TY - GEN
T1 - Distributed cooperative spectrum sensing based on weighted average consensus
AU - Zhang, Wenlin
AU - Wang, Zheng
AU - Guo, Yi
AU - Liu, Hongbo
AU - Chen, Yingying
AU - Mitola, Joseph
PY - 2011
Y1 - 2011
N2 - In this paper, we study the distributed spectrum sensing in cognitive radio networks. Using weighted average consensus algorithm, we develop a weighted soft measurement combining scheme without the centralized fusion center. After the measurement by the energy detector, each secondary user (SU) exchanges their own measurement statistics with its local neighbors, and chooses the information exchanging rate according to the estimated average signal-to-noise ratio (SNR). We prove the convergence of the consensus iteration, and each SU will hold the global decision statistics from the weighted soft measurement combining throughout the network. The proposed scheme is robust with respect to temporary communication link failures. Simulation results show our method has a better performance than the existing average consensus-based approach.
AB - In this paper, we study the distributed spectrum sensing in cognitive radio networks. Using weighted average consensus algorithm, we develop a weighted soft measurement combining scheme without the centralized fusion center. After the measurement by the energy detector, each secondary user (SU) exchanges their own measurement statistics with its local neighbors, and chooses the information exchanging rate according to the estimated average signal-to-noise ratio (SNR). We prove the convergence of the consensus iteration, and each SU will hold the global decision statistics from the weighted soft measurement combining throughout the network. The proposed scheme is robust with respect to temporary communication link failures. Simulation results show our method has a better performance than the existing average consensus-based approach.
UR - http://www.scopus.com/inward/record.url?scp=84863133310&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84863133310&partnerID=8YFLogxK
U2 - 10.1109/GLOCOM.2011.6134149
DO - 10.1109/GLOCOM.2011.6134149
M3 - Conference contribution
AN - SCOPUS:84863133310
SN - 9781424492688
T3 - GLOBECOM - IEEE Global Telecommunications Conference
BT - 2011 IEEE Global Telecommunications Conference, GLOBECOM 2011
T2 - 54th Annual IEEE Global Telecommunications Conference: "Energizing Global Communications", GLOBECOM 2011
Y2 - 5 December 2011 through 9 December 2011
ER -