Average bit error rate performance analysis of subcarrier intensity modulated MRC and EGC FSO systems with dual branches over M distribution turbulence channels

Abstract

Based on the space diversity reception, the binary phase-shift keying (BPSK) modulated free space optical (FSO) system over Málaga (M) fading channels is investigated in detail. Under independently and identically distributed and independently and non-identically distributed dual branches, the analytical average bit error rate (ABER) expressions in terms of H-Fox function for maximal ratio combining (MRC) and equal gain combining (EGC) diversity techniques are derived, respectively, by transforming the modified Bessel function of the second kind into the integral form of Meijer G-function. Monte Carlo (MC) simulation is also provided to verify the accuracy of the presented models.

Keywords

Monte Carlo / Fading Channel / Maximal Ratio Combine / Scintillation Index / Free Space Optical

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This work has been supported by the National Natural Science Foundation of China (No.61474090), the Nature Science Basic Research Plan in Shaanxi Province of China (No.2014JM8340), and the China Postdoctoral Science Special Foundation (No.201104659).