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Macrodiversity Reception with Distributed Hard-Decision Receivers for Maritime Wireless Sensor Networks.

Weigang Chen1,2, Dongming Sun1, Changcai Han1

  • 1School of Microelectronics, Tianjin University, Tianjin 300072, China.

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This study introduces a macrodiversity reception scheme to improve maritime wireless sensor network reliability. The proposed method enhances data transmission in challenging marine environments using distributed receivers.

Keywords:
equal gain combininghard-decisionmacrodiversitywireless sensor networks

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Area of Science:

  • Marine engineering
  • Wireless communication systems
  • Sensor networks

Background:

  • Maritime wireless sensor networks (MWSNs) are crucial for marine environment monitoring.
  • Data transmission in MWSNs is often unreliable due to harsh marine propagation conditions.
  • Existing methods struggle to ensure consistent data transfer over extended ranges.

Purpose of the Study:

  • To enhance transmission reliability and extend the range of MWSNs.
  • To propose a novel macrodiversity reception scheme for sink nodes.
  • To address the limitations of current MWSN communication technologies.

Main Methods:

  • Implementing a macrodiversity reception scheme with distributed multiple hard-decision receivers at the sink node.
  • Clustering receivers in diverse locations to capture signals experiencing different fadings.
  • Employing a cascaded combining strategy using hard-decision information to simplify receiver complexity.

Main Results:

  • The macrodiversity reception scheme demonstrated a 3-4 dB transmission gain over single-antenna reception in ocean scenarios.
  • This gain was observed with a package loss rate of 10^-2.
  • The proposed scheme effectively improves data transmission reliability in maritime environments.

Conclusions:

  • The developed macrodiversity reception scheme offers a viable solution for reliable data transmission in MWSNs.
  • It provides a practical method for enhancing communication using commercial transceivers with hard-decision outputs.
  • This research contributes a new approach to overcoming signal reliability challenges in marine wireless networks.