超高频射频识别改进型前向数据编码设计及实现  

Design and Implementation of Modified Forward Data Coding for UHF RFID

作　　者：靳钊[1] 刘策[1,2] 乔丽萍[3] 刘立东[1] 郭晨[1] 高涛[1] 

机构地区：[1]长安大学信息工程学院,西安710064 [2]休斯敦大学 [3]西藏民族学院信息工程学院,陕西咸阳712082

出　　处：《电子器件》2013年第5期639-642,共4页Chinese Journal of Electron Devices

基　　金：国家自然科学基金项目(51277012;61162025);中央高校基本科研业务费专项资金项目(2013G1241120;CHD2011ZD004;2013G1241114;2013G1241107);陕西省科技攻关计划项目(2011K06-21)

摘　　要：针对超高频射频识别前向数据链路,提出了一种改进型曼彻斯特码,分别对数据"0"、奇数序"1"和偶数序"1"实行区别编码。该方案使前向载波携带更多能量,压缩低电平持续时间,同时降低解码代价。仿真结果显示提出的MMC与ISO/IEC18000-6B的Manchester码、ISO/IEC 18000-6C的PIE码相比,具有最低的峰均比和较低的误码率。采用该编码方案的芯片经TSMC 0.18μm CMOS mixed signal工艺流片,实测结果表明,使用该芯片的射频识别标签最远读距离达6.8 m,写距离至3 m。A modified Manchester code（ MMC） is presented for the UFH RFID forward link data,in which the data＂0＂,odd order＂1＂and even order＂1＂are differently coded. More energy included in the forward carrier,shorter low level duration and lower cost for decoding are achieved in this method. Compared with Manchester code in ISO / IEC18000- 6B and PIE in ISO / IEC 18000- 6C,the simulation results show that the proposed MMC has the smallest Peak Average Ratio and lower Bit Error Rate. The chip including MMC has been fabricated using TSMC 0. 18 μm CMOS mixed signal process,measurement results show that the tag read range can achieve 6. 8 m while the write range is 3 m.

关 键 词：射频识别 曼彻斯特码 前向链路 误码率 

分 类 号：TN407[电子电信—微电子学与固体电子学]