MIMO系统中发射端信道信息不准确时的TH预编码器的设计  

Tomlinson-Harashima precoder design for MIMO channels with inaccurate channel state information at transmitter

作　　者：奚家熹[1] 方朝曦[1] 王宗欣[1] 

机构地区：[1]复旦大学通信科学与工程系,上海200433

出　　处：《吉林大学学报（工学版）》2008年第1期229-232,共4页Journal of Jilin University:Engineering and Technology Edition

基　　金：国家自然科学基金项目(60572124)

摘　　要：针对实际使用预编码方法消除符号间干扰时,发射端获取的信道信息与真实信道信息间存在差异,提出了一种在MIMO系统中考虑发射端信道信息与真实信道信息间差异时的TH预编码器的设计方法。该方法在MMSE准则下使用贝叶斯方法设计预编码器。仿真结果表明:该预编码器比传统的MMSE-TH预编码器有更好的性能。Precoding can be used in MIMO communication system to combat inter-symbol interference. The performance of precoding is related with the channel state information at transmitter. The difference between channel state information at transmitter and true channel state information should be considered in design. In this paper, a new Tomlinson Harashima （TH） precoding scheme which considers the difference is proposed. The results of simulation show that this new THP outperforms the conventional MMSE-THP.

关 键 词：通信技术 多输入多输出 预编码 信道信息 贝叶斯 

分 类 号：TN941.4[电子电信—信号与信息处理]