Novel algorithms for block equalization of M-ary phase shift keying (PSK) signals transmitted over multipath fading channels in the presence of an interferent cochannel signal are introduced and analyzed. The algorithms exploit the intrinsic statistical properties of cochannel interference (CCI) in order to mitigate its effects. Both linear and decision feedback equalizers (DFE's) are derived under the assumption that the overall channel impulse responses of both the useful and the inteferent signal are known, Simulation results show that: a) whereas zero-forcing block equalizers yield a large noise enhancement effect, a minimum mean-square block DFE (MMSE-BDFE) can efficiently compensate for the distortion in the useful channel and reduce the effect of CCI at the same time and b) MMSE-BDFE's outperform conventional DFE's, at least in the idealized conditions of our analysis.

Block channel equalization in the presence of a cochannel interferent signal / A., Ginesi; Vitetta, Giorgio Matteo; D. D., Falconer. - In: IEEE JOURNAL ON SELECTED AREAS IN COMMUNICATIONS. - ISSN 0733-8716. - STAMPA. - 17:(1999), pp. 1853-1862.

Block channel equalization in the presence of a cochannel interferent signal

VITETTA, Giorgio Matteo;
1999

Abstract

Novel algorithms for block equalization of M-ary phase shift keying (PSK) signals transmitted over multipath fading channels in the presence of an interferent cochannel signal are introduced and analyzed. The algorithms exploit the intrinsic statistical properties of cochannel interference (CCI) in order to mitigate its effects. Both linear and decision feedback equalizers (DFE's) are derived under the assumption that the overall channel impulse responses of both the useful and the inteferent signal are known, Simulation results show that: a) whereas zero-forcing block equalizers yield a large noise enhancement effect, a minimum mean-square block DFE (MMSE-BDFE) can efficiently compensate for the distortion in the useful channel and reduce the effect of CCI at the same time and b) MMSE-BDFE's outperform conventional DFE's, at least in the idealized conditions of our analysis.
17
1853
1862
Block channel equalization in the presence of a cochannel interferent signal / A., Ginesi; Vitetta, Giorgio Matteo; D. D., Falconer. - In: IEEE JOURNAL ON SELECTED AREAS IN COMMUNICATIONS. - ISSN 0733-8716. - STAMPA. - 17:(1999), pp. 1853-1862.
A., Ginesi; Vitetta, Giorgio Matteo; D. D., Falconer
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11380/307452
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