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Sparse graph codes and practical decoding algorithms for communicating over packet timings in networks

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2 Author(s)
Coleman, T.P. ; Dept. of ECE, Univ. of Illinois at Urbana-Champaign, Urbana, IL ; Kiyavash, N.

This paper examines more closely the probabilistic dynamics of queueing channels and discusses a new practical coding scheme which is tailored to such channels and approaches the capacity. We discuss a shaping technique to map algebraic symbols to non-uniform codewords using the inverse cumulative distribution of a target random variable. We also exploit the graphical structure of the conditional distribution of the departure process given the arrival process of a queue to develop capacity approaching codes with low-complexity decoding algorithms.

Published in:

Information Sciences and Systems, 2008. CISS 2008. 42nd Annual Conference on

Date of Conference:

19-21 March 2008