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Codebook selected beamforming algorithm for multiuser MIMO systems 被引量:1

Codebook selected beamforming algorithm for multiuser MIMO systems
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摘要 For reducing the inter-user interference in multi-user multiple-input multiple-output(MU-MIMO) wireless communication systems,e.g.,MIMO-orthogonal frequency division multiplexing(MIMO-OFDM) systems,it is often desirable to the complex preprocessing at the transmitter.This paper proposes a multi-user beamforming algorithm with sub-codebook selection.Based on the minimal leakage criterion,the codebook selection,limited feed-forward and minimum mean square error(MMSE) detection are combined in the proposed algorithm.This avoids the complex channel matrix decomposition and inversion.Consequently,the computational complexity at the transmitter is significantly reduced.Simulation results show that the proposed algorithm performs better than existing beamforming algorithms. For reducing the inter-user interference in multi-user multiple-input multiple-output(MU-MIMO) wireless communication systems,e.g.,MIMO-orthogonal frequency division multiplexing(MIMO-OFDM) systems,it is often desirable to the complex preprocessing at the transmitter.This paper proposes a multi-user beamforming algorithm with sub-codebook selection.Based on the minimal leakage criterion,the codebook selection,limited feed-forward and minimum mean square error(MMSE) detection are combined in the proposed algorithm.This avoids the complex channel matrix decomposition and inversion.Consequently,the computational complexity at the transmitter is significantly reduced.Simulation results show that the proposed algorithm performs better than existing beamforming algorithms.
出处 《Journal of Systems Engineering and Electronics》 SCIE EI CSCD 2011年第1期170-174,共5页 系统工程与电子技术(英文版)
基金 support by the National Natural Science Foundation of China (60702060) the 111 Project
关键词 multi-user multiple-input multiple-output(MU-MIMO) linear beamforming co-channel interference(CCI) minimum mean square error(MMSE). multi-user multiple-input multiple-output(MU-MIMO) linear beamforming co-channel interference(CCI) minimum mean square error(MMSE).
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