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Linear feedback coding scheme for multiple-access fading channels with degraded message sets.

Yuan Liao1, Xiaofang Wang1

  • 1School of Intelligence Technology, Geely University of China, Chengdu, Sichuan, China.

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Summary
This summary is machine-generated.

This study introduces a new linear feedback coding scheme for wireless communications, enhancing data transmission quality and security for 5G and 6G systems. The proposed method offers a practical finite blocklength (FBL) solution with guaranteed physical layer security (PLS).

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Area of Science:

  • Wireless Communication Systems
  • Information Theory
  • Coding Theory

Background:

  • Advancements in 5G and 6G wireless systems increase demands for higher quality and security.
  • Existing channel coding technologies face challenges in meeting these evolving user requirements.
  • Interference reduction is critical for reliable wireless data transmission.

Purpose of the Study:

  • To propose a novel linear feedback coding scheme for Fading Multiple-Access Channels with Degraded Message Sets (FMAC-DMS).
  • To enhance data transmission quality and ensure physical layer security (PLS) in advanced wireless systems.
  • To provide a practical finite blocklength (FBL) coding solution for FMAC-DMS.

Main Methods:

  • Utilizing transmitting beamforming and channel splitting to convert complex signal channels into scalar sub-channels.
  • Applying the extended Schalkwijk-Kailath (SK) coding scheme to each scalar sub-channel.
  • Deriving channel capacity, finite blocklength (FBL) sum-rate, and FBL secrecy achievable sum-rate for FMAC-DMS in SISO and MISO configurations.

Main Results:

  • The proposed scheme effectively transforms complex channels into manageable scalar sub-channels.
  • Channel capacity and sum-rates (including secrecy rates) are derived for both SISO and MISO cases.
  • Numerical and simulation results validate the scheme's effectiveness and practicality.

Conclusions:

  • The developed linear feedback coding scheme offers a viable finite blocklength (FBL) solution for FMAC-DMS.
  • The scheme successfully guarantees physical layer security (PLS) alongside improved data transmission.
  • This research presents a new methodology for constructing practical FBL schemes in complex wireless environments.