What is CRS (Cognitive radio systems)?

CRS method is used by any arrangement of a radiocommunication service in a given frequency band will work as per the arrangements of the Radio Regulations governing the utilization of that band. It permits the framework to get information of its functional and geographical climate, set up policies and its internal state; to progressively change its operational boundaries and protocols as indicated by its acquired information. A cognitive radio system (CRS) is a disruptive innovation focusing on exceptionally high spectral efficiency.