Optimal relay placement and diversity analysis of relay-assisted free-space optical communication systems
Optimal relay placement and diversity analysis of relay-assisted free-space optical communication systems
复制标题
DOI：
10.1364/jocn.5.000037
复制
发表时间：
2013
期刊：
影响因子：
--
通讯作者：
M. A. Kashani;M. Safari;M. Uysal
中科院分区：
文献类型：
--
作者：
M. A. Kashani;M. Safari;M. Uysal
中继辅助自由空间光(FSO)传输利用了大气湍流衰落变化与距离相关的事实，并通过利用所产生的较短跳数来产生显著的性能增益。本文研究了如何在串、并行FSO中继中确定最优的中继位置，以最小化中断概率，并量化了通过最优的中继位置所获得的性能改善。在此基础上，给出了串、并行FSO中继方案的分集增益分析，并从中继数和信道参数两个方面量化了它们的分集优势。
Relay-assisted free-space optical (FSO) transmission exploits the fact that atmospheric turbulence fading variance is distance dependent and yields significant performance gains by taking advantage of the resulting shorter hops. In this paper, we investigate how to determine optimal relay locations in serial and parallel FSO relaying so as to minimize the outage probability and quantify performance improvements obtained through optimal relay placement. We further present a diversity gain analysis for serial and parallel FSO relaying schemes and quantify their diversity advantages in terms of the number of relays and channel parameters.