Metric for noncoherent sequence estimation

TitleMetric for noncoherent sequence estimation
Publication TypeJournal Article
Year of Publication1999
AuthorsSchober, R., and W. H. Gerstacker
JournalElectronics Letters
Pagination2178 -2179
Date Publisheddec.
KeywordsBER, bit error rate, communication complexity, differential phase shift keying, digital communication, error statistics, estimation theory, intersymbol interference, intersymbol interference channels, ISI channels, low complexity, M-ary differential PSK transmission, metric calculation, noncoherent sequence estimation metric, phase reference symbol, phase-shift keying transmission, sequences, telecommunication channels

A novel simple noncoherent sequence estimation (NSE) metric for M-ary differential phase-shift keying (MDPSK) transmission over intersymbol interference (ISI) channels is proposed. In contrast to previously reported NSE schemes, the phase reference symbol required for metric calculation can be obtained efficiently in a recursive manner. Simulations demonstrate the high performance of the novel scheme, which can approach the performance of coherent maximum-likelihood sequence estimation (MLSE) while the complexity of metric computation remains relatively low


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