On Reduced-Complexity Equalization Based on Ungerboeck and Forney Observation Models

Authors:
M. Loncar;F. Rusek
Affiliations:
Dept. of Electr. & Inf. Technol., Lund Univ., Lund;-
Venue:
IEEE Transactions on Signal Processing - Part I
Year:
2008

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Lower bounds on the information rate of intersymbol interference channels based on the ungerboeck observation model

ISIT'09 Proceedings of the 2009 IEEE international conference on Symposium on Information Theory - Volume 3

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Abstract

This correspondence investigates the asymptotic behavior of reduced-state intersymbol interference (ISI) equalizers, based on the Ungerboeck and Forney observation models. It is shown that Ungerboeck-based equalizers can suffer from correct-path-loss (CPL) even in the noiseless regime. ISI conditions that lead to CPL are analytically derived and illustrated by examples.