TY - JOUR

T1 - An efficient joint source-channel decoder with dynamical block priors

AU - Kanter, Ido

AU - Kfir, Haggai

AU - Keren, Shahar

PY - 2005

Y1 - 2005

N2 - An efficient joint source-channel (s/c) decoder based on the side information of the source and on the MN-Gallager algorithm over Galois fields is presented. The dynamical block priors (DBP) are derived either from a statistical mechanical approach via calculation of the entropy for the correlated sequences, or from the Markovian transition matrix. The Markovian joint s/c decoder has many advantages over the statistical mechanical approach. In particular, there is no need for the construction and the diagonalization of a q × q matrix and for a solution to saddle point equations in q dimensions. Using parametric estimation, an efficient joint s/c decoder with the lack of side information is discussed. Besides the variant joint s/c decoders presented, we also show that the available sets of autocorrelations consist of a convex volume, and its structure can be found using the Simplex algorithm.

AB - An efficient joint source-channel (s/c) decoder based on the side information of the source and on the MN-Gallager algorithm over Galois fields is presented. The dynamical block priors (DBP) are derived either from a statistical mechanical approach via calculation of the entropy for the correlated sequences, or from the Markovian transition matrix. The Markovian joint s/c decoder has many advantages over the statistical mechanical approach. In particular, there is no need for the construction and the diagonalization of a q × q matrix and for a solution to saddle point equations in q dimensions. Using parametric estimation, an efficient joint s/c decoder with the lack of side information is discussed. Besides the variant joint s/c decoders presented, we also show that the available sets of autocorrelations consist of a convex volume, and its structure can be found using the Simplex algorithm.

UR - http://www.scopus.com/inward/record.url?scp=22144431579&partnerID=8YFLogxK

U2 - 10.1143/PTPS.157.184

DO - 10.1143/PTPS.157.184

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AN - SCOPUS:22144431579

SN - 0375-9687

VL - 157

SP - 184

EP - 196

JO - Progress of Theoretical Physics Supplement

JF - Progress of Theoretical Physics Supplement

ER -