TY - GEN
T1 - GLRT based cooperative spectrum sensing with location information
AU - Han, Ning
AU - Li, Hongbin
AU - Fang, Jun
PY - 2010
Y1 - 2010
N2 - In this paper, we address the problem of cooperatively detecting a primary user with unknown transmit power among multiple cognitive radio (CR) users with their location information available at the CR base station. A generalized likelihood ratio test (GLRT) is developed at the CR base station to first estimate the transmit power of the primary user and then detect the primary user signal. The maximum likelihood (ML) estimate of the unknown transmit power is discussed in details in order to provide guidelines for the design of the cooperative detector. Performance verification of the ML estimate of the unknown transmit power is provided. Meanwhile, asymptotic performance analysis for the proposed GLRT is also presented. Simulation results show that the proposed detector exhibits better performance than conventional techniques in terms of detection probability with limited observations.
AB - In this paper, we address the problem of cooperatively detecting a primary user with unknown transmit power among multiple cognitive radio (CR) users with their location information available at the CR base station. A generalized likelihood ratio test (GLRT) is developed at the CR base station to first estimate the transmit power of the primary user and then detect the primary user signal. The maximum likelihood (ML) estimate of the unknown transmit power is discussed in details in order to provide guidelines for the design of the cooperative detector. Performance verification of the ML estimate of the unknown transmit power is provided. Meanwhile, asymptotic performance analysis for the proposed GLRT is also presented. Simulation results show that the proposed detector exhibits better performance than conventional techniques in terms of detection probability with limited observations.
KW - Cognitive radio
KW - cooperative spectrum sensing
KW - generalized likelihood ratio test
KW - maximum likelihood estimate
UR - http://www.scopus.com/inward/record.url?scp=79958018724&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=79958018724&partnerID=8YFLogxK
U2 - 10.1109/ACSSC.2010.5757608
DO - 10.1109/ACSSC.2010.5757608
M3 - Conference contribution
AN - SCOPUS:79958018724
SN - 9781424497218
T3 - Conference Record - Asilomar Conference on Signals, Systems and Computers
SP - 496
EP - 500
BT - Conference Record of the 44th Asilomar Conference on Signals, Systems and Computers, Asilomar 2010
T2 - 44th Asilomar Conference on Signals, Systems and Computers, Asilomar 2010
Y2 - 7 November 2010 through 10 November 2010
ER -