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Updated: Oct 12, 2025

Transmission of Multiple Signals through an Optical Fiber Using Wavefront Shaping
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Optical Channel Selection Avoiding DIPP in DSB-RFoF Fronthaul Interface.

Zbigniew Zakrzewski1

  • 1Institute of Telecommunications and Computer Science, Bydgoszcz University of Science and Technology, Al. Prof. Sylwestra Kaliskiego 7, 85-796 Bydgoszcz, Poland.

Entropy (Basel, Switzerland)
|November 27, 2021
PubMed
Summary

This study introduces a method to select optical channels for double-sideband radio-frequency-over-fiber (DSB-RFoF) signals, preventing dispersion-induced power penalty (DIPP) in dense wavelength division multiplexing (DWDM) systems without chromatic dispersion compensation.

Keywords:
6GA-RoFB5GDIPPDSB-RFoFXhaulfronthauloptical channel selection

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Area of Science:

  • Optical communications
  • Wireless communication systems
  • Signal processing

Background:

  • Optical fronthaul networks are crucial for 5G and future wireless systems.
  • Dispersion-induced power penalty (DIPP) is a significant challenge in intensity modulation-direct detection (IM-DD) systems.
  • Dense wavelength division multiplexing (DWDM) offers high capacity but requires careful channel management.

Purpose of the Study:

  • To propose and analyze a method for selecting optical channels to mitigate DIPP in DSB-RFoF fronthaul.
  • To develop an algorithm for effective optical channel selection under DIPP conditions.
  • To evaluate the method's performance across different fiber types and radio carriers.

Main Methods:

  • Theoretical calculations of DIPP limitations for various single-mode fibers and microwave radio carriers.
  • Development of an optical channel selection algorithm based on calculated limitations.
  • Computer simulations to verify calculations for selected fiber types and radio carriers.
  • Utilizing cyclic-prefix orthogonal frequency division multiplexing (CP-OFDM) with 5G numerology for modulated signals.

Main Results:

  • Identified limitations of the proposed optical channel selection method.
  • Demonstrated the feasibility of the method through simulations for specific scenarios.
  • Provided insights into optimal channel selection strategies for DSB-RFoF over IM-DD fronthaul.

Conclusions:

  • The proposed method effectively addresses DIPP in DWDM optical fronthaul for DSB-RFoF signals.
  • The developed algorithm aids in selecting appropriate optical channels, enhancing system performance.
  • The findings are relevant for next-generation wireless communication deployments.