一种应用于超高频射频识别的密勒解码器  

A Miller Decoder Applied in UHF RFID

作　　者：肖自铧[1] 马琪[1] 顾伟[2] 潘剑侠[1] 吕炳赟[1] 

机构地区：[1]杭州电子科技大学微电子CAD研究所,浙江杭州310018 [2]UT斯达康公司宽带事业部,浙江杭州310050

出　　处：《杭州电子科技大学学报（自然科学版）》2008年第6期13-16,共4页Journal of Hangzhou Dianzi University：Natural Sciences

基　　金：浙江省重大科技专项重点项目(C11106)

摘　　要：密勒编码数据含有丰富的时钟信息且具有较好的抗干扰能力,广泛应用于射频识别通信中,因此密勒调制副载波序列解码技术是射频通信领域的重点问题之一,需要对该技术进行详细研究并实现工程化。该文在分析密勒调制副载波技术的基础上,设计了一种密勒解码器对来自标签的突发数据帧进行帧起始检测、密勒解码和帧结尾检测,解码器用硬件描述语言实现。FPGA硬件测试结果表明,该解码器能实时地对密勒调制副载波序列进行正确解码,符合ISO/IEC 18000-6C协议要求。Because Miller encoded datum hold efficient clock information and have good ability of anti-jamming, Miller coding is extensively applied in the area of RFID. So the technique of decoding for Miller - modulated sub - cartier is one of the most important problems in the area of RFID, and research on it is essential. Based on analysis of Miller - modulated sub - cartier technique, this paper designs a Miller decoder to deal with the burst data frame from tags, including preamble detecting, Miller decoding and frame - end detecting. The decoder is implemented by HDL. The results of simulation and FPGA testing indicate that this decoder can timely decode Miller - modulated sub - cartier sequences correctly, and accords with the ISO/IEC 18000 - 6C protocol.

关 键 词：射频识别 密勒解码 副载波 

分 类 号：TN402[电子电信—微电子学与固体电子学]