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http://dx.doi.org/10.5515/KJKIEES.2008.19.6.677

Interference Avoidance Technology in Cognitive Based MB-OFDM UWB System  

Sung, Tae-Kyung (UWB Wireless Communications Research Center, Inha Univeristy)
Weon, Young-Su (HANGREENTECH Technology Institute)
Cho, Hyung-Rae (Department of Radio Communication Engineering, Korea Maritime University)
Publication Information
The Journal of Korean Institute of Electromagnetic Engineering and Science / v.19, no.6, 2008 , pp. 677-687 More about this Journal
Abstract
CR technology is an intelligent technology which can sense the spectrum environment an adaptively adjust the parameters for wireless transmission. In this paper, by using CR-UWB, the spectrum efficiency of the transmission channel is largely improved; Furthermore, the interference to other system can be effectively avoided. In this paper, we propose a solution on interference problem of UWB system using cognitive radio. We use interference temperature model of cognitive radio that has proposed by FCC for estimating interference signal. Calculating channel capacity of UWB system with interference temperature, we suggest how to solve interference problem. We have used genetic algorithm in cognitive engine's calculation precess. The proposed UWB System with cognitive radio shows very efficient in solving interference problem.
Keywords
CR(Cognitive Radio); UWB(Ultra Wideband); Interference Avoidance; Cognitive Engine;
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