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Download Cognitive Radio, Software Defined Radio, and Adaptive by Hüseyin Arslan PDF

By Hüseyin Arslan

Today’s instant prone have come some distance because the roll out of the traditional voice-centric mobile platforms. The call for for instant entry in voice and excessive price info multi-media purposes has been expanding. New new release instant conversation structures are geared toward accommodating this call for via larger source administration and more desirable transmission applied sciences. This publication discusses the cognitive radio, software program outlined radio, and adaptive radio strategies from numerous perspectives.

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References 1. R. W. Thomas, L. A. DaSilva, and A. B. MacKenzie, “Cognitive networks,” in Proc. of IEEE DySPAN 2005, pp. 352–360, November 2005. 2. J. Mitola, Cognitive Radio: An Integrated Agent Architecture for Software Defined Radio. PhD thesis, Royal Institute of Technology (KTH), 2000. 3. V. Srivastava and M. Motani, “Cross-layer design: A survey and the road ahead,” IEEE Communications Magazine, vol. 43, no. 12, pp. 112–119, 2005. 4. V. Kawadia and P. R. Kumar, “A cautionary perspective on cross-layer design,” IEEE Wireless Communications, vol.

DirectionControl The second cognitive element’s behavior is DirectionControl. DirectionControl moves the directional antenna to the orientation that maximizes the received SINR from a node’s parent node. There are several direction-finding algorithms in the literature [27] and DirectionControl can implement one of these. If a node is a part of the multicast routing tree, it directs its antenna such that the power received from the parent is maximized with respect to the amount of interference and noise.

5 Future Questions and Research Areas The previous sections make a case for the “what, why, and how” of cognitive networks. We now examine major issues that need to be addressed in order to move from concept to reality. There is an implicit assumption in this chapter that the cognitive network implements configuration changes synchronously. The details of actually making this happen with high reliability are likely to be complex. The implications of nodes’ switching configuration at different times may be worse than if no adaptation had been performed at all.

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