Adaptive resource allocation and decoding strategy for underlay multi-carrier cooperative cognitive radio systems - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Transactions on emerging telecommunications technologies Année : 2013

Adaptive resource allocation and decoding strategy for underlay multi-carrier cooperative cognitive radio systems

Résumé

This paper proposes a resource allocation and decoding strategy at the secondary system for underlay and interweave multi-carrier cooperative cognitive radio. The objective is to maximise the sum rate of both primary and secondary systems , taking into account the interference threshold constraint and the fact that the primary receiver always considers interference as noise. The decoding method at the secondary receivers is either Successive Interference Cancellation or treating interference as noise, depending on their channel gains. The rationale for this strategy is the extension of the Han-Kobayashi capacity-achieving strategy on the Gaussian interference channel to the studied cognitive scenario. The proposed resource allocation algorithm is composed of a subcarrier allocation procedure to avoid intercell interference between secondary cells and of an iterative power allocation algorithm that maximises the sum rate on the primary and secondary cells, respectively. The proposed algorithm achieves high data rate improvements for the secondary systems while maintaining a low degradation on the primary system's rate. It also benefits from multiuser diversity and is robust to the distance variations.
Fichier principal
Vignette du fichier
10.1002_ett.2729.pdf (853.55 Ko) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)
Loading...

Dates et versions

hal-02446769 , version 1 (19-03-2020)

Identifiants

Citer

Mylène Pischella, Didier Le Ruyet. Adaptive resource allocation and decoding strategy for underlay multi-carrier cooperative cognitive radio systems. Transactions on emerging telecommunications technologies, 2013, 24 (7-8), pp.748-761. ⟨10.1002/ett.2729⟩. ⟨hal-02446769⟩
56 Consultations
125 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More