008 - 2008 IEEE International Conference on Acoustics, Speech, and Signal Processing - March 30 - April 4, 2008 - Las Vegas, Nevada, U.S.A.

T-1: Adaptive MIMO Techniques and Performance

Sunday Afternoon, March 30
14:00 - 17:00

Presented by

Iain B. Collings, CSIRO, Australia, Robert W. Heath Jr., University of Texas at Austin, USA, Matthew R. McKay, Hong Kong University of Science and Technology, Hong Kong and Antonio Forenza, Rearden LLC, USA

Abstract

Multiple-input multiple-output (MIMO) antenna systems have recently attracted considerable attention as they offer substantial capacity and performance improvements over single antenna systems without requiring additional power or bandwidth. The initial MIMO research focussed on idealized uncorrelated scattering environments, and spawned an explosion of interest in the area.

This tutorial will present an introduction to general MIMO systems, with a particular focus on practical correlated transmission environments. We will discuss a number of low complexity transmission architectures suitable for practical coded MIMO implementations, including the IEEE802.11n and IEEE802.16 standards. The focus of the tutorial will be on examining the potential advantages that can be gained by adapting and switching between different coded MIMO transmission schemes, depending on the quality and correlation in the MIMO channel. A summary of the main analysis techniques will be presented, as well as simulation studies which examine the various system design tradeoffs.

Outline

  • Introduction
    • General MIMO channel model
    • Correlated MIMO channels and impact of array configuration
  • Low Complexity Transmission Schemes
    • Bit-Interleaved Coded Modulation for MIMO
    • Spatial multiplexing (SM) schemes (ZF, MMSE, ML, VBLAST)
    • Beamforming schemes (Instantaneous, Statistical (SB))
    • Space-time block coding (STBC)
  • Analysis Techniques
    • BER expressions (with a case study)
    • Multivariate statistics (Wishart matrices, Quadratic forms, ...)
    • Moment generating functions (MGF)
  • Practical Adaptive MIMO Schemes & Performance in Correlated Channels
    • Uncoded (SM-STBC switching, multi-mode antenna selection, ...)
    • Coded SM-SB switching
    • Coded SM-STBC switching

Speaker Biographies

Iain B. Collings (BE Melb, PhD ANU) has held academic positions at the University of Melbourne and the University of Sydney, where he was an Associate Professor. Since August 2005 he has been with the Information & Communication Technologies Centre of the Commonwealth Scientific and Industrial Research Organization (CSIRO), Australia, where he is currently a CEO Science Leader. He has published over 130 international journal and conference papers, and most recently has focused his research on the capacity and performance of MIMO systems in practical correlated environments. His other research interests include synchronization, channel estimation, equalization, and multi-carrier modulation, for time-varying and frequency-selective channels.

Dr. Collings currently serves as an Editor for the IEEE Transactions on Wireless Communications. He has also served as Vice Chair of the Technical Program Committee (TPC) for the IEEE Vehicular Technology Conf. (Spring) 2006, and has served on the TPCs of IEEE Int. Conf. on Communications 2005, IEEE Int. Symp. on Spread Spectrum Techniques and Applications 2004, IEEE Vehicular Technology Conf. (Fall) 2003, IEEE GLOBECOM Conf. 2002; and on the Organizing Committees of IEEE Information Theory Workshop 2001, IEEE Int. Symp. on Spread Spectrum Techniques and Applications 2004, and the Australian Communication Theory Workshops 2000-06. He is a Senior Member of the IEEE and a Member of Engineers Australia. For further information on research in progress and associated papers see: www.ict.csiro.au/staff/Iain.Collings/

Robert W. Heath Jr. (BS & MS Virginia, PhD Stanford) has held senior positions in both industry and universities. From 1998-99 he was a Senior Member of the Technical Staff at Iospan Wireless Inc, San Jose, CA where he played a key role in the design and implementation of the physical and link layers of the first commercial MIMO-OFDM communication system. From 1999 to 2001 he served as a Senior Consultant for Iospan Wireless Inc. In 2003 he founded MIMO Wireless Inc. (see www.mimowireless.com for more information). Since January 2002, he has been with the Department of Electrical and Computer Engineering at The University of Texas at Austin where he is currently an Associate Professor as part of the Wireless Networking and Communications Group. His research interests include interference management in wireless networks, sequence design, and all aspects of MIMO communication including antenna design, practical receiver architectures, limited feedback techniques, and scheduling algorithms.

Dr. Heath has been an Editor for the IEEE Transactions on Communication and an Associate Editor for the IEEE Transactions on Vehicular Technology. He is a member of the Signal Processing for Communications Technical Committee in the IEEE Signal Processing Society. He was a technical co-chair for the 2007 Fall Vehicular Technology Conference, is the general chair of the 2008 Communication Theory Workshop, and is a co-organizer of the 2009 Signal Processing for Wireless Communications Workshop. He is the recipient of the David and Doris Lybarger Endowed Faculty Fellowship in Engineering. For more information about his research and related publications visit his web-site: www.ece.utexas.edu/~rheath

Matthew R. McKay (BE & BIT QUT, PhD Sydney) is an Assistant Professor at the Hong Kong University of Science and Technology (HKUST). He is also part of the Center for Wireless Information Technology at HKUST. He has published over 30 international journal and conference papers in MIMO communications. He authored or co-authored two Best Student Paper Awards during his PhD studies (IEEE VTC’06 & IEEE ICASSP’06), and received the University Medal for his undergraduate degrees. Dr. McKay has served on the TPC for ISCIT’07, and currently serves on the TPC for IEEE ICC’08. For more information about his research and related publications visit his web-site: http://ihome.ust.hk/~eemckay

Antonio Forenza (BS & MS Politecnico di Torino, Dip Eurecom, PhD UT Austin) is a Senior Systems Engineer at Rearden LLC. In 2001 he interned as a Systems Engineer at Iospan Wireless, Inc. (San Jose, CA), a startup company developing high-speed fixed wireless system, based on MIMO-OFDM technology. His main research focus was on link-adaptation and physical layer algorithms design. In the fall 2001 he joined ArrayComm, Inc. (San Jose, CA), where he was involved in the design of smart antenna WCDMA systems. Over the summer 2004 and 2005 he interned as a Systems Research Engineer at Samsung Advanced Institute of Technology (SAIT, Suwon, Korea) and Freescale Semiconductor, Inc. (Austin, TX), respectively, designing adaptive MIMO transmission techniques for 3GPP, IEEE 802.11n and IEEE 802.16e standards systems. Since June 2006, he has been working for Rearden LLC, San Francisco CA. He authored the IEEE VTC’06 Best Student Paper Award and has published over 20 international journal and conference papers and standards contributions. His research interests include adaptive MIMO techniques, MIMO antenna array design, smart antenna signal processing, precoding techniques for MU-MIMO.


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