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Please use this identifier to cite or link to this item: http://hdl.handle.net/10119/12315

Title: Joint Distributed Source-Channel Decoding for LDPC-Coded Binary Markov Sources
Authors: Asvadi, Reza
Matsumoto, Tad
Juntti, Markku
Issue Date: 2013-09
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Magazine name: 2013 IEEE 24th International Symposium on Personal Indoor and Mobile Radio Communications (PIMRC)
Start page: 807
End page: 811
DOI: 10.1109/PIMRC.2013.6666247
Abstract: We propose a novel joint decoding technique for distributed source-channel (DSC) coded systems for transmission of correlated binary Markov sources over additive white Gaussian noise (AWGN) channels. In the proposed scheme, relatively short-length, low-density parity-check (LDPC) codes are independently used to encode the bit sequences of each source. To reconstruct the original bit sequence, a joint source-channel decoding (JSCD) technique is proposed which exploits the knowledge of both temporal and source correlations. The JSCD technique is composed of two stages, which are iteratively performed. First, a sum-product (SP) decoder is serially concatenated with a BCJR decoder, where the knowledge of source memory is utilized during local (horizontal) iterations. Then, the estimate of correlation between the sources is used to update the concatenated decoder during global (vertical) iterations. Therefore, the correlation of the sources is assumed as side information in the subsequent global iteration of each concatenated decoder. From the simulation results of frame/bit error rate (FER/BER), we note that significant gains are achieved by the proposed decoding scheme with respect to the case where the correlation knowledge is not completely utilized at the decoder.
Rights: This is the author's version of the work. Copyright (C) 2013 IEEE. 2013 IEEE 24th International Symposium on Personal Indoor and Mobile Radio Communications (PIMRC), 2013, 807-811. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.
URI: http://hdl.handle.net/10119/12315
Material Type: author
Appears in Collections:b11-1. 会議発表論文・発表資料 (Conference Papers)

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