Acoustic Sensing and Communication Using Metasurface
summary
System combines a passive 16×16 metasurface with a tiny speaker array and joint optimization of metasurface phase, speaker codebook, and geometry to steer beams without active phased arrays. Prototype is 3D‑printed and passive; experiments show power gains comparable to a 70‑speaker phased array and beamwidth comparable to a 9×16 phased array. Measured improvements include 2.2–2.6× sensing range for distance, 1.9–2.5× for AoA accuracy and about 2.4× communication range increases.
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chapters (10)
- 0:00Start
- 1:00Major Challenge
- 1:31Conventional Solution: Receiver side
- 4:05Acoustic Metasurface Pros & Cons
- 6:46System Model
- 10:42Evaluation: SNR Comparison
- 12:50Evaluation: Sensing Performance (Distance Estimation)
- 13:09Evaluation: Sensing Performance (AoA Estimation)
- 13:22Evaluation: Communication Performance (BER)
- 14:01Conclusion
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