Presentation 2010-03-05
A study on a frequency offset compensation method for active RFID systems
Sanae NAKAO, Takashi OSHIMA,
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Abstract(in English) UHF-band active RFID (radio frequency identification) systems need to communicate each other correctly under existence of a frequency offset up to 40-kHz between a reader and a tag, because the frequency tolerance to the specified low power radio station in 950 MHz-band is 20-ppm. This frequency offset degrades eye openings of the transceiver largely. Therefore, the BER (bit error rate) between the reader and the tag increases. In a practical use, the frequency offset have to be compensated under large adjacent channel interference. This paper proposes an effective method to compensate the frequency offset using a numerical PLL. This enables us to detect offset frequency accurately under the adjacent channel interference which SIR (signal to interference ratio) is 0 dB.
Keyword(in Japanese) (See Japanese page)
Keyword(in English) RFID / UHF-band / active tag / frequency offset / compensation
Paper # RCS2009-340
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Conference Information
Committee RCS
Conference Date 2010/2/24(1days)
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Paper Information
Registration To Radio Communication Systems (RCS)
Language JPN
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) A study on a frequency offset compensation method for active RFID systems
Sub Title (in English)
Keyword(1) RFID
Keyword(2) UHF-band
Keyword(3) active tag
Keyword(4) frequency offset
Keyword(5) compensation
1st Author's Name Sanae NAKAO
1st Author's Affiliation Hitachi, Ltd., Central Research Laboratory()
2nd Author's Name Takashi OSHIMA
2nd Author's Affiliation Hitachi, Ltd., Central Research Laboratory
Date 2010-03-05
Paper # RCS2009-340
Volume (vol) vol.109
Number (no) 440
Page pp.pp.-
#Pages 5
Date of Issue