Cognitive radio is a revolutionary technology that allows efficient, adaptable and intelligent use of spectrum without causing interference to the current licensed users. For cognitive radio adaptability, optimal usability and the power to evolve are the major factors that set apart an evolutionary machine. This paper introduces the concept of spectrum and network heterogeneity in case of cogni...

Cognitive radio is a smart that can change its transmitter parameter based on interaction with the environment in which it operates. The demand for frequency spectrum growing due to big data issue as many Internet of Things (IoT) devices are network. Based previous research, most was used, but some spectrums were not called hole. Energy detection one sensing methods has been frequently used sin...

Cognitive radio is an emerging and fascinating technology for the opportunistic use of under-utilized spectrum that promises to change the future technological trends forever if employed properly. This work focuses on the practical implementation of a cognitive radio network.