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首页> 外文期刊>International journal of communication systems >Analysis of spectrally efficient two-way relay assisted free space optical systems in atmospheric turbulence with path loss
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Analysis of spectrally efficient two-way relay assisted free space optical systems in atmospheric turbulence with path loss

机译：具有路径损耗的大气湍流中光谱有效的双向中继辅助自由空间光学系统的分析

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摘要

In this paper, we investigate the performance of two-way relay assisted free space optical systems over atmospheric turbulence-induced fading channels affected by molecular absorbtion-induced path losses. A three node, dual-hop, bi-directional, half-duplex relaying system with independent but not necessarily identically distributed channels is considered. Spectral efficiency is achieved by employing network coding to complete data transmission in two-time phases. Closed form expression for system outage performance is derived considering decode-and-forward protocol. Additionally, the error performance in terms of average symbol error rate for M-ary phase shift keying is evaluated. Further, the net achievable capacity of the system is also calculated. Copyright © 2014 John Wiley & Sons, Ltd.
机译：在本文中，我们研究了双向中继辅助自由空间光学系统在受分子吸收引起的路径损耗影响的大气湍流引起的衰落通道上的性能。考虑具有独立但不一定相同分布的信道的三节点，双跳，双向，半双工中继系统。通过采用网络编码完成两次阶段的数据传输，可以达到频谱效率。考虑到解码转发协议，得出了用于系统中断性能的闭式表达式。另外，评估了针对M元相移键控的平均符号错误率的错误性能。此外，还计算了系统的净可实现容量。版权所有©2014 John Wiley＆Sons，Ltd.

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