Research on diversity receive technology for wireless optical communication using PPM in weak turbulence atmosphere channel

被引：0

作者：

刘洋 ^{[1
]}

章国安 ^{[1
]}

机构：

[1] School of Electronics and Information, Nantong University

来源：

Optoelectronics Letters | 2014年 / 10卷 / 05期

基金：

中国国家自然科学基金;

关键词：

FSO; link; PPM; Research on diversity receive technology for wireless optical communication using PPM in weak turbulence atmosphere channel; MRC; EGC;

D O I：

暂无

中图分类号：

TN929.1 [光波通信、激光通信];

学科分类号：

0803 ;

摘要：

In order to mitigate atmospheric turbulence, the free space optical(FSO) system model with spatial diversity is analyzed based on intensity detection pulse position modulation(PPM) in the weak turbulence atmosphere. The slot error rate(SER) calculating formula of the system without diversity is derived under pulse position modulation firstly. Then as a benchmark, independent of identical distribution, the average slot error rates of the three linear combining technologies, which are the maximal ratio combining(MRC), equal gain combining(EGC) and selection combining(SelC), are compared. Simulation results show that the performance of system is the best improved by MRC, followed by EGC, and is poor by SelC, but SelC is simpler and more convenient. Spatial diversity is efficient to improve the performance and has strong ability on resistance to atmospheric channel decline. The above scheme is more suitable for optical wireless communication systems.

引用

页码：352 / 355

页数：4

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