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

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.