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TWC
2010

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

12 years 10 months ago
Near-capacity iterative decoding of binary self-concatenated codes using soft decision demapping and 3-D EXIT charts
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 /0 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.
Muhammad Fasih Uddin Butt, Raja Ali Riaz, Soon Xin
Added 23 May 2011
Updated 23 May 2011
Type Journal
Year 2010
Where TWC
Authors Muhammad Fasih Uddin Butt, Raja Ali Riaz, Soon Xin Ng, Lajos Hanzo
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