Distributed joint spectrum detection and power allocation in multi-band cognitive radio networks |
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Authors: | Xiao-yu WANG yuan-an LIU Gang XIE |
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Affiliation: | 1. School of Electronic Engineering, Beijing University of Posts and Telecommunications, Beijing 100876, China;2. School of Information and Communication Engineering, Beijing University of Posts and Telecommunications, Beijing 100876, China |
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Abstract: | This article proposes a novel dynamic spectrum sharing scheme in distributed multi-band cognitive radio networks. A non-cooperative game has been utilized to model the spectrum sharing among secondary base stations (SBSs). A distributed joint spectrum detection and power allocation algorithm is designed for maximizing the downlink throughput of secondary networks. Simulation results demonstrate that the proposed algorithm converges fast and achieves a better throughput performance than uniform threshold case. Meanwhile, the convergence of algorithm is proved by Nikaido-Isoda (N-I) function method. |
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Keywords: | cognitive radio (CR) spectrum sharing resource allocation detection threshold |
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