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A Nonbinary LDPC-Coded Probabilistic Shaping Scheme for a Rayleigh Fading Channel.

Weimin Kang1

  • 1School of Information and Communication Engineering, North University of China, Taiyuan 030051, China.

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Summary
This summary is machine-generated.

A new nonbinary (NB) LDPC-coded probabilistic shaping (PS) scheme enhances error performance in Rayleigh fading channels. This reliable scheme optimizes modulation constellations for future communication systems.

Keywords:
Rayleigh fadingnonbinary LDPCprobabilistic shaping

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Area of Science:

  • Electrical Engineering
  • Information Theory
  • Digital Communications

Background:

  • Rayleigh fading channels pose significant challenges for reliable data transmission.
  • Error performance limitations in existing binary LDPC-coded probabilistic shaping schemes.

Purpose of the Study:

  • To propose and evaluate a novel nonbinary (NB) LDPC-coded probabilistic shaping (PS) scheme.
  • To optimize modulation constellations for improved performance in Rayleigh fading channels.

Main Methods:

  • Developed a nonbinary LDPC-coded probabilistic shaping scheme.
  • Optimized rotation angles for 16-QAM, 64-QAM, and 256-QAM constellations via exhaustive search.
  • Conducted simulations to verify information-theoretical analysis.

Main Results:

  • The proposed NB LDPC-coded PS scheme demonstrates improved error performance compared to binary LDPC-coded PS schemes.
  • Simulation results align with information-theoretical predictions.
  • Optimized constellation rotation angles yield significant performance gains.

Conclusions:

  • The novel NB LDPC-coded PS scheme is a reliable solution for Rayleigh fading channels.
  • This scheme offers superior error performance, making it suitable for advanced communication systems.
  • The optimization of modulation constellations is crucial for maximizing scheme efficiency.