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Development of New Methods for Quantifying Fish Density Using Underwater Stereo-video Tools
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Energy-Efficient Channel Coding Strategy for Underwater Acoustic Networks.

Grasielli Barreto1, Daniel H Simão2, Marcelo E Pellenz3

  • 1Postgraduate Program in Computer Science (PPGIa), Pontifical Catholic University of Parana, Paraná 80215-901, Curitiba, Brazil. grasibarreto@gmail.com.

Sensors (Basel, Switzerland)
|April 1, 2017
PubMed
Summary

Optimizing channel coding parameters in underwater acoustic networks (UAN) improves energy efficiency. This study identifies the best forward error correction (FEC) and fountain code (FC) settings based on link distance and signal-to-noise ratio.

Keywords:
energy efficiencyforward error correction codesfountain codesunderwater acoustic networks

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Area of Science:

  • Engineering
  • Computer Science
  • Marine Technology

Background:

  • Underwater acoustic networks (UAN) are crucial for sub-aquatic monitoring but face challenges like long delays and unreliable channels.
  • Efficient energy consumption is a key challenge in UAN due to limited power resources.
  • Existing communication schemes often struggle with the unique characteristics of underwater environments.

Purpose of the Study:

  • To investigate energy-efficient communication strategies for UAN.
  • To optimize channel coding parameters for improved performance in UAN.
  • To evaluate the impact of different coding schemes on energy consumption in underwater environments.

Main Methods:

  • A two-layer encoding scheme combining forward error correction (FEC) and fountain codes (FC) was developed.
  • Energy consumption was modeled and evaluated for various channel coding schemes.
  • A K-distributed multipath channel model was used to simulate underwater acoustic environments.
  • FEC encoding parameters, including error correction capability and code block size, were optimized.

Main Results:

  • The study identified optimal channel coding parameters for energy-efficient communication in UAN.
  • Performance was evaluated as a function of link distance and received signal-to-noise ratio.
  • The proposed two-layer coding scheme demonstrated potential for reducing energy consumption.

Conclusions:

  • Optimized channel coding parameters significantly enhance energy efficiency in UAN.
  • The choice of FEC and FC parameters is critical and depends on link distance and SNR.
  • This research provides valuable insights for designing more sustainable underwater acoustic networks.