Title :
A Parallel, Multi-Resolution Sensing Technique for Multiple Antenna Cognitive Radios
Author :
Neihart, Nathan M. ; Roy, Sumit ; Allstot, David J.
Author_Institution :
Dept. of Electr. Eng., Washington Univ., Seattle, WA
Abstract :
A parallel, multi-resolution spectrum sensing technique that is amenable to multiple-antenna cognitive radios is introduced. The authors show that for energy-detector-type spectrum sensors, the total sensing time due to FFT latency is reduced by 100 times using the proposed method versus the fixed-resolution, serial detection method employed in single-antenna systems. System-level tradeoffs such as the number of antennas, sensing bandwidth, and FFT size are also explored.
Keywords :
antenna arrays; cognitive radio; FFT latency; energy-detector-type spectrum sensors; multiple antenna cognitive radios; serial detection; Bandwidth; Cognitive radio; Computer vision; Contracts; Energy consumption; Frequency; Hardware; Sensor systems; Throughput; Transceivers;
Conference_Titel :
Circuits and Systems, 2007. ISCAS 2007. IEEE International Symposium on
Conference_Location :
New Orleans, LA
Print_ISBN :
1-4244-0920-9
Electronic_ISBN :
1-4244-0921-7
DOI :
10.1109/ISCAS.2007.378754
