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Generalized Beamforming for MIMO Systems with Limited Transmitter Information

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Title: Generalized Beamforming for MIMO Systems with Limited Transmitter Information
Author: Mukkavilli, Krishna Kiran; Sabharwal, Ashutosh; Aazhang, Behnaam
Type: Conference Paper
Keywords: mimo systems; feedback; beamforming
Citation: K. K. Mukkavilli, A. Sabharwal and B. Aazhang,"Generalized Beamforming for MIMO Systems with Limited Transmitter Information," in Asilomar Conference on Signals, Systems, and Computers,
Abstract: In this work, we investigate the outage performance of beamforming schemes in wireless systems equipped with multiple transmit and receive antennas. In particular, we analyze the outage performance of unit rank beamforming in the presence of finite rate channel feedback at the transmitter. Further, we present finite size beamformer codebook constructions which result in near-optimal outage performance for unit rank beamforming. The constructions obtained for the unit rank beamforming scheme are then extended to higher rank beamforming schemes with quantized channel information. We show that significant performance improvements as well as reduction in decoding complexity can result from a small number of feedback bits.
Date Published: 2003-11-20

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  • ECE Publications [1082 items]
    Publications by Rice University Electrical and Computer Engineering faculty and graduate students