Open AccessAverage BER of subcarrier intensity modulated free space optical systems over the exponentiated Weibull fading channels
Author(s) -
Ping Wang,
Lu Zhang,
Lixin Guo,
Feng Huang,
Tao Shang,
Ranran Wang,
Yintang Yang
Publication year - 2014
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.22.020828
Subject(s) - phase shift keying , fading , physics , free space optical communication , optics , exponentiated weibull distribution , bit error rate , monte carlo method , modulation (music) , weibull distribution , subcarrier , optical communication , statistical physics , mathematics , computational physics , statistics , decoding methods , orthogonal frequency division multiplexing , estimator , acoustics
The average bit error rate (BER) for binary phase-shift keying (BPSK) modulation in free-space optical (FSO) links over turbulence atmosphere modeled by the exponentiated Weibull (EW) distribution is investigated in detail. The effects of aperture averaging on the average BERs for BPSK modulation under weak-to-strong turbulence conditions are studied. The average BERs of EW distribution are compared with Lognormal (LN) and Gamma-Gamma (GG) distributions in weak and strong turbulence atmosphere, respectively. The outage probability is also obtained for different turbulence strengths and receiver aperture sizes. The analytical results deduced by the generalized Gauss-Laguerre quadrature rule are verified by the Monte Carlo simulation. This work is helpful for the design of receivers for FSO communication systems.