Titlebook: Cognitive Radio Networks; From Theory to Pract Ahmed Khattab,Dmitri Perkins,Magdy Bayoumi Book 2013 Springer Science+Business Media New Yor

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Introduction,erutilization and provide a solution for the wireless spectrum scarcity. OSA refers to the communications paradigm in which the communicating parties dynamically exploit the spectrum bands that are not utilized by the primary wireless services licensed to operate over such bands. CRNs are foreseen a

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Rate-Adaptive Probabilistic Approach for Opportunistic Spectrum Access,gnitive radio users to fairly share the available spectral opportunities without inter-flow communication. The RAP framework exploits coordinated random spectrum selection approach to relax the hardware requirements of the cognitive radio transceiver. For such a random spectrum selection, the RAP fr

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RAP-MAC Performance Optimization with Statistical PRN Guarantees,tions of today’s technologies. We analytically derive the optimal values of the parameters of the RAP-MAC protocol. More specifically, we find the values of the probabilities . and . as well as the maximum secondary transmission rates and powers that maximize the average rate of a secondary user whi

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RAP-MAC Performance Evaluation in Large-Scale Networks,rks. Our performance metrics are the AVERAGE goodput achieved by the CRN flows, the fairness in the distribution of the individual CRN goodput shares, and the outage encountered by the primary networks’ flows. We use a protocol that belongs to the family of hypothetically-optimal spectrum access pro

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Hardware Implementation,SA approach on the state-of-the-art experimental hardware platform in order to assess its performance under real-life conditions. In this chapter, we first discuss the available platforms that can be used to implement OSA. Then, we present a general framework that encapsulates the common functionali

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Conclusions and Future Directions,portunistic Spectrum Access approaches have been developed and theoretically optimized, they are challenged by the inherent constraints of practical implementation technologies. Analyzing these constraints and proposing an attractive and practical solution to counter these limitations have been the