Performance evaluation of R-S coded cooperative diversity in flat fading channel: Pairwise error probability (PEP)

Cooperative communication provides transmit diversity, even when, due to size constraints, mobile units cannot accommodate multiple antennas. A versatile cooperation method called coded cooperation has been developed, in which cooperation is implemented through channel coding. In this work the performance of coded cooperation in flat Rayleigh fading environment using a concept known as the pairwise error probability (PEP) is evaluated. PEP is a concept which describes the probability of the receiver selecting an error instead of original data at the destination. Though previous researches in this area have been able to develop PEP, however, in this work, we derive the PEP for the various cases in coded cooperation and then compare with the signal-to-noise ratios of the users in the network. Results show that an increase in the SNR leads to a decrease in the PEP.