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Acoustic communication system and method

A sound wave communication and sound wave signal technology, applied in the field of communication, can solve problems such as low transmission rate, increased bit error rate of data transmission, limited data distance of sound wave communication, etc. The effect of strong Puller performance

Active Publication Date: 2019-08-02
武汉果冻网络科技有限公司
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Problems solved by technology

However, the data distance of the existing acoustic wave communication is relatively limited, the transmission rate is low (only up to 16bit / s), and when the communication distance is slightly longer, the bit error rate of the data transmission will also increase significantly

Method used

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Embodiment approach

[0064] See Figure 7 The preferred implementation of the acoustic wave communication method of the present invention includes the following steps:

[0065] In step S730, a first processing device performs encoding processing on a digital signal to output a corresponding encoded signal.

[0066] Step S732, a modulation device performs a modulation operation on the coded signal to output a corresponding modulated signal.

[0067] In step S734, the first processor adds a synchronization signal, a guard interval, and a check field to the modulated signal to generate a modulated signal.

[0068] In step S736, the modulated signal is converted into a sound wave signal through an output device.

[0069] In step S738, a receiving device receives the sound wave signal output by the output device, and generates a processing signal corresponding to the sound wave signal.

[0070] Step S740, a demodulation device demodulates the processed signal to obtain a corresponding demodulated signal.

[0071] ...

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Abstract

The invention relates to an acoustic communication system. The acoustic communication system comprises a serial-to-parallel conversion unit and a carrier signal generator; the serial-to-parallel conversion unit is used for grouping a coded signal, so that a number of groups can be obtained; the serial-to-parallel conversion unit is also used for performing serial-to-parallel conversion of each group, so that a corresponding high bit word and low bit word in the group can be obtained; the carrier signal generator is used for respectively performing key control of a nonlinear Chrip modulator and a FSK modulator according to the low bit word and the high bit word in the group; the carrier signal generator performs cascade operation of a first-level generated signal and a second-level generated signal generated after key control, so that a corresponding modulated signal is obtained; and the modulated signal is converted into an acoustic signal through an output device. The invention further provides an acoustic communication method. By means of the acoustic communication system and method disclosed by the invention, due to cascade modulation of the nonlinear Chrip modulator and the FSK modulator, the instantaneous frequency of the modulated signal changes up and down in a certain range; and thus, the information transmission rate also can be increased.

Description

Technical field [0001] The present invention relates to the field of communication technology, in particular to an acoustic wave communication system and method. Background technique [0002] With the advent of the mobile Internet era and the extensive provision of audio user interfaces (such as microphones and speakers), acoustic wave communication technology based on air channels is becoming more and more widely used. Compared with traditional wireless communication technologies such as WiFi and Bluetooth, the advantages of using sound waves for data transmission are mainly convenience and low cost. However, the data distance of the existing acoustic wave communication is relatively limited, the transmission rate is low (only up to 16bit / s), and when the communication distance is slightly longer, the bit error rate of the data transmission will also increase significantly. Summary of the invention [0003] In view of the above, it is necessary to provide an acoustic wave commun...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/00H04L27/10H04B11/00
CPCH04B11/00H04L1/0058
Inventor 骆志坤姚彬
Owner 武汉果冻网络科技有限公司
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