Particular DDM codes for online phase shifter calibration in automotive MIMO radar

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Abstract

Frequency modulated continuous wave (FMCW) multiple input multiple output (MIMO) radar systems employing Doppler division multiplexing (DDM) require calibrating the phase shifters to maintain optimal performance and minimize spurs all along the radar system’s life cycle. Existing methods rely on a dedicated time slot to perform the phase shifters’ calibration. Ideally, a method allowing for online estimation of the phase shifter imbalances without interrupting the radar operation would be desirable. In this work, a particular subset of the DDM coding scheme is analyzed, enabling such an online estimation. The proposed coding scheme and associated constellation imbalance estimator are detailed in this work and tested on the road, showing the robustness of the estimator.
Original languageEnglish
Title of host publicationProceedings of the IEEE Radar Conference (RadarConf23)
PublisherIEEE
Number of pages6
ISBN (Electronic)9781665436694
ISBN (Print)978-1-6654-3669-4
DOIs
Publication statusPublished - May 2023

Publication series

NameProceedings of the IEEE Radar Conference
Volume2023-May
ISSN (Print)1097-5764
ISSN (Electronic)2375-5318

Fields of science

  • 202036 Sensor systems
  • 202 Electrical Engineering, Electronics, Information Engineering
  • 202015 Electronics
  • 202022 Information technology
  • 202023 Integrated circuits
  • 202028 Microelectronics
  • 202037 Signal processing

JKU Focus areas

  • Digital Transformation

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