上海交通大学学报

上海交通大学学报（自然版） ›› 2011, Vol. 45 ›› Issue (07): 1050-1053.

• 无线电电子学、电信技术 • 上一篇    下一篇

多进多出中继系统中基于失真信道估计的线性预编码

邹俊1，刘伟1，罗汉文1，俞晖1，马继鹏2   

  1. (1. 上海交通大学 电子信息与电气工程学院， 上海 200240；2. 无线移动通信国家重点实验室（电信科学技术研究院）＼联芯科技有限公司， 上海 201206)
  • 收稿日期:2010-07-07 出版日期:2011-07-29 发布日期:2011-07-29
  • 基金资助:

    国家科技重大专项（2009ZX03002003）资助项目

Linear Precoder Design for Amplify-and-Forward MIMO Relay Systems with Channel Estimation Errors

 ZOU  Jun-1, LIU  Wei-1, LUO  Han-Wen-1, YU  Hui-1, MA  Ji-Peng-2   

  1. (1. School of Electronic, Information and Electrical Engineering, Shanghai Jiaotong University, Shanghai 200240, China; 2. State Key Laboratory of Wireless Communications(CATT)＼Leadcore Technology Co., Ltd., Shanghai 201206, China）
  • Received:2010-07-07 Online:2011-07-29 Published:2011-07-29

摘要： 在放大转发多进多出(MIMO)中继系统基础上，提出了一种基于失真信道估计的中继线性预编码设计方案.该方案将信道估计误差建模为高斯随机变量，并根据最小均方误差（MMSE）准则，通过理论推导给出了闭式解.数值仿真结果表明，与不考虑信道估计误差时的方案相比，该方案有效降低了系统的均方误差和误码率. 

关键词: 放大转发, 多进多出, 中继, 预编码, 最小均方误差

Abstract:

 A linear relay precoder design scheme was proposed for the amplifyandforward MIMO relay system with channel estimation errors modeled as Gaussian random variables. The closedform solution was derived based on the minimum mean squared error (MMSE) criterion. The numerical results show that compared with other schemes that do not consider channel estimation errors, our scheme achieves better performance in terms of both mean squared error (MSE) and bit error rate (BER).

Key words: precoder, minimum mean squared error (MMSE), amplify-and-forward (AF), multiple input multiple output (MIMO), relay