单输入多输出自由空间光通信中光束漂移抑制的实验研究

M. Ijaz, Georgina Harris, B. Adebisi, W. Popoola, S. Rajbhandari
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引用次数: 6

摘要

本文对单输入多输出自由空间光通信系统在室内实验室可控湍流室中的应用进行了实验研究。两个接收电路用于单个激光输入。采用等增益组合(EGC)方案对两个接收机的电流输出进行组合,并与单输入单输出(SISO) FSO系统进行比较。在大气腔内产生弱湍流,采用开关键控(OOK)调制方案的ß-因子和误码率(BER)对链路性能进行了测量。结果表明,最简单的SIMO形式可以改善FSO通信信道在弱湍流条件下的性能。
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Experimental study of the beam wander mitigation in free space optical communications using single input multiple output system
This paper experimentally investigates the use of a single input multiple output (SIMO) free space optical (FSO) communication system in an indoor laboratory controlled turbulence chamber. Two receiver circuits are used with a single laser input. The current outputs of two receivers were combined using equal gain combining (EGC) scheme and compared with single input single output (SISO) FSO system. A weak turbulence was generated within the atmospheric chamber and link performances are measured using ß-factor and bit error rate (BER) for On-Off Keying (OOK) modulation scheme. The results demonstrated that the simplest form of SIMO can improve the performance of the FSO communication channel under weak turbulent condition.
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