Performance of Multi-hop M-ary PPM FSO Systems with SIMO Links over Strong Atmospheric Turbulence Channel and Pointing Errors

被引：0
|
作者：
Dang, Ngoc T. [1 ]
Nguyen, Long H. [1 ]
Pham, Hien T. T. [1 ]
机构：
[1] Posts & Telecommun Inst Technol, Fac Telecommun, Hanoi, Vietnam
来源：
2013 THIRD WORLD CONGRESS ON INFORMATION AND COMMUNICATION TECHNOLOGIES (WICT) | 2013年
关键词：
Free-space optical communication (FSO); multi-hop transmission; atmospheric turbulence; pointing errors; receiver diversity; pulse-position modulation (PPM); COMMUNICATION; TRANSMISSION;
D O I：
暂无
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
Strong atmospheric turbulence and pointing errors are major challenges in free-space optical communication (FSO) systems. In this paper, in order to overcome these challenges, we propose to employ multi-hop transmission with single-input multiple-output (SIMO) links (i.e., receiver diversity) in FSO systems. In addition, M-ary pulse-position modulation (PPM) and symbol detect-and-forward relaying scheme will be used to further improve the system performance. We formulate the closed-form expressions for bit error rate (BER) of multi-hop M-ary PPM FSO systems with equal gain combining (EGC) and maximum ratio combining (MRC) diversity techniques taking into account the effects of background noise and thermal noise. Numerical results indicate that the combination of multi-hop transmission and receiver diversity is a great solution for reducing effects of strong atmospheric turbulence and pointing errors.
引用
收藏
页码：121 / 126
页数：6
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