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The Journal of The Korea Institute of Intelligent Transport Systems Vol.8 No.5 pp.121-127
애드 혹 네트워크기반 무선인지 시스템에서 스펙트럼 센싱
Spectrum Sensing Technique in Cognitive Radio Systems Based on Ad-Hoc Networks
Abstract
Wireless devices can communicate between each other without existing infrastructure in mobile Ad-hod network. Ad hoc networks can be used under difficult conditions, where it is difficult to construct infrastructures, such as shadowing areas, disaster areas, war area, and so on. In order to support to considerable and various wireless services, more spectrum resources are needed. However, efficient utilization of the frequency resource is difficult because of spectrum scarcity and the conventional frequency regulation. Ad-hoc networks employing cognitive radio (CR) system that guarantee high spectrum utilization provide effective way to increase the network capacity. In this paper, we simulate and compare the performance of conventional single and cooperative spectrum sensing with CR system using ad-hoc networks. And we demonstrate performance improvement by analyzing the system performance.
