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http://dx.doi.org/10.3837/tiis.2011.07.001

Robust Power Control for Cognitive Radio in Spectrum Underlay Networks  

Zhao, Nan (School of Information and Communication Engineering, Dalian University of Technology)
Sun, Hongjian (Centre for Telecommunications Research, King's College)
Publication Information
KSII Transactions on Internet and Information Systems (TIIS) / v.5, no.7, 2011 , pp. 1214-1229 More about this Journal
Abstract
Power control is a key technique in spectrum underlay cognitive network to guarantee the interference temperature limit of the primary users (PUs) and the quality of service of the secondary users (SUs). In this paper, a robust power control scheme via link gain pricing with $H_{\infty}$ estimator is proposed. The scheme guarantees the interference temperature of the PUs through operating in the network-centric manner, and keeps the fairness between the SUs through link gain pricing. Furthermore, the $H_{\infty}$ filter is also used in the proposed scheme to estimate the channel variation, and thus the power control scheme is robust to the severe channel fading. Plenty of simulations are taken, and prove its superior robust performance against the channel fading, and its effectiveness in guaranteeing the interference temperature limit of the PUs.
Keywords
Cognitive radio; spectrum sharing; power control; spectrum underlay network; $H_{\infty}$ filter;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
Times Cited By Web Of Science : 1  (Related Records In Web of Science)
Times Cited By SCOPUS : 0
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