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An Efficient Spectrum Sensing Technique for Wireless Energy Harvesting Systems  

Hwang, Yu Min (광운대학교 전파공학과 소속 유비쿼터스 통신 연구실)
Shin, Yoan (숭실대학교 정보통신전파공학부 소속 통신및정보처리 연구실)
Kim, Dong In (성균관대학교 정보통신공학부 소속 무선통신 연구실)
Kim, Jin Young (광운대학교 전파공학과 소속 유비쿼터스 통신 연구실)
Publication Information
Journal of Satellite, Information and Communications / v.12, no.4, 2017 , pp. 141-145 More about this Journal
Abstract
Spectrum sensing is a critical functionality of Cognitive Radio(CR) systems and the CR systems can be applied to RF energy harvesting systems to improve an energy harvesting rate. There are number of spectrum sensing techniques. One of techniques is energy detection. Energy detection is the simplest detection method and is the most commonly used. But, energy detection has a hidden terminal problem in real wireless communication, because of secondary user (SU) can be affected by frequency fading and shadowing. Cooperative spectrum sensing can solve this problem using spatial diversity of SUs. But it has a problem of increasing data by processing multiple secondary. So, we propose the system model using adaptive spectrum sensing algorithm and system model is simulated. This algorithm chooses sensing method between single energy sensing and cooperative energy according to the received signal's Signal to Noise Ratio (SNR) from Primary User (PU). The simulation result shows that adaptive spectrum sensing has an efficiency and improvement in CR systems.
Keywords
Cognitive Radio (CR); Adaptive Spectrum Sensing; Energy Detection; Cooperative Sensing; RF energy harvesting;
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  • Reference
1 J. Mitola, Cognitive radio: An integrated agent architecture for software defined radio, Royal Inst. Technol. (KTH), 2003.
2 Working Group on Wireless Regional Area Networks, IEEE Std. 802.22.
3 C. Cordeiro, K. Challapali, D. Birru, "IEEE 802.22: An introduction to the first wireless standard based on cognitive radios", Journal of communications, vol. 1, no. 1, Apr. 2006.
4 J. Mitola, "Special issue on software radio" in IEEE Commun. Mag., May 1995.
5 W. Zhang, R. K. Mallik, K. B. Letaief, "Cooperative spectrum sensing optimization in cognitive radio networks", Proc. IEEE ICC, pp. 3411-3415, 2008-May-1923.
6 D. Cabric, S. M. Mishra, R. W. Brodersen, "Implementation issues in spectrum sensing for cognitive radios", Proc. Asilomar Conf. Signals Syst. Comput., vol. 1, pp. 772-776, Nov. 2004.