TY - GEN
T1 - A novel cooperative spectrum sensing scheme based on clustering and softened hard combination
AU - Duan, Jiaqi
AU - Li, Yong
PY - 2010
Y1 - 2010
N2 - In cognitive radio systems, secondary users can be coordinated to perform cooperative spectrum sensing so as to detect the primary user more accurately. However, the conventional cooperative scheme does not explore the received energy information sufficiently. Thus, in this paper, we investigate the softened two-bit hard combination and clustering cooperative sensing schemes. Encouraged by the performance gain of soft combination, we propose a novel cooperative spectrum sensing scheme by combing the merits of these two schemes. Moreover, for some practical environments, a modification based on SNR estimation to the proposed scheme is made. Numerical results show that the sensing performance of the proposed scheme is improved significantly as opposed to other schemes. And it also achieves a good tradeoff between performance and complexity.
AB - In cognitive radio systems, secondary users can be coordinated to perform cooperative spectrum sensing so as to detect the primary user more accurately. However, the conventional cooperative scheme does not explore the received energy information sufficiently. Thus, in this paper, we investigate the softened two-bit hard combination and clustering cooperative sensing schemes. Encouraged by the performance gain of soft combination, we propose a novel cooperative spectrum sensing scheme by combing the merits of these two schemes. Moreover, for some practical environments, a modification based on SNR estimation to the proposed scheme is made. Numerical results show that the sensing performance of the proposed scheme is improved significantly as opposed to other schemes. And it also achieves a good tradeoff between performance and complexity.
KW - Clustering
KW - Cognitive radio
KW - Cooperative spectrum sensing
KW - SNR estimation
KW - Softened hard combination
UR - http://www.scopus.com/inward/record.url?scp=77957687910&partnerID=8YFLogxK
U2 - 10.1109/WCINS.2010.5541738
DO - 10.1109/WCINS.2010.5541738
M3 - 会议稿件
AN - SCOPUS:77957687910
SN - 9781424458516
T3 - Proceedings - 2010 IEEE International Conference on Wireless Communications, Networking and Information Security, WCNIS 2010
SP - 183
EP - 187
BT - Proceedings - 2010 IEEE International Conference on Wireless Communications, Networking and Information Security, WCNIS 2010
T2 - 2010 IEEE International Conference on Wireless Communications, Networking and Information Security, WCNIS 2010
Y2 - 25 June 2010 through 27 June 2010
ER -