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BLAST Activities by Bell Laboratories Reinaldo A. Valenzuela This seminar will provide an overview of recent BLAST activities at Bell Laboratories BLAST, also known as Space-Time or MIMO (multiple input multiple output) techniques, is a revolutionary approach that, against all conventional wisdom, creates capacity from multipath, using multiple antennas at the receiver an the transmitter. BLAST achieves unprecedented increases in spectral efficiency with no increase in either, transmitted power or required bandwidth. I will cover the theoretical fundamentals, asymptotic behavior, experimental evidence, propagation assumptions, measurements, 3G standard activities and implications of this breakthrough technology and it implications for 4G wireless systems. Biography Reinaldo A. Valenzuela obtained his Bachelor of Science from University of Chile and his Ph.D. from the Imperial College of Science and Technology of the University of London, England. At Bell Laboratories, he studied indoor microwave propagation and modeling, packet reservation multiple access for wireless systems and optical WDM networks. He became Manager, Voice Research Dept., at Motorola Codex, involved in the implementation integrated voice and data packet systems. On returning to Bell Laboratories he led a multi-disciplinary team to create a software tool for Wireless System Engineering (WiSE), now in widespread use in Lucent Technologies. He received the Distinguished Member of Technical Staff award and is Director of the Wireless Communications Research Department. He is interested in microwave propagation measurements and models, intelligent antennas, third generation wireless system and space time systems achieving high capacities using transmit and receive ant! enna arrays. He has published over eighty papers and has twelve patents. He is a Fellow of the IEEE. He is editor for the IEEE Transactions on Communications and the IEEE Transactions on Wireless. Layered Turbo Space-Time MIMO Techniques for Wireless Alex Haimovich Recent research in information theory has shown that large gains in capacity and reliability of communications over wireless channels are achievable by exploiting the spatial diversity made possible by multiple antennas at the transmitter and at the receiver. Several approaches have emerged to implementing multiple-input multiple-output (MIMO) systems. This talk will survey space-time techniques for wireless, starting with multiple antennas at the receiver and proceeding on with a brief tutorial on multiple antennas at the transmitter and space-time coding. It will be shown that at low SNR, even with multiple transmit antenna, the effects of transmit diversity are limited and the performance of the system is dominated by the Euclidean distance between code words. From this analysis, we conclude that turbo codes are good candidates for implementation as part of MIMO systems. Recent research results will be presented on a new layered turbo space-time MIMO scheme. Biography Alex Haimovich is currently a Professor in the Electrical and Computer Engineering Department at New Jersey Institute of Technology. At NJIT, he has been Communication Area Coordinator since 1996, the director of Telecommunication Program since 1998 and a Project Leader for the Transceiver Group at the Wireless Telecommunications Center since June 2000. He was appointed the Director of the New Jersey Center for Wireless Telecommunications in September, 2001. His research interests include adaptive space-time radar, reduced rank methods in detection theory, applications of array processing to wireless communication, space-time coding, turbo coding and ultra-wideband wireless communications. He has received several Air Force and NSF grants as PI and Co-PI. Dr. Haimovich is a Senior Member of IEEE, an Associate editor for IEEE Communication Letters. He is also a reviewer for various IEEE Transactions. He received his B.S.E.E. from Technion, Israel in 1977, the M.S.E.E. degree from Drexel University in 1983 and the Ph.D. in Systems from University of Pennsylvania in 1989. Articles Engineering Newsgroups Usenet Usenet Newsgroups Newsgroups Server Colocation Music Lyrics

NJ CWT