Title :
New time diversity structure used in free space optics links with a tracking system
Author :
Peng Liu ; Song Liu ; Xueying Wu
Author_Institution :
Sch. of Electr. & Electron. Eng., North China Electr. Power Univ., Beijing, China
Abstract :
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.
Keywords :
atmospheric turbulence; diversity reception; error statistics; optical links; telecommunication network reliability; BER; FSO links; FSO system; atmospheric turbulence; beam tracking; closed-form bit error rate; diversity signals; dual-diversity scheme; free space optics links; mitigation technique; photo detector noise; power-fading model; time diversity structure; time-diversity scheme; tracking error; tracking system; transmission reliability; Adaptive optics; Bit error rate; Diversity methods; Optical fiber communication; Optical fibers; Optical receivers; Optical transmitters; Free space optical communication; time diversity; tracking system;
Conference_Titel :
Communications in China Workshops (ICCC), 2012 1st IEEE International Conference on
Conference_Location :
Bejing
Print_ISBN :
978-1-4673-2996-5
Electronic_ISBN :
978-1-4673-2995-8
DOI :
10.1109/ICCCW.2012.6316476
