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：6
页码：10458
DOI：10.15680/IJIRSET.2017.0606045
出版社：S&S Publications
摘要：Wireless communications had wide range of applications in day-to-day life. As a result, spectrum usageis also. To use spectrum efficiently and effectively we proposed channel hopping algorithm of CR networks andimplemented this algorithm in MANETS. In this algorithm we have calculated the expected time taken by the CR userto get the free channel. The delay is reduced when this algorithm is implemented in MANETS compared to CRNsbecause CRNs are mainly for spectrum sensing but in MANETS, the nodes are self-configured and they can changetheir location during transmissions. CR users also need to sense the spectrum and vacate the channel upon the detectionof the PU’s presence to protect PUs from harmful interference. Here we have presented the channel hopping algorithmwhich enables dynamic access to the spectrum and ensures to vacate the allocated channel if PU returns and move theCR user to some other vacant channel giving priority to PUs. Based on the PU activity on each channel, a ranking tableis built to identify the channels which are available.
关键词：Cognitive radio networks; spectrum sensing; ranking table and MANETS.
