Transmission Pattern Selection for Relay Communication with Distributed Space-Time Codes
Abstract梂e propose an ef.cient space-time coded cooperative relay communications scheme that employs linear precoding and transmission-pattern selection. If effectively exploited, distributed spatial diversity and the cooperative nature of multihop communications could signi.cantly increase the coverage area of a wireless network that consists of a number of power-limited relay nodes. We build upon an existing block linear precoding technique for conventional multiple-input multiple-output systems studied in to improve the diversity performance of a multihop relay network. We propose a distributed-relay-selection algorithm to maximize the signal-to-noise ratio at the receiver. We show, via simulation, that the proposed pattern-selection scheme with precoding outperforms the conventional space-time coded relay system using quasi-orthogonal space-time block codes by over 2 dB at a bit error rate of 10(-3).
Multihop relay cooperative communications space-time block codes linear precoding distributed relay terminal selection.
Roderick Jaehoon Whang Huaping Liu Een Kee Hong
School of EECS,Oregon State University,Corvallis,Oregon,U.S.A Department of Radio Communication Engineering,Kyunghee University,Kyeonggi-do,Korea.
国际会议
广州
英文
2008-11-19（万方平台首次上网日期，不代表论文的发表时间）