Near-Optimum Nonparametric Combination Scheme for Cyclostationarity-Based Spectrum-Sensing Method

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• 作者：Wang Jun ; Huang Jiwei ; Chen Riqing ; Lin Ruiquan
• 关键词：Cognitive radio ; Spectrum sensing ; Cyclostationarity ; Combination scheme ; Nonparametric
• 刊名：Circuits, Systems, and Signal Processing
• 出版年：2017
• 出版时间：February 2017
• 年：2017
• 卷：36
• 期：2
• 页码：867-878
• 全文大小：
• 刊物类别：Engineering
• 刊物主题：Circuits and Systems; Electrical Engineering; Signal,Image and Speech Processing; Electronics and Microelectronics, Instrumentation;
• 出版者：Springer US
• ISSN：1531-5878
• 卷排序：36

文摘

Spectrum sensing is the key step of cognitive radio. Cyclostationarity, which mostly comes from carrier frequency, modulation, symbol or chip rate and channel coding, is often considered as a feature to extract man-made signal from the natural noise in spectrum sensing. This paper proposes a novel cyclostationarity-based combination scheme named near-optimum nonparametric combination scheme (NONCS). NONCS is nonparametric so that it has nothing to do with noise power, channel gain and data distribution. NONCS is almost based on the extremum seeking theory so that it is near optimum. Simulation experiments are provided to show the validity and the superiority of the proposed NONCS method.