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Distributed allocation of the sensing times for cooperative spectrum sensing
2012 International Conference on Computing, Networking and Communications (ICNC), 2012In cognitive radio systems, the sparse assigned frequency bands are opened to secondary users. We consider the sensing of the frequency spectrum for cognitive radios, based on energy detection. It has been shown that the sensing reliability can be improved by using several cooperating cognitive radios that exchange their individual sensing information ...
Olivier van den Biggelaar +3 more
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A Random Censoring Scheme for Cooperative Spectrum Sensing
2011 IEEE Global Telecommunications Conference - GLOBECOM 2011, 2011In this paper, we develop a new scheme to effectively detect the primary signal in a cognitive radio (CR) network. We propose a packet transmission scheme with random censoring. The proposed scheme, known as Censored with Probability Fusion Method~(CPFM), controls the information exchange in cooperative spectrum sensing so as to improve the detection ...
Yao, JW, Leung, KC, Li, VOK
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Research on Cooperative Spectrum Sensing Algorithm
2017The rapid development of wireless communication brings us convenience as well as scarcity of radio spectrum resources. Hence, scientists proposed cognitive radio technology to solve this problem. Spectrum sensing is a pivotal technology protecting primary users from interference of secondary users in cognitive radio, and can be achieved by different ...
Yu Gao +4 more
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Cooperative Spectrum Sensing Technique
2007 International Conference on Wireless Communications, Networking and Mobile Computing, 2007Cognitive Radios (CRs), which sense the spectrum and implement opportunistic sharing when no licensed user is found to use it, are able to improve the efficiency of spectrum. Spectrum sensing must be firstly solved in CRs. Cooperative sensing can make good use of network resources, obtain higher gain and make the network steadier. In this paper we give
Yu Zhang, Wen-Dong Yang, Yue-Ming Cai
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Cooperative Spectrum Sensing with Feedback
2009 5th International Conference on Wireless Communications, Networking and Mobile Computing, 2009One of the main objective of spectrum sensing is to detect spectrum opportunity quickly and accurately. Both of the two aspects can be improved by hardware upgrading and software optimization. In this paper, we concentrate on sensing accuracy, which, differs from previous solutions, will be enhanced by modification of network topology.
Ping Zhu, Jinglong Li, Xufa Wang
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Cooperative Spectrum Sensing for Dynamic Spectrum Access
2009 WRI International Conference on Communications and Mobile Computing, 2009In cognitive networks, cooperative spectrum sensing is employed to detect the presence of primary user quickly. In this paper, we study the sensing performance of a cognitive user U1 by allowing another cognitive user U2 to act as its relay. We vary the scaling factors (used by the relay U2 to amplify its received signal) of the unconstrained scheme ...
Yunxue Liu +5 more
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Deep Cooperative Sensing: Cooperative Spectrum Sensing Based on Convolutional Neural Networks
IEEE Transactions on Vehicular Technology, 2019In this paper, we investigate cooperative spectrum sensing (CSS) in a cognitive radio network (CRN) where multiple secondary users (SUs) cooperate in order to detect a primary user, which possibly occupies multiple bands simultaneously. Deep cooperative sensing (DCS), which constitutes the first CSS framework based on a convolutional neural network ...
Woongsup Lee, Minhoe Kim, Dong-Ho Cho
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Research on Adaptive Cooperative Spectrum Sensing
2016Aiming at the fact that the traditional single threshold energy detection in cognitive radio is likely to misjudge situations and then lead to the shortage of missing the spectrum access opportunities due to the low signal to noise ratio caused by single threshold, this paper proposes adaptive cooperative spectrum sensing method based on double ...
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Wavelet denoising in cooperative and NonCooperative spectrum sensing
ICT 2013, 2013Cognitive Radio has become an effective solution for the scarcity and the inefficient use of the spectrum. The performance of the cognitive radio (CR) system depends however on how well it can maximize the usage of the free bands without causing interference to primary users.
Hussein Kobeissi +2 more
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Quantized cooperative spectrum sensing for Cognitive Radio
2013 IEEE 24th Annual International Symposium on Personal, Indoor, and Mobile Radio Communications (PIMRC), 2013Cognitive Radio (CR) is proposed to maximize spectrum utilization. When the licensed user is not using the spectrum, CR will then use it to communicate among each other. Hence, spectrum sensing, a procedure to observe primary user's existence, is important to CR.
Warit Prawatmuang, Daniel K. C. So
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