Development of Long-Range RFID Reader System supporting Sensor Tag 


Vol. 34,  No. 6, pp. 626-633, Jun.  2009


PDF Full-Text
  Abstract

ISO/IEC/WD 24753 defines new modem specifications for a long-range RFID communications and application protocol for a sensor tag system. According to the standard, the frequency offset of the tag is 4%. In general wireless communications systems, it is known that a coherent receiver is superior to a non-coherent receiver. However, if the frequency offset is large, it is difficult to restore the original data accurately with a coherent receiver, and the performance of a coherent receiver is easily degraded. In this paper, a non-coherent receiver structure is adopted to solve the frequency offset problem of long-range RFID communications. We designed a frequency estimation block to find an optimal frequency from the received signal with 4% frequency offset and proposed a start frame delimiter (SFD) detection algorithm to determine the start position of the payload. The frequency estimation block finds the optimal frequency from the received signal using 9-correlators. And the SFD detection block searches the received signal to find the start position of the payload with dual correlator. We implemented a long-range RFID reader with the proposed methods and evaluated its performance in a wired/wireless test network. The implemented long-range RFID reader showed more superior performance than the commercial RFID reader in terms of recognition range.

  Statistics
Cumulative Counts from November, 2022
Multiple requests among the same browser session are counted as one view. If you mouse over a chart, the values of data points will be shown.


  Cite this article

[IEEE Style]

D. Shin and D. Kim, "Development of Long-Range RFID Reader System supporting Sensor Tag," The Journal of Korean Institute of Communications and Information Sciences, vol. 34, no. 6, pp. 626-633, 2009. DOI: .

[ACM Style]

Dong-Beom Shin and Dae-Young Kim. 2009. Development of Long-Range RFID Reader System supporting Sensor Tag. The Journal of Korean Institute of Communications and Information Sciences, 34, 6, (2009), 626-633. DOI: .

[KICS Style]

Dong-Beom Shin and Dae-Young Kim, "Development of Long-Range RFID Reader System supporting Sensor Tag," The Journal of Korean Institute of Communications and Information Sciences, vol. 34, no. 6, pp. 626-633, 6. 2009.

Search
(IN TITLE, AUTHOR, ABSTRACT,KEYWORDS)

Advanced Search ▼

POPULAR KEYWORDS
(TOP 10 KEYWORDS)

Recent Publications
(LAST 3 YEARS)






pISSN : 1226 - 4717
eISSN : 2287 - 3880