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On distributed lDGM and lDPC code design for networked systems

Stefanovic, C. and Vukobratovic, D. and Stankovic, V. (2009) On distributed lDGM and lDPC code design for networked systems. In: 2009 IEEE Information Theory Workshop. ITW 2009. IEEE. IEEE, pp. 208-212. ISBN 978-1-4244-4982-8

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Abstract

We propose a novel distributed approach for the design of various classes of Low-Density Generator-Matrix (LDGM) and Low-Density Parity-Check (LDPC) codes for applications in networked systems. Distributed LDGM/LDPC codes encode a distributed network message of length k information symbols into a distributed network codeword of length n encoded symbols, with the goal of reliable network message recovery from any subset of (1 + ¿)k encoded symbols retrieved from the network. Different classes of distributed LDGM and LDPC codes are designed and compared in terms of the iterative decoding performance, upon retrieval of a fixed amount of encoded symbols.