A comparison of GSM receivers for fading multipath channels withadjacent and co-channel interference

摘要

We evaluate and compare several data detection schemes used in GSMnsystems. In particular, we compare the performance of decision feedbacknequalization (DFE) and nonlinear data directed estimation (NDDE) to thatnof maximum likelihood sequence estimation (MLSE). Establishing thenperformance of the basic NDDE detector is a first step in investigatingnthe applicability of block transmission techniques to GSM systems. Ournsimulation results, obtained both for fading multipath channels andnadjacent- and co-channel interference scenarios, suggest that the NDDEnoffers certain performance advantages over the DFE, and the performancenof both detectors is comparable to that of the MLSE for the SNR regionnof interest in practical systems. Thus, they both represent viablenalternatives to the MLSE detector