多小区V-BLAST系统中基于后验信干比平衡的功率控制方法

Journal of Applied Sciences ›› 2007, Vol. 25 ›› Issue (1): 11-15.

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A Power Control Method Based on Post-Detection SINR Balancing in Cellular V-BLAST Systems

WEI Chuan-ming, QIU Ling, ZHU Jin-kang

Department Electronic Engineering and Information Science, University of Science and Technology of China, Hefei 230027, China

Received:2005-12-17 Revised:2006-03-27 Online:2007-01-31 Published:2007-01-31

Abstract

Abstract:

Power control is an effective technique to restrain the co-channel interference (CCI) in a cellular system.In this paper, an optimal power control method based on post-detection SINR balancing for a cellular V-BLAST system is proposed.Its simplified solution with reduced complexity is provided.The proposed method may balance the postdetection SINR of each substream at mobile stations (MS) by adjusting power levels of every transmit antenna at base stations (BS) in the system.Simulation results show that the proposed method outperforms existing power control methods both in the system outage probability and BER performance.The simplified solution significantly reduces computing complexity with slight performance degradation.

Key words: V-BLAST, post-detection SINR, MIMO, cellular, power allocation

CLC Number:

WEI Chuan-ming, QIU Ling, ZHU Jin-kang. A Power Control Method Based on Post-Detection SINR Balancing in Cellular V-BLAST Systems[J]. Journal of Applied Sciences, 2007, 25(1): 11-15.

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A Power Control Method Based on Post-Detection SINR Balancing in Cellular V-BLAST Systems

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