Diversity combining for differential MPSK in fading and class-A impulsive noise

In this paper, optimum (ONC) and suboptimum (SNC) noncoherent diversity combining schemes for M-ary differential phase-shift keying (MDPSK) transmission over general Rician fading channels with impulsive class-A noise are derived and analyzed. The proposed SNC scheme yields a similar performance to ONC, but requires a lower computational complexity, and achieves a large performance gain over conventional equal gain combining (EGC). We provide a performance analysis for MDPSK transmission with EGC over general Rician fading channels with class-A noise, and derive a tight lower bound on the bit error rate of ONC.