上海交通大学学报

上海交通大学学报（自然版） ›› 2012, Vol. 46 ›› Issue (11): 1826-1832.

• 无线电电子学、电信技术 • 上一篇    下一篇

基于QRD和SIC检测的多入多出中继网络分布式波束形成方案

黄自立，蒋铃鸽，何晨   

  1. (上海交通大学 电子信息与电气工程学院，上海200240)  
  • 收稿日期:2011-11-12 出版日期:2012-11-30 发布日期:2012-11-30
  • 基金资助:

    国家自然科学基金资助项目（60872017，60772100），国家高技术研究发展计划（863）项目(2009AA011505)， 国家科技重大专项（2010ZX0300300203,2011ZX0300300103)资助

Distributed Beamforming Schemes Based on QR Decomposition and SIC Detection for MIMO Relay Networks

 HUANG  Zi-Li, JIANG  Ling-Ge, HE  Chen   

  1. (School of Electronic， Information and Electrical Engineering, Shanghai Jiaotong University, Shanghai 200240, China)
  • Received:2011-11-12 Online:2012-11-30 Published:2012-11-30

摘要：   摘要： 
考虑多天线多中继两跳半双工无线网络，基于AF协议提出了RZF和IRZFMF 2种分布式波束形成方案.在中继节点，前者使用RZF技术进行接收和发射波束形成，后者分别使用IRZF和MF技术进行接收和发射波束形成.仿真结果显示，在瑞利信道下，2种方案与现有的MFRZF方案性能相当；而在莱斯信道下，文中RZF方案性能最优，但需要较高的计算复杂度.相对于除RZF方案的其他方案，IRZFMF实现了系统容量增益，并且其计算复杂度低于RZF方案.
关键词： 
多输入多输出； 放大转发中继； 分布式波束形成； 正则化迫零预编码； QR分解
中图分类号：  TN 925
文献标志码：  A    

Abstract: This paper is concerned with a two hop half-duplex wireless communication network with multiple antennas and multiple relays. Based on amplifyandforward (AF) protocol, two new distributed beamforming schemes named IRZF-MF and RZF were proposed for this system. The RZF scheme uses RZF technique for both receive and transmit beamforming while the IRZF-MF scheme uses IRZF and MF technique for receive and transmit beamforming respectively. The simulation results show that the proposed two relay schemes achieve the same performance of existing MF-RZF scheme in the Rayleigh channel, meanwhile, the proposed RZF scheme achieves the best performance which requires a higher computational complexity and the proposed IRZFMF scheme achieves the second best performance while requires less computational complexity than RZF scheme in the Rician channel compared with other existing distributed relaying schemes. Key words：

Key words: multiple-input multiple-output (MIMO), AF relay, distributed beamforming, regularized zero-forcing precoding, QR decomposition