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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.
Sensors (Basel, Switzerland)
|March 17, 2019
Summary
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.
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.
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