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Spectrum sensing is a primary requirement in cognitive radio systems. In order to improve the spectrum efficiency and facilitate the unlicensed mobile users to use the empty licensed radio frequency band of the electromagnetic spectrum, the spectrum sensing techniques should be more accurate and reliable. In this paper, the disadvantages of basic transmitter detection techniques are discussed, and...
Spectrum sensing plays an important role in cognitive radio (CR) system which is able to detect the primary users (PU) and avoid secondary users' (SU) interfering with them. However, the traditional sensing schemes such as energy detection, cyclostationary feature detection and matched detection need know the prior knowledge which is practically hard to obtain. Meanwhile, considering the influence...
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