Download Cognitive Radio Networks: From Theory to Practice by Ahmed Khattab PDF

By Ahmed Khattab

This publication describes a conversation paradigm which can form the way forward for instant conversation networks, Opportunistic Spectrum entry (OSA) in Cognitive Radio Networks (CRN). whereas a number of theoretical OSA methods were proposed, they're challenged by means of the sensible barriers of cognitive radios: the main permitting know-how of OSA. This e-book provides an unparalleled formula of the OSA challenge in CNR that takes under consideration the sensible obstacles encountered as a result of latest applied sciences. according to this sort of challenge formula, this e-book offers a framework and protocol information enforcing the analytically-optimized resolution of this challenge. not like the cutting-edge of CRN implementations that sometimes goal software program outline radios which aren't compatible for genuine platforms, this publication describes the implementation of allotted OSA, utilizing functional radio transceiver applied sciences. It offers a radical characterization of the profits to be had to theoretical OSA methods if the sensible obstacles are considered.

  • Tackles the cognitive radio networks functionality optimization challenge, considering the sensible barriers of today’s technologies;
  • offers thorough functionality evaluate in arbitrary, large-scale networks, in addition to microscopic, small-scale functionality evaluate, utilizing life like implementation;
  • Presents an empirical learn of the profits on hand over latest concepts by means of adopting functional approaches;
  • Tackles the cognitive radio networks functionality optimization challenge, considering the sensible barriers of today’s technologies;
  • presents thorough functionality assessment in arbitrary, large-scale networks, in addition to microscopic, small-scale functionality review, utilizing real looking implementation;
  • Presents an empirical learn of the profits on hand over latest options by way of adopting sensible approaches;

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Extra info for Cognitive Radio Networks: From Theory to Practice

Sample text

Area. Comm. 25(3), 589–600 (2007) 19. : Opportunistic spectrum access in cognitive radio networks. In: Proceedings of IEEE INFOCOM 2008, Phoenix, AZ (2008) 20. : Price-based spectrum management in cognitive radio networks. IEEE J. Sel. Top. Signal Process. 2(1), 74–87 (2008) 21. : Efficient resource allocation with flexible channel cooperation in OFDMA cognitive radio networks. In: Proceedings of IEEE INFOCOM 2010, San Diego, CA (2010) 22. : MAC protocol for opportunistic cognitive radio networks with soft guarantees.

Thus, spectrum mobility is associated with a handoff mechanism that guarantees the transition to the new frequency band without breaking (or significantly degrading the quality of) the communication between communicating cognitive radio terminals. While the cognition functions of the cognitive radio mainly affect the lower layers of the CRN, namely the physical and medium access layers, spectrum mobility and handoff also affect higher layers. Hence, spectrum mobility schemes should ensure smooth and fast frequency transition and protocol/paramter adjustment in order to minimize the latency that could harm the performance of higher layer protocols.

Competition in cognitive radio networks: Spectrum leasing and innovation. 1 Opportunistic Spectrum Sensing The problem of finding which frequency bands to sense and probe before transmission has been widely addressed in the context of both multi-channel networks and CRNs (see [1] and references therein for a more detailed discussion). Recently, the focus of the related literature was to relax the assumptions/requirements of the sensing module of a cognitive radio. For instance, adopting only a subset of the available frequency bands to probe has been proposed in [2, 3] based on distributed learning techniques.

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