BER and Outage Probability of DPSK Subcarrier Intensity Modulated Free Space Optics in Fully Developed Speckle

BER and Outage Probability of DPSK Subcarrier Intensity Modulated Free Space Optics in Fully Developed Speckle
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DOI：
10.4304/jcm.4.8.546-554
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发表时间：
2009-01
期刊：
J. Commun.
影响因子：
--
通讯作者：
W. Popoola;Zabih Ghassemlooy;E. Leitgeb
W. Popoola;Zabih Ghassemlooy;E. Leitgeb
中科院分区：
其他
文献类型：
--
作者：
W. Popoola;Zabih Ghassemlooy;E. Leitgeb

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In this paper a differential phase shift keying (DPSK) subcarrier intensity modulated (SIM) free space optical (FSO) link is considered in negative exponential atmospheric turbulence environment. To mitigate the scintillation effect, the selection combining spatial diversity scheme (SelC) is employed at the receiver. Bit error rate (BER) and outage probability (Pout) analysis are presented with and without the SelC spatial diversity. It is shown that at a BER of 10-6, a maximum diversity gain 25 dB is predicted. And about 60 dBm signal power is required to achieve an outage probability of 10-6, based on a threshold BER of 10-4.