Decision feedback sequence estimation for unwhitened ISI channels with applications to multiuser detection.

Decision feedback sequence estimation (DFSE), which is a reduced-complexity alternative to maximum likelihood sequence estimation (MLSE), can be used effectively for equalization of intersymbol interference (ISI) as well as for multiuser detection. The algorithm performs very well for whitened (mini...

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Pubblicato in:	IEEE Journal on selected areas in communications 16, 9 (1998).
Autore principale:	Hafeez, A.
Natura:	Articolo
Lingua:	English
Soggetti:	DFSE. DS-CDMA channel. GSM system. ISI equalization. MLSE. Ungerboeck formulation. Anticausal interference components. Approximate error probability bounds. Bidirectional equalization. Channel correlations. Decision feedback sequence estimation. Direct-sequence code division multiple access. Discrete-time unwhitened statistic. Error probability analysis. Global system for mobile communication. Intersymbol interference. Long spreading codes. Matched filtering. Maximum likelihood sequence estimation. Modified algorithm. Modified unwhitened decision feedback sequence estimator. Multiuser channel. Multiuser detection. Noise-whitening filter. Nonminimum-phase channels. Reduced-complexity. Time-varying channels. Unwhitened ISI channels.