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Coding and decoding method and device for acoustic wave communication

A technology of sound wave communication and coding method, which is applied in the field of communication codec, which can solve the problems of not considering the interference of sound wave signal noise, the interference of sound wave signal noise frequency, and unreliable data transmission, so as to improve reliability and resist noise interference , the effect of improving reliability

Active Publication Date: 2017-01-18
FUJIAN STAR NET COMM
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Problems solved by technology

[0003] In the existing technology, the problem that the sound wave signal is easily disturbed by noise is not considered. If a set of frequencies is simply used to encode the data, the generated sound wave signal is easily disturbed by the noise frequency, resulting in data transmission in practical applications. unreliable

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  • Coding and decoding method and device for acoustic wave communication
  • Coding and decoding method and device for acoustic wave communication
  • Coding and decoding method and device for acoustic wave communication

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Embodiment Construction

[0051] In order to describe the technical content, structural features, achieved goals and effects of the present invention in detail, the following will be described in detail in conjunction with the embodiments and accompanying drawings.

[0052] see figure 1 , is a flow chart of the encoding method for acoustic wave communication according to an embodiment of the present invention. The encoding method of the acoustic wave communication includes the following steps:

[0053] S11. Split the data to be encoded to obtain several data units;

[0054] This embodiment determines the set of all data units that may be involved in communication, (a1, a2, ..., an), that is, all data to be sent will only appear in this set of data units, where n The number of data units that may be involved.

[0055]S12. For a data unit, modulate the data unit with its corresponding modulation frequency in each communication frequency band to generate a data waveform. The data unit has a modulation ...

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Abstract

The invention discloses a sound wave communication coding method. The sound wave communication coding method comprises the steps of obtaining a plurality of data units; for one data unit, modulating the data unit with the modulation frequency corresponding to the data unit in each communication frequency band to generate data waveforms, wherein one modulation frequency corresponds to the data unit at any communication frequency band, the number of the communication frequency bands is m, and the m is a positive integer larger than or equal to 2. The invention further discloses a frequency modulation decoding method corresponding to the frequency modulation coding method and a coding and decoding device. By using a plurality of sets of frequency codes, data reliability is effectively improved, and reflected wave interference is avoided through the frequency deviation operation.

Description

technical field [0001] The present invention relates to the technical field of communication encoding and decoding, and more particularly relates to a method and device for encoding and decoding acoustic wave communication. Background technique [0002] At present, sound wave communication has been widely popularized in electronic device application systems such as iOS and Android, and its specific applications include Alipay's sound wave payment, Xiaomi Express, etc. The principle of sound wave communication is actually relatively simple. It mainly uses fixed-frequency sound signals to encode data, and then plays these fixed-frequency sounds. After the receiver collects the sound data, it recognizes the frequency information contained in it, and then decodes it according to the frequency. out the data. For example: we can correspond the sine wave with frequency f0 to the number 0, the sine wave with frequency f1 to the number 1, the sine wave with frequency f2 to the numbe...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B11/00H04L1/00
Inventor 张功振吴振文
Owner FUJIAN STAR NET COMM
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