An efficient suboptimum detector based on linear prediction in Rayleigh flat-fading channels

摘要

It is well known that the optimum detector based on linear prediction, for frequency-nonselective (flat) fading channels, requires M states for M-ary signalling, where is the order of the prediction filter required to decorrelate the received signal. In this paper , we first derive a suboptimal linear predictive-based (SLP) detector for M-ary PSK by making a high SNR assumption. We then demonstrate using the concept of isometry that for M-ary PSK signalling, only M~-1 states Are required for this SLP detector.