• Turbo decoding with nonuniform...

Treffer: Turbo decoding with nonuniform quantization

Title:
Turbo decoding with nonuniform quantization
Authors:
GHASSEMI, A, GULLIVER, T. A
Source:
VTC 2004 Fall (proceedings). :2273-2277
Publisher Information:
Piscataway, New Jersey: IEEE, 2004.
Publication Year:
2004
Physical Description:
print, 10 ref
Original Material:
INIST-CNRS
Subject Terms:
Telecommunications, Télécommunications, Sciences exactes et technologie, Exact sciences and technology, Sciences appliquees, Applied sciences, Telecommunications et theorie de l'information, Telecommunications and information theory, Théorie de l'information, du signal et des communications, Information, signal and communications theory, Théorie du signal et des communications, Signal and communications theory, Codage, codes, Coding, codes, Echantillonnage, quantification, Sampling, quantization, Télécommunications, Telecommunications, Systèmes, réseaux et services de télécommunications, Systems, networks and services of telecommunications, Transmission et modulation (techniques et équipements), Transmission and modulation (techniques and equipments), Bruit blanc gaussien additif, AWGN, Bruit quantification, Quantization noise, Ruido cuantificación, Canal Rayleigh, Rayleigh channels, Canal bruit blanc gaussien additif, AWGN channels, Canal évanouissement, Fading channels, Code Turbo, Turbo code, Código Turbo, Complexité algorithme, Algorithm complexity, Complejidad algoritmo, Décodage, Decoding, Desciframiento, Dégradation, Degradation, Degradación, Evaluation performance, Performance evaluation, Evaluación prestación, Quantificateur, Quantifier, Cuantificador, Quantification signal, Signal quantization, Cuantificación señal, Taux erreur bit, Bit error rate, Tasa error bit, Virgule fixe, Fixed point, Coma fija, Virgule flottante, Floating point, Coma flotante
Document Type:
Konferenz Conference Paper
File Description:
text
Language:
English
Author Affiliations:
Department of Electrical and Computer Engineering University of Victoria P.O. Box 3055, STN CSC, Victoria, BC V8W 3P6, Canada
Access URL:
http://pascal-francis.inist.fr/vibad/index.php?action=search&terms=18183784
Rights:
Copyright 2006 INIST-CNRS
CC BY 4.0
Sauf mention contraire ci-dessus, le contenu de cette notice bibliographique peut être utilisé dans le cadre d’une licence CC BY 4.0 Inist-CNRS / Unless otherwise stated above, the content of this bibliographic record may be used under a CC BY 4.0 licence by Inist-CNRS / A menos que se haya señalado antes, el contenido de este registro bibliográfico puede ser utilizado al amparo de una licencia CC BY 4.0 Inist-CNRS
Notes:
Telecommunications and information theory
Accession Number:
edscal.18183784
Database:
PASCAL Archive

Weitere Informationen

The performance of fixed point turbo decoders is usually evaluated assuming a uniform quantizer and an additive white Gaussian noise (AWGN) channel. However, if a uniform quantizer is employed in a fading channel, significant quantization noise can occur, resulting in a degradation in bit error rate (BER) performance. In this paper, we propose turbo decoding with a nonuniform quantizer. In a Rayleigh flat fading channel, it is shown that with a 6-bit nonuniform quantizer, fixed point turbo decoding performance is approximately equal to floating point performance. It is also shown that a 3-bit nonuniform quantizer is as effective as a 4-bit uniform quantizer. In addition, we determine that a low complexity turbo decoding algorithm with a nonuniform quantizer performs the same as a higher complexity algorithm with a uniform quantizer.