Near optimal power allocation algorithm for OFDM-based cognitive using adaptive relaying strategy

Hamza Soury, Faouzi Bader, Musbah M R Shaat, Mohamed-Slim Alouini

Research output: Chapter in Book/Report/Conference proceedingConference contribution

5 Scopus citations

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. © 2012 ICST.
Original languageEnglish (US)
Title of host publicationProceedings of the 7th International Conference on Cognitive Radio Oriented Wireless Networks
PublisherEuropean Alliance for Innovation n.o.
Pages212-217
Number of pages6
ISBN (Print)9781936968558
DOIs
StatePublished - 2012

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