Title :
Performance of BICM-Based QAM-SIM OWC Over Gamma-Gamma Turbulence Channels
Author :
Malik, Muhammad Talha ; Hossain, Md Jahangir ; Julian Cheng ; Alouini, Mohamed-Slim
Author_Institution :
Sch. of Eng., Univ. of British Columbia, Kelowna, BC, Canada
Abstract :
We derive a series expression for the pair-wise error probability (PEP) of bit interleaved coded modulation (BICM)-based subcarrier intensity modulation (SIM) optical wireless communication (OWC) system employing M2 -ary quadrature amplitude modulation ( M2-QAM) over the Gamma-Gamma turbulence channels. Using this expression, we develop an upper bound (UB) to predict the bit-error rate performance of such system. Simulation results are presented to verify the analytical results. We also develop an asymptotic UB which reveals that the diversity order depends on the smaller channel parameter and the free distance of the convolutional code.
Keywords :
channel coding; convolutional codes; error statistics; intensity modulation; interleaved codes; modulation coding; optical communication; optical modulation; quadrature amplitude modulation; wireless channels; BICM-based QAM-SIM OWC performance; M2-QAM; M2-ary quadrature amplitude modulation; PEP; asymptotic UB; asymptotic upper bound; bit error rate performance; bit interleaved coded modulation; convolutional code free distance; gamma-gamma turbulence channel; optical wireless communication system; pair-wise error probability; subcarrier intensity modulation; Bit error rate; Convolutional codes; Optical fiber communication; Photodetectors; Quadrature amplitude modulation; Signal to noise ratio; Atmospheric turbulence; Gamma-Gamma channel; bit-interleaved coded modulation; optical wireless communication;
Journal_Title :
Communications Letters, IEEE
DOI :
10.1109/LCOMM.2015.2405554
