MRC and selection combining in dual-hop AF systems with Rician fading

Samy S. Soliman
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引用次数: 12

Abstract

Maximum ratio combining (MRC) and selection combining (SC) are studied for multi-branch dual-hop amplify-and-forward relaying systems. Expressions for the statistical metrics, such as the probability density function, cumulative distribution function and the moment generating function are obtained for systems operating over independent but non-identically distributed Rician fading links. Such systems can be used to model heterogeneous indoor environments where a number of relay nodes are available for line-of-sight cooperative communications. Performance metrics, such as the average error probabilities and outage probabilities, are evaluated for the systems under study to investigate the effects of the link fading parameters as well as the number of available relays on system performance. It is shown that, while the diversity order of such combining systems does not depend on the line-of-sight parameter, it is proportional to the number of available relays, for MRC systems as well as for SC systems.
具有梯度衰落的双跳AF系统的MRC和选择组合
研究了多支路双跳放大转发中继系统的最大比组合和选择组合。得到了系统在独立但非同分布的衰落链路上运行时的统计度量的概率密度函数、累积分布函数和矩产生函数的表达式。这样的系统可用于模拟异构室内环境,其中许多中继节点可用于视距协作通信。性能指标,如平均错误概率和中断概率,被评估的系统,以调查链路衰落参数的影响,以及可用中继的数量对系统性能。结果表明,尽管这种组合系统的分集顺序不依赖于视距参数,但它与可用继电器的数量成正比,无论是MRC系统还是SC系统。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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