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학술대회 Performance Evaluation of a CR-Based WRAN System using Spectrum Utilization Efficiency
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저자
강현덕, 홍헌진, 김창주
발행일
200810
출처
International Conference on Wireless Communications, Networking and Mobile Computing (WiCOM) 2008, pp.1-4
DOI
https://dx.doi.org/10.1109/WiCom.2008.311
협약과제
08MR4500, 스펙트럼 공학 및 밀리미터파대 전파자원 이용기술개발, 김창주
초록
A cognitive radio system is one of promising solutions that can relieve the spectrum shortage problem by using spectrum overlay sharing. The performance of a cognitive radio system can be evaluated by the spectral utilization efficiency. Considering net system coverage, we propose area efficiency in order to measure the spectrum utilization efficiency of a CRbased wireless regional area network (WRAN) system over TV bands. Based on a coexistence scenario between WRAN and DTV systems, we evaluate area efficiency and compare it with the conventional ones such as spectral/coverage efficiency. From simulation results it is observed that area efficiency Is more useful than spectral/coverage efficiency under spectrum sharing environment such as the number of available frequency bands and the available amount of given geographical area. © 2008 IEEE.
키워드
Cognitive radio, DTV, Spectrum overlay sharing, Spectrum utilization efficiency, TV channels
KSP 제안 키워드
Cognitive Radio System, Coverage efficiency, Performance evaluation, Spectrum utilization, TV Band, Utilization efficiency, Wireless Regional Area Network, area efficiency, coexistence scenario, cognitive radio(CR), frequency band