BER of equal gain combiner over composite and non-homogenous channels with co-channel interference and phase estimation error

Bit error rate(BER) analysis of an L antenna equal gain combiner (EGC) in correlated composite fading channels and in independent and identically distributed (i.i.d) non-homogenous fading channels is evaluated in the presence of co-channel interference(CCI) and imperfect estimation of carrier phase. The n_th moment of the combiner output signal to interference plus noise ratio(SINR) is derived individually for correlated composite fading channels and i.i.d non-homogenous fading channels. The BER for binary phase shift keying(BPSK) modulation is derived using moment generating function(MGF) and applying Pade approximation technique. Numerical and simulation results for different degrees of phase errors and different values of ρ are obtained. The results are also plotted for different CCI parameters. The results for special cases were checked with the available results.