Wireless communication method and system based on sound wave coded modulation

Abstract

The invention discloses a wireless communication method and system based on sound wave coded modulation. The method comprises the following steps: a transmitting end performs sound source coding on information to be transmitted to obtain a sound wave signal; modulating, filtering and amplifying an analog electric signal corresponding to the sound wave signal, and then converting the analog electric signal into a wireless radio frequency signal for emission; the receiving end demodulates, filters and amplifies the received wireless radio frequency signal to obtain an original sound wave signal; and carrying out harmony decomposition, discrimination and sound source matching on the original sound wave signal to obtain original transmission information. The scheme can improve the information transmission efficiency.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of wireless communication, and particularly relates to a wireless communication method and system based on acoustic wave coding modulation, a computing device and a storage medium. BACKGROUND

[0002] The Shannon capacity theorem gives the upper limit of the information transmission rate of a channel and the relationship between the channel signal-to-noise ratio and the bandwidth. That is, the capacity of the channel is proportional to the bandwidth and proportional to the logarithm of the signal-to-noise ratio.

[0003] In wireless communication, in order to improve the spectrum utilization and data transmission efficiency, high-speed data streams are usually divided into multiple low-speed data streams for parallel transmission through OFDM (Orthogonal Frequency Division Multiplexing), and each low-speed data stream is transmitted on a different orthogonal subcarrier, so that the interference between different subcarriers is reduced to a minimum, and the multipath effect can be effectively offset.

[0004] Figure 1 A schematic diagram of a conventional OFDM transmission process is shown. As shown in Figure 1 OFDM transmission process can be divided into two parts of a sending end and a receiving end. In the sending end, the high-speed data stream (0-1 bit stream) to be sent is input into the OFDM system; the input high-speed data stream is divided and interleaved to convert into multiple low-speed parallel data streams, completing the serial-parallel conversion, and these parallel data streams will be mapped to different subcarriers for transmission; each parallel data stream is digitally modulated (for example, QAM or PSK) to generate a complex value symbol for each subcarrier; the complex value symbols of all subcarriers are subjected to inverse fast Fourier transform (IFFT) to convert the frequency domain signal into a time domain signal, and the result of IFFT is an OFDM symbol, which contains the time domain signals of all subcarriers superimposed together; in order to resist the inter-symbol interference caused by multipath propagation, a cyclic prefix (CP) is added in front of each OFDM symbol, which is usually a copy of the end of the OFDM symbol to the front end, and the length of the cyclic prefix is generally greater than the maximum delay spread of the channel; the parallel time domain signal containing the cyclic prefix is converted back to a serial signal for subsequent transmission; finally, the digital signal is converted into an analog signal (DAC), and the signal is sent to the wireless channel through radio frequency processing (frequency conversion, filtering and amplification).

[0005] At the receiving end, the received radio frequency signal is converted into a baseband analog signal after frequency conversion, filtering and amplification processing, and is converted into a digital signal through an analog-to-digital converter (ADC); the received serial digital signal is converted into a parallel signal, ready for OFDM demodulation; the cyclic prefix is removed from each received OFDM symbol to restore the original OFDM symbol; the time domain signal after the cyclic prefix is removed is subjected to fast Fourier transform (FFT) to convert the time domain signal back to a frequency domain signal, obtaining a complex value symbol on each subcarrier; channel estimation is performed based on known pilot signals or other methods, and then each subcarrier is equalized to compensate for fading and phase offset in the channel; the equalized complex value symbol is demodulated (QAM inverse mapping) to restore the original bit stream; the parallel bit stream is converted back to a serial data stream; finally, the demodulated data is output, completing the entire OFDM transmission process.

[0006] QAM (Quadrature Amplitude Modulation) is a method of transmitting data by changing the amplitude and phase of the carrier signal. First, the input bits are mapped to a complex plane (constellation) to form a complex modulation symbol, then the I component (real part of the complex plane) and Q component (imaginary part of the complex plane) of the complex modulation symbol are amplitude modulated, corresponding to two orthogonal carriers cos(ωt) and sin(ωt) in the time domain; finally, the two modulated signals are superimposed to form the final QAM signal: S(t) = (I 2 + Q 2 ) 1 / 2 cos(ωt+Φ), where Φ = arctan(I / Q), the QAM signal is sent through the channel. This vector modulation simultaneously utilizes the amplitude and phase of the carrier to transmit information, so under the condition of the same minimum distance, it can achieve higher spectral efficiency, and the more the number of mapped constellation points, the higher the spectral efficiency. For example, a 16-QAM signal with 16 constellation points, each transmission of a constellation point (I+jQ) is equivalent to the transmission of 4 0 / 1 bits, and each transmission of a QAM-4096 constellation point is equivalent to the transmission of 12 0 / 1 bits.

[0007] In the above OFDM transmission process, the selection of the cyclic prefix (CP) plays a key role in simplifying the compensation of frequency offset and avoiding the impact of multipath effects on data, but the cyclic prefix occupies a certain system bandwidth, usually 15-20% of the system bandwidth, which to some extent sacrifices spectral efficiency. Moreover, the QAM modulation method is limited by the Shannon capacity limit theorem, and as the number of constellation points increases, the sensitivity to noise and distortion also increases, and higher-order QAM modulation and demodulation require more complex hardware and higher computing power.

[0008] It can be seen that the traditional OFDM transmission process and QAM modulation method are suitable for processing linear information, and the 0-1 digitization processing and QAM modulation are not the optimal processing mode for the information represented by the two-dimensional pictographic character. The information representation and communication principle of Shannon is no longer suitable for the information recording and transmission based on the two-dimensional ideographic Chinese characters. SUMMARY

[0009] In order to solve the problems in the background art, the present application provides a wireless communication method and system based on sound wave coding modulation, which takes sound wave as the carrier and expression of information, and can improve the signal interference resistance and signal transmission efficiency by accurately selecting the frequency, sound and sound source characteristics.

[0010] According to a first aspect of the present application, a wireless communication method based on sound wave coding modulation is provided, comprising: a transmitting end performing sound source coding on the information to be transmitted to obtain a sound wave signal; modulating, filtering and amplifying the analog electric signal corresponding to the sound wave signal to convert it into a wireless radio frequency signal for transmission; a receiving end performing demodulation, filtering and amplification on the received wireless radio frequency signal to obtain an original sound wave signal; and performing sound decomposition, discrimination and sound source matching on the original sound wave signal to obtain the original transmission information.

[0011] The above technical solution takes the sound wave signal as the information carrier and information expression mode, maps the information to be transmitted into the sound source characteristics, uses the different frequency and amplitude modulation of the sound source to increase the bandwidth utilization rate of the channel, and can improve the anti-interference ability of the transmission signal in the multipath interference and complex electromagnetic environment, and reduce the cost and complexity of the communication system.

[0012] Optionally, in the wireless communication method based on sound wave coding modulation provided by the present application, the information to be transmitted is source coded and channel encrypted to form a fuze of a sound source array, each sound source in the sound source array is uniquely determined by a single frequency, loudness and serial number; and the corresponding sound source is triggered to sound according to a preset time sequence to obtain a sound wave signal.

[0013] The above technical solution can accurately control the characteristics of the sound wave signal by setting a unique frequency, loudness and serial number for each sound source, can produce a preset sound field effect by triggering the sound source according to a preset time sequence, and can customize the sound wave coding signal according to different application requirements, such as the sound of a whale, a cricket, a firecracker, etc.

[0014] Optionally, in the wireless communication method based on sound wave coding modulation provided by the present application, the continuous change physical signal in the information to be transmitted is sampled and quantized to obtain a digital signal; the image, video and text in the information to be transmitted are quantized into vectors; and the digital signal and the vector are directly mapped to the corresponding sound source in the sound source array, so as to represent the corresponding vector by the sound emitted by the sound source; or After the digital signal and the vector are converted into a binary sequence, the binary sequence is grouped according to a preset bit number, each group of bits is mapped to a specific QAM constellation point, and a modulated constellation point is obtained; and the constellation point is subjected to permutation and encryption processing, and the encrypted data is mapped to a corresponding sound source in a sound source array.

[0015] The technical solution can improve the anti-interference capability of the signal by uniformly processing various types of transmission data and modulating the bandwidth, and can customize the sound generation mode of the sound source according to needs, which makes the system applicable to various scenes and needs.

[0016] Optionally, in the wireless communication method based on sound wave coding modulation provided by the application, the pixels in the image and video frame are quantized to obtain a pixel vector; and each word, sentence or ideographic character in the text is mapped to a vector in a high-dimensional space based on a natural language processing model.

[0017] Optionally, in the wireless communication method based on sound wave coding modulation provided by the application, the sound wave signal is converted into a corresponding analog electric signal through a pickup; the analog electric signal is modulated into one or more carrier signals, filtered through a band-pass filter and amplified through a power amplifier, and then transmitted to an antenna for wireless transmission to the air.

[0018] Optionally, in the wireless communication method based on sound wave coding modulation provided by the application, the receiving end antenna captures the radio frequency signal emitted by the sending end, the radio frequency signal is mixed with a local carrier signal through a mixer to convert the radio frequency signal into a baseband signal; the baseband signal is filtered through a low-pass filter and demodulated, and the original analog electric signal is extracted from the filtered baseband signal; and the original analog electric signal is amplified through a loudspeaker and then converted into an original sound wave signal.

[0019] Optionally, in the wireless communication method based on sound wave coding modulation provided by the application, the original sound wave signal is decomposed into a mixed signal of fundamental frequency and harmonics through Fourier transform; a single-tone sound source is separated from the mixed signal based on a principal component analysis method; and the characteristics of the separated single-tone sound source are matched with a preset sound source model to determine the original transmission information corresponding to the sound source.

[0020] According to a second aspect of the application, a wireless communication system based on sound wave coding modulation is provided, which comprises a wireless sending module and a wireless receiving module, the wireless sending module comprises a sound source coding unit and a modulation unit, and the wireless receiving module comprises a demodulation unit and a sound source decoding unit.

[0021] The sound source coding unit is used for coding the information to be transmitted to obtain a sound wave signal; the modulation unit is used for modulating, filtering and amplifying the analog electric signal corresponding to the sound wave signal to convert it into a wireless radio frequency signal for emission; the demodulation unit is used for demodulating, filtering and amplifying the received wireless radio frequency signal to obtain the original sound wave signal; and the sound source decoding unit is used for and sound decomposition, discrimination and sound source matching of the original sound wave signal to obtain the original transmission information.

[0022] According to a third aspect of the present application, a computing device is provided, comprising: at least one processor; and a memory storing program instructions configured to be executed by the at least one processor, the program instructions comprising instructions for performing the method of wireless communication based on sound wave coding modulation according to the first aspect of the present application.

[0023] According to a fourth aspect of the present application, a readable storage medium storing program instructions is provided, which, when read and executed by a computing device, causes the computing device to perform the method of wireless communication based on sound wave coding modulation according to the first aspect of the present application.

[0024] The method and system of wireless communication based on sound wave coding modulation provided by the present application utilize sound wave as information carrier and expression for data transmission, and allow more information to be transmitted within limited frequency spectrum resources by coding and decoding the single frequency and amplitude characteristics of sound sources, which is particularly important in crowded wireless environment. By accurately selecting the frequency, sound and sound source characteristics, the signal interference resistance and signal transmission efficiency can be improved.

[0025] The above description is only a summary of the technical solutions of the present application. In order to enable one of ordinary skill in the art to better understand the technical means of the present application and implement it according to the content of the description, and in order to enable the above and other purposes, features and advantages of the present application to be more apparent and understandable, the specific embodiments of the present application are described below. BRIEF DESCRIPTION OF DRAWINGS

[0026] Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The accompanying drawings are included to provide a better understanding of the preferred embodiments, and are not to be considered as limitations on the present application. Moreover, in the drawings, like reference numerals refer to same or similar components throughout the several views. In the drawings: Figure 1 A schematic diagram of a conventional OFDM transmission process is shown; Figure 2 A structural diagram of a computing device 100 according to an embodiment of the present application is shown; Figure 3 A schematic diagram of a method 300 of wireless communication based on sound wave coding modulation according to an embodiment of the present application is shown; Figure 4 A QAM modulation constellation diagram is shown according to one embodiment of the present application; Figure 5 A sound source encoding diagram is shown according to one embodiment of the present application; Figure 6 A sound signal transmission flow diagram of a single carrier wireless transmission system is shown according to one embodiment of the present application; Figure 7 A signal transmission flow diagram of a multi-carrier sound modulation wireless transmission system is shown according to one embodiment of the present application; Figure 8 A signal transmission flow diagram of a single carrier wireless receiving system is shown according to one embodiment of the present application; Figure 9 A signal transmission flow diagram of a multi-carrier wireless receiving system is shown according to one embodiment of the present application; Figure 10 A structure diagram of a wireless communication system 900 based on sound wave encoding modulation according to one embodiment of the present application is shown. DETAILED DESCRIPTION

[0027] Exemplary embodiments of the present disclosure will be described more fully hereinafter with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it is understood that the present disclosure can be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the present disclosure to those skilled in the art.

[0028] The wireless communication method based on sound wave encoding modulation provided by the present application uses sound waves as the carrier and expression of information, and realizes the transmission and reception of data through the conversion of analog electrical signals and radio frequency signals, which can be applied to underwater communication or complex electromagnetic environments requiring penetration of obstacles.

[0029] Figure 2 A structure diagram of a computing device 100 according to one embodiment of the present application is shown. As shown, the computing device 100 can include a memory 106 and a processor 104. A memory bus 108 can be used for communication between the processor 104 and the system memory 106. Figure 2

[0030] The memory 106 can include an operating system 120, an application 122, and program data 124. The application 122 can be arranged to execute instructions on the operating system by one or more processors 104 using the program data 124. The application 122 includes program instructions for implementing various user desired functions.

[0031] ​When the computing device 100 is in operation, the processor 104 is configured to read instructions from the memory 106 and execute these instructions to perform the operations for which the computing device 100 was designed. The application 122 is an example of programmatic code loaded into the computing device 100, which programs use to implement various functions of the computing device 100. The application 122 when launched is loaded from the storage device 132 into the memory 106 and executed by the processor 104 utilizing the operating system 120 running on the computing device 100.

[0032] The computing device 100 also includes a storage device 132 that is configured to store the operating system 120, the application 122, and other types of information that are useful to the operation of the computing device 100. The storage device 132 is connected to the storage interface bus 134. The computing device 100 also includes an output device 142 such as a display that is configured to present information in a format that can be understood by a user of the computing device 100. The computing device 100 also includes an interface bus 140 that is configured to facilitate communication from various interface devices (e.g., the output device 142, the peripheral interface 144, and the communication device 146) to the bus / interface controller 130.

[0033] The peripheral interface 144 can include a serial interface controller 154 or a parallel interface controller 156, which can be configured to facilitate communication to or from external devices via one or more I / O ports 158, such as input devices (e.g., keyboard, mouse, pen, voice input device, touch input device) or other peripheral devices (e.g., printer, scanner, etc.). The communication device 146 can include a network controller 160 that can be arranged to facilitate communications with one or more other computing devices 162 over a network communication link. In the computing device 100 according to the present application, the application 122 includes instructions for performing the method 300 of wireless communication based on acoustic wave encoding modulation according to the present application.

[0034] Figure 3 A flow diagram of the method 300 of wireless communication based on acoustic wave encoding modulation according to one embodiment of the present application is shown. As shown, the method begins at step S310, where the transmitting end encodes the information to be transmitted to obtain an acoustic wave signal. Figure 3

[0035] In one embodiment of the present application, the information to be transmitted is source encoded and channel encrypted to form a source array, where each source in the source array is uniquely determined by a single frequency, loudness, and sequence number. Then, the corresponding sources are triggered to emit sound according to a preset time sequence to obtain the acoustic wave signal.

[0036] The information to be transmitted can be in any form or combination of forms, such as a symbol, a character, an image, a video, a voice, etc. Continuous physical signals such as a voice, a temperature, and a humidity can be first sampled and quantized to obtain a digital signal. The image, the video, and the text in the information to be transmitted can be quantized to a vector.

[0037] ​Wherein, the pixels in the image and video frame are quantized to obtain a pixel vector. For semantic text, scene text and the like, the internal meaning of the text needs to be understood and inferred or the external environment and context of the text needs to be considered, instead of just the literal words. Each word, sentence or ideographic character in the text can be mapped to a vector in a high-dimensional space based on a natural language processing model, so as to retain the semantic relationship between the words. Each character (such as a Chinese character, a hiragana character in Japanese, a hanja character in Korean, etc.) has a unique code. Then, the digital signal and the vector are directly mapped to the corresponding sound sources in the sound source array, so as to represent the corresponding vector by the sound emitted by the sound sources.

[0038] The digital signal and the vector can also be converted into a binary sequence, grouped according to a preset number of bits, and each group of bits is mapped to a specific QAM constellation point to obtain a modulated constellation point. The constellation point is subjected to permutation and encryption processing, and the encrypted data is mapped to the corresponding sound sources in the sound source array.

[0039] Figure 4 A QAM modulation constellation diagram according to an embodiment of the present application is shown. As shown in Figure 4 , the QAM modulation maps each group of 6 bits to a point in a QAM constellation diagram (the horizontal coordinate is the I channel, and the vertical coordinate is the Q channel). The QAM constellation diagram is an array of complex points formed on an orthogonal base, and each point of the QAM constellation diagram represents a possible signal state. These symbols can be further transmitted, encoded and modulated to adapt to specific channel characteristics and communication requirements.

[0040] The constellation point is subjected to permutation and encryption processing, and the encrypted data is mapped to the corresponding sound sources in the sound source array. The permutation operation can increase the confusion and security of the data.

[0041] The sound source array is a group of micro loudspeakers or microphones for receiving and sending sound signals, and each sound source represents a number or a corresponding 0-1 bit number. The number of sound sources can be determined according to the complexity of the transmitted information, such as 64, 128, 256, 512, 1024, 2048, 4096, 8192, etc. 2n. The arrangement of the sound source array is a two-dimensional or three-dimensional geometric shape, such as a triangular, circular, trapezoidal or other geometric form, which is not limited in the present scheme.

[0042] Figure 5 A sound source encoding schematic diagram according to an embodiment of the present application is shown. As shown in Figure 5 , the 0-1 sequence is subjected to scrambling to obtain binary codes 0000, 0001,..., 1111. Each code corresponds to a fuse C(0), C(1),..., C(15) of a sound source.

[0043] Each sound source can be detonated at a specific frequency and loudness; for example, the k-th sonic cannon detonates at t. i The waveform of the detonation at a specific time can be represented as TB(k, f). k L k , t i The harmony of 16 sonic cannons is ΣTB(k, f). k L k , t i If we select 16 sound sources with single-tone frequencies of f0, f1, ..., f15, then the interval between adjacent frequencies is 4158 Hz. This ensures a reasonable allocation and effective utilization of frequencies under specific audio conditions.

[0044] Then, step S220 is executed, which modulates, filters, and amplifies the analog electrical signal corresponding to the sound wave signal and converts it into a wireless radio frequency signal for transmission.

[0045] The sound wave signal modulated by a single tone and a voice can be converted into a corresponding analog electrical signal S(t) by a microphone. Then, the analog electrical signal S(t) is modulated into one or more carrier signals, filtered by a bandpass filter and amplified by an amplifier before being transmitted wirelessly to the air by an antenna.

[0046] Figure 6 A schematic diagram of the signal transmission process of a single-carrier wireless transmission system according to an embodiment of the present invention is shown. The single-carrier wireless transmission system uses a single-frequency carrier signal to transmit data. For example... Figure 6 As shown, the source is first encoded and modulated to obtain QAM constellation points. Then, the channel is encrypted and encoded, and the encrypted data is mapped onto the sound source array to form a sound wave signal. The sound wave signal is converted into an analog electrical signal S(t) by a microphone. Then, the analog electrical signal S(t) is modulated into a carrier signal LOF, filtered by a bandpass filter (BPF), amplified by a power amplifier, and then transmitted wirelessly to the antenna.

[0047] Figure 7 A schematic diagram of the signal transmission process of a multi-carrier wireless transmission system according to an embodiment of the present invention is shown. The multi-carrier wireless transmission system divides the signal into multiple narrowband subcarriers and uses each subcarrier to transmit data. Multiple carrier frequencies are continuously distributed across the spectrum, with each frequency carrying a portion of the data, resulting in high transmission speed and spectral efficiency. Figure 7 As shown, the source is first encoded and modulated to obtain QAM constellation points. Then, the channel is encrypted and encoded, and the encrypted data is mapped onto the sound source array to form multiple sound wave signals. These multiple sound wave signals are then converted into analog electrical signals S0(t), S1(t), ... S by a microphone. N (t), and then the analog electrical signals S0(t), S1(t)... SN (t) modulating to carrier signals LOF0, LOF1... LOF N The filtered and amplified signal is transmitted to the antenna for wireless transmission to the air.

[0048] Then, step S230 is performed, and the received wireless radio frequency signal is demodulated, filtered and amplified to obtain the original sound wave signal.

[0049] Specifically, the receiving end antenna captures the radio frequency signal emitted by the sending end, and the radio frequency signal is mixed with the local carrier signal through the mixer to convert the radio frequency signal into a baseband signal. The baseband signal is filtered through the low-pass filter and demodulated, and the original analog electrical signal is extracted from the filtered baseband signal. Finally, the original analog electrical signal is amplified through the loudspeaker and converted into a sound wave signal.

[0050] Figure 8 A signal transmission flow diagram of a single-carrier wireless receiving system according to an embodiment of the present application is shown. As shown in Figure 8 The receiving end antenna captures the radio frequency signal emitted by the sending end, and the radio frequency signal is mixed with the local carrier signal through the mixer to convert the radio frequency signal into a baseband signal. The mixer mixes the received radio frequency signal with a signal of a frequency close to the local frequency to generate an intermediate frequency signal. After mixing, the radio frequency signal is converted into a baseband signal.

[0051] The baseband signal is filtered through the low-pass filter LPF and demodulated to remove the high-frequency components in the baseband signal. The filtered baseband signal is demodulated to extract the original analog electrical signal, which is in a form that can be amplified and output by the loudspeaker or other audio equipment. The original analog electrical signal is amplified through the loudspeaker and converted into a sound wave signal.

[0052] Figure 9 A signal transmission flow diagram of a multi-carrier wireless receiving system according to an embodiment of the present application is shown. As shown in Figure 9 The multi-carrier wireless receiving system divides the entire bandwidth into multiple narrow sub-carrier frequency bands LO F0... LO F N Each sub-carrier frequency band independently transmits data or signals. This segmentation can significantly improve the spectral efficiency, and each sub-carrier can be dynamically allocated according to the communication requirements.

[0053] Finally, step S240 is performed to perform sound decomposition, discrimination and sound source matching on the original sound wave signal to obtain the original transmission information.

[0054] Harmony is the sound effect of multiple notes played simultaneously in music, while harmonics refer to waveforms that repeat within a period, with frequencies that are integer multiples of the fundamental frequency. In one embodiment of the present invention, the original sound wave signal can be decomposed into a mixed signal of the fundamental frequency and harmonics using a Fourier transform. The Fourier transform converts the signal from the time domain to the frequency domain, displaying the intensity and phase information of each frequency component in the signal. The combination of these frequency components forms the spectral representation of the original sound wave signal.

[0055] Principal component analysis (PCA) is used to separate individual sound sources from a mixed signal. For example, the spectral data obtained from Fourier transform is used as input to construct a mixed signal matrix, where each column represents a signal at a specific time or frequency. Using PCA or other appropriate signal separation techniques, the mixed signal matrix is ​​decomposed into eigenvectors and eigenvalues. Based on the magnitude of the eigenvalues, the most dominant components are selected; these components correspond to independent sound sources, thus separating the different sound source signals.

[0056] Finally, the separated sound sources are matched with the preset sound source model to determine the original transmission information corresponding to the sound source.

[0057] Figure 10 A schematic diagram of a wireless communication system 900 based on acoustic wave coding modulation according to an embodiment of the present invention is shown. Figure 10 As shown, the system 900 includes a wireless transmitting module 910 and a wireless receiving module 920. The wireless transmitting module 910 includes a sound source encoding unit 911 and a modulation unit 912, and the wireless receiving module 920 includes a demodulation unit 921 and a sound source decoding unit 922.

[0058] The sound source encoding unit 911 can encode the information to be transmitted to obtain a sound wave signal. The modulation unit 912 can modulate, filter, and amplify the analog electrical signal corresponding to the sound wave signal and then convert it into a wireless radio frequency signal for transmission.

[0059] The demodulation unit 921 can demodulate, filter, and amplify the received wireless radio frequency signal to obtain the original sound wave signal. The sound source decoding unit 922 can perform harmony decomposition, discrimination, and sound source matching on the original sound wave signal to obtain the original transmission information.

[0060] The wireless communication method and system based on acoustic wave coding modulation provided by the present invention utilizes acoustic waves as information carriers for data transmission. By encoding and decoding the frequency and amplitude characteristics of the sound source, more information can be transmitted within limited spectrum resources, which is especially important in congested wireless environments. By accurately selecting the frequency, sound, and sound source characteristics, the anti-interference capability and signal transmission efficiency of the signal can be improved.

[0061] In the description provided herein, numerous specific details are set forth. However, it is understood that embodiments of the application can be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description.

[0062] It will be appreciated by persons skilled in the art that modules, or units, or components of the devices in the examples disclosed herein can be arranged in a device as described in the examples, or alternatively can be located in one or more devices different from the devices in the examples. Modules in the foregoing examples can be combined into a module or further divided into multiple sub-modules.

[0063] Although some of the embodiments described herein comprise some features of other embodiments described herein, combinations of features of the described embodiments are not meant to be excluded unless otherwise indicated. Combinations of different embodiments' features are meant to be within the scope of the application and form different embodiments.

[0064] Furthermore, some of the embodiments described herein are of a "method" or a "process" that can be embodied in computer executable code that can be accessed through a processor of a computer system. Accordingly, those skilled in the art will appreciate that the embodiments described herein which are implemented by software and / or hardware can be virtualized and implemented by a processing circuit or other computing component within a virtual computing instance. Furthermore, some of the embodiments described herein are of a "method" or a "process" that can be embodied in computer executable code that can be accessed through a processor of a computer system. Accordingly, those skilled in the art will appreciate that the embodiments described herein which are implemented by software and / or hardware can be virtualized and implemented by a processing circuit or other computing component within a virtual computing instance.

[0065] Although the application has been described and illustrated with respect to a limited number of embodiments, those skilled in the art will appreciate that other embodiments can be devised which fall within the scope of the application as described by the claims appended hereto. It is to be understood that the language used in the specification has been principally selected for readability and instructional purposes and can not have been selected to erroneously limit the scope of the present application. Accordingly, the disclosure of the present application is intended to be illustrative, but not limiting, of the scope of the application, which is set forth in the following claims.

Claims

1. A wireless communication method based on acoustic wave coding modulation, characterized by, The method comprises the following steps: The transmitting end encodes the to-be-transmitted information to obtain a sound wave signal; The analog electric signal corresponding to the sound wave signal is modulated, filtered, and amplified, and then converted into a wireless radio frequency signal for transmission; The receiving end demodulates, filters, and amplifies the received wireless radio frequency signal to obtain an original sound wave signal; The original sound wave signal is decomposed, distinguished, and matched with a sound source to obtain the original transmission information.

2. The wireless communication method based on acoustic wave coding modulation according to claim 1, wherein, The step of encoding the to-be-transmitted information by the transmitting end to obtain a sound wave signal comprises the following steps: The to-be-transmitted information is source-encoded and channel-encrypted to form a fuse of a sound source array, wherein each sound source in the sound source array is uniquely determined by a single audio frequency, loudness, and serial number; According to a preset time sequence, the corresponding sound source is triggered to emit a sound to obtain a sound wave signal.

3. The wireless communication method based on acoustic wave coding modulation according to claim 2, wherein, The step of source-encoding and channel-encrypting the to-be-transmitted information to form a fuse of a sound source array comprises the following steps: The continuous change of the physical signal in the to-be-transmitted information is sampled and quantized to obtain a digital signal; The image, video, and text in the to-be-transmitted information are quantized into vectors; The digital signal and the vector are directly mapped to the corresponding sound source in the sound source array, so that the sound emitted by the sound source represents the corresponding vector; or The digital signal and the vector are converted into a binary sequence, then grouped according to a preset bit number, and each group of bits is mapped to a specific QAM constellation point to obtain a modulated constellation point; The constellation point is permuted and encrypted, and the encrypted data is mapped to the corresponding sound source in the sound source array.

4. The wireless communication method based on acoustic wave coding modulation according to claim 3, wherein, The step of quantizing the image, video, and text in the to-be-transmitted information into vectors comprises the following steps: The pixels in the image and video frames are quantized to obtain pixel vectors; Based on a natural language processing model, each word, sentence, or ideographic character in the text is mapped to a vector in a high-dimensional space.

5. The wireless communication method based on acoustic wave coding modulation according to claim 1, wherein, The step of modulating, filtering, and amplifying the analog electric signal corresponding to the sound wave signal to convert it into a wireless radio frequency signal for transmission comprises the following steps: The sound wave signal is converted into a corresponding analog electric signal through a pickup; The analog electric signal is modulated into one or more carrier signals, filtered through a band-pass filter, and amplified through a power amplifier, and then transmitted to an antenna for wireless transmission into the air.

6. The wireless communication method based on acoustic wave coding modulation according to claim 1, wherein, The step of demodulating, filtering, and amplifying the received wireless radio frequency signal to obtain an original sound wave signal by the receiving end comprises the following steps: The receiving end antenna captures the radio frequency signal emitted by the transmitting end, and the radio frequency signal is mixed with a local carrier signal through a mixer to convert the radio frequency signal into a baseband signal; The baseband signal is filtered through a low-pass filter and demodulated, and the original analog electric signal is extracted from the filtered baseband signal; The original analog electric signal is amplified through a loudspeaker and then converted into an original sound wave signal.

7. The wireless communication method based on acoustic wave coding modulation according to claim 1, wherein, The step of decomposing, distinguishing, and matching the original sound wave signal with a sound source to obtain the original transmission information comprises the following steps: The original sound wave signal is decomposed into a mixed signal of fundamental frequency and harmonics through Fourier transform; Based on a principal component analysis method, a single-tone sound source is separated from the mixed signal; The separated single-tone sound source features are matched with a preset sound source model to determine the original transmission information corresponding to the sound source.

8. A wireless communication system based on acoustic wave coding modulation, characterized by The method comprises the following steps: a wireless transmitting module and a wireless receiving module, the wireless transmitting module comprising a sound source encoding unit and a modulating unit, the wireless receiving module comprising a demodulating unit and a sound source decoding unit, the sound source encoding unit is configured to encode the information to be transmitted into a sound wave signal; the modulating unit is configured to modulate, filter and amplify an analog electrical signal corresponding to the sound wave signal and convert the analog electrical signal into a wireless radio frequency signal for transmission; the demodulating unit is configured to demodulate, filter and amplify the received wireless radio frequency signal to obtain an original sound wave signal; the sound source decoding unit is configured to decompose, discriminate and match the original sound wave signal to obtain the original transmission information.

9. A computing device comprising: at least one processor; and a memory having stored program instructions configured to be adapted for execution by the at least one processor, the program instructions comprising instructions for performing the method of wireless communication based on sound wave encoding modulation as claimed in any one of claims 1-7.

10. A readable storage medium having stored program instructions, which when read and executed by a computing device, cause the computing device to perform the method of wireless communication based on sound wave encoding modulation as claimed in any one of claims 1-7.

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