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)
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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
CountryNetherlands
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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