基于CDMA的RFID读写器关键技术分析  

Analysis on Key Technologies of RFID Reader Based on CDMA

作　　者：杜平[1] DU Ping(Guangdong Polytechnic of Science and Technology,Guangzhou 510640,China)

机构地区：[1]广东科学技术职业学院,广东广州510640

出　　处：《移动通信》2018年第9期80-83,共4页Mobile Communications

摘　　要：随着RFID技术的广泛应用,对其性能的要求也越来越高,标签之间的防冲突成为研究的热点和关键。阐述了基于CDMA的RFID技术特点,对读写器实现的关键技术进行了分析,着重阐述了移位M序列作为正交码的优势和读写器端采用相关运算解码多信道标签数据的实现方法,通过关键技术的分析,将码分多址复用技术(CDMA)应用到RFID系统中,可以实现多个标签同时应答,有效地降低标签碰撞,提高读取速率。With the wide application of RFID technology, the requirement for its performance is getting higher and higher. Anti-collision between tags has become a hot research topic and key. This paper describes the features of RFID technology based on CDMA and gives an analysis to the key technologies. The advantage of the shift m sequence family as orthogonal code and the realization methods of decoding the multi-channel tag data through the correlation algorithm by a reader are analyzed. By analyzing the key technologies, the application of code division multiple access（CDMA） technology in the RFID system can realize multiple tag simultaneous responses, effectively reducing the label collision and improving the tag reading rate.

关 键 词：RFID CDMA 多信道 M序列 相关运算 

分 类 号：TN929[电子电信—通信与信息系统]