CN117596112B - Modulation degree determining method and device - Google Patents
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Abstract
The embodiment of the specification provides a modulation degree determining method and device, wherein the modulation degree determining method comprises the following steps: acquiring an input signal, performing a preset number of modulation operations based on the input signal and a preset modulation degree, and determining a preset number of modulation operation results; performing preset operation on the preset number of modulation operation results to obtain the preset number of target operation results; determining an initial set value based on target operation results of a preset number, and determining a target set value from initial set values corresponding to at least two preset modulation degrees; the target modulation degree is determined from the at least two modulation degrees based on the target setting value determination. In the modulation degree searching process, the local waveform corresponding to each modulation degree is calculated for each modulation degree, then the operation value corresponding to each modulation degree is obtained, and then the maximum value in the operation values is searched, wherein the modulation degree corresponding to the maximum value is the estimation result of the modulation degree, so that the estimation precision of the modulation degree is improved.
Description
Technical Field
The embodiment of the specification relates to the technical field of signal processing, in particular to a modulation degree determining method.
Background
The PCM-FM (frequency modulation) is a code modulation mode widely adopted in the current telemetry system, and has the advantages of high reliability, good anti-interference capability and the like. The modulation degree is one of main modulation parameters of the frequency modulation signal, and signal indexes such as distance characteristic, power spectrum shape, bandwidth size and the like of the frequency modulation signal can be controlled by adjusting the modulation degree, so that the requirements of different scenes on the frequency modulation signal are met.
In PCM-FM demodulation, when there is a deviation between the modulation degree of the reception signal and the modulation degree of the transmission signal, there is caused a phase tree inconsistency, and as time goes by, the phase change becomes larger, thereby causing erroneous judgment. Meanwhile, the larger the deviation is, the larger the influence on MSD (multi-symbol detection) demodulation performance is. When the modulation degree deviation is 5%, the loss of MSD demodulation is within 0.2 dB; when the modulation degree deviation is 10%, the loss of MSD demodulation is close to 2dB; when the modulation degree deviation is 15%, the loss for MSD demodulation is close to 6dB. Therefore, when the modulation degree is unknown or cannot be known accurately, it is necessary to perform high-precision modulation degree search for the modulation signal to reduce demodulation loss. Thus, a better solution is needed.
Disclosure of Invention
In view of this, the present embodiment provides a modulation degree determination method. One or more embodiments of the present specification relate to a modulation degree determining apparatus, a computing device, a computer-readable storage medium, and a computer program to solve the technical drawbacks existing in the related art.
According to a first aspect of embodiments of the present specification, there is provided a modulation degree determining method including:
acquiring an input signal, performing a preset number of modulation operations based on the input signal and a preset modulation degree, and determining a preset number of modulation operation results; wherein, the number of the preset modulation degrees is at least two, and each preset modulation degree corresponds to a group of preset number of modulation operations;
performing preset operation on the preset number of modulation operation results to obtain the preset number of target operation results;
determining an initial set value based on target operation results of a preset number, and determining a target set value from initial set values corresponding to at least two preset modulation degrees;
the target modulation degree is determined from the at least two modulation degrees based on the target setting value determination.
In one possible implementation manner, obtaining an input signal, performing a preset number of modulation operations based on the input signal and a preset modulation degree, and determining a preset number of modulation operation results, including:
acquiring an input signal with a set length, and determining an initial symbol based on the input signal;
and determining a preset number of modulation waveforms based on a preset modulation degree, performing modulation operation based on the initial symbol and the modulation waveforms, and determining a preset number of modulation operation results.
In one possible implementation, acquiring an input signal of a set length includes:
and determining a sequence number corresponding to the preset modulation degree, and acquiring an input signal with a set length according to the sequence number.
In one possible implementation, acquiring an input signal of a set length includes:
and acquiring an input signal with a set length, and storing the input signal into an upper computer.
In one possible implementation, performing a modulation operation based on the initial symbol and the modulation waveform, determining a preset number of modulation operation results includes:
determining bit data based on the initial symbol and the modulation waveform;
performing full arrangement on the bit data to determine a preset number of arrangement data;
and (5) oversampling the arrangement data to obtain a preset number of modulation operation results.
In one possible implementation manner, performing a preset operation on a preset number of modulation operation results to obtain a preset number of target operation results, where the method includes:
performing modular operation on the preset number of modulation operation results to obtain modular operation results;
and determining an average operation length, and carrying out average operation on the modular operation results based on the average operation length determination to obtain a preset number of target operation results.
In one possible implementation, determining the target modulation degree from the at least two modulation degrees based on the target set point determination includes:
acquiring at least two target set values corresponding to at least two preset modulation degrees;
sequencing at least two target set values to obtain a sequencing result;
and determining a target modulation degree based on the sorting result.
According to a second aspect of the embodiments of the present specification, there is provided a modulation degree determining apparatus including:
the signal acquisition module is configured to acquire an input signal, perform a preset number of modulation operations based on the input signal and a preset modulation degree, and determine a preset number of modulation operation results; wherein, the number of the preset modulation degrees is at least two, and each preset modulation degree corresponds to a group of preset number of modulation operations;
the modulation operation module is configured to perform preset operation on a preset number of modulation operation results to obtain a preset number of target operation results;
the target value determining module is configured to determine initial setting values based on target operation results of a preset number, and determine target setting values from the initial setting values corresponding to at least two preset modulation degrees;
and a modulation degree determination module configured to determine a target modulation degree from the at least two modulation degrees based on the target set value determination.
According to a third aspect of embodiments of the present specification, there is provided a computing device comprising:
a memory and a processor;
the memory is configured to store computer-executable instructions that, when executed by the processor, perform the steps of the modulation degree determination method described above.
According to a fourth aspect of the embodiments of the present specification, there is provided a computer-readable storage medium storing computer-executable instructions which, when executed by a processor, implement the steps of the modulation degree determination method described above.
According to a fifth aspect of the embodiments of the present specification, there is provided a computer program, wherein the computer program, when executed in a computer, causes the computer to perform the steps of the modulation degree determination method described above.
The embodiment of the specification provides a modulation degree determining method and device, wherein the modulation degree determining method comprises the following steps: acquiring an input signal, performing a preset number of modulation operations based on the input signal and a preset modulation degree, and determining a preset number of modulation operation results; performing preset operation on the preset number of modulation operation results to obtain the preset number of target operation results; determining an initial set value based on target operation results of a preset number, and determining a target set value from initial set values corresponding to at least two preset modulation degrees; the target modulation degree is determined from the at least two modulation degrees based on the target setting value determination. In the modulation degree searching process, the local waveform corresponding to each modulation degree is calculated for each modulation degree, then the operation value corresponding to each modulation degree is obtained, and then the maximum value in the operation values is searched, wherein the modulation degree corresponding to the maximum value is the estimation result of the modulation degree, so that the estimation precision of the modulation degree is improved.
Drawings
Fig. 1 is a schematic view of a modulation degree determining method according to an embodiment of the present disclosure;
fig. 2 is a flowchart of a modulation degree determination method provided in an embodiment of the present specification;
fig. 3 is an offline processing schematic diagram of a modulation degree determining method according to an embodiment of the present disclosure;
fig. 4 is a schematic diagram of an implementation process of a modulation degree determining method according to an embodiment of the present disclosure;
fig. 5 is an overall flowchart of a modulation degree determining method according to an embodiment of the present disclosure;
fig. 6 is a logic diagram of a modulation degree determining method according to an embodiment of the present disclosure;
fig. 7 is a first simulation diagram of a modulation degree determination method provided in an embodiment of the present specification;
fig. 8 is a second simulation diagram of a modulation degree determination method provided in an embodiment of the present specification;
fig. 9 is a third simulation diagram of a modulation degree determination method provided in one embodiment of the present specification;
fig. 10 is a schematic diagram of a modulation degree determination apparatus provided in one embodiment of the present specification;
FIG. 11 is a block diagram of a computing device provided in one embodiment of the present description.
Detailed Description
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present description. This description may be embodied in many other forms than described herein and similarly generalized by those skilled in the art to whom this disclosure pertains without departing from the spirit of the disclosure and, therefore, this disclosure is not limited by the specific implementations disclosed below.
The terminology used in the one or more embodiments of the specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the one or more embodiments of the specification. As used in this specification, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used in one or more embodiments of the present specification refers to and encompasses any or all possible combinations of one or more of the associated listed items.
It should be understood that, although the terms first, second, etc. may be used in one or more embodiments of this specification to describe various information, these information should not be limited by these terms. These terms are only used to distinguish one type of information from another. For example, a first may also be referred to as a second, and similarly, a second may also be referred to as a first, without departing from the scope of one or more embodiments of the present description. The word "if" as used herein may be interpreted as "at … …" or "at … …" or "responsive to a determination", depending on the context.
In the present specification, a modulation degree determining method is provided, and the present specification relates to a modulation degree determining apparatus, a computing device, and a computer-readable storage medium, which are described in detail one by one in the following embodiments.
Referring to fig. 1, fig. 1 shows a schematic view of a scene of a modulation degree determining method according to an embodiment of the present specification.
In the application scenario of fig. 1, the computing device 101 may acquire an input signal, perform a preset number of modulation operations based on the input signal and a preset modulation degree, and determine a preset number of modulation operation results 102. Then, the computing device 101 may perform a preset operation on the preset number of modulation operation results 102 to obtain a preset number of target operation results 103. Thereafter, the computing device 101 may determine an initial setting value based on a preset number of target operation results 103, and determine a target setting value 104 from among initial setting values corresponding to at least two preset modulation degrees. Finally, the computing device 101 may determine a target modulation degree from the at least two modulation degrees based on the target set value 104, as indicated by reference numeral 105.
The computing device 101 may be hardware or software. When the computing device 101 is hardware, it may be implemented as a distributed cluster of multiple servers or terminal devices, or as a single server or single terminal device. When the computing device 101 is embodied as software, it may be installed in the hardware devices listed above. It may be implemented as a plurality of software or software modules, for example, for providing distributed services, or as a single software or software module. The present invention is not particularly limited herein.
Referring to fig. 2, fig. 2 shows a flowchart of a modulation degree determining method according to an embodiment of the present specification, and specifically includes the following steps.
Step 201: acquiring an input signal, performing a preset number of modulation operations based on the input signal and a preset modulation degree, and determining a preset number of modulation operation results; the preset modulation degrees are at least two, and each preset modulation degree corresponds to a group of preset number of modulation operations.
In one possible implementation manner, obtaining an input signal, performing a preset number of modulation operations based on the input signal and a preset modulation degree, and determining a preset number of modulation operation results, including: acquiring an input signal with a set length, and determining an initial symbol based on the input signal; and determining a preset number of modulation waveforms based on a preset modulation degree, performing modulation operation based on the initial symbol and the modulation waveforms, and determining a preset number of modulation operation results.
The set length is the length of the input signal to be acquired, for example, 10000 symbols. The modulation waveforms are locally pre-stored waveforms, and a preset modulation degree corresponds to a plurality of modulation waveforms. The preset modulation degree may be two or more, for example, the modulation degree is from 0.1 to 1.0, and each 0.01 is one modulation degree, and 99 modulation degrees are included in total.
In practical application, the implementation process of the high-precision search method suitable for the modulation degree of the frequency modulation system signal can be composed of a correlation operation module, a modulo operation module, an averaging module, a maximum value recording module, a maximum value searching module, a modulation degree obtaining module, a local waveform generating module and a flow control unit module.
Specifically, there are two ways to determine the modulation degree, one is to sequentially acquire the input signals, and for each preset modulation degree, different input signals are corresponding. Another way is to acquire the input signal only once, save the segment of the input signal, and use the segment of the input signal in case of calculation for different preset modulation degrees.
In one possible implementation, acquiring an input signal of a set length includes: and determining a sequence number corresponding to the preset modulation degree, and acquiring an input signal with a set length according to the sequence number.
For example, for a first preset modulation degree, an input signal with a set length is obtained, where the input signal corresponds to 1 to 10000 symbols, then for a second preset modulation degree, the 10001 th to 20000 th symbols corresponding to the input signal are obtained, and then the steps are sequentially performed until the last preset modulation degree obtains the corresponding symbols.
In one possible implementation, performing a modulation operation based on the initial symbol and the modulation waveform, determining a preset number of modulation operation results includes: determining bit data based on the initial symbol and the modulation waveform; performing full arrangement on the bit data to determine a preset number of arrangement data; and (5) oversampling the arrangement data to obtain a preset number of modulation operation results.
For example, let the input signal bit rate beSignal sampling frequency +.>For symbol rate->Is->Multiple, wherein the bit rate of the FM signal +.>Equal to symbol rate->I.e. +.>. Let go of>The time input signal is +.>The number of symbols of the correlation operation is +.>Modulation index +.>Time->The group local waveform is recorded asThe length is->. Then->Group correlation result->Expressed as:
wherein the local waveforms are commonA group, related to the modulation index. When the modulation index is +.>At the time->Group local waveform firstThe data are:
wherein,representing an imaginary symbol. />The elements in the full sequence are oversampled for the bits. The generation method comprises the following steps: first of all to->The whole arrangement of the individual bits gives +.>Number, then +.>And (5) double oversampling. To->For example, first 3 bits are fully ordered as:
then oversampling 4 times each bit, yielding:
the bit oversampling full sequence is obtained as follows:
in another possible implementation, acquiring the input signal of the set length includes: and acquiring an input signal with a set length, and storing the input signal into an upper computer.
In practical application, a section of data is collected through the FPGA and sent to the upper computer software, modulation degree search is carried out on the group of data, and the method is similar to off-line processing. After the modulation degree is searched out, the modulation degree is issued to the FPGA for use, as shown in figure 3, when the frequency synchronous loop and the frequency synchronous loop are locked, a period of data which is output in timing synchronization is acquired, and the acquired data length isAnd the data are sent to an upper computer (PC, desktop computer, server, etc.), the upper computer software performs off-line processing, and the modulation degree obtained after the processing is sent to the FPGA. When the frequency ring or the symbol ring is unlocked and locked again, the data needs to be collected again and processed.
The time for the modulation search wasWherein->Off-line processing time for single modulation search, +.>Is the transmission delay. With online processing time (+)>) In comparison, when the symbol rate +>When the treatment time is relatively short, the online treatment time is relatively short; when symbol rate +>Smaller, off-line processing times are shorter.
Step 202: and carrying out preset operation on the preset number of modulation operation results to obtain the preset number of target operation results.
In one possible implementation manner, performing a preset operation on a preset number of modulation operation results to obtain a preset number of target operation results, where the method includes: performing modular operation on the preset number of modulation operation results to obtain modular operation results; and determining an average operation length, and carrying out average operation on the modular operation results based on the average operation length determination to obtain a preset number of target operation results.
The preset operation may include a modulo operation and an average operation.
Specifically, to the firstGroup correlation result->Modulo, namely:
wherein,respectively express +.>Real and imaginary parts of (a) are provided.
Then average operation is carried out on the modular operation result, the operation length is as followsThe method comprises the following steps:
wherein the method comprises the steps ofTo the starting moment of the averaging.
Step 203: and determining initial set values based on target operation results of the preset quantity, and determining target set values from the initial set values corresponding to at least two preset modulation degrees.
Specifically, after the averaging operation is completedThe average result is found out to find the maximum value and the current modulation degree is recorded as +>The correlation maximum value is recorded as:
step 204: the target modulation degree is determined from the at least two modulation degrees based on the target setting value determination.
In one possible implementation, determining the target modulation degree from the at least two modulation degrees based on the target set point determination includes: acquiring at least two target set values corresponding to at least two preset modulation degrees; sequencing at least two target set values to obtain a sequencing result; and determining a target modulation degree based on the sorting result.
Specifically, the current modulation degree is obtained asAnd after the correlation operation is the maximum value, changing the modulation degree, calculating a new local waveform, and repeating the steps. When all +.>After searching the modulation degree, there is +.>Personal->The maximum value is obtained, and the modulation degree corresponding to the maximum value is recorded as the modulation degree of the searched received signal, namely:
further, the flow control unit controls the whole processing flow, including controlling the modulation degree traversal, from the minimum modulation degree to the maximum modulation degree, gradually increasing according to a preset search step. Then, after presetting each modulation degree, the maximum time required by the generation of the local waveform and the related operation is consideredThen at +.>And after the time interval, controlling the starting time of the averaging module, and controlling the ending time of the averaging module according to the length of the averaging. After the end of the averaging, the control record maximum module starts to find +.>The maximum value in the results is stored, then the flow control unit presets the next modulation degree, and the process is repeated until all modulation degrees are searched, and the search is performed for +.>And obtaining a modulation degree estimation result by the maximum value of the search results.
Referring to fig. 4, the implementation process can be implemented in a pipeline in the FPGA, and for each modulation degree searching process, different input signals are adopted, which has the advantages of simple implementation and less resource occupation, but has the disadvantage of long modulation degree searching time at low symbol rate, and is suitable for high symbol rate. It can be understood that each time a modulation is searched, acquisition is requiredA total of the input signalsThe time is as followsWherein->For processing delay, it is generally several to several tens of signal sampling periods (signal sampling period is signal sampling frequency +.>Inverse of (i.e.)>）。
Referring to fig. 5, an fpga internal implementation is shown in fig. 5. The sampled signal is first AGC (automatic gain control) modulated in amplitude and then quadrature down-converted to a zero intermediate frequency signal. And then frequency capturing is carried out, the initial frequency offset is obtained and then sent to a frequency synchronization loop, and the frequency offset of the input signal is corrected. The signal after frequency difference correction is sent to a timing synchronization loop to correct the sampling deviation of the input signal to obtainThe signal being oversampled, i.e. the signal sampling frequency is at the symbol rate +.>Multiple times. And after the frequency synchronization loop and the frequency synchronization loop are locked, starting the modulation degree search, stopping the operation of the modulation degree search after the modulation degree search is completed, and sending the searched modulation degree to the MSD module, wherein the MSD module starts to operate. When the frequency ring or the symbol ring is unlocked and locked again, a round of modulation search is started again.
Further, in the above manner, a section of data is collected by the FPGA and sent to the upper computer software, and the specific processing procedure is as follows.
Specifically, the flow of the off-line processing is as follows. Let the collected data beModulation fingerThe number is->Time->The group local waveform is recorded asThe modulation index is +.>Time->The result of the group sliding correlation operation is:
the sliding correlation process comprises the following steps:
modulation index ofTime->Averaging and summing the group sliding correlation operation results to obtain:
for a pair ofFind the maximum value, record as +.>The method comprises the following steps:
from the minimum search modulation degreeAccording to->To search for steps, search for +.>Obtaining a group ofSearching the maximum value, wherein the modulation degree corresponding to the maximum value is the modulation degree of searching.
The embodiment of the specification provides a modulation degree determining method and device, wherein the modulation degree determining method comprises the following steps: acquiring an input signal, performing a preset number of modulation operations based on the input signal and a preset modulation degree, and determining a preset number of modulation operation results; performing preset operation on the preset number of modulation operation results to obtain the preset number of target operation results; determining an initial set value based on target operation results of a preset number, and determining a target set value from initial set values corresponding to at least two preset modulation degrees; the target modulation degree is determined from the at least two modulation degrees based on the target setting value determination. In the modulation degree searching process, the local waveform corresponding to each modulation degree is calculated for each modulation degree, then the operation value corresponding to each modulation degree is obtained, and then the maximum value in the operation values is searched, wherein the modulation degree corresponding to the maximum value is the estimation result of the modulation degree, so that the estimation precision of the modulation degree is improved.
Further, referring to fig. 6, fig. 6 shows a logic schematic diagram of the modulation degree determination method.
Specifically, whether the frequency loop and the symbol loop are locked or not is judged, if yes, a section of data is collected and transmitted to the upper computer software, and the modulation degree search minimum value h is input min Maximum value h max Search step dh, initialize the current modulation h=h min Input signal oversamplingThe multiple M and the number N of related operation symbols generate 2 corresponding to the current modulation degree N The group local waveform initializes i=0. Inputting a correlation operation length L, reading a local waveform of the ith group, sliding and correlating with the acquired data, and averaging and summing correlation results to obtain S h,i And i=i+1, then judging i<2 N If yes, find 2 N S number h,i Is denoted as S h Let h=h+dh. Judging h<h max If yes, for S h Obtaining a maximum value, wherein the modulation degree corresponding to the maximum value is the searched modulation degree and is issued to the FPGA; further judging whether the frequency ring and the symbol ring are out of lock, and if so, returning to judge whether the frequency ring and the symbol ring are locked.
Referring to fig. 7, 8 and 9, modulation search is shownThe simulation conditions are as follows: input signal oversampling multipleSymbol number of correlation operation ∈>Modulation search Range->Modulation degree search steppingAverage length->The modulation degrees of the transmission signals are respectively 0.3, 0.7 and 1.0. It can be seen from the figure that when the modulation degree of the local scan is identical to the modulation degree of the transmission signal,/is>Maximum, and at extremely low signal-to-noise ratio (ebn0=4db, limit signal-to-noise ratio that frequency modulation system actually uses), the signal modulation degree can be estimated accurately.
Therefore, in the modulation degree searching process, the local waveform corresponding to each modulation degree is calculated for each modulation degree, then the operation value corresponding to each modulation degree is obtained, and then the maximum value in the operation values is searched, wherein the modulation degree corresponding to the maximum value is the estimation result of the modulation degree, so that the estimation precision of the modulation degree is improved, and the method is suitable for extremely low signal to noise ratio.
Corresponding to the above method embodiment, the present disclosure further provides a modulation degree determining apparatus embodiment, and fig. 10 shows a schematic structural diagram of a modulation degree determining apparatus provided in one embodiment of the present disclosure. As shown in fig. 10, the apparatus includes:
a signal acquisition module 1001 configured to acquire an input signal, perform a preset number of modulation operations based on the input signal and a preset modulation degree, and determine a preset number of modulation operation results; wherein, the number of the preset modulation degrees is at least two, and each preset modulation degree corresponds to a group of preset number of modulation operations;
the modulation operation module 1002 is configured to perform a preset operation on a preset number of modulation operation results to obtain a preset number of target operation results;
a target value determining module 1003 configured to determine an initial setting value based on a target operation result of a preset number, and determine a target setting value from the initial setting values corresponding to at least two preset modulation degrees;
the modulation degree determination module 1004 is configured to determine a target modulation degree from at least two modulation degrees based on the target set value determination.
In one possible implementation, the signal acquisition module 1001 is further configured to:
acquiring an input signal with a set length, and determining an initial symbol based on the input signal;
and determining a preset number of modulation waveforms based on a preset modulation degree, performing modulation operation based on the initial symbol and the modulation waveforms, and determining a preset number of modulation operation results.
In one possible implementation, the signal acquisition module 1001 is further configured to:
and determining a sequence number corresponding to the preset modulation degree, and acquiring an input signal with a set length according to the sequence number.
In one possible implementation, the signal acquisition module 1001 is further configured to:
and acquiring an input signal with a set length, and storing the input signal into an upper computer.
In one possible implementation, the signal acquisition module 1001 is further configured to:
determining bit data based on the initial symbol and the modulation waveform;
performing full arrangement on the bit data to determine a preset number of arrangement data;
and (5) oversampling the arrangement data to obtain a preset number of modulation operation results.
In one possible implementation, the modulation operation module 1002 is further configured to:
performing modular operation on the preset number of modulation operation results to obtain modular operation results;
and determining an average operation length, and carrying out average operation on the modular operation results based on the average operation length determination to obtain a preset number of target operation results.
In one possible implementation, the modulation degree determination module 1004 is further configured to:
acquiring at least two target set values corresponding to at least two preset modulation degrees;
sequencing at least two target set values to obtain a sequencing result;
and determining a target modulation degree based on the sorting result.
The embodiment of the specification provides a modulation degree determining method and device, wherein the modulation degree determining device comprises the following steps: acquiring an input signal, performing a preset number of modulation operations based on the input signal and a preset modulation degree, and determining a preset number of modulation operation results; performing preset operation on the preset number of modulation operation results to obtain the preset number of target operation results; determining an initial set value based on target operation results of a preset number, and determining a target set value from initial set values corresponding to at least two preset modulation degrees; the target modulation degree is determined from the at least two modulation degrees based on the target setting value determination. In the modulation degree searching process, the local waveform corresponding to each modulation degree is calculated for each modulation degree, then the operation value corresponding to each modulation degree is obtained, and then the maximum value in the operation values is searched, wherein the modulation degree corresponding to the maximum value is the estimation result of the modulation degree, so that the estimation precision of the modulation degree is improved.
The above is an exemplary embodiment of a modulation degree determination apparatus of the present embodiment. The technical solution of the modulation degree determining device and the technical solution of the modulation degree determining method belong to the same conception, and details of the technical solution of the modulation degree determining device, which are not described in detail, can be referred to the description of the technical solution of the modulation degree determining method.
Fig. 11 illustrates a block diagram of a computing device 1100 provided according to one embodiment of the present description. The components of computing device 1100 include, but are not limited to, a memory 1110 and a processor 1120. Processor 1120 is coupled to memory 1110 via bus 1130, and database 1150 is used to hold data.
The computing device 1100 also includes an access device 1140, the access device 1140 enabling the computing device 1100 to communicate via one or more networks 1160. Examples of such networks include public switched telephone networks (PSTN, public Switched Telephone Network), local area networks (LAN, local Area Network), wide area networks (WAN, wide Area Network), personal area networks (PAN, personal Area Network), or combinations of communication networks such as the internet. The access device 1140 may include one or more of any type of network interface, wired or wireless, such as a network interface card (NIC, network interface controller), such as an IEEE802.11 wireless local area network (WLAN, wireless Local Area Network) wireless interface, a worldwide interoperability for microwave access (Wi-MAX, worldwide Interoperability for Microwave Access) interface, an ethernet interface, a universal serial bus (USB, universal Serial Bus) interface, a cellular network interface, a bluetooth interface, near field communication (NFC, near Field Communication).
In one embodiment of the present description, the above components of computing device 1100, as well as other components not shown in FIG. 11, may also be connected to each other, such as by a bus. It should be understood that the block diagram of the computing device illustrated in FIG. 11 is for exemplary purposes only and is not intended to limit the scope of the present description. Those skilled in the art may add or replace other components as desired.
Computing device 1100 may be any type of stationary or mobile computing device, including a mobile computer or mobile computing device (e.g., tablet, personal digital assistant, laptop, notebook, netbook, etc.), mobile phone (e.g., smart phone), wearable computing device (e.g., smart watch, smart glasses, etc.), or other type of mobile device, or a stationary computing device such as a desktop computer or personal computer (PC, personal Computer). Computing device 1100 may also be a mobile or stationary server.
Wherein the processor 1120 is configured to execute computer-executable instructions that, when executed by the processor, perform the steps of the modulation degree determination method described above. The foregoing is a schematic illustration of a computing device of this embodiment. It should be noted that, the technical solution of the computing device and the technical solution of the modulation degree determining method belong to the same concept, and details of the technical solution of the computing device, which are not described in detail, can be referred to the description of the technical solution of the modulation degree determining method.
An embodiment of the present specification also provides a computer-readable storage medium storing computer-executable instructions that, when executed by a processor, implement the steps of the modulation degree determination method described above.
The above is an exemplary version of a computer-readable storage medium of the present embodiment. It should be noted that, the technical solution of the storage medium and the technical solution of the modulation degree determining method belong to the same concept, and details of the technical solution of the storage medium, which are not described in detail, can be referred to the description of the technical solution of the modulation degree determining method.
An embodiment of the present specification also provides a computer program, wherein the computer program, when executed in a computer, causes the computer to execute the steps of the modulation degree determination method described above.
The above is an exemplary version of a computer program of the present embodiment. It should be noted that, the technical solution of the computer program and the technical solution of the modulation degree determining method belong to the same concept, and details of the technical solution of the computer program, which are not described in detail, can be referred to the description of the technical solution of the modulation degree determining method.
The foregoing describes specific embodiments of the present disclosure. Other embodiments are within the scope of the following claims. In some cases, the actions or steps recited in the claims can be performed in a different order than in the embodiments and still achieve desirable results. In addition, the processes depicted in the accompanying figures do not necessarily require the particular order shown, or sequential order, to achieve desirable results. In some embodiments, multitasking and parallel processing are also possible or may be advantageous.
The computer instructions include computer program code that may be in source code form, object code form, executable file or some intermediate form, etc. The computer readable medium may include: any entity or device capable of carrying the computer program code, a recording medium, a U disk, a removable hard disk, a magnetic disk, an optical disk, a computer Memory, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), an electrical carrier signal, a telecommunications signal, a software distribution medium, and so forth. It should be noted that the computer readable medium contains content that can be appropriately scaled according to the requirements of jurisdictions in which such content is subject to legislation and patent practice, such as in certain jurisdictions in which such content is subject to legislation and patent practice, the computer readable medium does not include electrical carrier signals and telecommunication signals.
It should be noted that, for simplicity of description, the foregoing method embodiments are all expressed as a series of combinations of actions, but it should be understood by those skilled in the art that the embodiments are not limited by the order of actions described, as some steps may be performed in other order or simultaneously according to the embodiments of the present disclosure. Further, those skilled in the art will appreciate that the embodiments described in the specification are all preferred embodiments, and that the acts and modules referred to are not necessarily all required for the embodiments described in the specification.
In the foregoing embodiments, the descriptions of the embodiments are emphasized, and for parts of one embodiment that are not described in detail, reference may be made to the related descriptions of other embodiments.
The preferred embodiments of the present specification disclosed above are merely used to help clarify the present specification. Alternative embodiments are not intended to be exhaustive or to limit the invention to the precise form disclosed. Obviously, many modifications and variations are possible in light of the teaching of the embodiments. The embodiments were chosen and described in order to best explain the principles of the embodiments and the practical application, to thereby enable others skilled in the art to best understand and utilize the invention. This specification is to be limited only by the claims and the full scope and equivalents thereof.
Claims (7)
1. A modulation degree determination method, comprising:
acquiring an input signal, performing a preset number of modulation operations based on the input signal and a preset modulation degree, and determining a preset number of modulation operation results; wherein the number of the preset modulation degrees is at least two, and each preset modulation degree corresponds to a group of modulation operations of the preset number;
performing preset operation on the preset number of modulation operation results to obtain the preset number of target operation results;
determining initial set values based on the target operation results of the preset quantity, and determining target set values from the initial set values corresponding to at least two preset modulation degrees;
determining a target modulation degree from at least two modulation degrees based on the target set value;
the obtaining the input signal, performing a preset number of modulation operations based on the input signal and a preset modulation degree, and determining a preset number of modulation operation results includes:
acquiring an input signal with a set length, and determining an initial symbol based on the input signal;
determining the preset number of modulation waveforms based on the preset modulation degree, performing modulation operation based on the initial symbol and the modulation waveforms, and determining the preset number of modulation operation results;
the step of performing modulation operation based on the initial symbol and the modulation waveform, and determining the preset number of modulation operation results includes:
determining bit data based on the initial symbol and the modulation waveform;
performing full arrangement on the bit data to determine the preset number of arrangement data;
oversampling is carried out on each of the arrangement data to obtain the modulation operation results of the preset quantity;
the performing a preset operation on the preset number of modulation operation results to obtain the preset number of target operation results includes:
performing modular operation on the preset number of modulation operation results to obtain modular operation results;
and determining an average operation length, and determining to perform average operation on the modular operation result based on the average operation length to obtain the target operation results with the preset number.
2. The method of claim 1, wherein the acquiring the input signal of the set length comprises:
and determining a sequence number corresponding to the preset modulation degree, and sequentially acquiring an input signal with a set length based on the sequence number.
3. The method of claim 1, wherein the acquiring the input signal of the set length comprises:
and acquiring an input signal with a set length, and storing the input signal into an upper computer.
4. The method according to claim 1, wherein said determining a target modulation degree from at least two of said modulation degrees based on said target set value determination comprises:
acquiring at least two target set values corresponding to at least two preset modulation degrees;
sequencing at least two target set values to obtain sequencing results;
and determining a target modulation degree based on the sorting result.
5. A modulation degree determining apparatus, comprising:
the signal acquisition module is configured to acquire an input signal, perform a preset number of modulation operations based on the input signal and a preset modulation degree, and determine a preset number of modulation operation results; wherein the number of the preset modulation degrees is at least two, and each preset modulation degree corresponds to a group of modulation operations of the preset number;
the modulation operation module is configured to perform preset operation on the preset number of modulation operation results to obtain the preset number of target operation results;
the target value determining module is configured to determine initial set values based on target operation results of the preset number, and determine target set values from the initial set values corresponding to at least two preset modulation degrees;
a modulation degree determination module configured to determine a target modulation degree from at least two of the modulation degrees based on the target set value;
the obtaining the input signal, performing a preset number of modulation operations based on the input signal and a preset modulation degree, and determining a preset number of modulation operation results includes:
acquiring an input signal with a set length, and determining an initial symbol based on the input signal;
determining the preset number of modulation waveforms based on the preset modulation degree, performing modulation operation based on the initial symbol and the modulation waveforms, and determining the preset number of modulation operation results;
the step of performing modulation operation based on the initial symbol and the modulation waveform, and determining the preset number of modulation operation results includes:
determining bit data based on the initial symbol and the modulation waveform;
performing full arrangement on the bit data to determine the preset number of arrangement data;
oversampling is carried out on each of the arrangement data to obtain the modulation operation results of the preset quantity;
the performing a preset operation on the preset number of modulation operation results to obtain the preset number of target operation results includes:
performing modular operation on the preset number of modulation operation results to obtain modular operation results;
and determining an average operation length, and determining to perform average operation on the modular operation result based on the average operation length to obtain the target operation results with the preset number.
6. A computing device, comprising:
a memory and a processor;
the memory is configured to store computer executable instructions, and the processor is configured to execute the computer executable instructions, which when executed by the processor, implement the steps of the modulation degree determination method according to any one of claims 1 to 4.
7. A computer-readable storage medium storing computer-executable instructions which, when executed by a processor, implement the steps of the modulation degree determination method of any one of claims 1 to 4.
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