IEICE Transactions on Communications
Online ISSN : 1745-1345
Print ISSN : 0916-8516
Regular Section
Performance Analysis of the Extended Low Complexity User Scheduling Algorithm over Up-Link Multi-User MIMO OFDMA Systems
Junyi WANGYuyuan CHANGChuyu ZHENGKiyomichi ARAKIZhong Zhao ZHANG
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2008 Volume E91.B Issue 1 Pages 327-329

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Abstract

The low complexity tree-structure based user scheduling algorithm is extended into up-link MLD-based multi-user multiple-input multiple-output (MIMO) orthogonal frequency division multiplexing access (OFDMA) wireless systems. The system sum capacity is maximized by careful user selection on a defined tree structure. The calculation load is reduced by selecting the M most possible best branches and sampling in frequency dimension. The performances of the proposed scheduling algorithm are analyzed within three kinds of OFDMA systems and compared with conventional throughput-based algorithm. Both the theoretical analysis and simulation results show that the proposed algorithm obtains better performance with much low complexity.

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© 2008 The Institute of Electronics, Information and Communication Engineers
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