NDLI: On the achievable information rates of finite-state input two-dimensional channels with memory

Content Provider	IEEE Xplore Digital Library
Author	Shental, O. Shental, N. Shamai, S.
Copyright Year	2005
Description	Author affiliation: Dept. of Electr. Eng., Tel Aviv Univ. (Shental, O.)
Abstract	The achievable information rate of finite-state input two-dimensional (2-D) channels with memory is an open problem, which is relevant, e.g., for inter-symbol-interference (ISI) channels and cellular multiple-access channels. We propose a method for simulation-based computation of such information rates. We first draw a connection between the Shannon-theoretic information rate and the statistical mechanics notion of free energy. Since the free energy of such systems is intractable, we approximate it using the cluster variation method, implemented via generalized belief propagation. The derived, fully tractable, algorithm is shown to provide a practically accurate estimate of the information rate. In our experimental study we calculate the information rates of 2-D ISI channels and of hexagonal Wyner cellular networks with binary inputs, for which formerly only bounds were known
Starting Page	2354
Ending Page	2358
File Size	175620
Page Count	5
File Format	PDF
ISBN	0780391519
DOI	10.1109/ISIT.2005.1523769
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2005-09-04
Publisher Place	Australia
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Information rates Intersymbol interference Land mobile radio cellular systems Dispersion Two dimensional displays Computational modeling Belief propagation Mutual information Physics Clustering algorithms
Content Type	Text
Resource Type	Article

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