Title :
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
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;
Conference_Titel :
Electron Devices and Solid-State Circuits (EDSSC), 2014 IEEE International Conference on
DOI :
10.1109/EDSSC.2014.7061156
