A fast spectrum sensing for CP-OFDM cognitive radio based on adaptive thresholding
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- 作者：Kamel Berbraa ; berbra.kamel@gmail.com" class="auth_mail" title="E-mail the corresponding author ; Mourad Barkatb ; mbarkat58@gmail.com" class="auth_mail" title="E-mail the corresponding author ; Fulvio Ginic ; f.gini@ing.unipi.it" class="auth_mail" title="E-mail the corresponding author ; Maria Grecoc ; m.greco@iet.unipi.it" class="auth_mail" title="E-mail the corresponding author ; Pietro Stincoc ; pietro.stinco@for.unipi.it" class="auth_mail" title="E-mail the corresponding author
- 关键词：Cognitive radio (CR) ; Spectrum sensing (SS) ; Energy detection ; CFAR ; Adaptive threshold ; Cyclostationarity (CS) ; OFDM
- 刊名：Signal Processing
- 出版年：2016
- 出版时间：November 2016
- 年：2016
- 卷：128
- 期：Complete
- 页码：252-261
- 全文大小：1175 K
文摘
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A spectrum sensing (SS) method for detecting unsynchronized OFDM signals in additive white Gaussian noise (AWGN) is proposed.
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An adaptive CFAR spectrum sensing algorithm is considered based on the generalized likelihood ratio test (GLRT).
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The SS detector has a capability of adaption to noise fluctuations by maintaining a desired probability of false alarm constant.
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The proposed detector can be considered as a good candidate for practical implementation of SS for OFDM signals.