On the symmetric information rate of two-dimensional finite-state ISI channels

Authors:
J. Chen;P. H. Siegel
Affiliations:
Prediction Co., Santa Fe, NM, USA;-
Venue:
IEEE Transactions on Information Theory
Year:
2006

Citing 0
Cited 1

Iterative soft decision feedback zig-zag equalizer for 2D intersymbol interference channels

IEEE Journal on Selected Areas in Communications

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Abstract

We derive a pair of bounds (upper and lower) on the symmetric information rate of a two-dimensional finite-state intersymbol interference (ISI) channel model. For channels with small impulse response support, they can be estimated via a modified forward recursion of the Bahl-Cocke-Jelinek-Raviv (BCJR) algorithm. The convergence of the bounds is also analyzed. To relax the constraint on the size of the impulse response, a new upper bound is proposed which allows the tradeoff of the computational complexity and the tightness of the bound. These bounds are further extended to d-dimensional (d2) ISI channels.