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Radio Resource Sharing using Power Control of Base-station in Cognitive Radio System  

Kwon, Yang-Soo (인하대학교 전자공학과 무선이동통신 연구실)
Ji, Young-Geun (인하대학교 전자공학과 무선이동통신 연구실)
Chung, Jae-Hak (인하대학교 전자공학과 무선이동통신 연구실)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.32, no.10A, 2007 , pp. 1057-1064 More about this Journal
Abstract
Cognitive radio(CR) technique which utilizes empty frequency bands allocated to private business but not being used temporally has been researched. According to the standard, CR users detect the primary user using the same channel, CR users should move to the another channel to guarantee the primary user's decodability. Thus, CR systems cannot use the same channel and support the CR user's QoS(Quality of Service) during the channel moving time. In this paper, we propose a radio resource sharing method that CR basestation controls the transmission power with the primary user's SNR(Signal to Noise Ratio) to increase the spectral efficiency of area and to minimize the outage of CR users. In addition, computer simulation demonstrates show that the proposed method improved spectral efficiency of area and decreased outage probability of CR users.
Keywords
Cognitive Radio; Interference Temperature limit; Signal to Interference and Noise Ratio; Power Control; Outage Probability;
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