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New time diversity structure used in free space optics links with a tracking system

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3 Author(s)
Peng Liu ; Sch. of Electr. & Electron. Eng., North China Electr. Power Univ., Beijing, China ; Song Liu ; Xueying Wu

This paper proposed a new time diversity structure using over free-space optics (FSO) links with a tracking system. A dual-diversity scheme with beam tracking introduces a power-fading model for an FSO system utilizing beam tracking through atmospheric turbulence. Further, the paper derives a closed-form bit error rate (BER) for time-diversity scheme, taking into account the tracking error, coherence of the diversity signals and photo detector noise. It is shown that time diversity is a clever mitigation technique for improving transmission reliability for the FSO system with beam tracking.

Published in:

Communications in China Workshops (ICCC), 2012 1st IEEE International Conference on

Date of Conference:

15-17 Aug. 2012