Computing and communications are central issues in cognitive radio networks. The cognitive users are increasing exponentially and the available spectrum resource is constant. Therefore, efficient usage of spectrum through cognitive radio networks is essential. The real-time communications in cognitive radio networks with increasing demand for spectrum is possible through nanocomputing. Nanocomp...

Spectrum scarcity and underutilization in wireless networks, arising due to traditional static spectrum allocation, have been of great concern since the past decade. The suboptimal use of spectrum motivates new wireless concepts where unlicensed users opportunistically access licensed spectrum using cognitive radio technology. A cognitive radio can change its operating parameter intelligently i...

Cognitive radio means a radio system whose parameters is changing dynamically according to the external environment. By using the several cognitive radios’ in the network they built Cognitive Radio Networks (CRNs). CRNs has the capability to deal with the exact requirement of the radio spectrum as well as take care of its shortage .Cognitive Radio Networks plays an important role to solve the p...

Radio spectrum needed for applications such as mobile telephony, digital video broadcasting (DVB), wireless local area networks (WiFi), wireless sensor networks (ZigBee), and internet of things is enormous and continues to grow exponentially. Since spectrum is limited and the current usage can be inefficient, cognitive radio paradigm has emerged to exploit the licensed and/or underutilized spec...

In this paper, we propose a novel multi-band routing method for cognitive radio using ad-hoc networks. The cognitive radio is considered being used for the secondary radio systems under the frequency bands assigned to the primary systems. In order to realize such systems, the method for minimization of giving interference toward the primary systems is required. As one of the solution for the in...