DocumentCode :
2345146
Title :
A robust uplink power control for cognitive radio networks
Author :
Hossain, Z. ; Habiba, U. ; Matin, M.A.
Author_Institution :
Dept. of Electr. Eng. & Comput. Sci., North South Univ., Dhaka, Bangladesh
fYear :
2010
fDate :
6-8 Sept. 2010
Firstpage :
1
Lastpage :
4
Abstract :
In our paper, we have addressed the power control issue of the cognitive radio network maintaining insignificant interference level to the primary users (PUs) as the power control algorithms ensure less interference to PUs as well as maximum SINRs for all secondary users (SUs) minimizing the total transmitting power of the secondary network. Power control through weighted least square (WLS) approach provides protection to PUs from the harmful interference induced by SUs but fails to support all the SUs with SINRs above minimum required value. To overcome this drawback, we propose an iteratively reweighted least squares (IRLS) based power control algorithm that provides SINRs to all the SUs above a threshold value maintaining acceptable interferences to PUs caused by SUs in the cognitive radio network. Our simulation result compares the performance of IRLS solution with the WLS solution and shows the convergence behavior of our algorithm.
Keywords :
cognitive radio; interference suppression; least mean squares methods; power control; telecommunication control; IRLS; SINR; WLS; cognitive radio network; interference suppression; iteratively reweighted least square approach; power control algorithm; weighted least square approach; Antenna arrays; Array signal processing; Cognitive radio; Interference constraints; Power control; Signal to noise ratio; Cognitive radio; IRLS; SINR; interference constraint; power control;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Wireless And Optical Communications Networks (WOCN), 2010 Seventh International Conference On
Conference_Location :
Colombo
Print_ISBN :
978-1-4244-7203-1
Type :
conf
DOI :
10.1109/WOCN.2010.5587314
Filename :
5587314
Link To Document :
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