The effects of single bit quantization on direction of arrival estimation of UHF RFID tags

Jordy Huiting, André B.J. Kokkeler, Gerard J.M. Smit

    Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

    3 Citations (Scopus)
    36 Downloads (Pure)

    Abstract

    Phased arrays can be used to estimate the direction-of-arrival (DOA) of UHF RFID tags. To save on energy consumption and hardware costs, in this paper we explore the possibility of using single bit analog-to-digital converters for our phased array setup. This setup consists of an off-the-shelf Impinj R2000 reader and a custom phased array with 4 receiving channels. The proposed system quantizes the baseband quadrature signals individually. As there is a direct relation between the correlation coefficient of a quantized signal and an unquantized signal, the error introduced by quantization can be corrected. The experimental results show that single bit quantization can be used for DOA estimation and the mean error increases only slightly. The proposed correction achieves better results than uncorrected quantized estimation, at the cost of the need for signal power measurements.
    Original languageEnglish
    Title of host publication2016 IEEE International Conference on RFID Technology and Applications (RFID-TA)
    Place of PublicationPiscataway, NJ
    PublisherIEEE
    Pages55-60
    Number of pages6
    ISBN (Print)978-1-5090-1409-5
    DOIs
    Publication statusPublished - 21 Sept 2016
    Event2016 IEEE International Conference on RFID Technology and Application, RFID-TA 2016 - Shunde, China
    Duration: 21 Sept 201622 Sept 2016
    http://2016.ieee-rfid-ta.org/

    Conference

    Conference2016 IEEE International Conference on RFID Technology and Application, RFID-TA 2016
    Abbreviated titleRFID-TA
    Country/TerritoryChina
    CityShunde
    Period21/09/1622/09/16
    Internet address

    Keywords

    • Phased array
    • MUSIC
    • Quantization
    • UHF RFID

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