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Efficient Computation of EXIT Functions for Nonbinary Iterative Decoding

Efficient Computation of EXIT Functions for Nonbinary Iterative Decoding
Efficient Computation of EXIT Functions for Nonbinary Iterative Decoding
The calculation of nonbinary extrinsic information transfer charts for the iterative decoding of concatenated index-based codes is addressed. We show that the extrinsic information at the output of a constituent a posteriori probability decoder can be calculated with very low complexity, where expensive histogram measurements are not required anymore. An example for turbo trellis-coded modulation demonstrates the capabilities of the proposed approach.
Terms—Extrinsic information transfer (EXIT) charts, nonbinary iterative decoding, turbo trellis-coded modulation (TTCM)
2133-2136
Kliewer, Jorg
485a5422-6ba4-40c2-b2b4-32da27801ddc
Ng, S.X
e19a63b0-0f12-4591-ab5f-554820d5f78c
Hanzo, L
66e7266f-3066-4fc0-8391-e000acce71a1
Kliewer, Jorg
485a5422-6ba4-40c2-b2b4-32da27801ddc
Ng, S.X
e19a63b0-0f12-4591-ab5f-554820d5f78c
Hanzo, L
66e7266f-3066-4fc0-8391-e000acce71a1

Kliewer, Jorg, Ng, S.X and Hanzo, L (2006) Efficient Computation of EXIT Functions for Nonbinary Iterative Decoding. IEEE Transactions on Communications, 54 (12), 2133-2136.

Record type: Article

Abstract

The calculation of nonbinary extrinsic information transfer charts for the iterative decoding of concatenated index-based codes is addressed. We show that the extrinsic information at the output of a constituent a posteriori probability decoder can be calculated with very low complexity, where expensive histogram measurements are not required anymore. An example for turbo trellis-coded modulation demonstrates the capabilities of the proposed approach.

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Published date: December 2006
Keywords: Terms—Extrinsic information transfer (EXIT) charts, nonbinary iterative decoding, turbo trellis-coded modulation (TTCM)
Organisations: Southampton Wireless Group
Learn more about Southampton Wireless Group research

Identifiers

Local EPrints ID: 263288
URI: http://eprints.soton.ac.uk/id/eprint/263288
PURE UUID: 1b61fe59-c74f-4185-89cd-30c116f52d05
ORCID for S.X Ng: ORCID iD orcid.org/0000-0002-0930-7194
ORCID for L Hanzo: ORCID iD orcid.org/0000-0002-2636-5214

Catalogue record

Date deposited: 05 Jan 2007
Last modified: 18 Mar 2024 02:48

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Contributors

Author: Jorg Kliewer
Author: S.X Ng ORCID iD
Author: L Hanzo ORCID iD

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