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首页> 外文期刊>International journal of communication systems >Multi-slot-based dynamic clustering in cognitive radio network
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Multi-slot-based dynamic clustering in cognitive radio network

机译：Multi-slot-based dynamic clustering in cognitive radio network

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The current work investigates the performance of multi-slot-based dynamicclustering in a cognitive radio network. For the spectrum sensing, everysecondary user utilizes the multi-slots of sensing time frame and combines thedecisions of every multi-slot, using the OR logic scheme, to get the sub-localdecision. The channel state information of the connections among the secondaryusers and access points present on the network's access points has beenused to cluster the secondary users. To form the clusters, the secondary userswith higher quality reporting channels for a specific access point have beenchosen. Therefore, the clusters formed, in each iteration, with their respectiveaccess points, are dynamic in nature. Every secondary user in a cluster detectsthe availability of a primary user, makes a decision, and forwards it to itscorresponding access point, via the reporting-channel. Each access pointemploys the OR rule to merge the decisions of secondary users in therespective clusters, to make a local decision. Finally, the local decisions of allaccess points have been directed to fusion center, making the final decisionabout primary user's accessibility. The performance of multi-slot-baseddynamic clustering has been studied relative to the different parameters, likedetection probability, number of clusters, number of multi-slots, secondaryusers, and access points. Further, the performance evaluation and comparisonsof a multi-slot-based cognitive radio network with a single slot, cluster-basedcognitive radio network with non-clustered, and multi-slot-based dynamiccluster with individual multi-slots as well as dynamic clustering, havebeen done.

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