Distributed admission and power control for cognitive radios in spectrum underlay networks

John George, Ahmed Sultan, Mohammed Nafie

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

8 Scopus citations


In this paper we investigate admission control and power allocation for cognitive radios in an underlay network. We consider the problem of maximizing the number of supported secondary links under their minimum QoS requirements without violating the maximum tolerable interference on primary receivers in a cellular network. An optimal solution to our problem is shown in previous works to be NP-hard. We propose an efficient distributed algorithm with reasonable complexity that provides results close to the optimum solution without requiring neither a large amount of signaling nor a wide range of information about the system parameters. Our algorithm is compared with previously proposed algorithms to demonstrate its relative efficiency.
Original languageEnglish (US)
Title of host publicationGLOBECOM - IEEE Global Telecommunications Conference
StatePublished - Dec 1 2009
Externally publishedYes

Bibliographical note

Generated from Scopus record by KAUST IRTS on 2023-09-22


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