过时CSI条件下AF机会中继变速率自适应调制性能分析

2011 IEEE 22nd International Symposium on Personal, Indoor and Mobile Radio Communications Pub Date : 2011-09-01 DOI:10.1109/PIMRC.2011.6139808

M. Torabi, J. Frigon, D. Haccoun

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引用次数: 4

摘要

分析了过时信道状态信息(CSI)对瑞利衰落信道上扩前(AF)机会中继系统可变速率自适应正交调幅(M-QAM)性能的影响。导出了过时CSI下的平均频谱效率、中断概率和平均误码率的封闭表达式。通过数值评估，比较了不同情况下的性能，显示了过时的CSI对自动对焦机会中继系统中所考虑的速率自适应调制方案性能的影响。

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Performance analysis of variable-rate adaptive modulation for AF opportunistic relaying under outdated CSI

The impact of outdated channel state information (CSI) on the performance of variable-rate adaptive M-ary quadrature amplitude modulation (M-QAM) in an amplify-and-forward (AF) opportunistic relaying system over Rayleigh fading channels is analyzed. Closed-form expressions are derived for the average spectral efficiency, outage probability and the average bit error rate under outdated CSI. Using numerical evaluations, the performances of different cases are compared showing the impact of outdated CSI on the performance of the considered rate-adaptive modulation scheme in AF opportunistic relaying systems.

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来源期刊

2011 IEEE 22nd International Symposium on Personal, Indoor and Mobile Radio Communications

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