Power Allocation Algorithms for ZF-THP Sum Rate Optimization in Multi-user Multi-antenna Systems

被引：0
|
作者：
Lee, Wookbong [1 ]
Song, Changick [1 ]
Lee, Sangrim [1 ]
Lee, Kilbom [1 ]
Kwak, Jin Sam [2 ]
Lee, Inkyu [1 ]
机构：
[1] Korea Univ, Sch Elect Engn, Seoul, South Korea
[2] LG Elect, Anyang, South Korea
来源：
2012 IEEE 75TH VEHICULAR TECHNOLOGY CONFERENCE (VTC SPRING) | 2012年
基金：
新加坡国家研究基金会;
关键词：
VECTOR PERTURBATION; BROADCAST CHANNELS; MULTIANTENNA; DOWNLINK; INTERFERENCE; CAPACITY;
D O I：
暂无
中图分类号：
TN [电子技术、通信技术];
学科分类号：
0809 ;
摘要：
In this paper, we study a power allocation technique for Tomlinson-Harashima precoding (THP) in multi-user multiple input single output (MISO) downlink systems. In contrast to previous approaches, a mutual information based method is exploited for maximizing the sum rate of zero-forcing THP systems. Then, we propose a simple power allocation algorithm which assigns proper power level for modulo operated users. Simulation results show that the proposed scheme outperforms a conventional water-filling method, and achieves near optimal performance with much reduced complexity.
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页数：5
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