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Efficient Spectrum Utilization Scheme Using Adjacent Cell's Incumbent User Cognition In Cognitive Ratio System  

Lee, Myeong-Geol (인하대학교 정보통신대학원)
Song, Jeong-Ig (인하대학교 정보통신대학원)
Sohn, Sung-Hwan (인하대학교 정보통신대학원)
Kim, Jae-Moung (인하대학교 정보통신대학원)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.32, no.1A, 2007 , pp. 66-74 More about this Journal
Abstract
Cognitive Radio system can guarantee available channel whenever, wherever by sensing surrounding channel condition. Therefore, there is a strict rule that have to use allocated channel efficiently without any interference from incumbent User. In this paper, to avoid interference which can occur during uplink transmission in CR system, we propose reporter using scheme which informs incumbent user's situation to adjacent cell to limit channel usage. Therefore, we can use more channel in each cell without interference. With this scheme we can expect better throughput using more channel in a large space with same resource.
Keywords
Cognitive Radio; Incumbent User; Interference avoidance; Reporter;
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