Novel noncoherent detectors for multi-branch multi-hop AF relaying

摘要

Different new noncoherent detectors based on the logistic assumptions are proposed for multi-branch multi-hop amplify-and-forward (AF) relaying. Numerical results show that the improved energy detector with arbitrary power operation can achieve better bit error rate (BER) performance as the logistic detector based on the logistic assumption, and a larger number of hops requires a larger number of branches to achieve the same BER performance. Numerical results also show that when the SNR is large, the new detector based on the logistic approximation has better performances than the improved energy detector.