Ergodic capacity and error performance of spatial diversity UWOC systems over generalized gamma turbulence channels
نویسندگان
چکیده
In this paper, we study the ergodic capacity (EC) and average bit error rate (BER) of spatial diversity underwater wireless optical communications (UWOC) over generalized gamma (GG) fading channels using quadrature amplitude modulation (QAM) direct current-biased orthogonal frequency division multiplexing (DCO-OFDM). We derive closed-form expressions EC BER for UWOC with equal gain combining (EGC) at receivers based on approximation sum independent identical distributed (i.i.d) GG random variables (RVs). Numerical results QAM DCO-OFDM systems are presented. The numerical shown to be closely matched by Monte Carlo simulations, verifying analysis. clearly shows adverse effect turbulence & advantage EGC overcome effect.
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ژورنال
عنوان ژورنال: Optics Communications
سال: 2022
ISSN: ['1873-0310', '0030-4018']
DOI: https://doi.org/10.1016/j.optcom.2021.127476