Volume 3, Issue 3 (9-2011)                   IJICTR 2011, 3(3): 1-10 | Back to browse issues page

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Arezumand H, Azmi P, Sadeghi H. A Low-Complexity Cyclostationary-Based Detection Method for Cooperative Spectrum Sensing in Cognitive Radio Networks . IJICTR. 2011; 3 (3) :1-10
URL: http://ijict.itrc.ac.ir/article-1-204-en.html
1- Department of Electrical & Computer Engineering Tarbiat Modares University Tehran, Iran.
Abstract:   (2402 Views)

Fast reliable spectrum sensing (SS) is a crucial problem in the cognitive radio systems. To address this issue, cyclostationarity-based detection methods, which are generally more complex but more reliable than energy detection methods, have been proposed. This paper presents a new method to detect the presence of the second-order cyclostationarity in the OFDM-based primary user (PU) signals. The proposed method has a low computational complexity, while it presents a performance close to the well-known GLRT-based Dandawaté-Giannakis's method. Moreover, since the proposed low-complexity method is robust against the noise uncertainty, it can be a good alternative to the energy detection method. We further propose some cooperative spectrum sensing methods to improve the detection performance. Extensive simulation results confirm the superiority of the proposed schemes.

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Type of Study: Research | Subject: Information Technology

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