文章基本信息

标题：Energy Efficiency in Cognitive Radio Network
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作者：P.S.M. Tripathi ; Ramjee Prasad
期刊名称：Journal of Green Engineering
印刷版ISSN：1904-4720
电子版ISSN：2245-4586
出版年度：2012
卷号：2
期号：1
语种：English
出版社：River Publishers
摘要：In recent years, green communications has received a lot of attention in academic society. Cognitive radio techniques have been introduced to improve the spectrum utilization in already allocated spectrum band to licensed user as well as it promotes green communications. Under spectrum sharing model, secondary users can share spectrum with primary users under condition that total interference caused by SUs should not be exceeded from a predefined level. Energy efficiency is one of the important metric in cognitive radio network as it has to work under strict transmit power constraint. In this paper we explore how better energy efficiency can be achieved in spectrum sharing environment. Our analysis shows that energy efficiency in cognitive radio network is better when number of secondary users is more than available channels.
关键词：cognitive radio; quality of service; power control; spectrum sharing; energy efficiency