Improvement on turbo code decoder by updating redundant likelihood information

Masayuki Ariyoshi; Iwao Sasase

Improvement on turbo code decoder by updating redundant likelihood information

Masayuki Ariyoshi, Iwao Sasase

Department of Information and Computer Science

Research output: Contribution to journal › Conference article › peer-review

Abstract

This paper presents a novel decoding algorithm for turbo codes, in which the likelihood values for redundant parts are updated in order for those values to become more reliable. A criterion for updating the redundant likelihood values is proposed, which is based on the comparisons of the channel values with the re-generated values by the soft-input and soft-output encoders. It is shown that the proposed method can improve the error correcting capabilities, i.e., the improvement of BER/ BLER performance and the achievable BER limit.

Original language	English
Pages (from-to)	1014-1018
Number of pages	5
Journal	IEEE Vehicular Technology Conference
Volume	59
Issue number	2
Publication status	Published - 2004 Dec 1
Event	2004 IEEE 59th Vehicular Technology Conference, VTC2004-Spring: Towards a Global Wireless World - Milan, Italy Duration: 2004 May 17 → 2004 May 19

Keywords

Iterative decoding
Redundant likelihood update
SISO encoder
Soft-input RSC
Turbo code

ASJC Scopus subject areas

Computer Science Applications
Electrical and Electronic Engineering
Applied Mathematics

Cite this

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title = "Improvement on turbo code decoder by updating redundant likelihood information",

abstract = "This paper presents a novel decoding algorithm for turbo codes, in which the likelihood values for redundant parts are updated in order for those values to become more reliable. A criterion for updating the redundant likelihood values is proposed, which is based on the comparisons of the channel values with the re-generated values by the soft-input and soft-output encoders. It is shown that the proposed method can improve the error correcting capabilities, i.e., the improvement of BER/ BLER performance and the achievable BER limit.",

keywords = "Iterative decoding, Redundant likelihood update, SISO encoder, Soft-input RSC, Turbo code",

author = "Masayuki Ariyoshi and Iwao Sasase",

year = "2004",

month = dec,

day = "1",

language = "English",

volume = "59",

pages = "1014--1018",

journal = "IEEE Vehicular Technology Conference",

issn = "1550-2252",

publisher = "Institute of Electrical and Electronics Engineers Inc.",

number = "2",

note = "2004 IEEE 59th Vehicular Technology Conference, VTC2004-Spring: Towards a Global Wireless World ; Conference date: 17-05-2004 Through 19-05-2004",

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TY - JOUR

T1 - Improvement on turbo code decoder by updating redundant likelihood information

AU - Ariyoshi, Masayuki

AU - Sasase, Iwao

PY - 2004/12/1

Y1 - 2004/12/1

N2 - This paper presents a novel decoding algorithm for turbo codes, in which the likelihood values for redundant parts are updated in order for those values to become more reliable. A criterion for updating the redundant likelihood values is proposed, which is based on the comparisons of the channel values with the re-generated values by the soft-input and soft-output encoders. It is shown that the proposed method can improve the error correcting capabilities, i.e., the improvement of BER/ BLER performance and the achievable BER limit.

AB - This paper presents a novel decoding algorithm for turbo codes, in which the likelihood values for redundant parts are updated in order for those values to become more reliable. A criterion for updating the redundant likelihood values is proposed, which is based on the comparisons of the channel values with the re-generated values by the soft-input and soft-output encoders. It is shown that the proposed method can improve the error correcting capabilities, i.e., the improvement of BER/ BLER performance and the achievable BER limit.

KW - Iterative decoding

KW - Redundant likelihood update

KW - SISO encoder

KW - Soft-input RSC

KW - Turbo code

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M3 - Conference article

AN - SCOPUS:15544370844

SN - 1550-2252

VL - 59

SP - 1014

EP - 1018

JO - IEEE Vehicular Technology Conference

JF - IEEE Vehicular Technology Conference

IS - 2

T2 - 2004 IEEE 59th Vehicular Technology Conference, VTC2004-Spring: Towards a Global Wireless World

Y2 - 17 May 2004 through 19 May 2004

ER -

Improvement on turbo code decoder by updating redundant likelihood information

Abstract

Keywords

ASJC Scopus subject areas

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