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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), pp. 1608-1616. (doi:10.1109/TWC.2010.05.081254).

Record type: Article

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.

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Published date: May 2010
Organisations: Southampton Wireless Group

Identifiers

Local EPrints ID: 271782
URI: http://eprints.soton.ac.uk/id/eprint/271782
PURE UUID: c4aadb0a-5d61-4416-a345-2d1f294dab33

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Date deposited: 13 Dec 2010 20:22
Last modified: 18 Jul 2017 06:38

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Contributors

Author: Muhammad Fasih Butt
Author: Raja Riaz
Author: Soon Ng
Author: Lajos Hanzo

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