Extrinsic Information Transfer Analysis and Design of Block-Based Intermediate Codes
Extrinsic Information Transfer Analysis and Design of Block-Based Intermediate Codes
Intermediate codes have been shown to facilitate iterative decoding convergence to the maximum likelihood error ratio performance in serially concatenated schemes. In this paper, we propose a novel block-based intermediate code as an alternative to classic convolutional intermediate codes. Since it is block-based, our intermediate code facilitates practical implementations having reduced memory and processing requirements. Furthermore, we demonstrate that it is simpler to analyse and optimise the iterative decoding process, when our block-based intermediate code is employed instead of a convolutional intermediate code. Finally, we demonstrate that the proposed block-based intermediate code facilitates significantly reduced error ratios in practical schemes, when employing short transmission frames and a limited decoding complexity.
intermediate codes, EXIT, iterative decoding, FLC, fixed length code, 16QAM, quadrature amplitude modulation, block code, repetition code, parity check code, convolutional code, coding rate, capacity, extrinsic information transfer, error ratio, SER, joint source channel coding, serial concatenation, concatenated codes, Rayleigh fading channel
762-770
Maunder, R. G.
76099323-7d58-4732-a98f-22a662ccba6c
Hanzo, L.
66e7266f-3066-4fc0-8391-e000acce71a1
March 2011
Maunder, R. G.
76099323-7d58-4732-a98f-22a662ccba6c
Hanzo, L.
66e7266f-3066-4fc0-8391-e000acce71a1
Maunder, R. G. and Hanzo, L.
(2011)
Extrinsic Information Transfer Analysis and Design of Block-Based Intermediate Codes.
IEEE Transactions on Vehicular Technology, 60 (3), .
Abstract
Intermediate codes have been shown to facilitate iterative decoding convergence to the maximum likelihood error ratio performance in serially concatenated schemes. In this paper, we propose a novel block-based intermediate code as an alternative to classic convolutional intermediate codes. Since it is block-based, our intermediate code facilitates practical implementations having reduced memory and processing requirements. Furthermore, we demonstrate that it is simpler to analyse and optimise the iterative decoding process, when our block-based intermediate code is employed instead of a convolutional intermediate code. Finally, we demonstrate that the proposed block-based intermediate code facilitates significantly reduced error ratios in practical schemes, when employing short transmission frames and a limited decoding complexity.
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Published date: March 2011
Keywords:
intermediate codes, EXIT, iterative decoding, FLC, fixed length code, 16QAM, quadrature amplitude modulation, block code, repetition code, parity check code, convolutional code, coding rate, capacity, extrinsic information transfer, error ratio, SER, joint source channel coding, serial concatenation, concatenated codes, Rayleigh fading channel
Organisations:
Southampton Wireless Group
Identifiers
Local EPrints ID: 267642
URI: https://eprints.soton.ac.uk/id/eprint/267642
ISSN: 0018-9545
PURE UUID: dca60297-07ea-4db8-8f62-59b291bdc0bf
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Date deposited: 30 Jun 2009 22:05
Last modified: 18 Jul 2017 07:01
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Author:
R. G. Maunder
Author:
L. Hanzo
University divisions
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