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Cognitive radio (CR) has become a promising technology for enhancing spectrum efficiency through adaptive reconfiguration of radio communication parameters in dynamically changing communication settings. At the same time, rapidly evolving technology has allowed software defined radio (SDR) platforms to have opportunistic access to radio spectrum to hardware to produce cognitive radio algorithms.Cognitive radios are said to be one-of-a-kind, software-defined, artificially intelligent radios that can change operational parameters including frequency domains, modulation type, and power...

Kognitiver Funk (CR) hat sich zu einer vielversprechenden Technologie zur Verbesserung der Spektrumeffizienz durch adaptive Rekonfiguration von Funkkommunikationsparametern in sich dynamisch verändernden Kommunikationsumgebungen entwickelt. Gleichzeitig hat die sich rasch entwickelnde Technologie es Software Defined Radio (SDR)-Plattformen ermöglicht, opportunistischen Zugang zum Funkspektrum zu erhalten, um kognitive Funkalgorithmen zu entwickeln.Kognitive Funkgeräte werden als einzigartige, softwaredefinierte, künstlich intelligente Funkgeräte bezeichnet, die Betriebsparameter wie...

La radio cognitive (RC) est devenue une technologie prometteuse pour améliorer l'efficacité du spectre par la reconfiguration adaptative des paramètres de communication radio dans des contextes de communication changeant dynamiquement. Dans le même temps, l'évolution rapide de la technologie a permis aux plateformes de radio logicielle (SDR) d'avoir un accès opportuniste au spectre radioélectrique pour le matériel afin de produire des algorithmes de radio cognitive.On dit que les radios cognitives sont des radios uniques, définies par logiciel et artificiellement intelligentes qui...

Health education should be need based. Before involving any individual, group or the community in health education with a particular purpose. The need should be curtained, specific and relevant to the problems and available solutions. While the history of health education as an emerging profession isonly a little over one hundred years old, the concept of educatingabout health has been around since the dawn of humans. It does notstretch the imagination too far to begin to see how health educationfirst took place during pre-historic era. Some one may have eaten aparticular plant or herb and...