PURPOSE: An RFID(Radio Frequency IDentification) system and a communication method thereof are provided to improve communication performance of high speed transmission by using an M-PAM(Pulse Amplitude Modulation) method, an M-QAM(Quadrature Amplitude Modulation) method, an ECC(Error Correcting Code), and a preamble code in which an auto-correlation feature is similar to a delta function. CONSTITUTION: A code generation unit(230) generates an ECC by adding parity to data stored in an RFID tag. A preamble signal generation unit(240) generates a preamble code with an auto-correlation feature of a delta function. Load-modulators(270) and antennas transmit the ECC and the preamble code to a reader device with an M-PAM method or an M-QAM method and are operated in response to an M-level. The number of load-modulators is calculated based on an equation. [Reference numerals] (210) Memory; (220) Packet generation unit; (232) Error correction code setting unit; (234) Error correction code encoder; (240) Preamble signal generation unit; (250) Multiplexor; (260) Thermometer decoder
申请公布号
KR20130047561(A)
申请公布日期
2013.05.08
申请号
KR20120087810
申请日期
2012.08.10
申请人
SEOUL NATIONAL UNIVERSITY OF TECHNOLOGY CENTER FOR INDUSTRY COLLABORATION;ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
发明人
BAE, JI HOON;PARK, CHAN WON;PARK, HYUNG CHUL;CHAE, JONG SUK;PYO, CHEOL SIG