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Rate-Splitting-Based RF-UWOC Relaying Systems with Hardware Impairments and Interference.

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Summary
This summary is machine-generated.

This study analyzes rate-splitting (RS) based radio frequency-underwater wireless optical communication (RF-UWOC) systems. Optimal power allocation (PA) enhances system reliability, mitigating hardware impairments and interference.

Keywords:
RF-UWOChardware impairmentsinterferenceoutage probabilityrate-splitting

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Area of Science:

  • Wireless communication systems
  • Optical communication

Background:

  • Radio frequency-underwater wireless optical communication (RF-UWOC) systems are crucial for high-rate, full-coverage networks.
  • Rate-splitting (RS) with power allocation (PA) offers a generalized framework for system performance evaluation.

Purpose of the Study:

  • To analyze the performance of an RS-based RF-UWOC system considering hardware impairments (HIs) and interference.
  • To formulate analytical expressions for outage probability (OP) and ergodic capacity (EC).

Main Methods:

  • Developed a generalized framework for performance analysis.
  • Formulated analytical expressions for OP and EC.
  • Characterized asymptotic results for OP and diversity gain (DG).

Main Results:

  • OP and EC are influenced by HIs, interference power, PA coefficients, fading, pointing errors (PEs), and UWOC detection type.
  • DG is primarily determined by channel fading, PEs, and detection scheme.
  • HIs and PA coefficients impact coding gain, not DG.

Conclusions:

  • An optimal PA scheme significantly improves the reliability of RS-based RF-UWOC systems.
  • System performance is sensitive to interference power, potentially leading to an interference-limited regime.
  • Hardware impairments and PA strategies are key factors in optimizing system performance.