Near-capacity iterative decoding of binary self-concatenated codes using soft decision demapping and 3-D EXIT charts


Butt, Muhammad Fasih, Riaz, Raja, Ng, Soon and Hanzo, Lajos (2010) Near-capacity iterative decoding of binary self-concatenated codes using soft decision demapping and 3-D EXIT charts. IEEE Transactions on Wireless Communications, 9, (5), 1608-1616. (doi:10.1109/TWC.2010.05.081254).

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Description/Abstract

In this paper 3-D Extrinsic Information Transfer (EXIT) charts are used to design binary Self-Concatenated Convolutional Codes employing Iterative Decoding (SECCC-ID), exchanging extrinsic information with the soft-decision demapper to approach the channel capacity. Recursive Systematic Convolutional (RSC) codes are selected as constituent codes, an interleaver is used for randomising the extrinsic information exchange of the constituent codes, while a puncturer helps to increase the achievable bandwidth efficiency. The convergence behaviour of the decoder is analysed with the aid of bit-based 3-D EXIT charts, for accurately calculating the operating EbN0 threshold, especially when SP based soft demapper is employed. Finally, we propose an attractive system configuration, which is capable of operating within about 1 dB from the channel capacity.

Item Type: Article
ISSNs: 1536-1276 (print)
Divisions: Faculty of Physical Sciences and Engineering > Electronics and Computer Science > Comms, Signal Processing & Control
ePrint ID: 271782
Date Deposited: 13 Dec 2010 20:22
Last Modified: 14 Apr 2014 11:34
Research Funder: EPSRC
Projects:
India-UK advanced technology centre
Funded by: EPSRC (EP/J016640/1)
Led by: Lajos Hanzo
1 January 2012 to 30 June 2014
Further Information:Google Scholar
ISI Citation Count:6
URI: http://eprints.soton.ac.uk/id/eprint/271782

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