IEEE Radio and Wireless Conference
RAWCON 2004
Special Session Speaker
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3:30pm
MIMO: A
disruptive technology enabling very high spectral efficiency
beyond conventional limits
Dr. Reinaldo Valenzuela
Bell Laboratories
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Abstract:
To demonstrate a real-time, mobile, networked MIMO system
in a realistic tactical environment, the Defense Advanced
Projects Agency (DARPA) has instituted a program called Mobile
Network MIMO (MNM). The first stage of this program is to
demonstrate such a system in a rural foliated environment
using 20 MIMO equipped nodes using an ad hoc network in bandwidths
of 1 MHz, 10 MHz, and 25 MHz, reaching a total network throughput
of up to 1 Gbps. Each node is an SUV with 8 transmit and 10
receive antennas. For any particular link both nodes are naturally
at ground level. Such node placement necessitates a channel
measurement and modeling effort to determine quantities such
as spatial correlations, delay spread as well as propagation
loss. Some of the key propagation questions are whether the
channels offer enough scattering richness to benefit from
MIMO systems. Also of importance is determining the delay
spreads experienced in rural environments ranging from densely
wooded to open field with large but sparse clutter within
Line of Sight. In this work some of the initial results of
spatial channel characterization are shown for ground level
nodes placed in a diverse rural environment.
Biography:
Dr. Reinaldo Valenzuela received the B.S. degree from the
University of Chile, Santiago, and the Ph.D. degree from the
Imperial College of Science and Technology of the University
of London, London, UK. At Bell Laboratories, Holmdel, NJ,
he studied indoor microwave propagation and modeling, packet
reservation multiple access for wireless systems and optical
wavelength division multiplexing (WDM) networks. He became
Manager of the Voice Research Department at Motorola Codex,
Boston, MA, where he was involved in the implementation integrated
voice and data packet systems. On returning to Bell Laboratories,
he led a multidisciplinary team to create a software tool
for wireless system engineering (WiSE), now in widespread
use in Lucent Technologies. 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 antenna arrays.
He has published over 80 papers and has 12 patents. Dr. Valenzuela
is a Fellow of IEEE and the Editor for the IEEE TRANSACTIONS
ON COMMUNICATIONS and the IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS.
He received the Distinguished Member of Technical Staff Award
and is Director of the Wireless Communications Research Department.
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