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Updated: May 27, 2026

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Widely linear precoding with interference exploitation for improper signals in MU-MISO systems.

Qiusheng Gao1, Jiaju Zhang2, Xianglong Meng1

  • 1State Grid Hebei Electric Power Company Co. Ltd Information & Telecommunication Branch, Shijiazhuang, 050000, China.

Scientific Reports
|May 25, 2026
PubMed
Summary
This summary is machine-generated.

New precoding techniques exploit improper signals in power communication networks, enhancing performance for high-definition video and real-time data. These methods improve signal-to-noise ratio and bit error rate in multi-user systems.

Keywords:
Dedicated power communication networkImproper signalInterference exploitationWidely linear precodingWidely linear reception

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Area of Science:

  • Electrical Engineering
  • Signal Processing
  • Telecommunications

Background:

  • Modern power communication networks demand higher capacity and reliability for advanced services.
  • Traditional systems often overlook the performance benefits of improper signals, common in modulations like binary phase shift keying (BPSK) and amplitude shift keying (ASK).

Purpose of the Study:

  • To develop and evaluate novel precoding and reception techniques for multi-user multiple-input single-output (MU-MISO) systems utilizing improper signals.
  • To enhance system performance by exploiting the asymmetric statistics of improper signals.

Main Methods:

  • Proposed two widely linear precoding schemes: Widely Linear Zero-Forcing (WLZF) and Widely Linear Minimum Mean Square Error (WLMMSE).
  • Developed optimal widely linear receivers to complement the precoding techniques.
  • Integrated interference exploitation strategies tailored for improper signals.

Main Results:

  • Simulations demonstrated significant improvements in signal-to-noise ratio (SNR) compared to conventional methods.
  • Substantial reductions in bit error rate (BER) were observed, indicating enhanced reliability.
  • The proposed techniques effectively leverage the characteristics of improper signals for performance gains.

Conclusions:

  • Widely linear precoding and reception offer a promising approach for optimizing power communication networks with improper signals.
  • These advancements provide valuable insights for designing high-reliability, low-latency communication systems.
  • Exploiting improper signal properties can lead to superior performance in MU-MISO systems.