{"title":"Wirelessly Retrieving Phase and RSSI of UHF RFID using Commodity SDR Sniffer","authors":"Shuai Yang, R. Penty, M. Crisp","doi":"10.1109/RFID-TA53372.2021.9617255","DOIUrl":null,"url":null,"abstract":"This paper demonstrates the retrieval of relative phase and RSSI from UHF RFID tag responses using a noncoherent low-cost commodity software-defined radio sniffer. Two common scenarios have been considered: (i) when the tag is stationary and (2) when the tag is moving. The retrieved results have been verified by a commercial RFID reader. Overall, the standard deviations in phase and RSSI estimations in the two cases are up to 8.1° and 0.61 dB respectively. In addition, the phase ambiguity has been increased to 360° by taking the sign of the tag data into account. The approach will enable a range of SIMO approaches to tag localisation using existing RFID readers and multiple sniffers.","PeriodicalId":212607,"journal":{"name":"2021 IEEE International Conference on RFID Technology and Applications (RFID-TA)","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"2021-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"2","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2021 IEEE International Conference on RFID Technology and Applications (RFID-TA)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/RFID-TA53372.2021.9617255","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 2
Abstract
This paper demonstrates the retrieval of relative phase and RSSI from UHF RFID tag responses using a noncoherent low-cost commodity software-defined radio sniffer. Two common scenarios have been considered: (i) when the tag is stationary and (2) when the tag is moving. The retrieved results have been verified by a commercial RFID reader. Overall, the standard deviations in phase and RSSI estimations in the two cases are up to 8.1° and 0.61 dB respectively. In addition, the phase ambiguity has been increased to 360° by taking the sign of the tag data into account. The approach will enable a range of SIMO approaches to tag localisation using existing RFID readers and multiple sniffers.