MSMSE-based optimal beamforming design and simplification on AF MIMO two-way relay channels

被引：0
作者：
王梓斌 [1 ]
向良军 [1 ]
郑林华 [1 ]
丁宏 [1 ]
机构：
[1] School of Electronic Science and Engineering, National University of Defense Technology
来源：
JournalofCentralSouthUniversity | 2012年 / 19卷 / 02期
基金：
中国国家自然科学基金;
关键词：
beamforming; two-way relay channels; amplify-and-forward; multiple input multiple output;
D O I：
暂无
中图分类号：
TN919.3 [数据传输技术];
学科分类号：
0810 ; 081001 ;
摘要：
An optimal cooperative beamforming for the amplify-and-forward (AF) MIMO two-way relay channels was designed. Supposing the channel state information (CSI) was perfectly known by the receiver and transmitter as well as the relay, optimal beamforming vectors (matrices) of all nodes were jointly designed based on the criterion of minimizing the sum mean square errors (MSMSE). The analysis result shows that the performance effect of transmitting and receiving beamforming pairs is to maximize the receive signal-to-noise ratio (SNR) at two communication nodes, and the rank of the optimal relay beamforming matrix is no larger than two when there is only one data stream at each source node. A simplified algorithm was put forward to accomplish the design based on the analysis conclusions. Simulation results provide that the system performance, which is characterized in terms of bit error rates (BER), is significantly improved by cooperative beamforming, and the performance of the simplified method is not only very close to the optimal one but also with faster iteration speed and much lower computational complexity.
引用
收藏
页码：465 / 470
页数：6
相关论文
共 20 条
  • [1] Historical roots of contemporary issues involving self-concept. Harter S. Handbook of self-concept: Developmental, social, and clinical considerations . 1996
  • [2] Cooperative strategies and capacity theorems for relay networks. KRAMER G,GASTPAR M,GUPTA P. IEEE Transaction Information Theory . 2005
  • [3] Optimal analogue relaying withmulti-antennas for physical layer network coding. LIANG Ying-chang,ZHANG Rui. IEEE International Conference on Communication . 2008
  • [4] On the capacity of MIMO relay channels. WANG B,ZHANG J,HOST-MADSEN A. IEEE Transaction Information Theory . 2005
  • [5] Network coding with linear mimo pre-equalizer using modulo in two-way channel. KIM S,CHUN J. IEEE Wireless Communications and Networking Conference . 2008
  • [6] Linear precoder and decoder design for two-way af mimo relaying system. LEE N,PARK H,CHUN J. IEEE Transactions on Vehicular Technology . 2008
  • [7] Sum-rate maximization for two-way MIMO amplify-and-forward relaying systems. LEE K,LEE K W,SUNG H,LEE I. IEEE Transactions on Vehicular Technology . 2009
  • [8] Cooperative diversity in wireless networks: Efficient protocols and outage behavior. Laneman JN,Tse DNC,Wornell GW. IEEE Transactions on Information Theory . 2004
  • [9] Diversity and multiplexing: A fundamental tradeoff in multiple-antenna channels. Zheng L,Tse D N C. IEEE Transactions on Information Theory . 2003
  • [10] Generalized linear precoder and decoder design for MIMO channels using the weighted MMSE criterion. Sampath H,Stoica P,Paulraj A. IEEE Transactions on Communications . 2001
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