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Reputation-based collaborative spectrum sensing scheme in cognitive radio networks

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Abstract

Collaborative spectrum sensing is proposed to improve the detection performance in cognitive radio (CR) networks. However, most of the current collaborative sensing schemes are vulnerable to the interference of the malicious secondary users (SUs). In this paper we propose a reputation-based collaborative spectrum sensing scheme to improve the security of cooperative sensing by mitigating the impacts of misbehaviors. The fusion center calculates the reputation rating of each SU according to their history reports to weight their sensing results in the proposed scheme. We analyze and evaluate the performance of the proposed scheme and its advantages over previous schemes in expansibility and integrity. Simulation results show that the proposed scheme can minimize the harmful influence from malicious SUs.

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Correspondence to Shi-kang Zhao  (赵士康).

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Foundation item: the National Natural Science Foundation of China (No. 60802058) and the SMC-“Chen-Xing” Young Scholar Foundation of Shanghai Jiaotong University

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Zhao, Sk., He, D., Li, Wh. et al. Reputation-based collaborative spectrum sensing scheme in cognitive radio networks. J. Shanghai Jiaotong Univ. (Sci.) 16, 641–647 (2011). https://doi.org/10.1007/s12204-011-1204-6

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  • DOI: https://doi.org/10.1007/s12204-011-1204-6

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