Outage Probability of Opportunistic Decode-and-Forward Relaying over Correlated Shadowed Fading Channels

Outage Probability of Opportunistic Decode-and-Forward Relaying over Correlated Shadowed Fading Channels
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相关阴影衰落信道上机会解码和转发中继的中断概率

DOI:
10.1007/s11277-016-3470-y
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发表时间:
2016-07
影响因子:
2.2
通讯作者:
Mu Jiasong
Mu Jiasong
中科院分区:
计算机科学4区
文献类型:
--
作者:
Han Liang;Mu Jiasong

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对于机会中继,不同的中继分布在不同的位置,因此不同链路之间的阴影可能是不同的和相关的。在这封信中,我们研究了相关对数正态阴影对机会解码转发中继中断概率的影响。由于没有封闭形式的中断概率的表达式,我们提出了一个解相关变换,然后使用高斯-厄米积分技术来评估这个中断概率。数值和仿真结果验证了该方法的准确性,并表明阴影相关系数和标准差对中断性能有显著影响。
For opportunistic relaying, different relays are distributed in different locations, so the shadowing between different links is likely to be different and correlated. In this letter, we investigate the effect of correlated log-normal shadowing on the outage probability of opportunistic decode-and-forward relaying. Since there is no closed-form expression for the outage probability, we present a decorrelating transformation and then use Gaussian–Hermite integration technique to evaluate this outage probability. The numerical and simulation results verify that our proposed approach is accurate, and show that the correlation coefficients and standard deviations of shadowing have a significant impact on the outage performance.
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