CN113507296B - Communication method, communication apparatus, storage medium, and electronic device - Google Patents
Communication method, communication apparatus, storage medium, and electronic device Download PDFInfo
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- CN113507296B CN113507296B CN202111070309.4A CN202111070309A CN113507296B CN 113507296 B CN113507296 B CN 113507296B CN 202111070309 A CN202111070309 A CN 202111070309A CN 113507296 B CN113507296 B CN 113507296B
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- H04B1/69—Spread spectrum techniques
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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
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- H04B2001/6912—Spread spectrum techniques using chirp
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Abstract
The disclosure relates to a communication method, a communication device, a storage medium and electronic equipment, and solves the technical problem of low transmission rate when data is carried by frequency shift CSS modulation in a frequency shift mode for data transmission. The method comprises the following steps: determining indication bit information corresponding to each group of symbols according to a plurality of groups of symbols needing parallel transmission in data to be transmitted, wherein the indication bit information is used for indicating the time domain sequence of each symbol in the group of symbols needing parallel transmission in the data to be transmitted; and sending a time domain signal to a receiving end according to the data to be transmitted and the indication bit information corresponding to each group of symbols, so that the receiving end can obtain transmission data according to the time domain signal. The data transmission is carried out by adopting a partial symbol parallel transmission mode, and the transmission rate is improved under the condition of not reducing the performance of carrying out data transmission by using linear frequency modulation.
Description
Technical Field
The present disclosure relates to the field of communication transmission technologies, and in particular, to a communication method, an apparatus, a storage medium, and an electronic device.
Background
Chirp spread spectrum modulation (CSS) is a communication technology for data transmission by using linear frequency modulation, and has strong multipath and narrow-band interference resistance. In order to increase the transmission rate of CSS modulation in the related art, data is generally carried by means of frequency shifting.
Traditional frequency shift CSS modulation mainly uses a symbol serial transmission method, and the number of bits that a symbol can carry is related to a spreading factor. For example, the transmitting end first transmits symbol 1, then transmits symbol 2, and then transmits the last symbol N, and the spreading factor is proportional to the number of bits carried by one symbol, and each time the spreading factor is increased by one, the number of bits carried by each symbol is also increased by one bit. With each increase in the spreading factor, the transmission time doubles, which in turn results in a lower transmission rate.
Disclosure of Invention
An object of the present disclosure is to provide a communication method, apparatus, storage medium, and electronic device that improve the transmission rate without degrading the performance of data transmission using linear frequency modulation.
In order to achieve the above object, in a first aspect, the present disclosure provides a communication method applied to a transmitting end, where the method includes:
determining indication bit information corresponding to each group of symbols according to a plurality of groups of symbols needing parallel transmission in data to be transmitted, wherein the indication bit information is used for indicating the time domain sequence of each symbol in the group of symbols needing parallel transmission in the data to be transmitted;
and sending a time domain signal to a receiving end according to the data to be transmitted and the indication bit information corresponding to each group of symbols, so that the receiving end can obtain transmission data according to the time domain signal.
Optionally, the indicating bit information includes the number of indicating bits, and the determining, according to multiple groups of symbols to be transmitted in parallel in the data to be transmitted, the indicating bit information corresponding to each group of symbols includes:
for each group of symbols, determining a total number of symbols in the group of symbols;
obtaining the factorial value of the total number of the symbols, and calculating an exponent to obtain a middle value;
and carrying out ceil function calculation on the intermediate value to obtain the number of the indicating bits corresponding to the group of symbols.
Optionally, before transmitting the time domain signal to the receiving end, the method further includes: and carrying out phase rotation on each symbol in a plurality of groups of symbols needing parallel transmission in the data to be transmitted.
Optionally, the sending, to a receiving end, a time domain signal according to the data to be transmitted and the indication bit information corresponding to each group of symbols includes:
and under the condition that the data to be transmitted comprises a channel code or the transmitting end comprises an interleaver, storing the indication bit information corresponding to each group of symbols in a first symbol in the data to be transmitted, and transmitting a time domain signal to a receiving end.
Optionally, the sending, to a receiving end, a time domain signal according to the data to be transmitted and the indication bit information corresponding to each group of symbols includes:
under the condition that the data to be transmitted does not comprise a channel code and the transmitting end does not comprise an interleaver, storing the indication bit information corresponding to each group of symbols in a first symbol of the data to be transmitted, and transmitting a time domain signal to a receiving end, or
And storing the indication bit information corresponding to each group of symbols in each symbol of each group of symbols corresponding to the indication bit information, and sending a time domain signal to a receiving end.
In a second aspect, the present disclosure provides a communication method applied to a receiving end, where the method includes:
synchronously receiving a time domain signal sent by a sending end;
de-spreading and fast Fourier transforming the time domain signal to obtain a frequency domain signal corresponding to the time domain signal;
determining a plurality of peak values of the frequency domain signal, and demodulating each peak value respectively to obtain a plurality of symbols and indicating bit information;
and determining the time domain sequence of each symbol according to the indication bit information, and obtaining transmission data according to the time domain sequence.
In a third aspect, the present disclosure provides a communication apparatus applied to a transmitting end, where the apparatus includes:
the control module is configured to determine, according to a plurality of groups of symbols to be transmitted in parallel in data to be transmitted, indication bit information corresponding to each group of symbols, where the indication bit information is used to indicate a time domain sequence of each symbol in the group of symbols to be transmitted in parallel in the data to be transmitted;
and the sending module is configured to send a time domain signal to a receiving end according to the data to be transmitted and the indication bit information corresponding to each group of symbols, so that the receiving end obtains transmission data according to the time domain signal.
In a fourth aspect, the present disclosure provides a communication apparatus, applied to a receiving end, the apparatus including:
the receiving module is configured to synchronously receive a time domain signal sent by a sending end;
a first executing module configured to perform despreading and fast fourier transform on the time domain signal to obtain a frequency domain signal corresponding to the time domain signal;
a second execution module configured to determine a plurality of peaks of the frequency domain signal, and demodulate each of the peaks respectively to obtain a plurality of symbols and indicator bit information;
and the processing module is configured to determine a time domain sequence of each symbol according to the indication bit information, and obtain transmission data according to the time domain sequence.
In a fifth aspect, the present disclosure provides a computer readable storage medium having stored thereon a computer program which, when executed by a processor, performs the steps of the method of the first aspect or the steps of the method of the second aspect.
In a sixth aspect, the present disclosure provides an electronic device comprising:
a memory having a computer program stored thereon;
a processor for executing all computer programs in said memory to implement the steps of the method of the first aspect or the steps of the method of the second aspect.
According to the technical scheme, the indication bit information corresponding to each group of symbols is determined according to a plurality of groups of symbols needing parallel transmission in the data to be transmitted, and the indication bit information is used for indicating the time domain sequence of each symbol in the group of symbols needing parallel transmission in the data to be transmitted; and sending a time domain signal to the receiving end according to the data to be transmitted and the indication bit information corresponding to each group of symbols, so that the receiving end can obtain the transmission data according to the time domain signal. The data transmission is carried out by adopting a partial symbol parallel transmission mode, and the transmission rate is improved under the condition of not reducing the performance of carrying out data transmission by using linear frequency modulation. The data transmission method and the data transmission device can realize the parallel transmission of data of a single user and can also realize the simultaneous transmission of data among a plurality of users.
Additional features and advantages of the disclosure will be set forth in the detailed description which follows.
Drawings
The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the description serve to explain the disclosure without limiting the disclosure. In the drawings:
fig. 1 is a flow chart illustrating a communication method applied to a transmitting end in accordance with an example embodiment;
FIG. 2 is a schematic diagram illustrating a serial transmission communication method in accordance with an exemplary embodiment;
fig. 3 is a diagram illustrating a communication method applied to a transmitting end according to an example embodiment;
FIG. 4 is a flow chart illustrating a communication method applied to a receiving end in accordance with an example embodiment;
fig. 5 is a line graph illustrating frequency index values for one communication method applied to a receiving end according to an example embodiment;
fig. 6 is a line graph illustrating another frequency index value for a communication method applied to a receiving end according to an example embodiment;
fig. 7 is a block diagram illustrating a communication apparatus applied to a transmitting end in accordance with an example embodiment;
fig. 8 is a block diagram illustrating a communication apparatus applied to a receiving end according to an example embodiment;
FIG. 9 is a block diagram illustrating an electronic device in accordance with an exemplary embodiment;
FIG. 10 is a block diagram illustrating another electronic device in accordance with an example embodiment.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the exemplary embodiments below are not intended to represent all implementations consistent with the present disclosure.
It should be noted that in the present disclosure, the terms "S101", "S102" and the like in the description and claims and the drawings are used for distinguishing the steps, and are not necessarily to be construed as performing the method steps in a specific order or sequence.
The following detailed description of specific embodiments of the present disclosure is provided in connection with the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present disclosure, are given by way of illustration and explanation only, not limitation.
As background art, Chirp spread spectrum modulation (CSS) is a communication technique for data transmission using linear frequency modulation, and has strong resistance to multipath and narrowband interference. In order to increase the transmission rate of CSS modulation in the related art, data is generally carried by means of frequency shifting.
Referring to fig. 2, the conventional frequency shift CSS modulation mainly uses a symbol serial transmission method, and the number of bits that a symbol can carry is related to a spreading factor. For example, the transmitting end first transmits a symbol 1, then transmits a symbol 2, and then transmits a symbol N until the last symbol N, and for a spreading factor SF =10, 10 bits can be transmitted for one symbol, but the transmission time is 2SFT, where T is the sampling period. It can be seen that the spreading factor is proportional to the number of bits carried by one symbol, and for each increase of 1 in the spreading factor, the number of bits carried by each symbol is also increased by 1 bit. With each increase of the spreading factor by 1, the transmission time is doubled, which in turn results in a lower transmission rate.
In view of this, the present disclosure provides a communication method, an apparatus, a storage medium, and an electronic device, in which a sending end transmits data to a receiving end in a manner of parallel transmitting a part of symbols in data to be transmitted, so as to improve a data transmission rate between the sending end and the receiving end without reducing data transmission performance.
Fig. 1 is a flowchart illustrating a communication method applied to a transmitting end according to an exemplary embodiment, and the method includes:
in step S101, according to a plurality of groups of symbols to be transmitted in parallel in data to be transmitted, indication bit information corresponding to each group of symbols is determined, where the indication bit information is used to indicate a time domain sequence of each symbol in the group of symbols to be transmitted in parallel in the data to be transmitted.
In step S102, a time domain signal is sent to the receiving end according to the data to be transmitted and the indication bit information corresponding to each group of symbols, so that the receiving end obtains the transmission data according to the time domain signal.
In the data transmission process, the indication bit information of each group of symbols is determined through a plurality of groups of symbols needing parallel transmission in the data to be transmitted, time domain signals are sent to a receiving end according to the data to be transmitted and the indication bit information corresponding to each group of symbols, the data is transmitted to the receiving end in a partial symbol parallel transmission mode in the data transmission, and under the condition that the data transmission performance is not reduced, the data transmission rate between a transmitting end and the receiving end is improved, namely the parallel transmission of single user data is realized, and the simultaneous transmission of data among a plurality of users can also be realized.
For example, referring to fig. 3, in a data transmission process, data to be transmitted includes N symbols, a group of symbols to be transmitted in parallel are symbols 1 to M, and indication bit information X of the group of symbols, i.e., symbols 1 to M, is determined, where the indication bit information X is used to indicate a time domain sequence of symbols 1 to M in the group of symbols; and sending a time domain signal to a receiving end according to the N symbols and the indication bit information of each group of symbols which are required to be transmitted in parallel in the N symbols, such as the indication bit information X corresponding to the symbol 1 to the symbol M, so that the receiving end can obtain transmission data according to the time domain signal.
Thus, the original time for transmitting N symbols is N × Ts, and Ts is the transmission time of one symbol, because the present disclosure adopts (partial) parallel transmission, M (M is more than or equal to 1 and less than or equal to N) symbols are transmitted at one time, and the transmission time for transmitting N symbols is N × Ts/M. The data transmission rate between the sending end and the receiving end is improved under the condition that the data transmission performance is not reduced.
The above steps are exemplified in detail below in order to make the communication method provided by the present disclosure more understandable to those skilled in the art.
Due to parallel transmission, when a receiving end receives only a plurality of symbols, it does not know the transmission data of the plurality of symbols transmitted in parallel, therefore, additional indication bit information is needed to indicate the sequence of the symbols, thereby ensuring that the sequence of the transmission data is consistent with that of the transmitting end.
In an embodiment, the indication bit information includes an indication bit number, and the indication bit number corresponding to each group of symbols is determined according to a plurality of groups of symbols to be transmitted in parallel in the data to be transmitted, including;
for each group of symbols, determining a total number of symbols in the group of symbols;
obtaining a factorial value of the total number of the symbols, and calculating an exponent to obtain a middle value;
and carrying out ceil function calculation on the intermediate value to obtain the number of the indicating bits corresponding to the group of symbols.
For example, for each group of symbols, the total number of symbols in the group of symbols is determined to be M, and M is substituted into L = ceil (log (2 × M |) in the calculation formula, resulting in the number of indication bits corresponding to the group of symbols, thereby determining the time-domain order of the M symbols. For example, when M is 2, 1 indication bit is needed for indication; when M is 3, 3 indication bits are required for indication.
The frequency sequence (frequency index value) of each symbol is indicated through a plurality of indication bits, and each frequency index value corresponds to the time domain sequence of each symbol one by one, so that the time domain sequence of each symbol in the group of symbols needing to be transmitted in parallel in the data to be transmitted can be indicated through indication bit information.
The frequency index values may be arranged in order from small to large, that is, the first frequency index value is 0, the second frequency index value is 1, and so on, and the last frequency index value is 2（SF-1）And SF is a spreading factor. If the frequency index values in the M symbols are overlapped, the data transmitted by the two symbols are the same, and the transmission data received by the receiving end is not influenced by changing the arrangement sequence of the frequency index values.
In an embodiment, before transmitting the time domain signal to the receiving end, the method further includes: and carrying out phase rotation on each symbol in a plurality of groups of symbols needing parallel transmission in the data to be transmitted.
Referring to fig. 3, before sending the time domain signal to the receiving end, each symbol in each group of symbols that need to be transmitted in parallel in the transmission data is phase-rotated and then sent to the receiving end.
By rotating the phase of each symbol transmitted in parallel, the continuity of the phase of each symbol can be ensured, the power ratio of the peak value to the average value in the time domain signal can be reduced, and the communication transmission is realized.
In an embodiment, in step S102, sending a time domain signal to a receiving end according to data to be transmitted and indication bit information corresponding to each group of symbols, includes:
and under the condition that the data to be transmitted comprises a channel code or the transmitting end comprises an interleaver, storing the indication bit information corresponding to each group of symbols in the first symbol of the data to be transmitted, and transmitting a time domain signal to the receiving end.
In an embodiment, in step S102, sending a time domain signal to a receiving end according to data to be transmitted and indication bit information corresponding to each group of symbols, includes:
under the condition that the data to be transmitted does not comprise the channel code and the transmitting end does not comprise the interleaver, the indicating bit information corresponding to each group of symbols is stored in the first symbol of the data to be transmitted, and a time domain signal is transmitted to the receiving end, or
And storing the indication bit information corresponding to each group of symbols in each symbol of each group of symbols corresponding to the indication bit information, and sending a time domain signal to a receiving end.
The indication bit information is transmitted in various modes, so that the receiving end can acquire the indication bit information sent by the sending end, and the sequence of the symbols sent by the sending end is determined according to the indication bit information, so that the transmission data sent by the sending end is acquired.
Based on the same inventive concept, the present disclosure further provides a communication method applied to a receiving end, referring to fig. 4, the method includes:
in step S201, a time domain signal transmitted by a transmitting end is synchronously received.
In step S202, the time domain signal is despread and subjected to fast fourier transform, so as to obtain a frequency domain signal corresponding to the time domain signal.
In step S203, a plurality of peaks of the frequency domain signal are determined, and each peak is demodulated to obtain a plurality of symbols and indicator bit information.
In step S204, according to the indication bit information, a time domain sequence of each symbol is determined, and transmission data is obtained according to the time domain sequence.
After receiving the time domain signal sent by the sending end synchronously, the receiving end determines the sequence of each symbol in a plurality of symbols transmitted in parallel through the indication bit information, thereby obtaining the transmission data sent by the sending end, and improving the data transmission rate between the sending end and the receiving end under the condition of not reducing the data transmission performance.
For example, a receiving end synchronously receives a time domain signal sent by a sending end, despreads and Fast Fourier Transform (FFT) the time domain signal, transforms the time domain signal to a frequency domain to obtain a frequency domain signal corresponding to the time domain signal, determines M peak values in the frequency domain signal, demodulates the M peak values respectively to obtain M symbol data and bit information, and then determines a time sequence order of the M symbols according to the indication bit information to obtain transmission data sent by the sending end.
The above steps are exemplified in detail below in order to make the communication method provided by the present disclosure more understandable to those skilled in the art.
The first embodiment is as follows: spreading factor SF =10, frequency index value is 1, … …, 1024, and parallelism M =2 of parallel transmitted symbols (the additional indicating bit length is 1 bit), then the time domain order of the indicating bit value and the symbols is as follows in table 1:
| indicating bit value | Time domain order (M = 2) |
| 0 | 1 2 |
| 1 | 2 1 |
TABLE 1
It can be known that, when the indicated bit value is 0, the first demodulated data at the receiving end is the 1 st symbol of the 2 symbols transmitted in parallel, and the second demodulated data is the 2 nd symbol of the 2 symbols transmitted in parallel, and as shown in fig. 5 for the result after FFT, when the indicated bit value is 0, the frequency index value corresponding to the transmitted data is [100, 760], and the two frequency index values are demodulated in the demodulation order to obtain the transmitted data sent by the transmitting end;
on the contrary, when the indication bit value is 1, the indication bit value indicates that the first demodulated data at the receiving end is the 2 nd symbol of the 2 parallel-transmitted symbols, and the second demodulated data is the 1 st symbol of the 2 parallel-transmitted symbols, and as shown in fig. 5, when the indication bit value is 1, the frequency index value corresponding to the transmission data is [760, 100], and the two frequency index values are demodulated in the demodulation order to obtain the transmission data transmitted by the transmitting end.
Example two: spreading factor SF =10, frequency index value is 1, … …, 1024, and parallelism M =3 of parallel transmitted symbols (then the extra indicating bit length is 3 bits), then the time domain order of indicating bit value and symbol is referred to table 2 below:
| indicating bit value | Time domain order (M = 3) |
| 0 | 1 2 3 |
| 1 | 1 3 2 |
| 2 | 2 3 1 |
| 3 | 2 1 3 |
| 4 | 3 1 2 |
| 5 | 3 2 1 |
TABLE 2
It can be known that, when the indicated bit value is 0, the first demodulated data at the receiving end is the 1 st symbol of the 3 parallel-transmitted symbols, the second demodulated data is the 2 nd symbol of the 3 parallel-transmitted symbols, and the third demodulated data is the 3 rd symbol of the 3 parallel-transmitted symbols, and as shown in fig. 5 for the result after FFT, when the indicated bit value is 0, the frequency index value corresponding to the transmitted data is [100, 500, 760], and the two frequency index values are demodulated in the demodulation order, respectively, to obtain the transmitted data sent by the transmitting end;
when the indication bit value is 4, the data indicating the first demodulation at the receiving end is the 3 rd symbol of the 3 parallel-transmitted symbols, the second demodulation data is the 1 st symbol of the 3 parallel-transmitted symbols, and the third demodulation data is the 2 nd symbol of the 3 parallel-transmitted symbols, and as shown in fig. 5, when the indication bit value is 4, the frequency index value corresponding to the transmission data is [760, 100, 500], and the two frequency index values are demodulated in the demodulation order, respectively, to obtain the transmission data transmitted by the transmitting end.
Based on the same inventive concept, the present disclosure further provides a communication apparatus applied to a transmitting end, referring to fig. 7, the communication apparatus 1300 includes a control module 1301 and a transmitting module 1302.
The control module 1301 is configured to determine, according to multiple groups of symbols to be transmitted in parallel in the data to be transmitted, indication bit information corresponding to each group of symbols, where the indication bit information is used to indicate a time domain sequence of each symbol in the group of symbols to be transmitted in parallel in the data to be transmitted.
The sending module 1302 is configured to send a time domain signal to a receiving end according to the data to be transmitted and the indication bit information corresponding to each group of symbols, so that the receiving end obtains the transmission data according to the time domain signal.
Further, the control module 1301 is configured to determine, for each group of symbols, a total number of symbols in the group of symbols;
obtaining a factorial value of the total number of the symbols, and calculating an exponent to obtain a middle value;
and carrying out ceil function calculation on the intermediate value to obtain the indicating bit number corresponding to the group of symbols, wherein the indicating bit information comprises the indicating bit number.
Further, the sending module 1302 is configured to perform phase rotation on each symbol in a plurality of groups of symbols to be transmitted in parallel in the data to be transmitted.
Further, the transmitting module 1302 is configured to, in a case that the data to be transmitted includes a channel code or the transmitting end includes an interleaver, store the indication bit information corresponding to each group of symbols in a first symbol in the data to be transmitted, and transmit the time domain signal to the receiving end.
Further, the sending module 1302 is configured to, in a case that the data to be transmitted does not include a channel code and the sending end does not include an interleaver, store the indication bit information corresponding to each group of symbols in a first symbol of the data to be transmitted, and send a time domain signal to the receiving end, or
And storing the indication bit information corresponding to each group of symbols in each symbol of each group of symbols corresponding to the indication bit information, and sending a time domain signal to a receiving end.
It should be noted that, for convenience and brevity of description, the embodiments described in the specification all belong to the preferred embodiments, and the related parts are not necessarily essential to the present invention, for example, the control module and the sending module may be independent devices or may be the same device when being implemented specifically, and the disclosure is not limited thereto.
With regard to the apparatus in the above embodiment, the specific manner in which each module performs operations has been described in detail in the embodiment of the method applied to the transmitting end, and will not be elaborated here.
Based on the same inventive concept, the present disclosure also provides a communication apparatus applied to a receiving end, referring to fig. 8, the communication apparatus 1400 includes a receiving module 1401, a first executing module 1402, a second executing module 1403, and a processing module 1404.
Wherein, the receiving module 1401 is configured to synchronously receive a time domain signal transmitted by a transmitting end.
The first performing module 1402 is configured to despread and fast fourier transform the time-domain signal to obtain a frequency-domain signal corresponding to the time-domain signal.
The second performing module 1403 is configured to determine a plurality of peaks of the frequency domain signal, and demodulate each peak respectively to obtain a plurality of symbols and indication bit information.
The processing module 1404 is configured to determine a time domain order of each symbol according to the indication bit information, and obtain transmission data according to the time domain order.
It should be noted that, for convenience and brevity of description, the embodiments described in the specification all belong to the preferred embodiments, and the related parts are not necessarily essential to the present invention, for example, the first execution module and the second execution module may be independent devices or may be the same device when being implemented specifically, and the disclosure is not limited thereto.
With regard to the apparatus in the above embodiment, the specific manner in which each module performs operations has been described in detail in the embodiment of the method applied to the receiving end, and will not be elaborated here.
Based on the same inventive concept, the present disclosure also provides an electronic device, comprising:
a memory having a computer program stored thereon;
a processor for executing the computer program in the memory to implement the steps of the communication method applied to the transmitting end.
Fig. 9 is a block diagram illustrating an electronic device 600 according to an example embodiment. As shown in fig. 9, the electronic device 600 may include: a processor 601 and a memory 602. The electronic device 600 may also include one or more of a multimedia component 603, an input/output (I/O) interface 604, and a communications component 605.
The processor 601 is configured to control the overall operation of the electronic device 600, so as to complete all or part of the steps in the communication method applied to the transmitting end. The memory 602 is used to store various types of data to support operations at the electronic device 600, such as instructions for any application or method operating on the electronic device 600, as well as application-related data, such as data to be transmitted, information indicative of bits corresponding to groups of symbols to be transmitted in parallel in the data to be transmitted, time domain signals, and so forth. The Memory 602 may be implemented by any type of volatile or non-volatile Memory device or combination thereof, such as Static Random Access Memory (SRAM), Electrically Erasable Programmable Read-Only Memory (EEPROM), Erasable Programmable Read-Only Memory (EPROM), Programmable Read-Only Memory (PROM), Read-Only Memory (ROM), magnetic Memory, flash Memory, magnetic disk or optical disk. The multimedia components 603 may include a screen and audio components. Wherein the screen may be, for example, a touch screen and the audio component is used for outputting and/or inputting audio signals. For example, the audio component may include a microphone for receiving external audio signals. The received audio signal may further be stored in the memory 602 or transmitted through the communication component 605. The audio assembly also includes at least one speaker for outputting audio signals. The I/O interface 604 provides an interface between the processor 601 and other interface modules, such as a keyboard, mouse, buttons, etc. These buttons may be virtual buttons or physical buttons. The communication component 605 is used for wired or wireless communication between the electronic device 600 and other devices. Wireless Communication, such as Wi-Fi, bluetooth, Near Field Communication (NFC), 2G, 3G, 4G, NB-IOT, eMTC, or other 5G, etc., or a combination of one or more of them, which is not limited herein. The corresponding communication component 605 may therefore include: Wi-Fi module, Bluetooth module, NFC module, etc.
In an exemplary embodiment, the electronic Device 600 may be implemented by one or more Application Specific Integrated Circuits (ASICs), Digital Signal Processors (DSPs), Digital Signal Processing Devices (DSPDs), Programmable Logic Devices (PLDs), Field Programmable Gate Arrays (FPGAs), controllers, microcontrollers, microprocessors or other electronic components for performing the above-mentioned communication method applied to the transmitting end.
In another exemplary embodiment, there is also provided a computer readable storage medium including program instructions which, when executed by a processor, implement the steps of the above-described communication method applied to a transmitting end. For example, the computer readable storage medium may be the memory 602 described above including program instructions that are executable by the processor 601 of the electronic device 600 to perform the communication method described above as applied to the transmitting end.
In another exemplary embodiment, a computer program product is also provided, which comprises a computer program executable by a programmable apparatus, the computer program having code portions for performing the above-mentioned communication method for a transmitting end when executed by the programmable apparatus.
Based on the same inventive concept, the present disclosure also provides an electronic device, comprising:
a memory having a computer program stored thereon;
a processor for executing the computer program in the memory to implement the steps of the communication method applied to the receiving end.
Fig. 10 is a block diagram illustrating an electronic device 700 in accordance with an example embodiment. As shown in fig. 10, the electronic device 700 may include: a processor 701 and a memory 702. The electronic device 700 may also include one or more of a multimedia component 703, an input/output (I/O) interface 704, and a communication component 705.
The processor 701 is configured to control the overall operation of the electronic device 700, so as to complete all or part of the steps in the communication method for the receiving end. The memory 702 is used to store various types of data to support operation at the electronic device 700, such as instructions for any application or method operating on the electronic device 700 and application-related data, such as time-domain signals, symbols, indicator bit signals, transmission data, and the like. The Memory 702 may be implemented by any type of volatile or non-volatile Memory device or combination thereof, such as Static Random Access Memory (SRAM), Electrically Erasable Programmable Read-Only Memory (EEPROM), Erasable Programmable Read-Only Memory (EPROM), Programmable Read-Only Memory (PROM), Read-Only Memory (ROM), magnetic Memory, flash Memory, magnetic disk, or optical disk. The multimedia components 703 may include screen and audio components. Wherein the screen may be, for example, a touch screen and the audio component is used for outputting and/or inputting audio signals. For example, the audio component may include a microphone for receiving external audio signals. The received audio signal may further be stored in the memory 702 or transmitted through the communication component 705. The audio assembly also includes at least one speaker for outputting audio signals. The I/O interface 704 provides an interface between the processor 701 and other interface modules, such as a keyboard, mouse, buttons, etc. These buttons may be virtual buttons or physical buttons. The communication component 705 is used for wired or wireless communication between the electronic device 700 and other devices. Wireless Communication, such as Wi-Fi, bluetooth, Near Field Communication (NFC), 2G, 3G, 4G, NB-IOT, eMTC, or other 5G, etc., or a combination of one or more of them, which is not limited herein. The corresponding communication component 705 may thus include: Wi-Fi module, Bluetooth module, NFC module, etc.
In an exemplary embodiment, the electronic Device 700 may be implemented by one or more Application Specific Integrated Circuits (ASICs), Digital Signal Processors (DSPs), Digital Signal Processing Devices (DSPDs), Programmable Logic Devices (PLDs), Field Programmable Gate Arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic components for performing the above-described communication method for the receiving end.
In another exemplary embodiment, there is also provided a computer-readable storage medium including program instructions which, when executed by a processor, implement the steps of the above-described communication method for a receiving end. For example, the computer readable storage medium may be the above-mentioned memory 702 including program instructions executable by the processor 701 of the electronic device 700 to perform the above-mentioned communication method for the receiving end.
In another exemplary embodiment, a computer program product is also provided, which contains a computer program executable by a programmable apparatus, the computer program having code portions for performing the above-mentioned communication method for a receiving end when being executed by the programmable apparatus.
The preferred embodiments of the present disclosure are described in detail with reference to the accompanying drawings, however, the present disclosure is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solution of the present disclosure within the technical idea of the present disclosure, and these simple modifications all belong to the protection scope of the present disclosure.
It should be noted that the various features described in the above embodiments may be combined in any suitable manner without departing from the scope of the invention. In order to avoid unnecessary repetition, various possible combinations will not be separately described in this disclosure.
In addition, any combination of various embodiments of the present disclosure may be made, and the same should be considered as the disclosure of the present disclosure, as long as it does not depart from the spirit of the present disclosure.
Claims (9)
1. A communication method is applied to a sending end, and is characterized in that the method comprises the following steps:
after frequency shift Chirp spread spectrum modulation, determining indicating bit information corresponding to each group of symbols according to a plurality of groups of symbols needing parallel transmission in data to be transmitted, wherein the indicating bit information is used for indicating a time domain sequence of each symbol in the group of symbols needing parallel transmission in the data to be transmitted, and each group of symbols comprises a plurality of symbols needing parallel transmission;
sending a time domain signal to a receiving end according to the data to be transmitted and the indication bit information corresponding to each group of symbols, so that the receiving end can obtain transmission data according to the time domain signal;
before transmitting the time domain signal to the receiving end, the method further comprises: and carrying out phase rotation on each symbol in a plurality of groups of symbols needing parallel transmission in the data to be transmitted.
2. The method of claim 1, wherein the indication bit information includes an indication bit number, and wherein determining the indication bit information corresponding to each group of symbols according to a plurality of groups of symbols to be transmitted in parallel in the data to be transmitted includes:
for each group of symbols, determining a total number of symbols in the group of symbols;
obtaining the factorial value of the total number of the symbols, and calculating an exponent to obtain a middle value;
and carrying out ceil function calculation on the intermediate value to obtain the number of the indicating bits corresponding to the group of symbols.
3. The method of claim 1, wherein the sending a time domain signal to a receiving end according to the data to be transmitted and the indication bit information corresponding to each group of symbols comprises:
and under the condition that the data to be transmitted comprises a channel code or the transmitting end comprises an interleaver, storing the indication bit information corresponding to each group of symbols in a first symbol in the data to be transmitted, and transmitting a time domain signal to a receiving end.
4. The method of claim 1, wherein the sending a time domain signal to a receiving end according to the data to be transmitted and the indication bit information corresponding to each group of symbols comprises:
under the condition that the data to be transmitted does not comprise a channel code and the transmitting end does not comprise an interleaver, storing the indication bit information corresponding to each group of symbols in a first symbol of the data to be transmitted, and transmitting a time domain signal to a receiving end, or
And storing the indication bit information corresponding to each group of symbols in each symbol of each group of symbols corresponding to the indication bit information, and sending a time domain signal to a receiving end.
5. A communication method applied to a receiving end is characterized by comprising the following steps:
after frequency shift Chirp spread spectrum modulation, synchronously receiving a time domain signal sent by a sending end, wherein the time domain signal comprises a plurality of groups of symbols needing parallel transmission in data to be transmitted and indication bit information corresponding to each group of symbols needing parallel transmission in the data to be transmitted, each group of symbols comprises a plurality of symbols needing parallel transmission, and each symbol of the plurality of groups of symbols needing parallel transmission in the data to be transmitted is subjected to phase rotation before being received;
de-spreading and fast Fourier transforming the time domain signal to obtain a frequency domain signal corresponding to the time domain signal;
determining a plurality of peak values of the frequency domain signal, and demodulating each peak value respectively to obtain a plurality of symbols and indicating bit information;
and determining the time domain sequence of each symbol according to the indication bit information, and obtaining transmission data according to the time domain sequence.
6. A communication apparatus applied to a transmitting end, the apparatus comprising:
the control module is configured to determine, after frequency shift Chirp spread spectrum modulation, indicating bit information corresponding to each group of symbols according to a plurality of groups of symbols to be transmitted in parallel in data to be transmitted, where the indicating bit information is used to indicate a time domain sequence of each symbol in the group of symbols to be transmitted in parallel in the data to be transmitted, and each group of symbols includes a plurality of symbols to be transmitted in parallel;
a sending module configured to send a time domain signal to a receiving end according to the data to be transmitted and the indication bit information corresponding to each group of symbols, so that the receiving end obtains transmission data according to the time domain signal;
the transmitting module is further configured to perform phase rotation on each symbol in a plurality of groups of symbols to be transmitted in parallel in the data to be transmitted.
7. A communication apparatus applied to a receiving end, the apparatus comprising:
the receiving module is configured to synchronously receive a time domain signal sent by a sending end after frequency shift Chirp spread spectrum modulation, wherein the time domain signal comprises a plurality of groups of symbols needing parallel transmission in data to be transmitted and indicating bit information corresponding to each group of symbols needing parallel transmission in the data to be transmitted, each group of symbols comprises a plurality of symbols needing parallel transmission, and each symbol of the plurality of groups of symbols needing parallel transmission in the data to be transmitted is subjected to phase rotation before being received;
a first executing module configured to perform despreading and fast fourier transform on the time domain signal to obtain a frequency domain signal corresponding to the time domain signal;
a second execution module configured to determine a plurality of peaks of the frequency domain signal, and demodulate each of the peaks respectively to obtain a plurality of symbols and indicator bit information;
and the processing module is configured to determine a time domain sequence of each symbol according to the indication bit information, and obtain transmission data according to the time domain sequence.
8. A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of the method of any one of claims 1 to 4 or the steps of the method of claim 5.
9. An electronic device, comprising:
a memory having a computer program stored thereon;
a processor for executing the computer program in the memory to carry out the steps of the method of any one of claims 1 to 4 or the steps of the method of claim 5.
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| CN115604062B (en) * | 2022-10-08 | 2024-04-12 | 杭州万高科技股份有限公司 | Double-bit group demodulation method and demodulator in GFSK communication mode |
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