CN115276713A - Signal processing method, signal processing device, computer equipment and storage medium - Google Patents
Signal processing method, signal processing device, computer equipment and storage medium Download PDFInfo
- Publication number
- CN115276713A CN115276713A CN202110477105.6A CN202110477105A CN115276713A CN 115276713 A CN115276713 A CN 115276713A CN 202110477105 A CN202110477105 A CN 202110477105A CN 115276713 A CN115276713 A CN 115276713A
- Authority
- CN
- China
- Prior art keywords
- signal
- sub
- processing
- band
- baseband
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/69—Spread spectrum techniques
- H04B1/713—Spread spectrum techniques using frequency hopping
- H04B1/715—Interference-related aspects
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/69—Spread spectrum techniques
- H04B1/713—Spread spectrum techniques using frequency hopping
- H04B1/7156—Arrangements for sequence synchronisation
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J3/00—Time-division multiplex systems
- H04J3/02—Details
- H04J3/06—Synchronising arrangements
- H04J3/0602—Systems characterised by the synchronising information used
- H04J3/0617—Systems characterised by the synchronising information used the synchronising signal being characterised by the frequency or phase
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Noise Elimination (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The present application relates to a signal processing method, apparatus, computer device and storage medium. The method comprises the following steps: respectively carrying out integral spectrum shifting processing on the synchronous signals received at each moment in a preset time period to obtain a plurality of first processing signals; carrying out in-band frequency division sub-band frequency spectrum shifting processing on each first processing signal to obtain a second processing signal corresponding to each first processing signal; low-pass filtering each sub-band of each second processing signal to obtain a baseband synchronous signal corresponding to each sub-band of each second processing signal; determining interfered sub-carriers in baseband synchronous signals corresponding to each sub-band, setting the energy of the interfered sub-carriers to zero, and adding the sub-carriers with the energy set to zero to obtain target soft information signals corresponding to each sub-band; performing joint decoding on each target soft information signal to obtain a target synchronization signal; the target synchronization signal is a synchronization signal from which interference is removed. The method can ensure the robustness of the received synchronous signal.
Description
Technical Field
The present application relates to the field of communications technologies, and in particular, to a signal processing method and apparatus, a computer device, and a storage medium.
Background
The synchronization waveform in wireless communication is the basis of wireless network data communication, and especially in a time division duplex technology TDD system, signal synchronization can determine the receiving and transmitting time positions of communication nodes, so that receiving and transmitting collision of multi-user nodes is avoided. Therefore, correct and reliable reception of the synchronization waveform is a precondition for whether network communication can be normally established, and is also one of key factors for improving the performance of the network communication.
In the conventional technology, a frequency hopping means is usually adopted to combat an interference signal in a synchronization signal to a certain extent through frequency hopping, so as to ensure synchronous and reliable reception of a synchronization waveform.
However, the conventional method for processing the interference signal in the synchronization signal has the problem of poor robustness.
Disclosure of Invention
In view of the foregoing, it is necessary to provide a signal processing method, an apparatus, a computer device and a storage medium capable of ensuring robustness of processing an interference signal in a synchronization signal.
A method of signal processing, the method comprising:
respectively carrying out integral frequency spectrum shifting processing on the synchronous signals received at each moment in a preset time period to obtain a plurality of first processing signals; the synchronous signal is a signal sent by a sending end by adopting a time division repetition method;
carrying out in-band frequency division sub-band spectrum shifting processing on each first processing signal to obtain a second processing signal corresponding to each first processing signal;
performing low-pass filtering on each sub-band of each second processing signal to obtain a baseband synchronous signal corresponding to each sub-band of each second processing signal;
determining interfered sub-carriers in baseband synchronous signals corresponding to the sub-bands, setting the energy of the interfered sub-carriers to zero, and adding the sub-carriers with the energy set to zero to obtain target soft information signals corresponding to the sub-bands;
performing joint decoding on each target soft information signal to obtain a target synchronous signal; the target synchronization signal is a synchronization signal from which interference is removed.
In one embodiment, the determining the interfered subcarrier in the baseband synchronization signal corresponding to each of the subbands includes:
and determining the interfered sub-carrier in the baseband synchronous signal corresponding to each sub-band according to the signal-to-noise ratio of each sub-carrier of the baseband synchronous signal corresponding to each sub-band.
In one embodiment, the determining, according to the signal-to-noise ratio of each subcarrier of the baseband synchronization signal corresponding to each subband, an interfered subcarrier of the baseband synchronization signal corresponding to each subband includes:
comparing the signal-to-noise ratio of each subcarrier of the baseband synchronous signal corresponding to each subband with a preset threshold value;
and determining the sub-carrier with the signal-to-noise ratio of each sub-carrier of the baseband synchronous signal corresponding to each sub-band smaller than the preset threshold as the interfered sub-carrier in the baseband synchronous signal corresponding to each sub-band.
In one embodiment, the jointly decoding each of the target soft information signals to obtain a target synchronization signal includes:
demodulating each target soft information signal to obtain a demodulated target soft information signal;
and performing joint decoding on the demodulated target soft information signal to obtain the target synchronous signal.
In one embodiment, the synchronization signal is a frequency hopping processed signal.
In one embodiment, the more interfered subcarriers may correspond to a lower signal-to-noise ratio.
In one embodiment, the center frequency point of each subband of each second processed signal is 0.
A signal processing apparatus, the apparatus comprising:
the first processing module is used for respectively carrying out integral frequency spectrum shifting processing on the synchronous signals received at each moment in a preset time period to obtain a plurality of first processing signals; the synchronous signal is a signal sent by a sending end by adopting a time division repetition method;
the second processing module is used for carrying out in-band frequency division sub-band frequency spectrum shift processing on each first processing signal to obtain a second processing signal corresponding to each first processing signal;
the filtering module is used for performing low-pass filtering on each sub-band of each second processing signal to obtain a baseband synchronous signal corresponding to each sub-band of each second processing signal;
a third processing module, configured to determine an interfered subcarrier in a baseband synchronization signal corresponding to each subband, set energy of the interfered subcarrier to zero, and add the subcarriers with the energy set to zero to obtain a target soft information signal corresponding to each subband;
the fourth processing module is used for carrying out joint decoding on each target soft information signal to obtain a target synchronous signal; the target synchronization signal is a synchronization signal from which interference is removed.
A computer device comprising a memory and a processor, the memory storing a computer program, the processor implementing the following steps when executing the computer program:
respectively carrying out integral spectrum shifting processing on the synchronous signals received at each moment in a preset time period to obtain a plurality of first processing signals; the synchronous signal is a signal sent by a sending end by adopting a time division repetition method;
carrying out in-band frequency division sub-band frequency spectrum shifting processing on each first processing signal to obtain a second processing signal corresponding to each first processing signal;
performing low-pass filtering on each sub-band of each second processing signal to obtain a baseband synchronous signal corresponding to each sub-band of each second processing signal;
determining interfered sub-carriers in baseband synchronous signals corresponding to the sub-bands, setting the energy of the interfered sub-carriers to zero, and adding the sub-carriers with the energy set to zero to obtain target soft information signals corresponding to the sub-bands;
performing joint decoding on each target soft information signal to obtain a target synchronous signal; the target synchronization signal is a synchronization signal from which interference is removed.
A computer-readable storage medium, on which a computer program is stored which, when executed by a processor, carries out the steps of:
respectively carrying out integral spectrum shifting processing on the synchronous signals received at each moment in a preset time period to obtain a plurality of first processing signals; the synchronous signal is a signal sent by a sending end by adopting a time division repetition method;
carrying out in-band frequency division sub-band frequency spectrum shifting processing on each first processing signal to obtain a second processing signal corresponding to each first processing signal;
performing low-pass filtering on each sub-band of each second processing signal to obtain a baseband synchronous signal corresponding to each sub-band of each second processing signal;
determining interfered sub-carriers in baseband synchronous signals corresponding to the sub-bands, setting the energy of the interfered sub-carriers to zero, and adding the sub-carriers with the energy set to zero to obtain target soft information signals corresponding to the sub-bands;
performing joint decoding on each target soft information signal to obtain a target synchronous signal; the target synchronization signal is a synchronization signal from which interference is removed.
According to the signal processing method, the signal processing device, the computer equipment and the storage medium, the whole spectrum shifting processing is respectively carried out on the synchronization signals received at each moment in the preset time period, the obtained plurality of first processing signals can be signals with the central frequency point being zero, the in-band frequency molecular band spectrum shifting processing is further carried out on each first processing signal, the second processing signal corresponding to each first processing signal can be obtained, the sub-band central frequency point of each second processing signal is zero, the interfered sub-carrier in the baseband synchronization signal corresponding to each sub-band of each second processing signal can be determined, the energy of the interfered sub-carrier is set to be zero, the sub-carriers after the energy is set to be zero, the target soft information signal corresponding to each sub-band can be obtained by adding the sub-carriers after the energy is set to be zero, the target soft information signal can be jointly decoded, the interfered target synchronization signal is obtained, and the filtering processing is carried out on the interfered sub-carriers in the synchronization signals in the process, so that the interfered sub-carriers in the synchronization signals can be accurately processed, and the robustness of the synchronization signals can be ensured.
Drawings
FIG. 1 is a diagram of an exemplary embodiment of a signal processing method;
FIG. 2 is a flow diagram illustrating a method of signal processing according to one embodiment;
FIG. 2a is a schematic flow chart diagram illustrating a method for signal processing according to an embodiment;
FIG. 2b is a schematic flow chart diagram illustrating a method for signal processing according to one embodiment;
FIG. 2c is a schematic diagram of a signal processing method according to an embodiment;
FIG. 3 is a flow chart illustrating a signal processing method according to an embodiment
FIG. 4 is a block diagram showing the structure of a signal processing apparatus according to an embodiment;
fig. 5 is an internal structural view of a terminal in one embodiment.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
The signal processing method provided by the application can be applied to the application environment shown in fig. 1. Wherein the transmitting end 102 communicates with the terminal 104 through wireless communication. The transmitting end 102 may transmit a communication signal to the receiving end in real time, and the terminal 104 may receive the communication signal transmitted by the transmitting end 102 in real time.
In one embodiment, as shown in fig. 2, a signal processing method is provided, which is described by taking the application of the method to the terminal in fig. 1 as an example, and includes the following steps:
s201, carrying out integral spectrum shifting processing on the synchronous signals received at each moment in a preset time period to obtain a plurality of first processing signals. The synchronous signal is a signal sent by a sending end by adopting a time division repetition method;
the spectrum shifting refers to a process of converting a synchronization signal into a zero-frequency signal. Specifically, the terminal performs overall spectrum shift processing on the synchronization signals received at each time within a preset time period to obtain a plurality of first processing signals. The received synchronous signal is a signal sent by a sending end by adopting a time division repetition method. It should be noted that, the overall spectrum shifting processing performed by the terminal on the synchronization signals received at each time in the preset time period is to convert the synchronization signals received at each time in the preset time period into zero-frequency signals. Optionally, each time in the preset time period may include n times of f1, f2, … … fn. For example, the plurality of first processed signals obtained by the terminal performing the entire spectrum shifting process on the synchronization signals received at each time within the preset time period may be as shown in fig. 2a (it should be noted that the schematic diagram shown in fig. 2a is only an example of the first processed signal obtained at one time).
S202, carrying out in-band frequency division sub-band frequency spectrum shifting processing on each first processing signal to obtain a second processing signal corresponding to each first processing signal.
Specifically, the terminal performs an in-band frequency division subband frequency spectrum shift process on each obtained first processing signal to obtain a second processing signal corresponding to each first processing signal. Optionally, the center frequency point of each subband of each obtained second processing signal is 0. Here, the intra-band sub-band spectrum shift processing performed on each of the first processed signals is to shift the sub-band signal in each of the first processed signals (i.e., zero-frequency signals) to zero-frequency as well.
And S203, performing low-pass filtering on each sub-band of each second processing signal to obtain a baseband synchronous signal corresponding to each sub-band of each second processing signal.
Specifically, the terminal performs low-pass filtering on each subband of each obtained second processed signal to obtain a baseband synchronization signal corresponding to each subband of each second processed signal. Optionally, the terminal may perform low-pass filtering on each sub-band of each second processing signal through a preset low-pass filter to obtain a baseband synchronization signal corresponding to each sub-band of each second processing signal.
S204, determining the interfered sub-carrier in the baseband synchronous signal corresponding to each sub-band, setting the energy of the interfered sub-carrier to zero, and adding the sub-carriers with the energy set to zero to obtain the target soft information signal corresponding to each sub-band.
Specifically, the terminal determines the interfered sub-carrier in the baseband synchronization signal corresponding to each sub-band from the baseband synchronization signal corresponding to each sub-band of each second processing signal, sets the energy of the interfered sub-carrier in the baseband synchronization signal corresponding to each determined sub-band to zero, and adds the sub-carriers with the energy set to zero to obtain the target soft information signal corresponding to each sub-band. Optionally, the terminal may determine the interfered subcarrier in the baseband synchronization signal corresponding to each subband according to the signal-to-noise ratio of each subcarrier of the baseband synchronization signal corresponding to each subband. Optionally, the terminal may also determine the interfered subcarrier in the baseband synchronization signal corresponding to each subband according to the frequency of each subcarrier of the baseband synchronization signal corresponding to each subband. Illustratively, as shown in fig. 2b, the black columns in fig. 2b indicate the interfered subcarriers in the baseband synchronization signal corresponding to the determined subbands.
S205, performing joint decoding on each target soft information signal to obtain a target synchronous signal; the target synchronization signal is a synchronization signal from which interference is removed.
Specifically, the terminal performs joint decoding on each target soft information signal to obtain a target synchronization signal. It can be understood that the obtained target soft information signals have zeroed the energy of the interfered subcarrier, and therefore, the obtained target synchronization signal is the synchronization signal from which the interference is removed.
In order to facilitate understanding of the above signal processing method by those skilled in the art, as shown in fig. 2c, fig. 2c illustrates the principle of the signal processing method provided by the present application, and for detailed explanation in fig. 2c, please continue to refer to the descriptions in S201-S205 mentioned above.
In the signal processing method, the whole spectrum shifting processing is performed on the synchronization signals received at each moment in the preset time period, so that the obtained multiple first processing signals are signals with a zero central frequency point, the in-band frequency division sub-band spectrum shifting processing is performed on each first processing signal, the second processing signal corresponding to each first processing signal can be obtained, the sub-band central frequency point of each obtained second processing signal is zero, the interfered sub-carrier in the baseband synchronization signal corresponding to each sub-band of each second processing signal can be determined, the energy of the interfered sub-carrier is set to be zero, the sub-carriers after the energy is set to be zero are added to obtain the target soft information signal corresponding to each sub-band, the target soft information signals can be jointly decoded, the target synchronization signal without interference is obtained, and the process is the filtering processing performed on the interfered sub-carrier in the synchronization signal, so that the interfered sub-carrier in the synchronization signal can be accurately processed, and the robustness of the interference signal in the synchronization signal can be ensured.
In the above scenario of determining the interfered subcarrier in the baseband synchronization signal corresponding to each subband, the terminal may determine the interfered subcarrier according to the signal-to-noise ratio of each subcarrier of the baseband synchronization signal corresponding to each subband. In an embodiment, the determining the interfered subcarrier in the baseband synchronization signal corresponding to each subband in S204 includes: and determining the interfered sub-carrier in the baseband synchronous signal corresponding to each sub-band according to the signal-to-noise ratio of each sub-carrier of the baseband synchronous signal corresponding to each sub-band.
Specifically, the terminal determines the interfered subcarrier in the baseband synchronization signal corresponding to each subband according to the signal-to-noise ratio of each subcarrier of the baseband synchronization signal corresponding to each subband. Optionally, the terminal may compare the signal-to-noise ratio of each subcarrier of the baseband synchronization signal corresponding to each subband with a preset threshold, and determine the subcarrier of the baseband synchronization signal corresponding to each subband, where the signal-to-noise ratio of each subcarrier of the baseband synchronization signal corresponding to each subband is smaller than the preset threshold, as the interfered subcarrier in the baseband synchronization signal corresponding to each subband. Optionally, the stronger the interfered subcarrier is, the lower the signal-to-noise ratio is, that is, the worse the interfered subcarrier is, the lower the signal-to-noise ratio is.
In this embodiment, the terminal can quickly determine the interfered subcarrier from the baseband synchronization signal corresponding to each subband according to the signal-to-noise ratio of each subcarrier of the baseband synchronization signal corresponding to each subband, and because the process of determining the interfered subcarrier from each subcarrier of the baseband synchronization signal corresponding to each subband is simple, the efficiency of determining the interfered subcarrier in the baseband synchronization signal corresponding to each subband is improved.
In the scenario where the target soft information signals are jointly decoded to obtain the target synchronization signal, in an embodiment, as shown in fig. 3, the step S204 includes:
s301, demodulating each target soft information signal to obtain a demodulated target soft information signal.
Specifically, the terminal demodulates each of the target soft information signals to obtain demodulated target soft information signals. Optionally, the terminal may convert each target soft information signal into a digital baseband signal to obtain a demodulated target soft information signal.
S302, the demodulated target soft information signal is subjected to joint decoding to obtain a target synchronous signal.
Specifically, the terminal performs joint decoding on the demodulated target soft information signal to obtain a target synchronization signal. That is, the terminal may accumulate the demodulated target soft information to obtain the target synchronization signal.
In this embodiment, the process of demodulating each target soft information signal by the terminal is very simple, so that the terminal can demodulate each target soft information signal quickly and accurately, the accuracy of the obtained demodulated target soft information signal is ensured, and then the demodulated target soft information signal can be decoded accurately and jointly, thereby ensuring the accuracy of the obtained target synchronization signal.
In addition to the above embodiments, in an embodiment, the synchronization signal is a signal after frequency hopping processing.
Specifically, the synchronization signal received by the terminal is a signal after frequency hopping. It should be noted that the frequency hopping technique refers to a method of spreading a spectrum by performing frequency shift keying with a pseudo random code sequence so that a carrier frequency is continuously hopped. The synchronization signal in the embodiment of the present application is a signal after frequency hopping, and interference of external information on a communication signal can be blocked by frequency hopping, and illustratively, slow frequency hopping, such as 1000 frequency hopping, can be adopted to combat the blocking interference.
In this embodiment, since the synchronization signal received by the terminal is a signal after frequency hopping processing, and certain interference can be blocked by frequency hopping, the synchronization signal received by the terminal is a synchronization signal that blocks certain interference, and then the synchronization signal is processed, so that the interference in the synchronization signal can be further removed, and the robustness of obtaining the target synchronization signal is ensured.
It should be understood that although the various steps in the flow charts of fig. 2-3 are shown in order as indicated by the arrows, the steps are not necessarily performed in order as indicated by the arrows. The steps are not performed in the exact order shown and described, and may be performed in other orders, unless explicitly stated otherwise. Moreover, at least some of the steps in fig. 2-3 may include multiple steps or phases, which are not necessarily performed at the same time, but may be performed at different times, which are not necessarily performed in sequence, but may be performed in turn or alternately with other steps or at least some of the other steps or phases.
In one embodiment, as shown in fig. 4, there is provided a signal processing apparatus including: the device comprises a first processing module, a second processing module, a filtering module, a third processing module and a fourth processing module, wherein:
the first processing module is used for respectively carrying out integral frequency spectrum shifting processing on the synchronous signals received at each moment in a preset time period to obtain a plurality of first processing signals; the synchronous signal is a signal sent by a sending end by adopting a time division repetition method;
the second processing module is used for carrying out in-band frequency division sub-band frequency spectrum shifting processing on each first processing signal to obtain a second processing signal corresponding to each first processing signal;
the filtering module is used for performing low-pass filtering on each sub-band of each second processing signal to obtain a baseband synchronous signal corresponding to each sub-band of each second processing signal;
the third processing module is used for determining interfered sub-carriers in the baseband synchronous signals corresponding to the sub-bands, setting the energy of the interfered sub-carriers to zero, and adding the sub-carriers with the energy set to zero to obtain target soft information signals corresponding to the sub-bands;
the fourth processing module is used for carrying out joint decoding on each target soft information signal to obtain a target synchronous signal; the target synchronization signal is the synchronization signal from which interference is removed.
The signal processing apparatus provided in this embodiment may implement the method embodiments described above, and the implementation principle and the technical effect are similar, which are not described herein again.
On the basis of the foregoing embodiment, optionally, the third processing module includes: a determination unit, wherein:
and the determining unit is used for determining the interfered sub-carrier in the baseband synchronous signal corresponding to each sub-band according to the signal-to-noise ratio of each sub-carrier of the baseband synchronous signal corresponding to each sub-band.
The signal processing apparatus provided in this embodiment may implement the method embodiments described above, and the implementation principle and the technical effect are similar, which are not described herein again.
On the basis of the foregoing embodiment, optionally, the determining unit is configured to compare the signal-to-noise ratio of each subcarrier of the baseband synchronization signal corresponding to each subband with a preset threshold; and determining the sub-carrier with the signal-to-noise ratio of each sub-carrier of the baseband synchronous signal corresponding to each sub-band being smaller than a preset threshold as the interfered sub-carrier in the baseband synchronous signal corresponding to each sub-band.
The signal processing apparatus provided in this embodiment may implement the method embodiments described above, and the implementation principle and the technical effect are similar, which are not described herein again.
On the basis of the foregoing embodiment, optionally, the fourth processing module includes: a first processing unit and a second processing unit, wherein:
and the first processing unit is used for demodulating each target soft information signal to obtain a demodulated target soft information signal.
And the second processing unit is used for carrying out joint decoding on the demodulated target soft information signal to obtain a target synchronous signal.
The signal processing apparatus provided in this embodiment may implement the method embodiments described above, and the implementation principle and the technical effect are similar, which are not described herein again.
On the basis of the foregoing embodiment, optionally, the synchronization signal is a signal after frequency hopping processing.
The signal processing apparatus provided in this embodiment may implement the method embodiments described above, and the implementation principle and the technical effect are similar, which are not described herein again.
On the basis of the foregoing embodiment, optionally, the higher the interference degree, the lower the signal-to-noise ratio corresponding to the subcarrier is.
The signal processing apparatus provided in this embodiment may perform the method embodiments, and the implementation principle and technical effects are similar, which are not described herein again.
On the basis of the foregoing embodiment, optionally, the center frequency point of each subband of each second processed signal is 0.
The signal processing apparatus provided in this embodiment may perform the method embodiments, and the implementation principle and technical effects are similar, which are not described herein again.
For specific limitations of the signal processing apparatus, reference may be made to the above limitations of the signal processing method, which is not described herein again. The respective modules in the signal processing apparatus can be wholly or partially implemented by software, hardware, and a combination thereof. The modules can be embedded in a hardware form or independent from a processor in the computer device, and can also be stored in a memory in the computer device in a software form, so that the processor calls and executes operations corresponding to the modules.
In one embodiment, a terminal is provided, an internal structure of which may be as shown in fig. 5. The terminal comprises a processor, a memory, a communication interface, a display screen and an input device which are connected through a system bus. Wherein the processor of the terminal is configured to provide computing and control capabilities. The memory of the terminal comprises a nonvolatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of an operating system and computer programs in the non-volatile storage medium. The communication interface of the computer device is used for carrying out wired or wireless communication with an external terminal, and the wireless communication can be realized through WIFI, an operator network, NFC (near field communication) or other technologies. The computer program is executed by a processor to implement a signal processing method. The display screen of the terminal can be a liquid crystal display screen or an electronic ink display screen, and the input device of the terminal can be a touch layer covered on the display screen, a key, a track ball or a touch pad arranged on a shell of computer equipment, an external keyboard, a touch pad or a mouse and the like.
Those skilled in the art will appreciate that the architecture shown in fig. 5 is merely a block diagram of some of the structures associated with the disclosed aspects and is not intended to limit the computing devices to which the disclosed aspects apply, as particular computing devices may include more or less components than those shown, or may combine certain components, or have a different arrangement of components.
In one embodiment, a computer device is provided, comprising a memory and a processor, the memory having a computer program stored therein, the processor implementing the following steps when executing the computer program:
respectively carrying out integral spectrum shifting processing on the synchronous signals received at each moment in a preset time period to obtain a plurality of first processing signals; the synchronous signal is a signal sent by a sending end by adopting a time division repetition method;
carrying out in-band frequency division sub-band frequency spectrum shifting processing on each first processing signal to obtain a second processing signal corresponding to each first processing signal;
low-pass filtering each sub-band of each second processing signal to obtain a baseband synchronous signal corresponding to each sub-band of each second processing signal;
determining interfered sub-carriers in baseband synchronous signals corresponding to each sub-band, setting the energy of the interfered sub-carriers to zero, and adding the sub-carriers with the energy set to zero to obtain target soft information signals corresponding to each sub-band;
performing joint decoding on each target soft information signal to obtain a target synchronization signal; the target synchronization signal is a synchronization signal from which interference is removed.
In one embodiment, a computer-readable storage medium is provided, having stored thereon a computer program which, when executed by a processor, performs the steps of:
respectively carrying out integral spectrum shifting processing on the synchronous signals received at each moment in a preset time period to obtain a plurality of first processing signals; the synchronous signal is a signal sent by a sending end by adopting a time division repetition method;
carrying out in-band frequency division sub-band frequency spectrum shifting processing on each first processing signal to obtain a second processing signal corresponding to each first processing signal;
performing low-pass filtering on each sub-band of each second processing signal to obtain a baseband synchronous signal corresponding to each sub-band of each second processing signal;
determining interfered sub-carriers in baseband synchronous signals corresponding to each sub-band, setting the energy of the interfered sub-carriers to zero, and adding the sub-carriers with the energy set to zero to obtain target soft information signals corresponding to each sub-band;
performing joint decoding on each target soft information signal to obtain a target synchronization signal; the target synchronization signal is a synchronization signal from which interference is removed.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by hardware instructions of a computer program, which can be stored in a non-volatile computer-readable storage medium, and when executed, can include the processes of the embodiments of the methods described above. Any reference to memory, storage, database or other medium used in the embodiments provided herein can include at least one of non-volatile and volatile memory. Non-volatile Memory may include Read-Only Memory (ROM), magnetic tape, floppy disk, flash Memory, optical storage, or the like. Volatile Memory can include Random Access Memory (RAM) or external cache Memory. By way of illustration and not limitation, the RAM may take many forms, such as Static Random Access Memory (SRAM) or Dynamic Random Access Memory (DRAM).
The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent application shall be subject to the appended claims.
Claims (10)
1. A method of signal processing, the method comprising:
respectively carrying out integral spectrum shifting processing on the synchronous signals received at each moment in a preset time period to obtain a plurality of first processing signals; the synchronous signal is a signal sent by a sending end by adopting a time division repetition method;
carrying out in-band frequency division sub-band frequency spectrum shifting processing on each first processing signal to obtain a second processing signal corresponding to each first processing signal;
performing low-pass filtering on each sub-band of each second processing signal to obtain a baseband synchronous signal corresponding to each sub-band of each second processing signal;
determining interfered sub-carriers in baseband synchronous signals corresponding to the sub-bands, setting the energy of the interfered sub-carriers to zero, and adding the sub-carriers with the energy set to zero to obtain target soft information signals corresponding to the sub-bands;
performing joint decoding on each target soft information signal to obtain a target synchronous signal; the target synchronization signal is a synchronization signal from which interference is removed.
2. The method of claim 1, wherein the determining the interfered subcarrier in the baseband synchronization signal corresponding to each of the subbands comprises:
and determining the interfered sub-carrier in the baseband synchronous signal corresponding to each sub-band according to the signal-to-noise ratio of each sub-carrier of the baseband synchronous signal corresponding to each sub-band.
3. The method of claim 2, wherein the determining the interfered subcarrier of the baseband synchronization signal corresponding to each subband according to the snr of each subcarrier of the baseband synchronization signal corresponding to each subband comprises:
comparing the signal-to-noise ratio of each subcarrier of the baseband synchronous signal corresponding to each sub-band with a preset threshold value;
and determining the sub-carrier with the signal-to-noise ratio of each sub-carrier of the baseband synchronous signal corresponding to each sub-band smaller than the preset threshold as the interfered sub-carrier in the baseband synchronous signal corresponding to each sub-band.
4. The method of claim 1, wherein jointly decoding each of the targeted soft information signals to obtain a targeted synchronization signal comprises:
demodulating each target soft information signal to obtain a demodulated target soft information signal;
and performing joint decoding on the demodulated target soft information signal to obtain the target synchronous signal.
5. The method of claim 1, wherein the synchronization signal is a frequency-hopped signal.
6. The method of claim 2, wherein the more interfered subcarriers have lower signal-to-noise ratios.
7. The method of claim 1, wherein the center frequency point of each subband of each second processed signal is 0.
8. A signal processing apparatus, characterized in that the apparatus comprises:
the first processing module is used for respectively carrying out integral frequency spectrum shifting processing on the synchronous signals received at each moment in a preset time period to obtain a plurality of first processing signals; the synchronous signal is a signal sent by a sending end by adopting a time division repetition method;
the second processing module is used for carrying out in-band frequency division sub-band frequency spectrum shifting processing on each first processing signal to obtain a second processing signal corresponding to each first processing signal;
the filtering module is used for performing low-pass filtering on each sub-band of each second processing signal to obtain a baseband synchronous signal corresponding to each sub-band of each second processing signal;
a third processing module, configured to determine an interfered subcarrier in a baseband synchronization signal corresponding to each subband, set energy of the interfered subcarrier to zero, and add the subcarriers with the energy set to zero to obtain a target soft information signal corresponding to each subband;
the fourth processing module is used for carrying out joint decoding on each target soft information signal to obtain a target synchronous signal; the target synchronization signal is a synchronization signal from which interference is removed.
9. A computer device comprising a memory and a processor, the memory storing a computer program, characterized in that the processor, when executing the computer program, implements the steps of the method of any of claims 1 to 7.
10. 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 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110477105.6A CN115276713B (en) | 2021-04-29 | 2021-04-29 | Signal processing method, apparatus, computer device and storage medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110477105.6A CN115276713B (en) | 2021-04-29 | 2021-04-29 | Signal processing method, apparatus, computer device and storage medium |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115276713A true CN115276713A (en) | 2022-11-01 |
| CN115276713B CN115276713B (en) | 2023-06-02 |
Family
ID=83744751
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110477105.6A Active CN115276713B (en) | 2021-04-29 | 2021-04-29 | Signal processing method, apparatus, computer device and storage medium |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115276713B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050259760A1 (en) * | 2004-05-21 | 2005-11-24 | Casabona Mario M | Method and apparatus for excision of narrowband interference signals in navigation or communication bands |
| CN103188176A (en) * | 2011-12-31 | 2013-07-03 | 中国电子科技集团公司第五十研究所 | Method for reducing single frequency or narrow-band disturbing influence in orthogonal frequency division multiplexing system |
| CN110933007A (en) * | 2019-08-20 | 2020-03-27 | 熊军 | Device and method for eliminating interference aiming at OFDM broadband signals |
| CN111711594A (en) * | 2020-07-20 | 2020-09-25 | 浙江大华技术股份有限公司 | Single-frequency interference processing method and device |
-
2021
- 2021-04-29 CN CN202110477105.6A patent/CN115276713B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050259760A1 (en) * | 2004-05-21 | 2005-11-24 | Casabona Mario M | Method and apparatus for excision of narrowband interference signals in navigation or communication bands |
| CN103188176A (en) * | 2011-12-31 | 2013-07-03 | 中国电子科技集团公司第五十研究所 | Method for reducing single frequency or narrow-band disturbing influence in orthogonal frequency division multiplexing system |
| CN110933007A (en) * | 2019-08-20 | 2020-03-27 | 熊军 | Device and method for eliminating interference aiming at OFDM broadband signals |
| CN111711594A (en) * | 2020-07-20 | 2020-09-25 | 浙江大华技术股份有限公司 | Single-frequency interference processing method and device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115276713B (en) | 2023-06-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8045631B2 (en) | Method and apparatus for packet detection in wireless communication system | |
| US7697590B2 (en) | Communicating apparatus and communicating method | |
| CN108540169B (en) | Frequency hopping processing method and device | |
| CN109150464B (en) | Wireless communication method and wireless communication device | |
| US20090003495A1 (en) | Enhanced pilot signal receiver | |
| KR20050041880A (en) | Spectrum sharing in the unlicensed band | |
| RU2006101981A (en) | SIGNAL COMBINATIONS FOR SYSTEMS WITH MULTIPLE CARRIERS | |
| JP2009505471A (en) | Multi-carrier modulation using enhanced frequency coding | |
| KR20110000641A (en) | A system and method for utilizing spectral resources in wireless communications | |
| CN106160827B (en) | Multi-user information processing method and device | |
| CN107484175B (en) | Data transmission method and base station thereof | |
| WO2013104281A1 (en) | Method and system for spectrum sensing | |
| CN107786244B (en) | Method and device for transmitting information | |
| CN103716266A (en) | Signal processing method, device and system | |
| CN110418313B (en) | Method, apparatus, and computer-readable storage medium for message mapping | |
| JP2009517957A (en) | Sweep notch UWB transmitter | |
| CN102547740A (en) | Interference elimination method and device, and communication system | |
| Wang et al. | Coordinated jamming and communications in an MC-CDMA system | |
| Fu et al. | The modulation technology of chaotic multi-tone and its application in covert communication system | |
| US9094265B1 (en) | Receiving apparatus and demodulation method | |
| CN105703784A (en) | Cellular up-link harmonic spurs mitigation in wi-fi and bluetooth receivers | |
| KR101101853B1 (en) | Frequency hopping communication apparatus and method using chirp signals | |
| CN115276713B (en) | Signal processing method, apparatus, computer device and storage medium | |
| US10979263B2 (en) | Data processing method and device | |
| CN106936551B (en) | Sending method and receiving method of demodulation reference signal, terminal equipment and base station |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |