Measured GPS performance under LTE-M in-device interference

Olli Apilo, Mikko Hiivala, Atte Kuosmonen, Jani Kallankari, Hamid Amin, Mika Lasanen, Markus Berg, Aarno Parssinen

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

    1 Citation (Scopus)
    19 Downloads (Pure)

    Abstract

    In this paper we present the measurement results for time-to-fix, position accuracy, and carrier-to-noise ratio of mass-market Global Positioning System (GPS) receivers under the in-device interference from an LTE-M transmitter. The laboratory measurement set-up is built using software-defined radio (SDR) platforms to conductively feed emulated GPS L1 signals and LTE-M interference signals to the antenna input of the GPS receivers. The LTE-M interference from second harmonics is accurately modelled taking into account the transmitter activity patterns in different coverage enhancement modes. According to measurements, there are large variations in interference tolerance between different GPS receivers. REC01 was able to tolerate high level of interference during tracking and also in acquisition as long as the interference pulse duration is not too long (tens of milliseconds). REC02 performed clearly worse and tolerated only low levels of LTE-M interference during both acquisition and tracking. The same measurement set-up can be used with any GPS receiver for designing proper isolation and filtering levels for co-existing LTE-M transmitters.

    Original languageEnglish
    Title of host publication2018 9th ESA Workshop on Satellite NavigationTechnologies and European Workshop on GNSS Signals and Signal Processing, NAVITEC 2018
    PublisherIEEE Institute of Electrical and Electronic Engineers
    Number of pages7
    ISBN (Electronic)978-1-5386-7125-2
    ISBN (Print)978-1-5386-7126-9
    DOIs
    Publication statusPublished - 2018
    MoE publication typeA4 Article in a conference publication
    Event9th ESA Workshop on Satellite NavigationTechnologies and European Workshop on GNSS Signals and Signal Processing, NAVITEC 2018 - Noordwijk, Netherlands
    Duration: 5 Dec 20187 Dec 2018
    Conference number: 9

    Publication series

    SeriesESA Workshop on Satellite Navigation Technologies and European Workshop on GNSS Signals and Signal Processing
    Volume2018-December
    ISSN2325-5439

    Conference

    Conference9th ESA Workshop on Satellite NavigationTechnologies and European Workshop on GNSS Signals and Signal Processing, NAVITEC 2018
    Abbreviated titleNAVITEC 2018
    Country/TerritoryNetherlands
    CityNoordwijk
    Period5/12/187/12/18

    Keywords

    • global positioning systems
    • interference
    • power harmonic filters
    • harmonic analysis
    • receivers
    • long term evolution
    • REC01
    • REC02
    • GPS receiver
    • GPS L 1 signals
    • interference tolerance
    • software radio
    • LTE-M interference signals

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