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Consider two sources of sound, that may or may not be in phase, emitting waves at a single frequency, and consider the frequencies to be the same.
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Accurately determining beam deflection and slope under various loading conditions in structural engineering is crucial for ensuring safety and structural integrity. Singularity functions offer a streamlined approach to analyzing beams, especially when multiple loading functions complicate the bending moment equation.
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Modification of Simple Antenna Pattern Models for Inter-Beam Interference Assessment in Massive

Jarosław Wojtuń1, Cezary Ziółkowski1, Jan M Kelner1

  • 1Institute of Communications Systems, Faculty of Electronics, Military University of Technology, 00-908 Warsaw, Poland.

Sensors (Basel, Switzerland)
|November 25, 2023
PubMed
Summary
This summary is machine-generated.

A new method improves signal-to-interference ratio (SIR) assessment in fifth-generation (5G) systems by modifying antenna patterns. This reduces cross-beam interference, crucial for enhancing massive multiple-input-multiple-output (MIMO) performance.

Keywords:
5Gantenna beam patterninter-beam interferencemassive MIMOmulti-ellipsoidal propagation model (MPM)signal-to-interference ratio (SIR)wireless communications

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Area of Science:

  • Wireless Communication Engineering
  • Antenna Theory and Design
  • Signal Processing

Background:

  • Cross-beam interference is a significant limitation for massive MIMO in 5G systems.
  • Accurate interference evaluation is essential for spatial planning in wireless networks.
  • Existing antenna pattern models face challenges with changing beam directions and complex patterns.

Purpose of the Study:

  • To propose a novel modification of simple antenna pattern models for interference assessment.
  • To develop an original methodology for evaluating the signal-to-interference ratio (SIR) from adjacent beams.
  • To address the challenges posed by changing radiation directions and complex antenna patterns.

Main Methods:

  • A novel modification to simple antenna pattern models by adjusting directivity.
  • An original methodology for assessing SIR from adjacent beams using the modified patterns.
  • Simulation studies employing a multi-ellipsoidal propagation model and 3GPP massive MIMO antenna patterns.

Main Results:

  • The proposed modification allows for interference assessment independent of antenna type or structure.
  • The methodology accurately assesses SIR, with errors of no more than 3 dB (LOS) and 0.1 dB (non-LOS).
  • Simulations utilized 3GPP antenna patterns as a reference for SIR error analysis.

Conclusions:

  • Modifying simple antenna pattern models offers a viable solution for accurate interference assessment in 5G systems.
  • The developed methodology effectively mitigates challenges associated with complex antenna patterns and beam direction changes.
  • This approach enhances the spatial planning and performance optimization of massive MIMO in wireless networks.