Research Article
Near Optimal Power Allocation Algorithm for OFDM-Based Cognitive Using Adaptive Relaying Strategy
@INPROCEEDINGS{10.4108/icst.crowncom.2012.248500, author={Hamza SOURY and Faouzi Bader and Musbah Shaat and Mohamed-Slim Alouini}, title={Near Optimal Power Allocation Algorithm for OFDM-Based Cognitive Using Adaptive Relaying Strategy}, proceedings={7th International Conference on Cognitive Radio Oriented Wireless Networks}, publisher={IEEE}, proceedings_a={CROWNCOM}, year={2012}, month={7}, keywords={cognitive radio adaptive relaying protocol multicarrier ofdm power allocation decode-and-forward amplify-and-forward pairing}, doi={10.4108/icst.crowncom.2012.248500} }- Hamza SOURY
Faouzi Bader
Musbah Shaat
Mohamed-Slim Alouini
Year: 2012
Near Optimal Power Allocation Algorithm for OFDM-Based Cognitive Using Adaptive Relaying Strategy
CROWNCOM
IEEE
DOI: 10.4108/icst.crowncom.2012.248500
Abstract
Relayed transmission increases the coverage and achievable capacity of communication systems. Adaptive relaying scheme is a relaying technique by which the benefits of the amplifying or decode and forward techniques can be achieved by switching the forwarding technique according to the quality of the signal. A cognitive Orthogonal Frequency-Division Multiplexing (OFDM) based adaptive relaying protocol is considered in this paper. The objective is to maximize the capacity of the cognitive radio system while ensuring that the interference introduced to the primary user is below the tolerated limit. A Near optimal power allocation in the source and the relay is presented for two pairing techniques such that the matching and random pairing. The simulation results confirm the efficiency of the proposed adaptive relaying protocol, and the consequence of choice of pairing technique.