Research Article
UltraComm: High-Speed and Inaudible Acoustic Communication
@INPROCEEDINGS{10.1007/978-3-030-38819-5_12, author={Guoming Zhang and Xiaoyu Ji and Xinyan Zhou and Donglian Qi and Wenyuan Xu}, title={UltraComm: High-Speed and Inaudible Acoustic Communication}, proceedings={Quality, Reliability, Security and Robustness in Heterogeneous Systems. 15th EAI International Conference, QShine 2019, Shenzhen, China, November 22--23, 2019, Proceedings}, proceedings_a={QSHINE}, year={2020}, month={1}, keywords={Ultrasound Inaudible acoustic communication Nonlinearity Device-to-device communication}, doi={10.1007/978-3-030-38819-5_12} }- Guoming Zhang
Xiaoyu Ji
Xinyan Zhou
Donglian Qi
Wenyuan Xu
Year: 2020
UltraComm: High-Speed and Inaudible Acoustic Communication
QSHINE
Springer
DOI: 10.1007/978-3-030-38819-5_12
Abstract
Acoustic communication has become a research focus without requiring extra hardware on the receiver side and facilitates numerous near-field applications such as mobile payment, data sharing. To communicate, existing researches either use audible frequency band or inaudible one. The former gains a high throughput but endures being audible, which can be annoying to users. The latter, although inaudible, falls short in throughput due to the limited available (near) ultrasonic bandwidth (18–22 kHz). In this paper, we achieve both high speed and inaudibility for acoustic communication by modulating the coded acoustic signal (0–20 kHz) on ultrasonic carrier. By utilizing the nonlinearity effect on microphone, the modulated audible acoustic signal can be demodulated and then decoded. We design and implement UltraComm, an inaudible acoustic communication system with OFDM scheme based on the characteristics of the nonlinear speaker-to-microphone channel. We evaluate UltraComm on different mobile devices and achieve throughput as high as 16.24 kbps, meanwhile, keep inaudibility.