Designing synchronization patterns minimizing the latency and the computational complexity for inaudible sound communication systems

Naofumi Aoki; Kosei Ozeki; Kenichi Ikeda; Hiroshi Yasuda; Hiroyuki Namba

doi:10.1587/comex.2023TCL0007

Special Cluster in Emerging Communication Technologies in Conjunction with Main Topics of ICETC2022

Designing synchronization patterns minimizing the latency and the computational complexity for inaudible sound communication systems

Naofumi Aoki, Kosei Ozeki, Kenichi Ikeda, Hiroshi Yasuda, Hiroyuki Namba

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Keywords: inaudible sound communication, synchronization, de Bruijn sequence, Euler graph

JOURNAL FREE ACCESS

2023 Volume 12 Issue 8 Pages 392-397

DOI https://doi.org/10.1587/comex.2023TCL0007

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Abstract

The inaudible sound communication system of our implementation estimates the correct positions of received symbols in its decoding process by calculating the correlations with the pre-defined synchronization patterns. This paper describes that a theoretical approach based on solving Euler graphs taking account of constraint conditions may potentially provide more efficient synchronization patterns, compared with the conventional technique that employs random sequences for designing synchronization patterns.

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