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Cyclostationary Spectrum Sensing in Cognitive Radios at Low SNR Regimes

Cyclostationary Spectrum Sensing in Cognitive Radios at Low SNR Regimes

Mahsa Derakhshani, Tho Le-Ngoc, Masoumeh Nasiri-Kenari
Copyright: © 2015 |Pages: 31
ISBN13: 9781466665712|ISBN10: 1466665718|EISBN13: 9781466665729
DOI: 10.4018/978-1-4666-6571-2.ch005
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MLA

Derakhshani, Mahsa, et al. "Cyclostationary Spectrum Sensing in Cognitive Radios at Low SNR Regimes." Handbook of Research on Software-Defined and Cognitive Radio Technologies for Dynamic Spectrum Management, edited by Naima Kaabouch and Wen-Chen Hu, IGI Global, 2015, pp. 122-152. https://doi.org/10.4018/978-1-4666-6571-2.ch005

APA

Derakhshani, M., Le-Ngoc, T., & Nasiri-Kenari, M. (2015). Cyclostationary Spectrum Sensing in Cognitive Radios at Low SNR Regimes. In N. Kaabouch & W. Hu (Eds.), Handbook of Research on Software-Defined and Cognitive Radio Technologies for Dynamic Spectrum Management (pp. 122-152). IGI Global. https://doi.org/10.4018/978-1-4666-6571-2.ch005

Chicago

Derakhshani, Mahsa, Tho Le-Ngoc, and Masoumeh Nasiri-Kenari. "Cyclostationary Spectrum Sensing in Cognitive Radios at Low SNR Regimes." In Handbook of Research on Software-Defined and Cognitive Radio Technologies for Dynamic Spectrum Management, edited by Naima Kaabouch and Wen-Chen Hu, 122-152. Hershey, PA: IGI Global, 2015. https://doi.org/10.4018/978-1-4666-6571-2.ch005

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Abstract

Spectrum sensing is one of the key elements in the establishment of cognitive radio. One of the most effective approaches for spectrum sensing is cyclostationary feature detection. Since modulated signals can be modeled as cyclostationary random signals, this feature can be used to recognize the cyclostationary modulated signal in a background of stationary noise even at low SNR regimes. This chapter reviews non-cooperative cyclostationary sensing approaches and reports recent advances in cooperative cyclostationary sensing algorithms. New results for cooperative cyclostationary spectrum sensing are then presented, which ensure better performance as well as faster and simpler operation. In the proposed schemes, each Secondary User (SU) performs Single-Cycle (SC) cyclostationary detection for fast and simple implementation, while collaboration between SUs in final decision on the presence or absence of the PU is explored to improve its performance. Furthermore, this chapter presents another look at the performance evaluation of cyclostationary detectors in terms of deflection coefficients.

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