MLSE FOR AN UNKNOWN CHANNEL .2. TRACKING PERFORMANCE

The channel-tracking mode performance of the front-end (FE) processors which were developed in a companion paper [1] is determined through a pproximate analysis and computer simulation, A general model for the F E processing, which encompasses these representative FE's, is assumed, Previous analysis techniques are extended to include the effects of F E processing. The specific system analyzed consists of a Rayleigh-fadi ng, diffuse multipath channel with several data pulse shapes considere d, An adaptive maximum likelihood sequence estimation (MLSE) algorithm based on the per-survivor processing (PSP) technique is analyzed and compared to an algorithm based on correct symbol feedback. The results show that significant performance degradation is suffered when subopt imal FE processing is used, The limitations of the results and the mod els used are discussed.