摘要
针对在EPC C1G2协议下的UHF RFID系统数据编码方式的实现进行研究。对于该系统前向链路PIE码的编码,提出了一种利用读写器的MPU调用软件进行编码的方法。再进行信号调制。该系统反向链路采用FM0码或采用Miller码调制副载波。提出了一种新的FM0码的编码方法,并在Simulink平台中使用数字逻辑器件和触发器搭建了其仿真模型且进行了仿真实现。同样运用该思路实现了Miller码的编码仿真。另外还实现了含有多个副载波周期的Miller码编码。这些解决方案有利于提高系统性能。
Based on EPC C1G2 protocol,this paper discusses the realization of data encoding pattern in UHF RFID system.A method in using MPU calls software to encode PIE in the forward link of the system is proposed,and then the signal modulation is done.The reverse link of the system,through FM0 code or Miller code,modulate the subcarrier.A encoding method of FM0 is also proposed,its simulation model is constructed with digital logic devices and flip-flops in Simulink platform and the encoding simulation for Miller with the new method is realized,including the encoding simulation of Miller including a few periods of subcarrier.These solutions are in favor of improving the system performance.
出处
《通信技术》
2011年第1期24-26,共3页
Communications Technology
