Cognitive Radio (CR) is an intelligent radio that can dynamically access the radio spectrum. Secondary users in Cognitive Radio Network (CRN) can access the licensed spectrum without causing harmful interference to primary users. The performance of cognitive radio networking functionalities depends on the properties of the spectrum band in use. This necessitates a crosslayer design in the entir...

....... The modern battlefield is a demanding environment for tactical radio networks in that in addition to the variation in the wireless propagation environment, the radio must co-exist and contend with a high density of emitters having varying waveforms. Cognitive Radio (CR) is widely considered as a promising technology for providing the mechanisms to mitigate interference, and allow more f...