TY - GEN
T1 - Cooperative diversity of spectrum sensing in cognitive radio networks
AU - Duan, Dongliang
AU - Yang, Liuqing
AU - Principe, Jose C.
PY - 2009
Y1 - 2009
N2 - Spectrum sensing is a critical issue in cognitive radio networks. Cooperation among the secondary users is utilized to improve the performance of spectrum sensing. In this paper, we quantify the gain of cooperation in spectrum sensing by introducing the concept of diversity order. With different system performance metrics, we introduce different diversity quantities. We analyze the single-user sensing and the multi-user sensing with soft and hard information fusion strategies using the diversity quantities as our figure of merit. In particular, we discuss the selection of threshold in each sensing scheme with respect to the diversity performance and obtain the quantitative relationship among the diversity performance, threshold, and the number of cooperative users. We also observe and quantify the tradeoff between false alarm and missed detection performance in all spectrum sensing schemes.
AB - Spectrum sensing is a critical issue in cognitive radio networks. Cooperation among the secondary users is utilized to improve the performance of spectrum sensing. In this paper, we quantify the gain of cooperation in spectrum sensing by introducing the concept of diversity order. With different system performance metrics, we introduce different diversity quantities. We analyze the single-user sensing and the multi-user sensing with soft and hard information fusion strategies using the diversity quantities as our figure of merit. In particular, we discuss the selection of threshold in each sensing scheme with respect to the diversity performance and obtain the quantitative relationship among the diversity performance, threshold, and the number of cooperative users. We also observe and quantify the tradeoff between false alarm and missed detection performance in all spectrum sensing schemes.
UR - http://www.scopus.com/inward/record.url?scp=70349189775&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=70349189775&partnerID=8YFLogxK
U2 - 10.1109/WCNC.2009.4917643
DO - 10.1109/WCNC.2009.4917643
M3 - Conference contribution
AN - SCOPUS:70349189775
SN - 9781424429486
T3 - IEEE Wireless Communications and Networking Conference, WCNC
BT - 2009 IEEE Wireless Communications and Networking Conference, WCNC 2009 - Proceedings
T2 - 2009 IEEE Wireless Communications and Networking Conference, WCNC 2009
Y2 - 5 April 2009 through 8 April 2009
ER -