Krusevac, Zarko B., Rapajic, Predrag and Kennedy, Rodney A. (2008) Mutual information performance of differential MPSK detection over time-varying channels. Proceedings - 2008 IEEE International Symposium on Information Theory, ISIT 2008. Institute of Electrical and Electronics Engineers, Inc., Piscataway, NJ, USA, pp. 2752-2756. ISBN 9781424422562

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Abstract

This paper provides mutual information performance analysis of multiple-symbol differential WSK (M-phase shift keying) over time-correlated, time-varying flat-fading communication channels. A state space approach is used to model time correlation of time varying channel phase. This approach captures the dynamics of time correlated, time-varying channels and enables exploitation of the forward-backward algorithm for mutual information performance analysis. It is shown that the differential decoding implicitly uses a sequence of innovations of the channel process time correlation and this sequence is essentially uncorrelated. It enables utilization of multiple-symbol differential detection, as a form of block-by-block maximum likelihood sequence detection for capacity achieving mutual information performance. It is shown that multiple-symbol differential ML detection of BPSK and QPSK practically achieves the channel information capacity with observation times only on the order of a few symbol intervals

Item Type:	Book Section
Additional Information:	This paper forms part of the proceedings of 2008 IEEE International Symposium on Information Theory, ISIT 2008, held 6-11 July 2008, Toronto, ON, Canada.
Uncontrolled Keywords:	channel information capacity, communication channels, differential decoding, flat-fading, forward-backward algorithm, maximum-likelihood sequence detection, ML detections, multiple-symbol differential detection, mutual information, performance analyses, process time, state-space approach, symbol intervals, time correlations, time-varying, time-varying channels
Subjects:	T Technology > T Technology (General) T Technology > TK Electrical engineering. Electronics Nuclear engineering
Pre-2014 Departments:	School of Engineering School of Engineering > Department of Computer & Communications Engineering
Related URLs:	Publisher Organisation
Last Modified:	27 Jan 2020 16:05
URI:	http://gala.gre.ac.uk/id/eprint/2665

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