Mapping Error Reduction Methods for Polyphase Codes Generated by Quadrature Architectures

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In Phase-Modulated Continuous Wave (PMCW) radar the phase symbols can be approximated by constellation points from a quadrature transmitter. However, this leads to mapping errors w.r.t. the ideal symbols. This paper evaluates the effects of the mapping errors in P4 polyphase codes on the performance of PMCW radars based on quadrature transmitters. Two methods are analysed to reduce these errors. Firstly, rotating the phase symbols in the constellation before mapping to the constellation diagram is analysed. Secondly, the effect of applying dither is analysed. System-level simulation results validate both methods and show improvements of the relative sidelobe level exceeding 20 dB.

Original languageEnglish
Title of host publication2022 19th European Radar Conference (EuRAD)
PublisherInstitute of Electrical and Electronics Engineers
Number of pages4
ISBN (Electronic)978-2-8748-7071-2
Publication statusPublished - 25 Oct 2022
Event19th European Radar Conference, EuRAD 2022 - Milan, Italy
Duration: 28 Sept 202230 Sept 2022
Conference number: 19


Conference19th European Radar Conference, EuRAD 2022
Abbreviated titleEuRAD 2022


  • Automotive radar
  • P4
  • Phase codes
  • PMCW radar
  • Polyphase
  • Quadrature architecture


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