TY - GEN
T1 - An adaptive threshold method for spectrum sensing in multi-channel cognitive radio networks
AU - Gorcin, Ali
AU - Qaraqe, Khalid A.
AU - Celebi, Hasari
AU - Arslan, Huseyin
PY - 2010
Y1 - 2010
N2 - Opportunistic spectrum access feature of cognitive radio systems is a method to improve frequency underutilization of wireless spectrum. One of the techniques for detecting the unused bands is the energy detection for which selection of the threshold defines detection performance. In this paper, the adaptive threshold method is proposed as an alternative approach to estimate the threshold as a function of first and second order statistics of recorded signals. The proposed method does not require estimation of noise variance or signal to noise ratio and aims to minimize the effects of impairments introduced by wireless channel and non-stationary noise. The simulation results indicate that adaptive threshold has low false alarm and missed detection rates that can satisfy the detection requirements of multi-channel cognitive radios for either narrow or wideband spectrum sensing, when the standard deviation coefficient is selected properly.
AB - Opportunistic spectrum access feature of cognitive radio systems is a method to improve frequency underutilization of wireless spectrum. One of the techniques for detecting the unused bands is the energy detection for which selection of the threshold defines detection performance. In this paper, the adaptive threshold method is proposed as an alternative approach to estimate the threshold as a function of first and second order statistics of recorded signals. The proposed method does not require estimation of noise variance or signal to noise ratio and aims to minimize the effects of impairments introduced by wireless channel and non-stationary noise. The simulation results indicate that adaptive threshold has low false alarm and missed detection rates that can satisfy the detection requirements of multi-channel cognitive radios for either narrow or wideband spectrum sensing, when the standard deviation coefficient is selected properly.
UR - https://www.scopus.com/pages/publications/77954550078
U2 - 10.1109/ICTEL.2010.5478783
DO - 10.1109/ICTEL.2010.5478783
M3 - Conference contribution
AN - SCOPUS:77954550078
SN - 9781424452477
T3 - ICT 2010: 2010 17th International Conference on Telecommunications
SP - 425
EP - 429
BT - ICT 2010
T2 - 2010 17th International Conference on Telecommunications, ICT 2010
Y2 - 4 April 2010 through 7 April 2010
ER -