Special Section on Free-Space Laser Communication

Average symbol error rate for M-ary quadrature amplitude modulation in generalized atmospheric turbulence and misalignment errors

[+] Author Affiliations
Prabhat Kumar Sharma

Visvesvaraya National Institute of Technology, Department of Electronics and Communication Engineering, South Ambazari Road, Maharastra, Nagpur 440010, India

Opt. Eng. 55(11), 111615 (Oct 25, 2016). doi:10.1117/1.OE.55.11.111615
History: Received June 8, 2016; Accepted October 4, 2016
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Abstract.  A framework is presented for the analysis of average symbol error rate (SER) for M-ary quadrature amplitude modulation in a free-space optical communication system. The standard probability density function (PDF)-based approach is extended to evaluate the average SER by representing the Q-function through its Meijer’s G-function equivalent. Specifically, a converging power series expression for the average SER is derived considering the zero-boresight misalignment errors in the receiver side. The analysis presented here assumes a unified expression for the PDF of channel coefficient which incorporates the M-distributed atmospheric turbulence and Rayleigh-distributed radial displacement for the misalignment errors. The analytical results are compared with the results obtained using Q-function approximation. Further, the presented results are supported by the Monte Carlo simulations.

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© 2016 Society of Photo-Optical Instrumentation Engineers

Citation

Prabhat Kumar Sharma
"Average symbol error rate for M-ary quadrature amplitude modulation in generalized atmospheric turbulence and misalignment errors", Opt. Eng. 55(11), 111615 (Oct 25, 2016). ; http://dx.doi.org/10.1117/1.OE.55.11.111615


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