Asymptotic Analysis on Diversity Receptions Over Fading Channels With Correlated Shadowing

Asymptotic Analysis on Diversity Receptions Over Fading Channels With Correlated Shadowing
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具有相关阴影的衰落信道分集接收的渐近分析

DOI:
10.1109/tvt.2019.2926536
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发表时间:
2019-07
影响因子:
6.8
通讯作者:
Zhang Zaichen
Zhang Zaichen
中科院分区:
计算机科学2区
文献类型:
--
作者:
Zhu Bingcheng;Zhang Zaichen

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超密集无线网络在对数正态阴影的去相关距离内部署多个天线,这使得执行性能分析变得具有挑战性。本文研究了复合对数正态X衰落信道中对数正态阴影分量相关的分集接收的渐近性能。推导了最大比合并、等增益合并和选择合并的渐近误码率和中断概率的封闭表达式。结果表明,对数正态分量之间的相关性只对性能表达式贡献一个常数因子,并不改变分集阶数。
Ultra-dense wireless networks deploy multiple antennas within the decorrelation distance of lognormal shadowing, making it challenging to perform performance analysis. In this correspondence paper, we study the asymptotic performance of diversity receptions over composite lognormal-X fading channels, where the lognormal shadowing components are correlated. Closed-form asymptotic error rate and outage probability expressions of maximum-ratio combining, equal-gain combining, and selection combining are derived. It is revealed that the correlation between lognormal components only contributes a constant factor to the performance expressions, and does not change the diversity order.
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