【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。更多还原

【Abstract】 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-carrier 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-carrier 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-carrier sequences correctly,and accords with the ISO/IEC 18000-6C protocol.更多还原