Performance of multi-hop parallel free-space optical communication over gamma-gamma fading channel with pointing errors
Performance of multi-hop parallel free-space optical communication over gamma-gamma fading channel with pointing errors
复制标题
具有指向误差的伽马-伽马衰落信道上多跳并行自由空间光通信的性能
DOI：
10.1364/ao.55.009178
复制
发表时间：
2016-11-10
期刊：
影响因子：
1.9
通讯作者：
Lu, Wei
中科院分区：
文献类型：
--
作者：
Gao, Zhengguang;Liu, Hongzhan;Lu, Wei
研究了在γ-γ（GG）分布和失调衰落联合作用下，采用二进制相移键控（BPSK）调制的自由空间光通信系统中的多跳并行中继问题。基于最佳路径选择准则，推导了该协作随机变量的累积分布函数。然后详细分析了该光网状网络的性能。蒙特卡洛仿真也进行了证明的平均误码率（ABER）和中断概率的结果的有效性。数值结果表明，在FSO链路中采用多跳并行网络时，要达到相同的ABER和中断概率，需要较小的平均发射光功率。此外，系统使用更多的跳数和协作路径可以提高通信质量。(C)2016美国光学学会
Multi-hop parallel relaying is considered in a free-space optical (FSO) communication system deploying binary phase-shift keying (BPSK) modulation under the combined effects of a gamma-gamma (GG) distribution and misalignment fading. Based on the best path selection criterion, the cumulative distribution function (CDF) of this cooperative random variable is derived. Then the performance of this optical mesh network is analyzed in detail. A Monte Carlo simulation is also conducted to demonstrate the effectiveness of the results for the average bit error rate (ABER) and outage probability. The numerical result proves that it needs a smaller average transmitted optical power to achieve the same ABER and outage probability when using the multi-hop parallel network in FSO links. Furthermore, the system use of more number of hops and cooperative paths can improve the quality of the communication. (C) 2016 Optical Society of America