Title :
Optimal Antenna Location of Secondary User for Spectrum Sensing in Cognitive Radio Networks
Author :
Juan Zhou ; Ying Shen ; Youxi Tang
Author_Institution :
Nat. Key Lab. of Sci. & Technol. On Commun., Univ. of Electron. Sci. & Technol. of China, Chengdu, China
Abstract :
This letter focuses on where to place antennas of the secondary user so as to minimize the spectrum sensing error probability in cognitive radio networks. We first study the detection probability and false alarm probability in spectrum sensing, considering the effects of path loss, correlated shadowing, multipath fading, background noise, and primary user location. Under the assumption of uniform primary user distribution in a circle, the optimal antenna location is derived.
Keywords :
antenna arrays; cognitive radio; error statistics; background noise; cognitive radio networks; correlated shadowing; detection probability; false alarm probability; multipath fading; multiple antennas; path loss effects; primary user location; secondary user optimal antenna location; spectrum sensing error probability; Antenna arrays; Cognitive radio; Fading; Sensors; Shadow mapping; Signal to noise ratio; Spectrum sensing; cognitive radio networks; optimal antenna location;
Journal_Title :
Communications Letters, IEEE
DOI :
10.1109/LCOMM.2013.070913.131031
