IEICE Transactions on Communications
Online ISSN : 1745-1345
Print ISSN : 0916-8516
Regular Section
Overhead Reduction in Coordinated Beamforming for Multiuser MIMO-OFDM Systems with Limited Feedforward
Leonel SORIANO-EQUIGUA, Jaime SÁNCHEZ-GARCÍA, Chan-Byoung CHAE, Robert W. HEATH, Jr
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Keywords: coordinated beamforming, MIMO-OFDM, feedforward overhead, subcarrier correlation
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2011 Volume E94.B Issue 11 Pages 3168-3171

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Abstract

This letter proposes a method for choosing the best quantized beamforming vector that represents a subcarrier group, for coordinated beamforming in the downlink of multiuser multiple input multiple output-orthogonal frequency division multiplexing systems. The correlation between subcarriers is exploited for reducing the feedforward overhead, while maximizing the sum rate.

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© 2011 The Institute of Electronics, Information and Communication Engineers
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