Design of spread spectrum based UHF RFID tag for location system

Author

Tian Ding ; Chun Zhang ; Zhongqiu Li ; Wei Zhang ; Hong Chen ; Wen Jia

Author_Institution

Inst. of Microelectron., Tsinghua Univ., Beijing, China

fYear

2014

Firstpage

1

Lastpage

2

Abstract

Radio frequency identification (RFID) applications with large tag populations often require the fast identification of the tags present. This paper applies a spread-spectrum technique and adds some new functions based on 18000-6C protocol, so that a RFID tag can transmit the unique spreading code which can be configured by reader for code division multiple access (CDMA). Therefore, an UHF-RFID reader can receive the spreading codes from numbers of tags at the same time and gets the position of each tag by means of time difference of arrival (TDOA) simultaneously.

Keywords

code division multiple access; codes; protocols; radiofrequency identification; spread spectrum communication; time-of-arrival estimation; CDMA; TDOA; UHF RFID tag; code division multiple access; location system; radio frequency identification; spread spectrum design; spread spectrum technique; time difference of arrival; unique spreading code; Field programmable gate arrays; Generators; Multiaccess communication; Protocols; RFID tags; Standards; CDMA; RFID; location; spread spectrum;

fLanguage

English

Publisher

ieee

Conference_Titel

Electron Devices and Solid-State Circuits (EDSSC), 2014 IEEE International Conference on

Type

conf

DOI

10.1109/EDSSC.2014.7061156

Filename

7061156