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Energy Efficient Probabilistic Switching ON-OFF Operation in Multiantenna Cooperative Wireless Sensor Networks.

Eduardo Yabcznski1, Glauber Brante1, Richard Demo Souza2

  • 1Graduate Program in Electrical and Computer Engineering, Federal University of Technology (UTFPR), Paraná 80230-901, Brazil.

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Summary
This summary is machine-generated.

This study enhances wireless sensor network (WSN) performance for IoT by using multi-antenna techniques like antenna selection (AS) and beamforming. These methods improve data delivery and network longevity, crucial for smart applications.

Keywords:
ON–OFF probabilityamount of informationcooperative wireless sensor networkmultiantenna schemes

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Area of Science:

  • Computer Science
  • Electrical Engineering
  • Telecommunications

Background:

  • Internet of Things (IoT) applications require robust, scalable, and long-lasting wireless sensor networks (WSNs).
  • Key challenges include ensuring reliable data delivery and extending the operational lifetime of network nodes.

Purpose of the Study:

  • To evaluate cooperative WSN performance using multi-antenna schemes.
  • To investigate the impact of antenna selection (AS) and singular value decomposition (SVD) beamforming on information transmission and network lifetime.
  • To analyze the energy-saving benefits of probabilistic relay activation (ON-OFF probability).

Main Methods:

  • Implemented and evaluated two multi-antenna schemes: antenna selection (AS) and beamforming transmission (SVD).
  • Introduced an ON-OFF probability for relay activation to conserve energy.
  • Assessed network performance under an outage probability constraint.

Main Results:

  • Combined AS and SVD significantly increased the amount of effectively transmitted information.
  • The antenna selection (AS) scheme showed particular effectiveness at short transmission distances.
  • Increased antenna count allowed for a lower ON-OFF probability, indicating a trade-off between hardware complexity and cooperation needs.

Conclusions:

  • Cooperative WSNs employing multi-antenna techniques offer substantial improvements in data transmission efficiency.
  • Probabilistic relay activation is an effective strategy for energy conservation and extending WSN lifetime.
  • There is a discernible trade-off between the number of antennas and the necessity for cooperative strategies.