题目/Title：A Robust Radio Frequency Identification System Enhanced with Spread Spectrum Technique

作者/Author：朱秋玲,张春,刘忠奇,王敬超,李福乐,王志华
                        Qiuling Zhu,Chun Zhang,Zhongqi Liu,Jingchao Wang,Fule Li,Zhihua Wang

会议/Conference：ISCAS 2009

地点/Location：Taiwan

年份/Issue Date：2009.24 May

页码/pages：pp. 37 - 40

摘要/Abstract：
A robust passive UHF RFID backscatter systemenhanced with spread spectrum technique is presented in thispaper. Due to the weak signal energy of the backscatter chain,traditional RFID backscatter communication is easily affected bythe noises, interferences, and interceptions from theenvironment. To solve the problem, spread spectrum techniqueis introduced into the backscatter link of RFID system.Simulated results show that this approach largely reduces the BitError Rate and improves the system’s reliability and security.For hardware realization, spectrum spreading operation isimplemented in a RFID tag baseband processor, which is finallyapplied into a complete RFID tag and fabricated using 0.18um1P6M CMOS technology. Furthermore, de-spreading operationincluding the PN acquisition is integrated into a FPGAimplementation of RFID reader. Thus, a complete robust RFIDbackscatter system enhanced with spread spectrum technique isconstructed.