一种超高频RFID系统的编译码模块设计  

Design of Decoding and Encoding Module for UHF RFID

作　　者：赵晶[1] 尹新[1] 何怡刚[1] 齐绍忠[1] 侯周国[1] 李兵[1] 

机构地区：[1]湖南大学电气与信息工程学院,湖南长沙410082

出　　处：《计算机测量与控制》2009年第4期767-769,共3页Computer Measurement &Control

基　　金：国家自然科学基金项目(50677014;60876022);高校博士点基金(20060532002);国家863计划(2006AA04A104);湖南省科技计划项目(06JJ2024;2008Gk2022)资助

摘　　要：为了提高超高频RFID系统的可靠性,促进超高频RFID系统的推广和应用,需要对其结构进行分析和改进;介绍了超高频RFID系统的原理和结构,深入分析了读写器和标签的数字基带部分中编译码模块,提出一种基于卷积码和CRC码的编译码模块设计方案,分析了此方案相对于传统RFID编译码模块所具有的优点;具体阐述了模块中卷积编码电路和Viterbi(维特比)译码电路的原理和设计,进行了基于LabVIEW平台的仿真验证;但只直观上定性的分析了方案的优越性,还需进一步研究工作,从实验数据上得出此方案提高读卡率的程度。In order to improve the reliability of UHF RFID and promote the scale of utilization, the analysis and amelioration of the structure is needed. The theory of UHF RFID is introduced, the decoding and encoding module that belongs to digital part of reader and tag is deep analyzed, a design of encoding and decoding module based on convolution code and CRC code is proposed, and some advantages of this scheme compared to traditional design are analyzed. The design of both convolution encoding circuit and Viterbi decoding circuit is specifically expatiated, and the simulation realization of this design based on LabVIEW soft platform is implemented. But only the qualitative analysis is made, and more research needs to be done so that the degree of the advantage can be measured from experiment data.

关 键 词：超高频RFID 编译码模块 卷积码 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]