Result: Joint Optimal Threshold-Based Relaying and ML Detection in Network-Coded Two-Way Relay Channels

Title:
Joint Optimal Threshold-Based Relaying and ML Detection in Network-Coded Two-Way Relay Channels
Authors:
XIANG NIAN ZENG, GHRAYEB, Ali, HASNA, Mazen
Source:
IEEE transactions on communications. 60(9):2657-2667
Publisher Information:
New York, NY: Institute of Electrical and Electronics Engineers, 2012.
Publication Year:
2012
Physical Description:
print, 26 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, Modulation, démodulation, Modulation, demodulation, 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), Réseaux téléinformatiques. Rnis, Teleprocessing networks. Isdn, Méthodes d'accès et protocoles, modèle osi, Access methods and protocols, osi model, Canal relais, Relay channel, Canal relé, Capteur mesure, Measurement sensor, Captador medida, Codage binaire, Binary coding, Codificación binaria, Commutation paquet, Packet switching, Conmutación por paquete, Dégradation, Degradation, Degradación, Endommagement, Damaging, Deterioración, Evaluation performance, Performance evaluation, Evaluación prestación, Fonction logarithmique, Logarithmic function, Función logarítmica, Liaison bidirectionnelle, Bidirectional link, Unión bidireccional, Localisation, Localization, Localización, Maximum vraisemblance, Maximum likelihood, Maxima verosimilitud, Modulation binaire déplacement phase, Binary phase shift keying, Modulación desplazamiento fase bivalente, Propagation erreur, Growth of error, Propagación error, Protocole routage, Routing protocols, Protocole transmission, Transmission protocol, Protocolo transmisión, Rapport vraisemblance, Likelihood ratio, Relación verosimilitud, Relais, Relay, Relé, Relayage, Relaying, Relés, Routage, Routing, Enrutamiento, Signalisation, Signalling, Señalización, Système 2 canaux, Two channel system, Sistema 2 canales, Système coopératif, Cooperative systems, Taux erreur bit, Bit error rate, Tasa error bit, Codage de réseau, Network coding, Système en réseau, Networked system, Cooperative networks, ML detection, decode-and-forward, error propagation, network coding, threshold-based relaying, two-way relay channel
Document Type:
Academic journal Article
File Description:
text
Language:
English
Author Affiliations:
Nokia Siemens Networks, Hangzhou, China
Department, Concordia University, Montreal, Canada, on leave at Texas A&M University, Doha, Qatar
Department, Qatar University, Doha, Qatar
ISSN:
0090-6778
Access URL:
http://pascal-francis.inist.fr/vibad/index.php?action=search&terms=26403932
Rights:
Copyright 2015 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.26403932
Database:
PASCAL Archive

Further Information

In this paper, we address the problem of joint optimal threshold-based relaying and maximum likelihood (ML) detection in network-coded cooperative systems. The purpose of using threshold-based relaying is to circumvent the impact of error propagation, which could lead to degrading the system diversity. For simplicity, we consider a simple network comprising two source nodes and one relay node. The relay operates in the decode-and-forward (DF) mode and employs binary network coding. The communication between the two source nodes is bidirectional, resulting in a two-way relay channel. We assume binary phase shift keying (BPSK) signaling. For a given log-likelihood ratio (LLR)-based threshold used at the relay, we derive the ML detector at the destination assuming that the destination has full knowledge of the locations of the blocked bits at the relay. We then derive an expression for the corresponding end-to-end (E2E) bit error rate (BER) performance, which is used to find the optimal threshold. We also derive two practical discontinuous transmission detectors at the destination for the purpose of identifying whether the relay is forwarding or not. The performance of one of the detectors is similar to that when the destination knows the locations of the blocked bits, whereas the performance of the other detector suffers some performance degradation. We present several numerical examples that illustrate the efficacy of the proposed scheme as compared to existing schemes.