Modeling and Simulation of New Encoding Schemes for High‐Speed UHF RFID Communication

• Published in: ETRI journal Vol. 37; no. 2; pp. 241 - 250
• Main Authors: Mo, Sang‐Hyun, Bae, Ji‐Hoon, Park, Chan‐Won, Bang, Hyo‐Chan, Park, Hyung Chul
• Format: Journal Article
• Language: English
• Published: Electronics and Telecommunications Research Institute (ETRI) 01.04.2015; 한국전자통신연구원
• Subjects: extended pulse‐interval encoding; high‐speed Miller encoding; multi‐antenna; passive tag; RFID; 전자/정보통신공학
• ISSN: 1225-6463; 2233-7326
• DOI: 10.4218/etrij.15.2314.0111

In this paper, we present novel high‐speed transmission schemes for high‐speed ultra‐high frequency (UHF) radio‐frequency identification communication. For high‐speed communication, tags communicate with a reader using a high‐speed Miller (HS‐Miller) encoding and multiple antennas, and a reader communicates with tags using extended pulse‐interval encoding (E‐PIE). E‐PIE can provide up to a two‐fold faster data rate than conventional pulse‐interval encoding. Using HS‐Miller encoding and orthogonal multiplexing techniques, tags can achieve a two‐ to three‐fold faster data rate than Miller encoding without degrading the demodulation performance at a reader. To verify the proposed transmission scheme, the MATLAB/Simulink model for high‐speed backscatter based on an HS‐Miller modulated subcarrier has been designed and simulated. The simulation results show that the proposed transmission scheme can achieve more than a 3 dB higher BER performance in comparison to a Miller modulated subcarrier.