{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,10]],"date-time":"2026-06-10T16:31:38Z","timestamp":1781109098484,"version":"3.54.1"},"reference-count":19,"publisher":"IGI Global Scientific Publishing","issue":"4","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2017,10,1]]},"abstract":"<p>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.<\/p>","DOI":"10.4018\/ijitn.2017100105","type":"journal-article","created":{"date-parts":[[2017,8,15]],"date-time":"2017-08-15T12:28:58Z","timestamp":1502800138000},"page":"37-48","source":"Crossref","is-referenced-by-count":3,"title":["Implementation of Multi-Hop Cognitive Radio Testbed using Raspberry Pi and USRP"],"prefix":"10.4018","volume":"9","author":[{"given":"Hyun Jae","family":"Park","sequence":"first","affiliation":[{"name":"Department of Computer Engineering, Ajou University, Suwon, South Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Gyu-min","family":"Lee","sequence":"additional","affiliation":[{"name":"Department of Computer Engineering, Ajou University, Suwon, South Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Seung-Hun","family":"Shin","sequence":"additional","affiliation":[{"name":"University College, Ajou University, Suwon, South Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Byeong-hee","family":"Roh","sequence":"additional","affiliation":[{"name":"Department of Computer Engineering, Ajou University, Suwon, South Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ji Myeong","family":"Oh","sequence":"additional","affiliation":[{"name":"LIG Nex1, Co. Ltd., Seongnam, South Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"2432","reference":[{"key":"IJITN.2017100105-0","doi-asserted-by":"publisher","DOI":"10.1109\/GIIS.2013.6684374"},{"key":"IJITN.2017100105-1","doi-asserted-by":"publisher","DOI":"10.1109\/JCN.2009.6391392"},{"key":"IJITN.2017100105-2","unstructured":"Elsayed, M. H., El-Sherif, A. A., & Mohamed, A. (2014). DDSAT: Distributed dynamic spectrum access protocol implementation using gnuradio and usrp. arXiv preprint arXiv:1412.4999"},{"key":"IJITN.2017100105-3","doi-asserted-by":"crossref","unstructured":"Jain, A., Sharma, V., & Amrutur, B. (2014, February). Soft real time implementation of a Cognitive Radio testbed for frequency hopping primary satisfying QoS requirements. 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