下行多用户MIMO系统中的低复杂度用户选择

Journal of Applied Sciences ›› 2009, Vol. 27 ›› Issue (4): 331-336.

• Communication Engineering • Next Articles

Low Complexity User Selection for Multi-user MIMO Downlink Systems

National Mobile Communications Research Laboratory, Southeast University, Nanjing 210096, China

Received:2008-12-24 Revised:2009-05-18 Online:2009-07-30 Published:2009-07-30

Abstract

Abstract:

This paper deals with the user selection problem for multi-user MIMO downlink systems with minimum mean square error (MMSE) pre-coding. A low complexity user selection algorithm is proposed, which sequentially selects users with minimum MMSE using the principle of greedy search. Simulation results show that the proposed algorithm can approach the sum rate of exhaustive search. It provides a gain in the sum rate over conventional user selection algorithms for systems with zero forcing (ZF) pre-coding.

Key words: multiple-input multiple-output (MIMO), multiuser, minimum mean square error pre-coding, user selection

CLC Number:

TN 929.5

ZHANG Cai-hua, XU Wei, CHEN Ming. Low Complexity User Selection for Multi-user MIMO Downlink Systems[J]. Journal of Applied Sciences, 2009, 27(4): 331-336.

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Low Complexity User Selection for Multi-user MIMO Downlink Systems

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