Title :
Distortion-Less Real-Time Spectrum Sniffing Based on a Stepped Group-Delay Phaser
Author :
Nikfal, Babak ; Badiere, Daniel ; Repeta, Morris ; Deforge, Brad ; Gupta, Shulabh ; Caloz, Christophe
Author_Institution :
Dept. of Electr. Eng., Ecole Polytech. de Montreal, Montréal, QC, Canada
Abstract :
The concept of real-time spectrum sniffing - featuring a simple and low-cost circuit architecture with straightforward frequency scalability - is introduced for cognitive radio systems. A stepped group-delay phaser is proposed and demonstrated to eliminate the issue of frequency resolution limitation due to the dispersion spreading induced by conventional phasers.
Keywords :
cognitive radio; radio spectrum management; circuit architecture; cognitive radio system; real-time spectrum sniffing; stepped group delay phaser; straightforward frequency scalability; Bandwidth; Broadband antennas; Cognitive radio; Delay; Dispersion; Real-time systems; Dispersive delay structures; frequency discrimination; phaser; short-range communications; spectrum sniffing;
Journal_Title :
Microwave and Wireless Components Letters, IEEE
DOI :
10.1109/LMWC.2012.2219514
