TY - GEN
T1 - Cooperative spectrum sensing in cognitive radio networks with weighted decision fusion scheme
AU - Peh, Edward C.Y.
AU - Liang, Ying Chang
AU - Guan, Yong Liang
AU - Zeng, Yonghong
PY - 2010
Y1 - 2010
N2 - In cognitive radio networks, both the sensing time and the fusion schemes used for cooperative spectrum sensing affect the detection probabilities of the primary users and the throughput of the secondary users. Therefore, joint optimization of the sensing time and the cooperative fusion scheme has been studied before in terms of sensing-throughput tradeoff design. In this paper, different from the previous studies, we consider the case that each secondary user may have different detection signalto- noise ratio (SNR), and requires different threshold for energy detection. Weightings are used to weigh the decisions from the secondary users before combining. A new algorithm is proposed to compute the thresholds for the secondary users and the optimal weightings for the decisions are shown. Computer simulations are presented to show the performance of the proposed algorithm.
AB - In cognitive radio networks, both the sensing time and the fusion schemes used for cooperative spectrum sensing affect the detection probabilities of the primary users and the throughput of the secondary users. Therefore, joint optimization of the sensing time and the cooperative fusion scheme has been studied before in terms of sensing-throughput tradeoff design. In this paper, different from the previous studies, we consider the case that each secondary user may have different detection signalto- noise ratio (SNR), and requires different threshold for energy detection. Weightings are used to weigh the decisions from the secondary users before combining. A new algorithm is proposed to compute the thresholds for the secondary users and the optimal weightings for the decisions are shown. Computer simulations are presented to show the performance of the proposed algorithm.
UR - http://www.scopus.com/inward/record.url?scp=77954917639&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=77954917639&partnerID=8YFLogxK
U2 - 10.1109/VETECS.2010.5494011
DO - 10.1109/VETECS.2010.5494011
M3 - Conference contribution
AN - SCOPUS:77954917639
SN - 9781424425198
T3 - IEEE Vehicular Technology Conference
BT - 2010 IEEE 71st Vehicular Technology
T2 - 2010 IEEE 71st Vehicular Technology Conference, VTC 2010-Spring
Y2 - 16 May 2010 through 19 May 2010
ER -