Joint maximum likelihood detection and link selection for cooperative MIMO relay systems

被引:8
作者
Hesketh, Thomas [1 ]
de Lamare, Rodrigo C. [1 ,2 ]
Wales, Stephen [3 ]
机构
[1] Univ York, Dept Elect, Commun Res Grp, York YO10 5DD, N Yorkshire, England
[2] Pontificia Univ Catolica Rio de Janeiro, Ctr Studies Telecommun, BR-22453900 Rio de Janeiro, Brazil
[3] Roke Manor Res Ltd, Romsey SO51 0ZN, Hants, England
关键词
PERFORMANCE ANALYSIS; WIRELESS NETWORKS; POWER ALLOCATION; DIVERSITY; ALGORITHMS; CAPACITY; CODES;
D O I
10.1049/iet-com.2013.0882
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
In this study, the authors propose a cross layer design strategy that consists of a cooperative maximum likelihood detector operating in conjunction with link selection for cooperative multiple-input multiple-output relay networks. The system considered is a two phase relaying model, with amplify-and forward relays. The model considers the effect of relay placement and of large scale shadowing. The authors develop a cooperative maximum likelihood detector for an arbitrary number of relays, and link selection schemes are devised for two scenarios relating to the available knowledge at the destination node, which considers relay combination, with complexity analysis. The authors also propose a cooperative list sphere decoder that processes soft information and implements an iterative detection and decoding scheme. The results of simulations of the systems are presented, with comparisons to system models used in previous literature, and show how the cooperative detector and the proposed link selection schemes affect the bit error rate performance at the destination node, for both the hard decision non-iterative case, and the soft information iterative processing case.
引用
收藏
页码:2489 / 2499
页数:11
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