Quantized Feedback Design for MIMO Broadcast Channels

SPEAKER: Professor Mikael Skoglund, KTH, SwedenABSTRACT: Low-rate feedback design for multiple-input multiple-output broadcast channels is studied under a vector quantization framework. Iterative algorithms are proposed to design the partial feedback link, the scheduler, and the linear precoding codebook. It is demonstrated that the gain due to multi-user diversity can be significant even with heavily quantized channel state information at the transmitter. Our results highlight the potential of multi-user diversity, even with simple schemes and extremely-low-rate feedback.BIO: Mikael Skoglund received the Ph.D. degree in 1997 from Chalmers University of Technology, Gothenburg, Sweden. In the same year he joined the Royal Institute of Technology (KTH), Stockholm, Sweden. Here he held various positions until he was appointed Professor of Communication Theory in 2003.Dr. Skoglund's research interests are in information theory, communications, and detection and estimation. He has worked on problems in vector quantization, combined source-channel coding, coding for wireless communications, and statistical signal processing. Dr. Skoglund has authored some 100 scientific papers. Several of these have received best paper awards, and one recent journal paper ranks as 'highly cited' according to the ISI Essential Science Indicators.Dr. Skoglund is frequently serving as area expert and reviewer for research grants and publications, and he is an Associate Editor with the IEEE Transactions on Communications. Dr. Skoglund has also consulted for industry, and he holds 6 patents. He is a senior member of the IEEE.Host: Giuseppe Caire, caire@usc.edu

Location: Hughes Aircraft Electrical Engineering Center (EEB) - -248

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