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Improvement of Detection Performance of a Tag response signal in ISO/IEC 18000-6 Type-B Readers  

Choi, Woo-Seok (부산대학교 전자공학과 통신 및 신호처리 연구실)
Suh, Ki-Hwan (부산대학교 전자공학과 통신 및 신호처리 연구실)
Kim, Hyoung-Nam (부산대학교 전자공학과 통신 및 신호처리 연구실)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.32, no.1C, 2007 , pp. 59-66 More about this Journal
Abstract
This paper proposes a windowing method to reduce noise effect and bit synchronization error caused by tolerance of a tag-response signal for ISO/IEC 18000-6 type-B readers. A tag response signal has very weak power because of a back-scattering modulation scheme and thus may be sensitive to noise. In addition, bit tolerance admitted in a tag response signal requires robust timing synchronization because it affects readers' detection performance. To reduce the two undesirable effects in a tag signal, we acquire bit transition position by using variable windows from over-sampled data, and average whole data in one bit duration. With a hardware system adopting the proposed method, we tested and verified its performance.
Keywords
RFID; Type-B;
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  • Reference
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