{"title":"Theoretical and Practical Evaluation of LoRa-Based Ranging Toward Accurate TDoA-Based LoRa Localization","authors":"Salma Elsherif;Karim Tarek;Phoebe Edward;Tallal Elshabrawy","doi":"10.1109/LCOMM.2025.3547036","DOIUrl":null,"url":null,"abstract":"Conventional Internet of Things (IoT) technologies such as RFID, Bluetooth, and Wi-Fi exhibit compromise between energy-efficiency and communication range. Long Range (LoRa) technology is pillared on guaranteeing battery lifetimes for up to ten years while promising reliable communication at the scale of ten kilometers. Such capabilities exhibit an exclusive potential of LoRa to proliferate a vast set of localization-based IoT use cases. This letter evaluates the theoretical and practical capabilities of LoRa-based distance ranging which is a fundamental constituent of Time Difference of Arrival (TDoA)-based localization. The letter first derives the theoretical Cramer-Rao Lower Bound (CRLB) for ranging of LoRa signals. A simulation model is then developed that incorporates practical reception aspects such as frequency offset estimation errors. The distance errors attained from simulations are compared against the theoretical bounds and the impact of frequency offsets is evaluated. Furthermore, an experimental Software Defined Radio (SDR) setup is devised for practical evaluation of distance ranging over a span of Signal-to-Noise Ratio (SNR) values.","PeriodicalId":13197,"journal":{"name":"IEEE Communications Letters","volume":"29 5","pages":"923-927"},"PeriodicalIF":3.7000,"publicationDate":"2025-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"IEEE Communications Letters","FirstCategoryId":"94","ListUrlMain":"https://ieeexplore.ieee.org/document/10908829/","RegionNum":3,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"TELECOMMUNICATIONS","Score":null,"Total":0}
引用次数: 0
Abstract
Conventional Internet of Things (IoT) technologies such as RFID, Bluetooth, and Wi-Fi exhibit compromise between energy-efficiency and communication range. Long Range (LoRa) technology is pillared on guaranteeing battery lifetimes for up to ten years while promising reliable communication at the scale of ten kilometers. Such capabilities exhibit an exclusive potential of LoRa to proliferate a vast set of localization-based IoT use cases. This letter evaluates the theoretical and practical capabilities of LoRa-based distance ranging which is a fundamental constituent of Time Difference of Arrival (TDoA)-based localization. The letter first derives the theoretical Cramer-Rao Lower Bound (CRLB) for ranging of LoRa signals. A simulation model is then developed that incorporates practical reception aspects such as frequency offset estimation errors. The distance errors attained from simulations are compared against the theoretical bounds and the impact of frequency offsets is evaluated. Furthermore, an experimental Software Defined Radio (SDR) setup is devised for practical evaluation of distance ranging over a span of Signal-to-Noise Ratio (SNR) values.
期刊介绍:
The IEEE Communications Letters publishes short papers in a rapid publication cycle on advances in the state-of-the-art of communication over different media and channels including wire, underground, waveguide, optical fiber, and storage channels. Both theoretical contributions (including new techniques, concepts, and analyses) and practical contributions (including system experiments and prototypes, and new applications) are encouraged. This journal focuses on the physical layer and the link layer of communication systems.