CN111371466A - Communication method, device and system capable of improving communication rate in unit time - Google Patents
Communication method, device and system capable of improving communication rate in unit time Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/0003—Software-defined radio [SDR] systems, i.e. systems wherein components typically implemented in hardware, e.g. filters or modulators/demodulators, are implented using software, e.g. by involving an AD or DA conversion stage such that at least part of the signal processing is performed in the digital domain
- H04B1/0028—Software-defined radio [SDR] systems, i.e. systems wherein components typically implemented in hardware, e.g. filters or modulators/demodulators, are implented using software, e.g. by involving an AD or DA conversion stage such that at least part of the signal processing is performed in the digital domain wherein the AD/DA conversion occurs at baseband stage
- H04B1/0039—Software-defined radio [SDR] systems, i.e. systems wherein components typically implemented in hardware, e.g. filters or modulators/demodulators, are implented using software, e.g. by involving an AD or DA conversion stage such that at least part of the signal processing is performed in the digital domain wherein the AD/DA conversion occurs at baseband stage using DSP [Digital Signal Processor] quadrature modulation and demodulation
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0002—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0002—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate
- H04L1/0003—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate by switching between different modulation schemes
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0036—Systems modifying transmission characteristics according to link quality, e.g. power backoff arrangements specific to the receiver
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Abstract
The invention discloses a communication method, a device and a system capable of improving communication rate in unit time. The method applied to the transmitting end comprises the following steps: carrying out frequency multiplication processing on the base frequency signal to obtain at least one frequency multiplication signal; carrying out amplitude modulation on the fundamental frequency signal and at least one frequency multiplication signal by using data to be transmitted to obtain at least two modulated signals; and sending the data to be transmitted based on at least two modulated signals, so that at least two bits of data are transmitted at the same time. The invention superposes different data on signals with different frequencies on the basis of not changing the bus communication frequency between the devices, thereby improving the frequency spectrum utilization rate, transmitting data with at least two bits by using at least two frequencies at the same time and improving the communication speed in unit time.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a communication method, apparatus, and system capable of increasing a communication rate per unit time.
Background
With the rapid development of electrical equipment, communications between electrical equipment are increasing, and in order to meet the communication demand, the communication speed of communication lines needs to be increased.
The current common method is to increase the bus communication frequency to achieve an increase in the communication rate per unit time. However, the increase of the communication frequency causes problems such as an increase in interference, an increase in wire material demand, and a reduction in communication distance, and the increase of the frequency is limited when the communication distance is constant.
Disclosure of Invention
Embodiments of the present invention provide a communication method, apparatus, and system capable of increasing a communication rate per unit time, so as to solve a problem of how to increase a bus communication rate in the prior art.
In order to solve the foregoing technical problem, an embodiment of the present invention provides a communication method, where the method is applied to a sending end, and the method includes: carrying out frequency multiplication processing on the base frequency signal to obtain at least one frequency multiplication signal; carrying out amplitude modulation on the fundamental frequency signal and at least one frequency multiplication signal by using data to be transmitted to obtain at least two modulated signals; and sending the data to be transmitted based on at least two modulated signals, so that at least two bits of data are transmitted at the same time.
Optionally, amplitude modulation is performed on the fundamental frequency signal and the at least one frequency multiplication signal by using data to be transmitted, so as to obtain at least two modulated signals, including: acquiring data of preset bits from the data to be transmitted each time, wherein the value of the preset bits is equal to the total number of the signals of the fundamental frequency signal and the at least one frequency doubling signal; and sequentially superposing the data of the preset bits on the fundamental frequency signal and the at least one frequency multiplication signal according to a preset sequence, and carrying out amplitude modulation to obtain at least two modulated signals.
Optionally, the superimposing the data of the preset bits to the fundamental frequency signal and the at least one frequency multiplication signal in sequence according to a preset sequence, and performing amplitude modulation includes: sequentially using the data of the preset bits as amplitude modulation signals of the fundamental frequency signal and at least one frequency multiplication signal according to the preset sequence; if the data is 1, modulating the amplitude of the signal with the corresponding frequency to be a first preset value; and if the data is 0, modulating the amplitude of the signal with the corresponding frequency to be a second preset value.
Optionally, sending the data to be transmitted based on at least two modulated signals includes: synthesizing at least two modulated signals on a time domain to obtain a digital waveform sequence; and sending the data to be transmitted based on the digital waveform sequence.
Optionally, sending the data to be transmitted based on the digital waveform sequence includes: converting the sequence of digital waveforms to an analog signal; and transmitting the analog signal to a receiving end by using a communication line between the receiving end and the analog signal.
The embodiment of the invention also provides a communication method, which is applied to a receiving end and comprises the following steps: carrying out Fourier transform on a received signal according to a preset signal frequency to obtain sinusoidal signals of at least two frequencies, wherein data of at least two bits are transmitted in the received signal at the same time; and analyzing the sinusoidal signals of the at least two frequencies according to a preset rule to obtain data contained in the received signals.
Optionally, performing fourier transform on the received signal to obtain sinusoidal signals of at least two frequencies, including: converting the received signal to a digital signal; and carrying out Fourier transform on the digital signal to obtain sinusoidal signals of at least two frequencies.
Optionally, analyzing the sinusoidal signals of the at least two frequencies according to a preset rule to obtain data included in the received signal, including: acquiring the amplitude of a signal of each frequency in the sinusoidal signals of the at least two frequencies; if the amplitude is a first preset value, analyzing the data of the corresponding bit to be 1; and if the amplitude is a second preset value, analyzing the data of the corresponding bit to be 0.
An embodiment of the present invention further provides a communication apparatus, including: the signal generating module is used for generating a base frequency signal and obtaining at least one frequency multiplication signal according to the base frequency signal; the modulation processing module is connected to the signal generation module and is used for performing amplitude modulation on the fundamental frequency signal and the at least one frequency multiplication signal by using data to be transmitted to obtain at least two modulated signals; and the sending module is connected to the modulation processing module and used for sending the data to be transmitted based on at least two modulated signals so as to transmit the data of at least two bits at the same time.
Optionally, the signal generating module includes: a fundamental frequency generator for generating the fundamental frequency signal; at least one frequency multiplier connected to the base frequency generator for performing frequency multiplication processing on the base frequency signal according to the corresponding frequency multiplication factor to obtain a frequency multiplied signal of the corresponding frequency; when two or more frequency multipliers are included, the frequency multiplication multiple of each frequency multiplier is different.
Optionally, the modulation processing module includes: the number of the selectors is equal to the sum of the numbers of the fundamental frequency generators and the frequency multipliers, and the at least two selectors are respectively connected with the fundamental frequency generators and the at least one frequency multiplier in a one-to-one correspondence mode.
Optionally, the selector includes a first input port, a second input port, and an output port; each selector is respectively connected with the fundamental frequency generator and at least one frequency multiplier in a one-to-one correspondence mode through respective first input ports; each selector is connected to the data port through a respective second input port to receive data; each selector outputs signals after amplitude modulation through respective output ports; if the data is 1, modulating the amplitude of the signal with the corresponding frequency to be a first preset value; and if the data is 0, modulating the amplitude of the signal with the corresponding frequency to be a second preset value.
Optionally, the sending module includes: and the adder is connected to the modulation processing module and used for synthesizing at least two modulated signals on a time domain to obtain a digital waveform sequence.
Optionally, the sending module further includes: and the digital-to-analog converter is connected to the adder and the communication line and is used for converting the digital waveform sequence into an analog signal and outputting the analog signal to the communication line.
An embodiment of the present invention further provides a communication apparatus, including: the device comprises a Fourier transform module, a data acquisition module and a data transmission module, wherein the Fourier transform module is used for carrying out Fourier transform on a received signal according to a preset signal frequency to obtain sinusoidal signals with at least two frequencies, and at least two bits of data are transmitted in the received signal at the same time; and the main control module is connected to the Fourier transform module and used for analyzing the sinusoidal signals of the at least two frequencies according to a preset rule to obtain data contained in the received signals.
Optionally, the apparatus further comprises: and the analog-to-digital converter is connected to the communication line and the Fourier transform module and is used for converting the signals received through the communication line into digital signals and sending the digital signals to the Fourier transform module.
Optionally, the main control module includes: the acquisition unit is used for acquiring the amplitude of each frequency signal in the sinusoidal signals of the at least two frequencies; and the analyzing unit is connected to the acquiring unit and used for analyzing the data of the corresponding bit to be 1 if the amplitude is a first preset value, and analyzing the data of the corresponding bit to be 0 if the amplitude is a second preset value.
An embodiment of the present invention further provides a communication system, including: a sending end and a receiving end; the sending end comprises the communication device in the third embodiment of the invention; the receiving end includes the communication apparatus according to the fourth embodiment of the present invention.
Embodiments of the present invention further provide a computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements the communication method according to the first embodiment of the present invention, or implements the communication method according to the second embodiment of the present invention.
By applying the technical scheme of the invention, the frequency multiplication processing is carried out on the fundamental frequency signal to obtain at least one frequency multiplication signal; and carrying out amplitude modulation on the base frequency signal and the at least one frequency doubling signal by using the data to be transmitted, and sending the data to be transmitted based on the modulated signals so as to transmit the data of at least two bits at the same time. On the basis of not changing the bus communication frequency between the devices, different data are superposed on signals with different frequencies, so that the frequency spectrum utilization rate is improved, at least two bits of data can be transmitted by using at least two frequencies at the same time, and the communication rate in unit time is improved.
Drawings
Fig. 1 is a flowchart of a communication method according to an embodiment of the present invention;
FIG. 2 is a diagram of a digital waveform sequence provided in accordance with an embodiment of the present invention;
fig. 3 is a flowchart of a communication method according to a second embodiment of the present invention;
fig. 4 is a schematic structural diagram of a communication device according to a third embodiment of the present invention;
fig. 5 is a schematic structural diagram of a communication device according to a third embodiment of the present invention;
fig. 6 is a schematic structural diagram of a communication device according to a fourth embodiment of the present invention;
fig. 7 is a schematic structural diagram of a communication device according to a fourth embodiment of the present invention;
fig. 8 is a schematic diagram of a communication system according to a fifth embodiment of the present invention;
fig. 9 is a schematic frequency spectrum diagram of transmission data according to a seventh embodiment of the present invention;
fig. 10 is a schematic frequency spectrum diagram of received data according to a seventh embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings, and it is apparent that the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In consideration of the problems that the communication speed is improved by improving the bus communication frequency, which causes increased interference, high wire requirements, shortened communication distance and the like, the embodiment of the invention provides a communication scheme, and the communication speed in unit time can be improved without improving the communication frequency. The following description will be made in conjunction with examples.
Example one
The present embodiment provides a communication method, which is applied to a sending end (or called sending device), and can transmit data of at least two bits at the same time, thereby increasing a communication rate per unit time.
Fig. 1 is a flowchart of a communication method according to an embodiment of the present invention, as shown in fig. 1, the method includes the following steps:
and S101, performing frequency multiplication on the base frequency signal to obtain at least one frequency multiplication signal.
S102, amplitude modulation is carried out on the fundamental frequency signal and the at least one frequency doubling signal by using data to be transmitted, and at least two modulated signals are obtained.
S103, sending data to be transmitted based on the at least two modulated signals, so that the data of at least two bits are transmitted at the same time.
The base frequency refers to a reference frequency used for communication between a transmitting end and a receiving end. The frequency-doubled signal may be any frequency-doubled signal of the fundamental frequency, such as a frequency-2 signal, a frequency-3 signal, a frequency-4 signal, a frequency-7 signal, and so on. The signals with different frequencies are subjected to amplitude modulation by using the data to be transmitted, so that at least two bits of data can be transmitted by using the signals with different frequencies at the same time, and correspondingly, the receiving end can analyze the corresponding data through the amplitude values corresponding to the signals with different frequencies, thereby improving the communication rate of data transmission between the transmitting end and the receiving end.
In the communication method of this embodiment, a frequency multiplication process is performed on a base frequency signal to obtain at least one frequency multiplication signal; and carrying out amplitude modulation on the base frequency signal and the at least one frequency doubling signal by using the data to be transmitted, and sending the data to be transmitted based on the modulated signals so as to transmit the data of at least two bits at the same time. On the basis of not changing the bus communication frequency between the devices, different data are superposed on signals with different frequencies, so that the frequency spectrum utilization rate is improved, at least two bits of data can be transmitted by using at least two frequencies at the same time, and the communication rate in unit time is improved.
It can be understood that, in the prior art, one data bit can only transmit 1-bit data, and the embodiment of the present invention superimposes data of at least two bits on one data bit in different frequency spectrums, so as to increase the information carrying capacity of a single data bit.
In an optional embodiment, amplitude-modulating the fundamental frequency signal and the at least one frequency-doubled signal by using data to be transmitted to obtain at least two modulated signals includes: acquiring data of preset bits from data to be transmitted each time, wherein the value of the preset bits is equal to the total number of signals of a fundamental frequency signal and at least one frequency doubling signal; and sequentially superposing the data of the preset bits on the fundamental frequency signal and the at least one frequency multiplication signal according to a preset sequence, and carrying out amplitude modulation to obtain at least two modulated signals.
In this optional embodiment, both the fundamental frequency signal and the at least one frequency doubling signal are used for transmitting data, and the amplitude of each signal is modulated in sequence by using data with the same number of bits as that of the signal every time, so that the modulated fundamental frequency signal and the frequency doubling signal can embody specific data.
Further, superimposing the data of the preset bits on the fundamental frequency signal and the at least one frequency multiplication signal in sequence according to a preset sequence, and performing amplitude modulation, including: sequentially using data of preset bits as amplitude modulation signals of a fundamental frequency signal and at least one frequency multiplication signal according to a preset sequence; if the data is 1, modulating the amplitude of the signal with the corresponding frequency to be a first preset value; and if the data is 0, modulating the amplitude of the signal with the corresponding frequency to be a second preset value.
Preferably, the first preset value is greater than the second preset value, and in the simplest case, the first preset value may be 1, and the second preset value may be 0.
Exemplarily, 2 frequency multiplication and 3 frequency multiplication are performed on the baseband signal respectively to obtain a 2 frequency multiplication signal and a 3 frequency multiplication signal, and at this time, the number of frequency signals used for data transmission is 3 in total, that is, the baseband signal, the 2 frequency multiplication signal and the 3 frequency multiplication signal. Each time, 3-bit data is acquired from the data to be transmitted, and the data is sequentially superimposed on the fundamental frequency signal, the 2-frequency multiplication signal and the 3-frequency multiplication signal, that is, amplitude modulation is performed by using the 3-bit data, for example, the 3-bit data is 010, the first preset value is 1, the second preset value is 0, the amplitude after modulation of the fundamental frequency signal is 0, the amplitude after modulation of the 2-frequency multiplication signal is 1, and the amplitude after modulation of the 3-frequency multiplication signal is 0. Accordingly, the receiving end analyzes the received signal according to the same rule to obtain the data 010, so that the data of at least two bits can be transmitted at the same time by using the frequency multiplication processing of the fundamental frequency signal, and the communication rate in unit time is improved.
In an optional embodiment, sending data to be transmitted based on at least two modulated signals includes: synthesizing at least two modulated signals on a time domain to obtain a digital waveform sequence; and transmitting the data to be transmitted based on the digital waveform sequence.
The modulated signal is actually a corresponding relationship between frequency and amplitude, for example, the amplitude of the fundamental frequency signal is 1, the amplitude of the 2-times frequency signal is 0, and the like. According to the sequence followed during modulation, the modulated signals are synthesized together according to the time attribute to obtain a digital waveform sequence, and the amplitude of the digital waveform sequence can embody the specific numerical value of the transmitted binary data. Illustratively, still taking the above-mentioned fundamental frequency signal, 2-frequency multiplied signal and 3-frequency multiplied signal as an example to transmit data, if the data transmitted at time T1 is 010, and the data transmitted at time T2 is 110, then the digital waveform sequence is as shown in fig. 2.
Specifically, sending data to be transmitted based on a digital waveform sequence includes: converting the digital waveform sequence into an analog signal; the analog signal is transmitted to the receiving end by using a communication line between the receiving end and the receiving end. This allows data to be transmitted smoothly in the form of analog signals via the communication line.
Example two
The present embodiment provides a communication method, which is applied to a receiving end (or called receiving device), and can transmit data of at least two bits at the same time, thereby increasing the communication rate per unit time. The same or corresponding technical terms as those in the first embodiment are not described again in this embodiment.
Fig. 3 is a flowchart of a communication method according to a second embodiment of the present invention, and as shown in fig. 3, the method includes the following steps:
s301, carrying out Fourier transform on the received signals according to a preset signal frequency to obtain at least two sinusoidal signals, wherein the received signals transmit data of at least two bits at the same time.
S302, analyzing the sinusoidal signals of at least two frequencies according to a preset rule to obtain data contained in the received signals.
The preset signal frequency refers to a frequency for transmitting data, which is agreed by the receiving end and the transmitting end. Any signal can be seen as a superposition of at least two sinusoids. The received signal is subjected to fourier transform (i.e., fourier decomposition) according to a preset signal frequency, and an intensity component at a signal frequency corresponding to the signal frequency used by the transmitting end for transmitting data can be obtained. The data content carried by these signals can then be obtained by parsing them.
In the communication method of this embodiment, at least two bits of data are transmitted at the same time in a received signal, a receiving end performs fourier transform on the received signal according to a preset signal frequency, and analyzes a sinusoidal signal of at least two frequencies obtained by the transform according to a preset rule, so as to obtain data included in the received signal. On the basis of not changing the bus communication frequency between the devices, different data are superposed on signals with different frequencies, so that the frequency spectrum utilization rate is improved, at least two bits of data can be transmitted by using at least two frequencies at the same time, and the communication rate in unit time is improved.
Optionally, performing fourier transform on the received signal to obtain sinusoidal signals of at least two frequencies, including: converting the received signal into a digital signal; and carrying out Fourier transform on the digital signal to obtain sinusoidal signals of at least two frequencies. In this embodiment, analog-to-digital conversion is performed on the received analog signal, and then fourier transform is performed, so that a corresponding signal frequency and amplitude can be obtained, and subsequent smooth analysis is ensured.
Optionally, analyzing the sinusoidal signals of at least two frequencies according to a preset rule to obtain data included in the received signals, including: acquiring the amplitude of a signal of each frequency in sinusoidal signals of at least two frequencies; if the amplitude is a first preset value, analyzing the data of the corresponding bit to be 1; and if the amplitude is a second preset value, resolving the data of the corresponding bit into 0. Therefore, data analysis is carried out through the rule corresponding to the data sent by the sending end, and smooth transmission and correct analysis of the data are achieved on the basis of improving the communication rate.
EXAMPLE III
The present embodiment provides a communication apparatus, which can be used to implement the communication method on the transmitting end side described in the first embodiment. As shown in fig. 4, the apparatus includes:
the signal generating module 10 is configured to generate a base frequency signal and obtain at least one frequency multiplication signal according to the base frequency signal;
the modulation processing module 20 is connected to the signal generation module, and is configured to perform amplitude modulation on the fundamental frequency signal and the at least one frequency doubling signal by using data to be transmitted to obtain at least two modulated signals;
and a sending module 30, connected to the modulation processing module, for sending data to be transmitted based on the at least two modulated signals, so that at least two bits of data are transmitted at the same time.
In the communication device of this embodiment, a signal generation module obtains a baseband signal and at least one frequency multiplication signal; carrying out amplitude modulation on the base frequency signal and at least one frequency doubling signal by using data to be transmitted through a modulation processing module; and sending the data to be transmitted based on the modulated signal through a sending module, so that the data of at least two bits are transmitted at the same time. On the basis of not changing the bus communication frequency between the devices, different data are superposed on signals with different frequencies, so that the frequency spectrum utilization rate is improved, at least two bits of data can be transmitted by using at least two frequencies at the same time, and the communication rate in unit time is improved.
Alternatively, referring to fig. 5, the signal generating module 10 includes:
a fundamental frequency generator 11 for generating a fundamental frequency signal;
and the at least one frequency multiplier 12 is connected to the base frequency generator 11 and is used for carrying out frequency multiplication on the base frequency signal according to the corresponding frequency multiplication factor to obtain a frequency multiplication signal with the corresponding frequency.
When two or more frequency multipliers are included, the multiplication factor of each frequency multiplier is different.
Optionally, the modulation processing module 20 includes: the number of the selectors is equal to the sum of the numbers of the fundamental frequency generators and the frequency multipliers, and the at least two selectors are respectively connected with the fundamental frequency generators and the at least one frequency multiplier in a one-to-one correspondence mode.
Specifically, the selector includes a first input port, a second input port, and an output port; each selector is respectively connected with the base frequency generator and the at least one frequency multiplier in a one-to-one correspondence mode through respective first input ports; each selector is connected to a data port a (also referred to as data input port) through a respective second input port to receive data; each selector outputs signals after amplitude modulation through respective output ports; if the data is 1, modulating the amplitude of the signal with the corresponding frequency to be a first preset value; and if the data is 0, modulating the amplitude of the signal with the corresponding frequency to be a second preset value. The data is thus used as an amplitude modulated signal of frequency, the amplitude of which is modulated so that the signal carries the data.
Optionally, the sending module 30 includes: and the adder 31 is connected to the modulation processing module 20, and is configured to synthesize at least two modulated signals in a time domain to obtain a digital waveform sequence. Any selector outputs signals with corresponding frequency and amplitude, and the adder synthesizes the frequency output by each selector on a time domain to obtain a digital waveform sequence.
Optionally, the sending module 30 further includes: the digital-to-analog converter 32 is connected to the adder 31 and the communication line 40, and is configured to convert the digital waveform sequence into an analog signal and output the analog signal to the communication line.
It should be noted that the fundamental frequency generator, the frequency multiplier, the selector, the adder, and the digital-to-analog converter may be used in any suitable type according to the requirement, or the above functions may be integrated in the same chip.
Example four
This embodiment provides a communication apparatus, which can be used to implement the communication method on the receiving end side described in the second embodiment. As shown in fig. 6, the apparatus includes:
a fourier transform module 50, configured to perform fourier transform on a received signal according to a preset signal frequency to obtain a sinusoidal signal with at least two frequencies, where at least two bits of data are transmitted in the received signal at the same time;
and the main control module 60 is connected to the fourier transform module 50, and configured to analyze the sinusoidal signals with at least two frequencies according to a preset rule, so as to obtain data included in the received signals.
In the communication device of this embodiment, data of at least two bits are transmitted at the same time in a received signal, fourier transform is performed on the received signal by the fourier transform module according to a preset signal frequency, and a sinusoidal signal of at least two frequencies obtained by the transform is analyzed by the main control module according to a preset rule, so as to obtain data included in the received signal. On the basis of not changing the bus communication frequency between the devices, different data are superposed on signals with different frequencies, so that the frequency spectrum utilization rate is improved, at least two bits of data can be transmitted by using at least two frequencies at the same time, and the communication rate in unit time is improved.
Optionally, referring to fig. 7, the apparatus further includes: and an analog-to-digital converter 70 connected to the communication line 40 and the fourier transform module 50, for converting the signal received through the communication line into a digital signal and transmitting the digital signal to the fourier transform module.
Optionally, the main control module 60 includes: the acquisition unit is used for acquiring the amplitude of each frequency signal in the sinusoidal signals of at least two frequencies; and the analysis unit is connected to the acquisition unit and used for analyzing the data of the corresponding bit to be 1 if the amplitude is a first preset value, and analyzing the data of the corresponding bit to be 0 if the amplitude is a second preset value.
EXAMPLE five
The present embodiment provides a communication system, as shown in fig. 8, the system including: a transmitting end 100 and a receiving end 200. The sending end and the receiving end are connected through a communication line. The transmitting end includes the communication apparatus described in the third embodiment. The receiving end includes the communication apparatus described in the fourth embodiment.
The communication system of the embodiment superimposes different data on signals with different frequencies on the basis of not changing the bus communication frequency between the devices, so that the frequency spectrum utilization rate is improved, at least two bits of data can be transmitted by using at least two frequencies at the same time, and the communication rate in unit time is improved.
In practical applications, a device may include both the communication apparatus for transmitting described in the third embodiment and the communication apparatus for receiving described in the fourth embodiment, that is, the device has both transmitting and receiving functions.
EXAMPLE six
The present embodiment provides a computer-readable storage medium, on which a computer program is stored, which when executed by a processor implements the method as described in the first embodiment above, or implements the method as described in the second embodiment above.
EXAMPLE seven
The above communication method is described below with reference to a specific example, however, it should be noted that this specific embodiment is only for better describing the present application and should not be construed as a limitation to the present application. In the spectrograms shown in fig. 9 and 10, the horizontal axis represents frequency and the vertical axis represents amplitude.
Referring to fig. 5 and 9, the frequency output by the baseband generator 11 is multiplied by 3, 5 and 7 times by 3 frequency multipliers 12, respectively, and input to the corresponding selector 21, and each time 4 bits of data are input from the data input port, each bit is used as a gating signal of the corresponding selector 21. Any one of the 4 selectors 21 is gated to input a corresponding frequency to the adder 31, and the adder 31 combines a plurality of input frequencies in the time domain into a digital waveform sequence, and inputs the digital waveform sequence to the digital-to-analog converter 32(DAC), and the digital-to-analog converter 32 converts the digital waveform sequence into an electrical signal and outputs the electrical signal to the communication line 40. As shown in fig. 9, the transmitted data is 1011, the 3-times frequency signal is modulated, the amplitude thereof is 0, and the selector corresponding to the 3-times frequency signal does not output 3-times frequency, and there is no 3-times frequency in the frequency spectrum synthesized by the adder.
Referring to fig. 7 and 10, an analog-to-digital converter (ADC) 70 collects a voltage signal on the communication line 40, inputs the voltage signal into the fourier transform module 50 for processing, and obtains intensity components of different frequencies, specifically, decomposes the signal into sinusoidal signals of frequencies 1, 3, 5, and 7, and inputs the sinusoidal signals into the main control module 60, and the main control module 60 determines amplitudes of the sinusoidal signals decomposed into frequencies 1, 3, 5, and 7, respectively, where the amplitudes may be 1 and 0 in this example, i.e., determines whether a signal of each frequency exists, if so, data of a corresponding bit is 1, and if not, data of the corresponding bit is 0, so that the data is analyzed. As shown in fig. 10, if 3-fold frequencies do not exist in the spectrum of the signal after fourier transform, data of the corresponding bit is resolved to 0.
In summary, different from the way that the existing receiver receives the square wave and determines 0 and 1, the embodiment of the present invention superimposes different data on different frequencies by performing frequency multiplication on the communication fundamental frequency, so that the time for transmitting one bit of data in the prior art can transmit at least two bits of data, thereby improving the spectrum utilization rate; data are transmitted through at least two frequencies in unit time, corresponding data content is analyzed according to the amplitude of the frequencies, the communication speed in unit time is improved, and the communication speed is improved under the condition that the bus communication frequency is not changed.
The above-described embodiments of the apparatus are merely illustrative, and the units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment.
Through the above description of the embodiments, those skilled in the art will clearly understand that each embodiment can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware. With this understanding in mind, the above-described technical solutions may be embodied in the form of a software product, which can be stored in a computer-readable storage medium such as ROM/RAM, magnetic disk, optical disk, etc., and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the methods described in the embodiments or some parts of the embodiments.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (19)
1. A communication method, applied to a transmitting end, the method comprising:
carrying out frequency multiplication processing on the base frequency signal to obtain at least one frequency multiplication signal;
carrying out amplitude modulation on the fundamental frequency signal and at least one frequency multiplication signal by using data to be transmitted to obtain at least two modulated signals;
and sending the data to be transmitted based on at least two modulated signals, so that at least two bits of data are transmitted at the same time.
2. The method of claim 1, wherein amplitude modulating the fundamental frequency signal and the at least one frequency-doubled signal with data to be transmitted to obtain at least two modulated signals comprises:
acquiring data of preset bits from the data to be transmitted each time, wherein the value of the preset bits is equal to the total number of the signals of the fundamental frequency signal and the at least one frequency doubling signal;
and sequentially superposing the data of the preset bits on the fundamental frequency signal and the at least one frequency multiplication signal according to a preset sequence, and carrying out amplitude modulation to obtain at least two modulated signals.
3. The method according to claim 2, wherein superimposing the predetermined bits of data onto the fundamental frequency signal and at least one of the frequency-doubled signals in a predetermined order for amplitude modulation comprises:
sequentially using the data of the preset bits as amplitude modulation signals of the fundamental frequency signal and at least one frequency multiplication signal according to the preset sequence;
if the data is 1, modulating the amplitude of the signal with the corresponding frequency to be a first preset value;
and if the data is 0, modulating the amplitude of the signal with the corresponding frequency to be a second preset value.
4. The method of claim 1, wherein sending the data to be transmitted based on at least two of the modulated signals comprises:
synthesizing at least two modulated signals on a time domain to obtain a digital waveform sequence;
and sending the data to be transmitted based on the digital waveform sequence.
5. The method of claim 4, wherein sending the data to be transmitted based on the sequence of digital waveforms comprises:
converting the sequence of digital waveforms to an analog signal;
and transmitting the analog signal to a receiving end by using a communication line between the receiving end and the analog signal.
6. A communication method, applied to a receiving end, the method comprising:
carrying out Fourier transform on a received signal according to a preset signal frequency to obtain sinusoidal signals of at least two frequencies, wherein data of at least two bits are transmitted in the received signal at the same time;
and analyzing the sinusoidal signals of the at least two frequencies according to a preset rule to obtain data contained in the received signals.
7. The method of claim 6, wherein fourier transforming the received signal to obtain sinusoidal signals at least two frequencies comprises:
converting the received signal to a digital signal;
and carrying out Fourier transform on the digital signal to obtain sinusoidal signals of at least two frequencies.
8. The method of claim 6, wherein analyzing the sinusoidal signals of the at least two frequencies according to a predetermined rule to obtain data contained in the received signal comprises:
acquiring the amplitude of a signal of each frequency in the sinusoidal signals of the at least two frequencies;
if the amplitude is a first preset value, analyzing the data of the corresponding bit to be 1;
and if the amplitude is a second preset value, analyzing the data of the corresponding bit to be 0.
9. A communications apparatus, comprising:
the signal generating module is used for generating a base frequency signal and obtaining at least one frequency multiplication signal according to the base frequency signal;
the modulation processing module is connected to the signal generation module and is used for performing amplitude modulation on the fundamental frequency signal and the at least one frequency multiplication signal by using data to be transmitted to obtain at least two modulated signals;
and the sending module is connected to the modulation processing module and used for sending the data to be transmitted based on at least two modulated signals so as to transmit the data of at least two bits at the same time.
10. The apparatus of claim 9, wherein the signal generation module comprises:
a fundamental frequency generator for generating the fundamental frequency signal;
at least one frequency multiplier connected to the base frequency generator for performing frequency multiplication processing on the base frequency signal according to the corresponding frequency multiplication factor to obtain a frequency multiplied signal of the corresponding frequency;
when two or more frequency multipliers are included, the frequency multiplication multiple of each frequency multiplier is different.
11. The apparatus of claim 10, wherein the modulation processing module comprises: the number of the selectors is equal to the sum of the numbers of the fundamental frequency generators and the frequency multipliers, and the at least two selectors are respectively connected with the fundamental frequency generators and the at least one frequency multiplier in a one-to-one correspondence mode.
12. The apparatus of claim 11, wherein the selector comprises a first input port, a second input port, and an output port;
each selector is respectively connected with the fundamental frequency generator and at least one frequency multiplier in a one-to-one correspondence mode through respective first input ports;
each selector is connected to the data port through a respective second input port to receive data;
each selector outputs signals after amplitude modulation through respective output ports;
if the data is 1, modulating the amplitude of the signal with the corresponding frequency to be a first preset value; and if the data is 0, modulating the amplitude of the signal with the corresponding frequency to be a second preset value.
13. The apparatus of claim 9, wherein the sending module comprises:
and the adder is connected to the modulation processing module and used for synthesizing at least two modulated signals on a time domain to obtain a digital waveform sequence.
14. The apparatus of claim 13, wherein the sending module further comprises:
and the digital-to-analog converter is connected to the adder and the communication line and is used for converting the digital waveform sequence into an analog signal and outputting the analog signal to the communication line.
15. A communications apparatus, comprising:
the device comprises a Fourier transform module, a data acquisition module and a data transmission module, wherein the Fourier transform module is used for carrying out Fourier transform on a received signal according to a preset signal frequency to obtain sinusoidal signals with at least two frequencies, and at least two bits of data are transmitted in the received signal at the same time;
and the main control module is connected to the Fourier transform module and used for analyzing the sinusoidal signals of the at least two frequencies according to a preset rule to obtain data contained in the received signals.
16. The apparatus of claim 15, further comprising:
and the analog-to-digital converter is connected to the communication line and the Fourier transform module and is used for converting the signals received through the communication line into digital signals and sending the digital signals to the Fourier transform module.
17. The apparatus of claim 15, wherein the master module comprises:
the acquisition unit is used for acquiring the amplitude of each frequency signal in the sinusoidal signals of the at least two frequencies;
and the analyzing unit is connected to the acquiring unit and used for analyzing the data of the corresponding bit to be 1 if the amplitude is a first preset value, and analyzing the data of the corresponding bit to be 0 if the amplitude is a second preset value.
18. A communication system, comprising: a sending end and a receiving end;
the transmitting end comprising the communication apparatus of any one of claims 9 to 14;
the receiving end comprising the communication device of any of claims 15 to 17.
19. A computer-readable storage medium on which a computer program is stored, which program, when executed by a processor, implements a communication method according to any one of claims 1 to 5 or implements a communication method according to any one of claims 6 to 8.
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