北京邮电大学学报

  • EI核心期刊

北京邮电大学学报 ›› 2010, Vol. 33 ›› Issue (2): 29-33.doi: 10.13190/jbupt.201002.29.263

• 论文 • 上一篇    下一篇

MIMO中继系统中的线性鲁棒收发机联合设计

张彬 贺志强 牛凯   

  1. (泛网无线通信教育部重点实验室(北京邮电大学),北京 100876)
  • 收稿日期:2009-06-02 修回日期:2009-10-10 出版日期:2010-04-28 发布日期:2010-04-28
  • 通讯作者: 张彬 E-mail:zhangbin.bupt@gmail.com
  • 作者简介:张 彬(1983—), 男, 博士生, Email: zhangbin.bupt@gmail.com; 贺志强(1976—), 男, 副教授.
  • 基金资助:

    国家重点基础研究发展计划项目(2007CB310604,2009CB320401);国家高技术研究发展计划项目(2009AA01Z233)

Robust Linear Transceiver Design in MIMO Relay System

ZHANG Bin, HE Zhi-qiang, NIU Kai   

  1. (Key Laboratory of Universal Wireless Communications (Beijing University of Posts and Telecommunications),Ministry of Education, Beijing 10086, China)
  • Received:2009-06-02 Revised:2009-10-10 Online:2010-04-28 Published:2010-04-28
  • Contact: Zhang Bin E-mail:zhangbin.bupt@gmail.com

摘要:

为了获得理想的信道估计,针对单中继节点的非再生多输入多输出中继系统及部分信道状态信息,提出了一种鲁棒的基于最小均方误差准则的线性收发机联合设计方案. 假设信道估计误差是独立的复高斯变量,在源节点和中继节点平均发射功率受限的条件下,对源节点、中继节点和目的节点进行联合设计,通过迭代算法可得到各节点的线性处理矩阵. 仿真结果表明,与其他方案相比,联合设计方案具有较好的鲁棒性和误比特率性能.

关键词: 多输入多输出中继系统, 信道状态信息, 最小均方误差, 联合设计

Abstract:

Considering that the channel state information is often imperfect due to the noise and interference, a robust joint linear transceiver design scheme is proposed based on minimum mean square error criterion for a nonregenerative multipleinput multipleoutput(MIMO) relay system. Assuming that the channel estimation errors are independent complex Gaussian with zero mean and known secondorder statistics, the processing matrices at the source, relay and destination nodes could be derived through an iterative algorithm under average power constraint at both the source and the relay nodes. Simulations show that the joint design scheme is more robust and it can achieve a better bit error rate performance compared with the conventional zero forcing and minimum mean square error transceiver design schemes. 

Key words: multipleinput multipleoutput relay system, channel state information, minimum mean square error, joint design

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