太原理工大学学报2025，Vol.56Issue(6)：1087-1093,7.DOI:10.16355/j.tyut.1007-9432.20230408
基于频移的速率自适应方法
Rate Adaptation Based on Frequency Shift
摘要
Abstract
[Purposes]In recent years,there has been a growing interest in backscatter networks.Backscatter nodes such as radio frequency identification tags can absorb electromagnetic waves in envi-ronment as energy and can be deployed on a large scale within the environment.These advantages make them able to communicate with each other in the complex environment.However,with factors such as multipath effect and channel fading,inproper selection of information transmission rate may-lead to goodput decrease.Therefore,to improve the throughput of backscatter network,rate adapta-tion is necessary.However,there are some problems such as poor timeliness of the trigger and poor universality of the rate selection scheme in the process of rate adaptive research in the past few years.To address the above issues,in this paper,an algorithm called rate adaptation based on frequency shift(RAFS)is proposed.[Methods]First,the trigger was designed according to frequency shift vola-tility.After that,the trigger based on commercial readers was implemented and a rate switching scheme was designed according to the time difference of two packets.[Results]According to the re-sult of experiment,this algorithm has different degrees of system throughput improvements in both stationary and moving environments of tags,especially in dynamic environments.Overall,the overall system throughput is improved by about 15%compared with that using FM0 coding only.关键词
射频识别/反向散射网络/速率自适应/信号频移Key words
radio frequency identification/backscatter network/rate adaptation/signal frequency shift分类
信息技术与安全科学引用本文复制引用
张潼,李灯熬,赵菊敏..基于频移的速率自适应方法[J].太原理工大学学报,2025,56(6):1087-1093,7.基金项目
国家自然科学基金面上项目(61972273) （61972273）
国家重大科研仪器研制项目(62027819) （62027819）
山西省重点研发计划(202102020101006) （202102020101006）
山西省关键核心技术和共性技术研发攻关专项项目(2020XXX007) （2020XXX007）
山西省科技成果转化引导专项项目(202204021301041) （202204021301041）
山西省重点研发计划(202102020101001) （202102020101001）
山西省重点研发项目(202102020101004) （202102020101004）
国家自然科学基金青年科学基金项目(62102280) （62102280）
山西省基础研究计划项目(20210302124167) （20210302124167）
