Optimal power allocation in a relay-aided ...
Document type :
Communication dans un congrès avec actes
DOI :
Title :
Optimal power allocation in a relay-aided cognitive network
Author(s) :
Savard, Anne [Auteur]
Centre for Digital Systems [CERI SN - IMT Nord Europe]
Ecole nationale supérieure Mines-Télécom Lille Douai [IMT Nord Europe]
Circuits Systèmes Applications des Micro-ondes - IEMN [CSAM - IEMN ]
Circuits Systèmes Applications des Micro-ondes - IEMN [CSAM - IEMN]
Ecole nationale supérieure Mines-Télécom Lille Douai [IMT Lille Douai]
Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]
Belmega, E. Veronica [Auteur]
Equipes Traitement de l'Information et Systèmes [ETIS - UMR 8051]

Centre for Digital Systems [CERI SN - IMT Nord Europe]
Ecole nationale supérieure Mines-Télécom Lille Douai [IMT Nord Europe]
Circuits Systèmes Applications des Micro-ondes - IEMN [CSAM - IEMN ]
Circuits Systèmes Applications des Micro-ondes - IEMN [CSAM - IEMN]
Ecole nationale supérieure Mines-Télécom Lille Douai [IMT Lille Douai]
Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]
Belmega, E. Veronica [Auteur]
Equipes Traitement de l'Information et Systèmes [ETIS - UMR 8051]
Conference title :
12th EAI International Conference on Performance Evaluation Methodologies and Tools
City :
University Illes Balears
Country :
Espagne
Start date of the conference :
2019-03-13
Journal title :
ACM International conference Proceeding series
Publisher :
ASSOC COMPUTING MACHINERY
ACM
ACM
Publication date :
2019
English keyword(s) :
Relay-aided cognitive network
Decode-and-Forward
Compress-and-Forward
Power allocation
Decode-and-Forward
Compress-and-Forward
Power allocation
HAL domain(s) :
Sciences de l'ingénieur [physics]
English abstract : [en]
In this paper, we address a power allocation problem in a relay-aided cognitive network. The network is composed by a primary and secondary user/ destination pair and a relay, which helps the communication between the ...
Show more >In this paper, we address a power allocation problem in a relay-aided cognitive network. The network is composed by a primary and secondary user/ destination pair and a relay, which helps the communication between the secondary user and its destination. The transmission of the secondary user and the helping relay is allowed provided that a minimum quality of service (QoS) constraint is met at the primary user. First, we derive the achievable rate regions under Decode-and-Forward (DF) and Compress-and-Forward (CF) relaying schemes. Then, we provide analytic expressions of the optimal power allocation policies at the secondary user and the relay. Remarkably, if the secondary direct link is negligible -the communication takes place only via the relay - DF is proven to always outperform CF, irrespective from the system parameters. If the secondary direct link is not negligible, our numerical results illustrate that DF outperforms CF only when the relay is close to the secondary user.Show less >
Show more >In this paper, we address a power allocation problem in a relay-aided cognitive network. The network is composed by a primary and secondary user/ destination pair and a relay, which helps the communication between the secondary user and its destination. The transmission of the secondary user and the helping relay is allowed provided that a minimum quality of service (QoS) constraint is met at the primary user. First, we derive the achievable rate regions under Decode-and-Forward (DF) and Compress-and-Forward (CF) relaying schemes. Then, we provide analytic expressions of the optimal power allocation policies at the secondary user and the relay. Remarkably, if the secondary direct link is negligible -the communication takes place only via the relay - DF is proven to always outperform CF, irrespective from the system parameters. If the secondary direct link is not negligible, our numerical results illustrate that DF outperforms CF only when the relay is close to the secondary user.Show less >
Language :
Anglais
Peer reviewed article :
Oui
Audience :
Internationale
Popular science :
Non
Source :