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IEICE TRANSACTIONS on Communications

An Efficient User Selection Algorithm for Zero-Forcing Beamforming in Downlink Multiuser MIMO Systems

Haibo ZHENG, Xiang CHEN, Shidong ZHOU, Jing WANG, Yongxing ZHOU, James Sungjin KIM

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Summary :

In this letter, we propose an efficient user selection algorithm aiming to select users with less spatially correlation and meet the user number limit of zero-forcing beamforming in downlink multiuser MIMO systems. This algorithm yields a considerable complexity reduction with only a small loss in performance and it only needs partial users' CSI feedback. Coupled with the algorithm, a null space updating method in O(K2) time and a modified proportional fair scheduling algorithm are also proposed.

Publication
IEICE TRANSACTIONS on Communications Vol.E89-B No.9 pp.2641-2645
Publication Date
2006/09/01
Publicized
Online ISSN
1745-1345
DOI
10.1093/ietcom/e89-b.9.2641
Type of Manuscript
LETTER
Category
Wireless Communication Technologies

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