TDD LTE预编码码本选择算法

doi:10.13190/jbupt.201203.30.355

北京邮电大学学报 ›› 2012, Vol. 35 ›› Issue (3): 30-33.doi: 10.13190/jbupt.201203.30.355

TDD LTE预编码码本选择算法

付卫红,张飞,赵春宝,陈柏宇

西安电子科技大学综合业务网理论及关键技术国家重点实验室，西安 710071

收稿日期:2011-03-04 修回日期:2011-10-24 出版日期:2012-06-28 发布日期:2012-02-29
通讯作者: 付卫红 E-mail:whfu@mail.xidian.edu.cn
作者简介:付卫红（1979-），女，副教授，硕士生导师，E-mail：whfu@mail.xidian.edu.cn
基金资助:
高等学校学科创新引智计划资助项目（B08038）；中央高校基本科研业务费专项资金项目（72124669）

A Selection Algorithm of Precoding Codebook for TDD LTE

FU Wei-hong, ZHANG Fei, ZHAO Chun-bao,CHEN Bo-yu

State Key Laboratory of Integrated Services Networks, Xidian University, Xian 710071, China

Received:2011-03-04 Revised:2011-10-24 Online:2012-06-28 Published:2012-02-29
Contact: FU Wei-Hong E-mail:whfu@mail.xidian.edu.cn

摘要/Abstract

摘要：

为解决时分双工长期演进（TDD-LTE）系统中预编码码本选择算法计算复杂度高的问题，在基于容量最大化和基于误码率最小为准则的预编码选择算法的基础上，提出了一种基于信道奇异值分解的预编码选择算法. 该算法采用信道平均的思想和发射信号有效功率最大化的准则，在不损失吞吐量性能的前提下，大大降低了算法复杂度．仿真结果表明，该算法所需的计算量只有上述传统算法的26%~33%，而吞吐量性能损失不大．

关键词: 长期演进, 多输入多输出, 预编码, 信干噪比, 奇异值分解

Abstract:

To solve high computational complexity problems in selection algorithm of precoding codebook for time division duplex(TDD) long term evolution (LTE), two traditional selection algorithms, i.e. maximizing mutual information and minimizing error rate are studied. And based on singular value decomposition of channel matrix, a new precoding matrix index selection algorithm is presented. The algorithm reduces the computational complexity enormously by using the idea of channel average and maximizes effective power of transmitted signals. Simulations show that the computation of the algorithm presented is 26%~33% of those above these traditional algorithms but performance loss is very small.

Key words: long term evolution, multi-input multi-output, precoding matrix, signal to interference noise ratio, singular value decomposition

中图分类号:

TN92

付卫红张飞赵春宝陈柏宇. TDD LTE预编码码本选择算法[J]. 北京邮电大学学报, 2012, 35(3): 30-33.

参考文献

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TDD LTE预编码码本选择算法

A Selection Algorithm of Precoding Codebook for TDD LTE

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