[CPCC] SEMINAR: Very Low Rate CSIT Quantization 4/5 Monday 10 AM

Ender Ayanoglu ayanoglu at uci.edu
Mon Mar 29 14:09:50 PDT 2010


                               CPCC SEMINAR

         A Systematic Distributed Quantizer Design Method with an
                 Application to MIMO Broadcast Channels

                                   by

                             Erdem Koyuncu

                         April 5, 2010, Monday
                                  10 AM
                        Engineering Gateway 3161


                                 ABSTRACT

We introduce a systematic distributed quantizer design method, called
localization, in which, out of an existing centralized (global)
quantizer, one synthesizes the distributed (local) quantizer using
high-rate scalar quantization combined with entropy coding. The
general localization procedure is presented, along with a practical
application to a quantized beamforming problem for multiple-input
multiple-output broadcast channels. For our particular application,
not only localization provides high performance distributed quantizers
with very low feedback rates, but also reveals an interesting property
of finite rate feedback schemes that might be of theoretical interest:
For single-user multiple-input single-output systems, one can achieve
the performance of almost any quantized beamforming scheme with an
arbitrarily low feedback rate, when the transmitter power is
sufficiently large.

                        SPEAKER'S BIOGRAPHY

Erdem Koyuncu received the B.S. degree from the Department of
Electrical and Electronics Engineering of Bilkent University, Ankara,
Turkey in 2005, and the M.S. degree in 2006 from the Department of
Electrical Engineering and Computer Science of the University of
California, Irvine, Irvine, CA, USA, where he is currently a
Ph.D. candidate. His research interests include wireless
communications and signal processing, with an emphasis on the
utilization of quantized feedback in wireless networks.



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