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标题：Channel and Power Allocation in Cognitive Radio Network using Iterative Water-filling Method
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作者：Akanksha Bajpai ; Dr. Anubhuti Khare
期刊名称：International Journal of Innovative Research in Science, Engineering and Technology
印刷版ISSN：2347-6710
电子版ISSN：2319-8753
出版年度：2017
卷号：6
期号：9
页码：18390
DOI：10.15680/IJIRSET.2017.0609129
出版社：S&S Publications
摘要：Radio spectrum is the backbone of wireless communication system. Cognitive Radio is a revolutionarytechnology which has helped in improvement of spectrum usage efficiently. The cognitive user (CU) can not only usethe free spectrum, but is capable of sharing a channel with primary user (PU). In this paper, a power allocationalgorithm, known as “iterative water filling algorithm” is used to investigate the power allocation in between thechannels of cognitive radio network. Here, the PUs and CUs will coexist in the same spectrum but with the conditionthat the interference caused by CU will not exceed a certain threshold and will not affect communication for PUs.Simulation results showed that the use of proposed algorithm helps in improvement of overall system capacity.
关键词：Cognitive Radio; Power allocation; Cognitive User; Water-filling algorithm.