Multipath identification using steepest gradient method for dynamic inventory in UHF RFID

Jin Mitsugi, Yu Shibao

Research output: Chapter in Book/Report/Conference proceedingConference contribution

6 Citations (Scopus)

Abstract

UHF passive RFID has been already in practice. Industrial applications sometimes suffer insufficient tag readability. Engineering may be needed to enhance the readability, accordingly. One of the factor to deteriorate the readability is the multipath fading. Identification of principal reflecting paths is essential to improve the readability deterioration by, for example, using antenna diversity and usage of microwave absorbance materials to suppress reflections. In this paper, a path identification method for UHF RFID using the measured power profile is presented. The method only requires a series of the received power measurement at the position of the target tag. By applying the steepest gradient method, we can optimize the parameters that defines the reflecting plane and eventually identifies the path direction. Together with theoretical development of the method, numerical example shows the validity of the method.

Original languageEnglish
Title of host publication2007 International Symposium on Applications and the Internet - Workshops, SAINT-W
DOIs
Publication statusPublished - 2007 Dec 1
Event2007 International Symposium on Applications and the Internet - Workshops, SAINT-W - Hiroshima, Japan
Duration: 2007 Jan 152007 Jan 19

Publication series

NameSAINT - 2007 International Symposium on Applications and the Internet - Workshops, SAINT-W

Other

Other2007 International Symposium on Applications and the Internet - Workshops, SAINT-W
CountryJapan
CityHiroshima
Period07/1/1507/1/19

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ASJC Scopus subject areas

  • Computer Networks and Communications
  • Computer Science Applications
  • Software

Cite this

Mitsugi, J., & Shibao, Y. (2007). Multipath identification using steepest gradient method for dynamic inventory in UHF RFID. In 2007 International Symposium on Applications and the Internet - Workshops, SAINT-W [4090088] (SAINT - 2007 International Symposium on Applications and the Internet - Workshops, SAINT-W). https://doi.org/10.1109/SAINT-W.2007.79