Performance analysis of dual-diversity receivers over correlated generalised Gamma fading channels

Abstract

The performance of dual-branch equal-gain combining (EGC) and maximal-ratio combining receivers operating over a composite correlated fading environment, modelled by the generalised Gamma (GG) distribution, is analysed. The moments of the output signal-to-noise ratio are derived in closed form for both types of receivers, and by employing the Padé approximants method, the average bit error probability is studied for a great variety of modulation schemes. Furthermore, based on the statistic of the product of two correlated GG random variables, a tight union upper bound for the outage probability of the EGC is obtained, whereas for the special case of Weibull fading a simpler bound is derived in closed form. The proposed mathematical analysis is complemented by various, numericaly evaluated performance results, whereas simulations verify the correctness of the proposed analysis. Channel modelLet us consider a dual-branch diversity receiver operating in a correlated fading environment modelled by the bivariate #

GPU-supported simulation for ABEP and QoS analysis of a combined macro diversity system in a gamma-shadowed k-μ fading channel

“…In a homogeneous channel short-term fading is successfully described by Rayleigh, Nakagami-m, Rice or Hoyt distributions. In a real system, the surfaces are spatially correlated, so the channel is non-homogeneous [3]. Distributions that model non-homogeneous fading channels are generalized n-distribution and generalized q-distribution.…”

A Closed-Form Approximation to the Distribution for the Sum of Independent Non-identically Generalized Gamma Variates and Applications

“…Various works on the performance of diversity receivers over uncorrelated GG fading channels have been investigated [16][17][18][19][20][21][22][23][24]. Essentially, Aalo et al [16] have presented the performance of M-ary modulation schemes for MRC, EGC, and SC, whereas in ref.…”

“…The moments of the output SNR at MRC and EGC receivers, under i.n.i.d fading channels, are derived in ref. [19]. Average bit error rate (ABER) expressions for binary digital modulation schemes experiencing GG fading model were investigated by Aalo et al [20].…”