Electronics and Telecommunications Research Institute

Seoul National University

Hyung Chul Park

Cheol Sig Pyo

Chan Won Park

Jong Suk Chae

Hyun Seok Kim

Sang Hyun Mo

Kyu Won Han

Jae Young Jung

Ji Hoon Bae

An extended Pulse-Interval Encoding (PIE) modulating method in a Radio Frequency IDentification (RFID) system, wherein the method modulates 2-bit transmitted data and comprises: adjusting a length of a symbol according to a value of the first bit of the transmitted data; and adjusting a length of an energy transfer waiting section according to a value of the second bit of the transmitted data.

Passive radio frequency identification (RFID) reader, passive RFID tag, and transmitting and receiving methods using extended pulse-interval encoding (PIE)

An RFID system using an M pulse amplitude modulation (M-PAM) or M quadrature amplitude modulation (M-QAM) scheme using a plurality of load-modulators, a plurality of antennas, and a communication method thereof are provided. The RFID system includes: an RFID tag; and a reader device communicating with the RFID device, wherein the RFID tag includes: N load-modulators an N antennas communicating with the reader device in any one scheme of M-pulse amplitude modulation (M-PAM) and M-quadrature amplitude modulation (M-QAM) in which modulation of an M level is performed and operated corresponding to the M level.

RFID system and communication method thereof

Growing community of inventors

Seoul, South Korea

Hyung Chul Park