具有相关阴影的κ−µ衰落信道容量高阶统计量分析

A. Gvozdarev
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引用次数: 1

摘要

研究了采用最大比组合方案的单输入多输出多天线无线通信系统的容量高阶统计量。假设传播多径信道用具有相关主导分量的κ−µ衰落模型来描述。导出了封闭形式和渐近表达式,并将其应用于最小容量可靠性问题(由于信道波动,可能导致速率恶化)和相应的信噪比分析。计算机仿真验证了所得表达式的正确性,以及具有相关阴影的广义κ−µ衰落信道,并假设了几种特定的极限简化情况:Rayleigh,专家和Nakagami-m。结果表明,该模型的信噪比(达到最小容量可靠性时的信噪比)大于简化模型的信噪比,并且该最小值的绝对值可以小于或高于简并模型,这取决于主导分量的一步相关系数。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Capacity Higher-Order Statistics Analysis for κ − µ Fading Channels with Correlated Shadowing
The proposed research performs an analysis of the capacity higher-order statistics for a single-input multiple-output multiantenna wireless communication system equipped with a maximum-ratio combining scheme. It was assumed that the propagation multipath channel is described with the κ −µ fading model with the correlated dominant components. Closed-form and asymptotic expressions were derived and applied to the problem of minimum capacity reliability (due to channel fluctuations, thus possible rate deterioration) and corresponding signal-to-noise ratio analysis. The performed computer simulation, verifying the correctness of the obtained expressions, along with the generalized κ −µ fading channel with correlated shadowing, assumed several specific limiting simplified cases: Rayleigh, Rician and Nakagami-m. It was shown that the signal-to-noise ratio (at which minimum capacity reliability is attained) is achieved at greater values than that of simplified models, and the absolute value of this minimum can be smaller/higher than for the degenerate cases depending on the dominant components one-step correlation coefficient.
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