Implementation of Multi-Hop Cognitive Radio Testbed using Raspberry Pi and USRP

Hyun Jae Park, Gyu-min Lee, Seung-Hun Shin, Byeong-hee Roh and Ji Myeong Oh
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Hyun Jae Park: Department of Computer Engineering, Ajou University, Suwon, South Korea
Gyu-min Lee: Department of Computer Engineering, Ajou University, Suwon, South Korea
Seung-Hun Shin: University College, Ajou University, Suwon, South Korea
Byeong-hee Roh: Department of Computer Engineering, Ajou University, Suwon, South Korea
Ji Myeong Oh: LIG Nex1, Co. Ltd., Seongnam, South Korea

International Journal of Interdisciplinary Telecommunications and Networking (IJITN), 2017, vol. 9, issue 4, 37-48

Abstract: The increased usage of wireless communication has created a wireless frequency shortage problem. Cognitive Radio (CR) has attracted public attention, as one of the solutions that can resolve this issue. In this paper, the authors built an actual CR system testbed using the SDR (Software Defined Radio) platform, USRP (Universal Software Radio Peripheral) board, the SDR development toolkit, GNU Radio, and Raspberry Pi3, which is a single board computer. They configured Secondary User (SU)s with Raspberry Pi3 for straightforward and portable test environment. The authors' testbed performs spectrum sensing based on energy detection and determines whether the channel is occupied or not. Experimental results not only show performance but also provide their testbed that works well in multi-hop environments.

Date: 2017
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