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Channel Measurement and Feasibility Test for Wireless Avionics Intra-Communications.

Inkyu Bang1, Hyunwoo Nam2, Woohyuk Chang3

  • 1Department of Computer Science, School of Computing, National University of Singapore, Singapore 117417, Singapore. inkyu@comp.nus.edu.sg.

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Summary
This summary is machine-generated.

This study validates IEEE 802.11 for wireless avionics intra-communication (WAIC) in aircraft using real-world experiments. It also evaluates multi-antenna techniques like MRC and STBC for improved bit error rate (BER) performance.

Keywords:
IEEE 802.11channel measurementsmonopole antennassensor networkssoftware-defined radio (SDR)wireless avionics intra-communications (WAIC)

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Area of Science:

  • Aerospace Engineering
  • Wireless Communications
  • Signal Processing

Background:

  • Wireless avionics intra-communication (WAIC) offers a lighter, cost-effective alternative to traditional wired systems.
  • The 4.2–4.4 GHz frequency band is now approved for WAIC, driving research into suitable protocols.
  • Existing protocols like IEEE 802.11 and IEEE 802.15 are candidates for intra-avionics sensor networks.

Purpose of the Study:

  • To investigate wireless channel characteristics for intra-avionics sensor networks in the approved WAIC band.
  • To validate the feasibility of the IEEE 802.11 protocol within real aircraft environments.
  • To evaluate the bit error rate (BER) performance of multiple antenna techniques for WAIC.

Main Methods:

  • Conducted real-field experiments using a software-defined radio (SDR) platform (USRP).
  • Utilized self-produced monopole antennas specifically designed for the WAIC band (4.2–4.4 GHz).
  • Analyzed measurement data to assess BER performance with Maximum Ratio Combining (MRC) and Space-Time Block Coding (STBC).

Main Results:

  • Confirmed the practical feasibility of the IEEE 802.11 protocol for intra-avionics sensor networks in actual aircraft settings.
  • Gathered crucial data on wireless channel characteristics within the WAIC band.
  • Quantified the BER performance improvements offered by MRC and STBC techniques.

Conclusions:

  • The IEEE 802.11 protocol is a viable option for wireless avionics intra-communication systems.
  • The experimental data provides valuable insights for optimizing multi-antenna system design in WAIC.
  • Further research into advanced antenna techniques can enhance the reliability of future wireless avionics networks.