A Novel Cooperative Spectrum Sensing Scheme Based on Fuzzy Integral Theory in Cognitive Radio Networks

As the first step in the basic cognitive cycle, spectrum sensing is a vital part of cognitive radio to become reliant and swift. And due to excellent detection performance, cooperative spectrum sensing has been applied more and more frequently. However, in cooperative spectrum sensing, the detection results of the secondary users (SUs) have a great degree of uncertainty. In this paper, in order to reduce the impact of the uncertainty problem and improve the performance of detection, we provide a novel cooperative spectrum sensing scheme based on fuzzy integral theory, in which the reliability of local spectrum sensing is taken into account in the final decision whether primary user (PU) is present or not and the optimization method is used to find the optimal fuzzy measures. Moreover, simulation results show the efficiency of the proposed scheme.]

[1]  Ranjan K. Mallik,et al.  Cooperative Spectrum Sensing Optimization in Cognitive Radio Networks , 2008, 2008 IEEE International Conference on Communications.

[2]  Wei Zhang,et al.  Cooperative Spectrum Sensing for Cognitive Radios under Bandwidth Constraints , 2007, 2007 IEEE Wireless Communications and Networking Conference.

[3]  Simon Haykin,et al.  Cognitive radio: brain-empowered wireless communications , 2005, IEEE Journal on Selected Areas in Communications.

[4]  Mohamed-Slim Alouini,et al.  On the Energy Detection of Unknown Signals Over Fading Channels , 2007, IEEE Transactions on Communications.

[5]  M. Sugeno,et al.  Fuzzy Measures and Integrals: Theory and Applications , 2000 .

[6]  Jun Wang,et al.  A Distributed Spectrum Sensing Scheme Based on Credibility and Evidence Theory in Cognitive Radio Context , 2006, PIMRC.

[7]  A. Ghasemi,et al.  Collaborative spectrum sensing for opportunistic access in fading environments , 2005, First IEEE International Symposium on New Frontiers in Dynamic Spectrum Access Networks, 2005. DySPAN 2005..

[8]  Anant Sahai,et al.  Cooperative Sensing among Cognitive Radios , 2006, 2006 IEEE International Conference on Communications.

[9]  Youyun Xu,et al.  A fuzzy collaborative spectrum sensing scheme in cognitive radio , 2007, 2007 International Symposium on Intelligent Signal Processing and Communication Systems.

[10]  Joseph Mitola,et al.  Cognitive radio: making software radios more personal , 1999, IEEE Wirel. Commun..

[11]  Niels Kang Hoven.  On the feasibility of cognitive radio , 2005 .

[12]  J. I. Mararm,et al.  Energy Detection of Unknown Deterministic Signals , 2022 .