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Published on: September 5, 2019

Unfolded RPCA Network for Mitigating Inter-Transmitter Code Interference in MIMO PMCW Systems.

Yonghee Lee1, Jong-Ho Lee2, Seongwook Lee1

  • 1Department of Electrical and Electronics Engineering, College of ICT Engineering, Chung-Ang University, Dongjak-gu, Seoul 06974, Republic of Korea.

Sensors (Basel, Switzerland)
|June 12, 2026
PubMed
Summary
This summary is machine-generated.

We developed an unfolded robust principal component analysis (RPCA) network to reduce interference in multiple-input and multiple-output (MIMO) phase-modulated continuous wave (PMCW) systems. This efficient method significantly lowers computational complexity for real-time applications.

Keywords:
inter-transmitter code interferencemultiple-input and multiple-output (MIMO)phase-modulated continuous-wave (PMCW) systemsrobust principal component analysis (RPCA)

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Area of Science:

  • Electrical Engineering
  • Signal Processing
  • Wireless Communications

Background:

  • Phase-modulated continuous wave (PMCW) is crucial for integrated sensing and communication systems.
  • Multiple-input and multiple-output (MIMO) PMCW systems face inter-transmitter code interference from multiplexing.
  • This interference appears as a low-rank component in the range-Doppler domain, distinct from sparse target echoes.

Purpose of the Study:

  • To mitigate inter-transmitter code interference in MIMO PMCW systems.
  • To address the high computational complexity of conventional robust principal component analysis (RPCA).
  • To develop an efficient and computationally feasible interference mitigation technique.

Main Methods:

  • Proposed an unfolded RPCA network, mapping iterative steps to network stages.
  • Replaced singular value decomposition (SVD) with a factorized low-rank approximation within the network.
  • Incorporated stage-wise learnable parameters for adaptive interference mitigation.

Main Results:

  • The unfolded RPCA network achieved interference mitigation comparable to conventional RPCA.
  • Demonstrated a 21.2 times reduction in inference latency compared to traditional RPCA.
  • Validated the effectiveness and computational efficiency for real-time applications.

Conclusions:

  • The proposed unfolded RPCA network offers an effective solution for inter-transmitter code interference in MIMO PMCW systems.
  • The method provides significant computational advantages, enabling real-time processing.
  • This advancement supports the development of next-generation integrated sensing and communication systems.