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Error Rate of Subcarrier Intensity Modulations for Wireless Optical Communications

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3 Author(s)
Xuegui Song ; School of Engineering, The University of British Columbia, Kelowna, BC V1V 1V7, Canada ; Mingbo Niu ; Julian Cheng

Subcarrier intensity modulations are analyzed for the Gamma-Gamma turbulence channels. We study the error rate of a subcarrier intensity modulated wireless optical communication system employing phase-shift keying, differential phase-shift keying, and noncoherent frequency-shift keying. Closed-form error rate expressions are derived using a series expansion approach. Asymptotic error rate analysis and truncation error analysis are also presented. Our asymptotic analysis shows that the diversity order of the system and the signal-to-noise ratio penalty factors for noncoherent modulations depend only on the smaller channel parameter.

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IEEE Communications Letters  (Volume:16 ,  Issue: 4 )