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The spectrum or the whitespaces that are not being used by licensed or primary users (PUs) can be sensed and operated by the unlicensed or the secondary users (SUs) in the cognitive radio networks (CRN) in such a way that there is no impact on the activities of the primary users. One mechanism for topology management is referred to as clustering. This organizes the nodes in logical sets so that the...
Cognitive Radio networks (CRNs) implement dynamic spectrum sensing and management techniques to address the underutilization of limited available spectrum in wireless networks. Both dynamic and opportunistic spectrum sensing techniques are frequently used by the cognitive radios (CRs) to identify the spectral holes in licensed spectrum of the primary users (PUs) and allocate these bands to the unlicensed...
The rapid growth of wireless devices has to a dramatically increased in the needs of spectrum access from wireless services. Cognitive Radio (CR) technology is a promising solution to enhance the spectrum utilization by enabling unlicensed users to exploit the licensed spectrum in an opportunistic manner. In this paper, sequential channel sensing problems for single and multiple secondary users (SUs)...
In this paper, we present the end-to-end interference aware concept of Cognitive wireless mesh network (CWMN). CWMN is the leading upcoming technology with the advantage of cognitive radio (CR). We demonstrate that the end-to-end interference model has the ability to perform better from SINR base model. To enhance the utilization of the unused spectrum the channel selection strategy should have some...
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