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Exploitation of 2D binary source correlation using turbo block codes with fine-tuning

Mohd. Izhar, Mohd. Azri and Azri, Mohd. Saiful and Fisal, Norsheila and Zhou, Xiaobo and Anwar, Khoirul and Matsumoto, Tad (2013) Exploitation of 2D binary source correlation using turbo block codes with fine-tuning. Eurasip Journal On Wireless Communications and Networking, 2013 (1). ISSN 1687-1472

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Official URL: http://dx.doi.org/10.1186/1687-1499-2013-89

Abstract

This article proposes a joint source-channel coding technique for two-dimensional (2D) binary Markov sources by using concatenated turbo block codes composed of two Bose, Chaudhuri, Hocquenghem (BCH) codes, of which output is followed by a rate-1 recursive systematic convolutional code. The source correlation of all rows and columns of the 2D source is well exploited by using a modified Bahl-Cocke-Jelinek-Raviv (BCJR) algorithm for the decoding of the BCH codes. Simulation results show that the proposed technique outperforms in terms of bit error rate the codes that exploits one-dimensional (1D) source correlation using the modified BCJR algorithm, and obviously the conventional system without source correlation exploitation. In order to further improve the performance, this article aims to make fine-tuning of the code parameters, given the source correlation property, that can achieve performance even closer to the theoretical limit than without the fine-tuning. Finally, results of image transmission simulations using two images, one having strong and the other weak 2D correlation, are presented to demonstrate the effectiveness of our proposed technique

Item Type:Article
Uncontrolled Keywords:source correlation, theoretical limits, transmission simulations
Subjects:T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions:Electrical Engineering
ID Code:49571
Deposited By: Siti Nor Hashidah Zakaria
Deposited On:02 Dec 2015 02:09
Last Modified:14 Oct 2018 08:22

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