期刊
IEEE COMMUNICATIONS LETTERS
卷 13, 期 7, 页码 492-494出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LCOMM.2009.090043
关键词
Cognitive radio; cooperative spectrum sensing; data fusion; Dempter-Shafer theory of evidence; source reliability evaluation
资金
- Korean Government [KRF-2009-0063958]
- National Research Foundation of Korea [2009-0063958, 과C6B1616] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
This letter proposes an enhanced scheme for cooperative spectrum sensing which utilizes the signal to noise ratios to evaluate the degree of reliability of each local spectrum sensing terminal on a distributed Cognitive Radio network. The terminals' reliability weight is applied to adjust its sensing data more accuratly before making fusion by Dempter-Shafer theory of evidence. Simulation results show that significant improvement of the cooperative spectrum sensing gain is achieved by our scheme.
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