Selective DF Based Multiple Relayed Cooperative System with M-QAM Signalling

摘要

In this paper, we analyze the error rate performance of selective decode-and-forward (DF) based multiple relayed cooperative system for M-QAM (Quadrature Amplitude Modulation) signalling. The analysis is performed for selective DF based cooperative relaying with single as well as multiple relayed system. In particular, an alternate representation of Q-function is used to derive the closed-form expression of asymptotic symbol error rate probability (ASEP) over Rayleigh faded channels with high SNR approximation. Further, the analytical results are corroborated by Monte Carlo simulations for M-QAM MRC cooperative system.