Key Technologies of Congnitive Radio-based Communication System
Ying Xiao-fan · Communications technology · 2010
As a promising communication technology,congnitive radio could improve the system efficiency.The concept and system structure of congnitive radio-based communication system is presented,some key technologies are studied,including the spectrum sensing,dynamic spectrum management and channel estimation.Particularly,the typical schemes and their performances are discussed and evaluated.Finally the key problems to be solved and the combination with other technologies are explored.