Title :
Optimal spectrum sensing time considering spectrum handoff due to false alarm in cognitive radio networks
Author :
Lee, Dong-Jun ; Jang, Myung-Sung
Author_Institution :
Sch. of Electron., Telecommmunications & Comput. Eng., Korea Aerosp. Univ., Seoul, South Korea
fDate :
12/1/2009 12:00:00 AM
Abstract :
In cognitive radio networks, a false alarm event in spectrum sensing in a frequency channel causes the secondary user currently using the frequency channel to execute spectrum handoff to another channel. Although determination of optimal spectrum sensing time has been studied, there has been few research addressing the optimal sensing time considering spectrum handoff. In this study, we formulate an optimization problem which considers the spectrum handoff due to false alarm of spectrum sensing and find the optimum spectrum sensing times related.
Keywords :
cognitive radio; radio spectrum management; cognitive radio networks; false alarm event; frequency channel; optimal spectrum sensing time; optimization problem; spectrum handoff; Cognitive radio; Energy measurement; Noise measurement; Noise robustness; Radio frequency; Radio network; Radio spectrum management; Signal to noise ratio; Time measurement; Working environment noise; Cognitive radio, false alarm, spectrum handoff, spectrum sensing;
Journal_Title :
Communications Letters, IEEE
DOI :
10.1109/LCOMM.2009.12.091448
