Low-complexity centralized joint power and admission control in cognitive radio networks

Authors:
Hong-Yu Gu;Chen-Yang Yang;Bernard Fong
Affiliations:
School of Electronics and Information Engineering, Beihang University, China;School of Electronics and Information Engineering, Beihang University, China;Hong Kong Polytechnic University
Venue:
IEEE Communications Letters
Year:
2009

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Abstract

This letter introduces a centralized joint power and admission control algorithm for cognitive radio networks. Its novelty lies in the proposed admission metric. Unlike those in existing algorithms, our metric predetermines the admission order of N secondary users which intend to access the network. This allows us to search a group of admitted secondary users with the bisection method. The proposed algorithm is shown by simulation to achieve a comparable performance to existing algorithms, and the computational complexity is reduced from O(N3) to O(N2log2N).