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.

引用

页数：5

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