Cognitive radio is a paradigm for wireless communication in which either a network or a wireless node changes its transmission or reception parameters to communicate efficiently avoiding interference with licensed or unlicensed users. This alteration of parameters is based on the active monitoring of several factors in the external and internal radio environment, such as radio frequency spectrum, user behaviour and network state.
Cognitive Radio System: A radio system employing technology that allows the system to obtain knowledge of its operational and geographical environment, established policies and its internal state; to dynamically and autonomously adjust its operational parameters and protocols according to its obtained knowledge in order to achieve predefined objectives; and to learn from the results obtained.
SOURCE: The 6th Meeting of the APT Wireless Forum, 31 March – 03 April 2009, Danang, Vietnam, Document AWF-6/INP-40
The majority of professional event production devices operate on 100 % duty cycle and can't be a cognitive radio. Few special devices could in future form restricted cognitive characteristics.