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Iterative channel equalization, channel decoding and source decoding

Iterative channel equalization, channel decoding and source decoding
Iterative channel equalization, channel decoding and source decoding
The performance of soft source decoding is evaluated over dispersive AWGN channels. By employing source codes having error-correcting capabilities, such as Reversible Variable-Length Codes (RVLCs) and Variable-Length Error-Correcting (VLEC) codes, the softin/soft-out (SISO) source decoder benefits from exchanging information with the MAP equalizer, and effectively eliminates the inter-symbol interference (ISI) after a few iterations. It was also found that the soft source decoder is capable of significantly improving the attainable performance of the turbo receiver provided that channel equalization, channel decoding and source decoding are carried out jointly and iteratively. At SER = 10-4, the performance of this three-component turbo receiver is about 2 dB better in comparison to the benchmark scheme carrying out channel equalization and channel decoding jointly, but source decoding separately. At this SER value, the performance of the proposed scheme is about 1 dB worse than that of the ½-rate convolutional coded non-dispersive AWGN channel.
1550-2252
518-522
IEEE
Wang, J.
53d8d8bd-3c17-406e-9acf-961cc86b9a00
Yang, L-L.
ae425648-d9a3-4b7d-8abd-b3cfea375bc7
Hanzo, L.
66e7266f-3066-4fc0-8391-e000acce71a1
Wang, J.
53d8d8bd-3c17-406e-9acf-961cc86b9a00
Yang, L-L.
ae425648-d9a3-4b7d-8abd-b3cfea375bc7
Hanzo, L.
66e7266f-3066-4fc0-8391-e000acce71a1

Wang, J., Yang, L-L. and Hanzo, L. (2005) Iterative channel equalization, channel decoding and source decoding. In 2005 IEEE 61st Vehicular Technology Conference. IEEE. pp. 518-522 . (doi:10.1109/VETECS.2005.1543345).

Record type: Conference or Workshop Item (Paper)

Abstract

The performance of soft source decoding is evaluated over dispersive AWGN channels. By employing source codes having error-correcting capabilities, such as Reversible Variable-Length Codes (RVLCs) and Variable-Length Error-Correcting (VLEC) codes, the softin/soft-out (SISO) source decoder benefits from exchanging information with the MAP equalizer, and effectively eliminates the inter-symbol interference (ISI) after a few iterations. It was also found that the soft source decoder is capable of significantly improving the attainable performance of the turbo receiver provided that channel equalization, channel decoding and source decoding are carried out jointly and iteratively. At SER = 10-4, the performance of this three-component turbo receiver is about 2 dB better in comparison to the benchmark scheme carrying out channel equalization and channel decoding jointly, but source decoding separately. At this SER value, the performance of the proposed scheme is about 1 dB worse than that of the ½-rate convolutional coded non-dispersive AWGN channel.

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More information

Published date: 2005
Venue - Dates: 2005 IEEE 61st Vehicular Technology Conference, Stockholm, Sweden, 2005-05-30 - 2005-06-01
Organisations: Southampton Wireless Group

Identifiers

Local EPrints ID: 261663
URI: https://eprints.soton.ac.uk/id/eprint/261663
ISSN: 1550-2252
PURE UUID: 754cf1d0-51f5-4a87-859d-04f43d8d742f
ORCID for L-L. Yang: ORCID iD orcid.org/0000-0002-2032-9327
ORCID for L. Hanzo: ORCID iD orcid.org/0000-0002-2636-5214

Catalogue record

Date deposited: 14 Dec 2005
Last modified: 03 Apr 2019 00:38

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