A non-real-time underwater acoustic communication system based on WeChat

In this paper, we design a non-real-time underwater acoustic speech communication system similar to WeChat. Its communication rate reaches 2400bps when the communication distance is less than 5km. Due to the time-varying characteristic of underwater acoustic channel, we choose a short code named com...

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Bibliographic Details
Published in2017 IEEE International Conference on Signal Processing, Communications and Computing (ICSPCC) pp. 1 - 4
Main Authors Jing-jing Cai, Xia-lin Jiang, Hao-qian Huang, Qian Ding, Wei Su
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.10.2017
Subjects
Bit error rate
CCK coding
Frequency modulation
MBE
MFSK
Speech
Speech coding
underwater acoustic channel
Underwater acoustics
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Summary:In this paper, we design a non-real-time underwater acoustic speech communication system similar to WeChat. Its communication rate reaches 2400bps when the communication distance is less than 5km. Due to the time-varying characteristic of underwater acoustic channel, we choose a short code named compensation code keying (CCK) soft spread spectrum without reducing the communication rate. As for speech coding, we adopt the Multi-Band Excitation (MBE) model. We refine the system parameters through computer simulations and pool experiments. Finally, the performance of this underwater speech communication system is confirmed by pool experiment.
DOI:10.1109/ICSPCC.2017.8242423