无线信道协同中继网络中基于信噪比的天线选择方案

Erdogan Aydin, H. Ilhan, Ö. Özdemir
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引用次数: 3

摘要

为了降低源端和目的端为单天线而中继端为多天线的译发中继协同系统的端到端误码率,本文提出了两种基于信噪比的天线选择模型。具体而言,利用源到目的、源到中继和中继到目的链路的瞬时信噪比和平均信噪比,从理论上推导出中继终端天线选择的最优决策规则。推导了瑞利衰落信道下两种天线选择模型下系统的误码率表达式。理论和仿真结果表明了所提数学分析的有效性,并指出了理论结果的正确性。
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SNR-based antenna selection schemes for cooperative relay networks in wireless channels
In this paper, two different antenna selection models based on signal-to-noise ratio (SNR) have been proposed in order to reduce the end-to-end bit error rate (BER) of decode and forward (DF) relaying cooperative system where source and destination terminals contain single antenna while relay terminal has multiple antennas. Specifically, by using instantaneous and average SNR of source-to-destination, source-to-relay and relay-to-destination links, optimal decision rules are derived theoretically for antenna selection at the relay terminal. Later, BER expressions of considered system have been derived for two antenna selection models over Rayleigh fading channels. Theoretical and simulation results show the validity of proposed mathematical analysis and point out the confirmation of theoretical results.
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