Result: Turbo detection of space-time trellis-coded constant bit rate vector-quantised videophone system using reversible variable-length codes, convolutional codes and turbo codes

Title:
Turbo detection of space-time trellis-coded constant bit rate vector-quantised videophone system using reversible variable-length codes, convolutional codes and turbo codes
Authors:
YEAP, B. L, MAUNDER, R. G, NG, S. X, HANZO, L
Source:
VTC 2004 Fall (proceedings). :1358-1362
Publisher Information:
Piscataway, New Jersey: IEEE, 2004.
Publication Year:
2004
Physical Description:
print, 11 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, Signal, bruit, Signal, noise, Détection, estimation, filtrage, égalisation, prédiction, Detection, estimation, filtering, equalization, prediction, Codage, codes, Coding, codes, 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), Canal Rayleigh, Rayleigh channels, Canal dispersif, Dispersive channel, Canal dispersivo, Canal évanouissement, Fading channels, Code Turbo, Turbo code, Código Turbo, Code convolutif, Convolutional code, Código convolutivo, Code espace temps, Space-time codes, Code longueur variable, Variable length code, Código longitud variable, Codec, Complexité algorithme, Algorithm complexity, Complejidad algoritmo, Conception système, System design, Concepción sistema, Correction erreur, Error correction, Corrección error, Débit binaire constant, Constant bit rate, Velocidad de bit constante, Estimation a posteriori, A posteriori estimation, Estimación a posteriori, Evaluation performance, Performance evaluation, Evaluación prestación, Méthode itérative, Iterative method, Método iterativo, Qualité image, Image quality, Calidad imagen, Rapport signal bruit, Signal to noise ratio, Relación señal ruido, Signal vidéo, Video signal, Señal video, Taux transmission, Transmission rate, Relación transmisión, Transmission information, Information transmission, Transmisión información, Visiophone, Videophone, Videoteléfono
Document Type:
Conference Conference Paper
File Description:
text
Language:
English
Author Affiliations:
School of ECS, University of Southampton, SO17 1BJ, United Kingdom
Access URL:
http://pascal-francis.inist.fr/vibad/index.php?action=search&terms=18183596
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.18183596
Database:
PASCAL Archive

Further Information

In this treatise we characterise the achievable performance of a proprietary video transmission system, which employs a Constant Bit Rate (CBR) video codec that is concatenated with one of of three error correction codecs, namely a Reversible Variable-Length Code (RVLC), a Convolutional Code (CC) or a convolutional-based Turbo Code (TC). In our investigations, the CBR video codec was invoked in conjunction with Space-Time Trellis Coding (STTC) designed for transmission over a dispersive Rayleigh fading channel. At the receiver, the channel equaliser, the STTC decoder and the RVLC, CC or TC decoder, as appropriate, employ the Max-Log Maximum A-Posteriori (MAP) algorithm and their operations are performed in an iterative 'turbo-detection' fashion. The systems were designed for maintaining similar error-free video reconstruction qualities, which were found to be subjectively pleasing at a Peak Signal to Noise Ratio (PSNR) of 30.6 dB, at a similar decoding complexity per decoding iteration. These design criteria were achieved by employing differing transmission rates, with the CC- and TC-based systems having a 22% higher bandwidth requirement. The results demonstrated that the TC-, RVLC- and CC-based systems achieve acceptable subjective reconstructed video quality associated with an average PSNR in excess of 30 dB for Eb/N0 values above 4.6 dB, 6.4 dB and 7.7 dB, respectively. The design choice between the TC- and RVLC-based systems constitutes a trade-off between the increased error resilience of the TC-based scheme and the reduced bandwidth requirement of the RVLC-based scheme.