CN114338320B - CPM signal differential phase generation method, CPM signal differential phase generation device, CPM signal differential phase generation equipment and storage medium - Google Patents
CPM signal differential phase generation method, CPM signal differential phase generation device, CPM signal differential phase generation equipment and storage medium Download PDFInfo
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Abstract
The embodiment of the invention discloses a differential phase generation method, a device, equipment and a storage medium of a CPM signal. Comprising the following steps: generating discrete frequency pulses according to the frequency pulse function, and generating phase responses according to the discrete frequency pulses; generating differential phase pulses of the CPM signal according to the phase response; and generating the differential phase of the current symbol modulation value according to the differential phase pulse, the historical symbol modulation value vector and the current symbol modulation value. According to the differential phase pulse waveform and the modulation value of the CPM signal, the differential phase of the CPM signal is generated in real time, the complexity of the differential phase generation of the CPM signal is greatly reduced, and the lower power consumption level of CPM signal demodulation is effectively ensured.
Description
Technical Field
The embodiment of the invention relates to the technical field of communication, in particular to a differential phase generation method, device and equipment of a CPM signal and a storage medium.
Background
The continuous phase modulation (Continuous Phase Modulation, CPM) signal has the characteristics of constant envelope, fast power spectrum sidelobe attenuation, flexible and various modulation formats and the like, and is widely applied to low-power wireless transmission networks such as Bluetooth, low-power wide area networks and the like. In order to ensure low power consumption level, a low-power consumption CPM receiver generally adopts an incoherent differential phase demodulation method, and CPM differential phase needs to be generated in real time according to a modulation value as a reference signal in demodulation so as to finish signal correlation and other calculations. The method for generating the CPM signal differential phase in real time comprises the steps of firstly generating a complete CPM modulation signal according to a modulation value, and then carrying out delay differential and phase extraction on the CPM modulation signal to obtain the CPM signal differential phase.
However, the current differential phase generation method of the CPM signal needs a complex CPM signal baseband generator, and also needs multiplication and coordinate rotation digital calculation (Coordinate Rotation Digital Computer, cordic) on the CPM modulation signal, so that the implementation complexity is high. Therefore, the conventional differential phase generation method of the CPM signal cannot meet the requirements of users.
Disclosure of Invention
The embodiment of the invention provides a differential phase generation method, device and equipment of a CPM signal and a storage medium, so as to reduce the complexity of CPM signal differential phase generation.
In a first aspect, an embodiment of the present invention provides a method for generating a differential phase of a CPM signal, including: generating discrete frequency pulses according to a frequency pulse function, and generating a phase response according to the discrete frequency pulses;
generating differential phase pulses of the CPM signal according to the phase response;
and generating a differential phase of the current symbol modulation value according to the differential phase pulse, the historical symbol modulation value vector and the current symbol modulation value.
In a second aspect, an embodiment of the present invention provides a differential phase generating apparatus of a CPM signal, including: the phase response generation module is used for generating discrete frequency pulses according to the frequency pulse function and generating phase responses according to the discrete frequency pulses;
the differential phase pulse generation module is used for generating differential phase pulses of the CPM signal according to the phase response;
and the differential phase generation module is used for generating a differential phase of the current symbol modulation value according to the differential phase pulse, the historical symbol modulation value vector and the current symbol modulation value.
In a third aspect, an embodiment of the present invention provides an electronic device, including:
one or more processors;
a storage means for storing one or more programs;
when the one or more programs are executed by the one or more processors, the one or more processors are caused to implement the methods in any of the embodiments of the present invention.
In a fourth aspect, embodiments of the present invention also provide a computer storage medium having stored thereon a computer program which, when executed by a processor, implements a method as in any of the embodiments of the present invention.
According to the technical scheme of the embodiment of the invention, the differential phase of the CPM signal is generated in real time according to the differential phase pulse waveform and the modulation value of the CPM signal, so that the complexity of the differential phase generation of the CPM signal is greatly reduced, and the lower power consumption level of CPM signal demodulation is effectively ensured.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a flowchart of a method for generating differential phases of CPM signals according to an embodiment of the present invention;
fig. 2 is a flowchart of a method for generating differential phases of CPM signals according to a second embodiment of the present invention;
fig. 3 is a schematic structural diagram of a differential phase generating device of a CPM signal according to a third embodiment of the present invention;
fig. 4 is a schematic structural diagram of an electronic device according to a fourth embodiment of the present invention.
Detailed Description
The invention is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting thereof. It should be further noted that, for convenience of description, only some, but not all of the structures related to the present invention are shown in the drawings.
It should be further noted that, for convenience of description, only some, but not all of the matters related to the present invention are shown in the accompanying drawings. Before discussing exemplary embodiments in more detail, it should be mentioned that some exemplary embodiments are described as processes or methods depicted as flowcharts. Although a flowchart depicts operations (or steps) as a sequential process, many of the operations can be performed in parallel, concurrently, or at the same time. Furthermore, the order of the operations may be rearranged. The process may be terminated when its operations are completed, but may have additional steps not included in the figures. The processes may correspond to methods, functions, procedures, subroutines, and the like.
Example 1
Fig. 1 is a flowchart of a method for generating a differential phase of a CPM signal according to an embodiment of the present invention, where the embodiment is applicable to reducing complexity of generating a differential phase of a CPM signal, and the method may be performed by a device for generating a differential phase of a CPM signal according to an embodiment of the present invention, and the device may be implemented in software and/or hardware. As shown in fig. 1, the method specifically includes the following operations:
step S101, generating discrete frequency pulses according to the frequency pulse function, and generating a phase response according to the discrete frequency pulses.
Specifically, continuous phase modulation CPM is a generalized modulation scheme for modulating information in phase, and a CPM signal is defined as:
whereas the equivalent low-pass signal of the CPM signal is:
wherein E in equation (1) and equation (2) represents signal energy, T represents symbol period, f c Represents the symbol frequency, phi (t; alpha) represents the time-varying phase, phi 0 Representing the initial phase value.
The time-varying phase in this embodiment is specifically:
wherein T represents a symbol period, h represents a modulation index, q (T) represents a phase response function, f d Representing the signal frequency, alpha i For the modulation value on the ith symbol in CPM signal, the value comes from M-order modulation sets { + -1, + -3, …, + - (M-1) }, g (t) is a frequency impulse function, typically a finite interval function on the positive time axis, i.e., t<0 and t.gtoreq.LT, g (t) =0. g (t) is classified into various types, and smoothing frequency modulation (Tamed Frequency Modulation, TFM) and gaussian minimum shift keying (Gaussian Filtered Minimum Shift Keying, GMSK) are commonly used, however, this embodiment is merely illustrative, and the specific type of frequency pulse function used in the CPM signal is not limited. The main purpose of the present application is to simply and effectively calculate the differential phase DeltaPhi of CPM signal with time delay Deltaτ Δτ (t；α)。
Alternatively, generating discrete frequency pulses from the frequency pulse function and generating a phase response from the discrete frequency pulses may include: determining the number of pulse sampling points; sampling the frequency pulse function according to the number of the pulse sampling points to obtain discrete frequency pulses, wherein the number of the discrete frequency pulses is the same as the number of the pulse sampling points; the discrete frequency pulses are accumulated and the phase response is obtained.
Specifically, in this embodiment, when the number of pulse sampling points is determined to be l, the frequency pulse function g (t) is sampled according to the number of pulse sampling points to obtain discrete frequency pulses g (n), n=0, 1, … l, so the number of frequency pulses obtained through sampling in this embodiment is specifically l, and of course, this embodiment is merely illustrative, and the specific numerical value of the number of pulse sampling points is not limited. After l discrete frequency pulses are acquired, the frequency pulses g (n) are accumulated and a phase response is obtained
n=0, 1, … l. As can be seen from the above, in the present embodiment, the sampling frequency is usedThe phase response acquired by the rate pulse is also a discrete signal.
Step S102, differential phase pulses of the CPM signal are generated according to the phase response.
Optionally, before generating the differential phase pulse of the CPM signal according to the phase response, the method further includes: determining the number of sampling points of the differential time delay according to the preset differential time delay and the preset sampling interval; generating a differential phase pulse of the CPM signal from the phase response, comprising: and obtaining differential phase pulses according to the phase response and the number of the differential time delay sampling points.
Optionally, determining the number of sampling points of the differential delay according to the preset differential delay and the preset sampling interval includes: dividing the preset differential time delay by a preset sampling interval to obtain a calculation result; and taking the calculation result as the number of the differential time delay sampling points.
Specifically, when the preset differential time delay is determined to be Deltaτ, the preset sampling interval is T sample The number of the differential delay sampling points can be obtained by calculation according to the following formula (4):
Δn＝Δτ/T sample (4)
wherein Deltan represents the number of differential delay sampling points, deltaτ represents preset differential delay, T sample Representing a preset sampling interval. In this embodiment, the differential phase pulse is obtained according to the phase response and the number of the obtained differential delay sampling points.
Optionally, obtaining the differential phase pulse according to the phase response and the number of the differential delay sampling points includes: supplementing a first numerical value of the number of differential delay sampling points at the tail of the phase response to generate a first phase response signal; supplementing a second numerical value of the number of differential time delay sampling points at the front end of the phase response to generate a second phase response signal, wherein the second numerical value is smaller than the first numerical value; the difference between the first phase response signal and the second phase response signal is taken as a differential phase pulse.
In one embodiment, the first value is specifically 0.5 and the second value is specifically 0, so that Δn 0.5 are added at the end of the phase response q (n) to generate the first phase response signal q 1 (n)＝[q(n),0.5,…,0.5]n=0, 1, … l+Δn. Further, Δn 0 s are added to the front end of the phase response q (n) to generate a second phase response signal q 2 (n)＝[0,…,0,q(n)]N=0, 1, … l+Δn. After the first phase response signal q is obtained 1 (n) and a second phase response signal q 2 (n) after that, taking the difference between the first phase response signal and the second phase response signal as a differential phase pulse p Δn (n)＝q 1 (n)-q 2 (n),n＝0,1,…l+Δn。
Step S103, generating a differential phase of the current symbol modulation value according to the differential phase pulse, the historical symbol modulation value vector and the current symbol modulation value.
Optionally, generating the differential phase of the current symbol modulation value according to the differential phase pulse, the historical symbol modulation value vector and the current symbol modulation value includes: calculating the product result of the differential phase pulse and each historical symbol modulation value and the current symbol modulation value; and adding and summing each product result to generate a differential phase of the current symbol.
Specifically, in this embodiment, the history symbol modulation value vector h= [ α ] is also obtained k-m ,α k-m+1 ,…,α k-1 ]Where m represents the number of historical symbol modulation values. At the same time, the current symbol modulation value alpha is obtained k Where k represents the sequence number of the current symbol in the CPM signal. Thereby according to differential phase pulse p Δn (n), historical symbol modulation value vector H, and current symbol modulation value alpha k The differential phase pulse of the current symbol modulation value is calculated according to the following formula (5):
in this embodiment, the CPM differential phase signal may be generated in real time according to the CPM differential phase pulse waveform and the modulation value, without generating a complete CPM modulation signal according to the modulation value, and then performing delay differential and phase extraction on the CPM modulation signal to obtain the differential phase of the CPM signal. Therefore, the complexity of differential phase generation of the CPM signal is greatly reduced, and the lower power consumption level of CPM signal demodulation is effectively ensured.
According to the technical scheme of the embodiment of the invention, the differential phase of the CPM signal is generated in real time according to the differential phase pulse waveform and the modulation value of the CPM signal, so that the complexity of the differential phase generation of the CPM signal is greatly reduced, and the lower power consumption level of CPM signal demodulation is effectively ensured.
Example two
Fig. 2 is a flowchart of a method for generating a differential phase of a CPM signal according to a second embodiment of the present invention, where the method further includes, based on the above embodiment, after generating a differential phase of a current symbol modulation value from a differential phase pulse, a historical symbol modulation value vector, and the current symbol modulation value: the current coincidence modulation value is added to the historical symbol modulation value vector to update the historical symbol modulation value vector. Correspondingly, the method of the embodiment specifically comprises the following operations:
step S201, generating discrete frequency pulses according to the frequency pulse function, and generating a phase response according to the discrete frequency pulses.
Alternatively, generating discrete frequency pulses from the frequency pulse function and generating a phase response from the discrete frequency pulses may include: determining the number of pulse sampling points; sampling the frequency pulse function according to the number of the pulse sampling points to obtain discrete frequency pulses, wherein the number of the discrete frequency pulses is the same as the number of the pulse sampling points; the discrete frequency pulses are accumulated and the phase response is obtained.
Step S202, generating a differential phase pulse of the CPM signal according to the phase response.
Optionally, before generating the differential phase pulse of the CPM signal according to the phase response, the method further includes: determining the number of sampling points of the differential time delay according to the preset differential time delay and the preset sampling interval; generating a differential phase pulse of the CPM signal from the phase response, comprising: and obtaining differential phase pulses according to the phase response and the number of the differential time delay sampling points.
Optionally, determining the number of sampling points of the differential delay according to the preset differential delay and the preset sampling interval includes: dividing the preset differential time delay by a preset sampling interval to obtain a calculation result; and taking the calculation result as the number of the differential time delay sampling points.
Step S203, generating a differential phase of the current symbol modulation value according to the differential phase pulse, the historical symbol modulation value vector and the current symbol modulation value.
Optionally, generating the differential phase of the current symbol modulation value according to the differential phase pulse, the historical symbol modulation value vector and the current symbol modulation value includes: calculating the product result of the differential phase pulse and each historical symbol modulation value and the current symbol modulation value; and adding and summing each product result to generate a differential phase of the current symbol.
Step S204, adding the current coincidence modulation value to the historical symbol modulation value vector to update the historical symbol modulation value vector.
Specifically, when generating differential phases of CPM signals of a plurality of consecutive symbols, the current symbol modulation value α k After the differential phase generation of (a), the current coincidence modulation value alpha can be used k Modulation value vector h= [ alpha ] added to history symbol k-m ,α k-m+1 ,…,α k-1 ]In order to update the historical symbol modulation value vector, thereby obtaining an updated historical symbol modulation value vector H' = [ alpha ] k-m ,α k-m+1 ,…,α k-1 α k ]And the method is circulated until the differential phase of the last symbol modulation value is generated.
According to the technical scheme of the embodiment of the invention, the differential phase of the CPM signal is generated in real time according to the differential phase pulse waveform and the modulation value of the CPM signal, so that the complexity of the differential phase generation of the CPM signal is greatly reduced, and the lower power consumption level of CPM signal demodulation is effectively ensured. The differential phase of CPM signals of a plurality of continuous symbols is rapidly calculated in real time by updating the historical symbol modulation value vector.
Example III
Fig. 3 is a schematic structural diagram of a differential phase generating device of a CPM signal according to a third embodiment of the present invention, where the device includes: a phase response generation module 310, a differential phase pulse generation module 320, and a differential phase generation module 330.
Wherein, the phase response generating module 310 is configured to generate discrete frequency pulses according to the frequency pulse function, and generate a phase response according to the discrete frequency pulses;
a differential phase pulse generation module 320, configured to generate a differential phase pulse of the CPM signal according to the phase response;
the differential phase generation module 330 generates a differential phase of the current symbol modulation value from the differential phase pulse, the historical symbol modulation value vector, and the current symbol modulation value.
Optionally, the device further comprises a differential time delay sampling point number determining module, which is used for determining the number of differential time delay sampling points according to the preset differential time delay and the preset sampling interval; and the differential phase pulse generation module is used for acquiring differential phase pulses according to the phase response and the number of the differential time delay sampling points.
Optionally, the phase response generating module is used for determining the number of pulse sampling points;
sampling the frequency pulse function according to the number of the pulse sampling points to obtain discrete frequency pulses, wherein the number of the discrete frequency pulses is the same as the number of the pulse sampling points;
the discrete frequency pulses are accumulated and the phase response is obtained.
Optionally, the differential delay sampling point number determining module is specifically configured to divide a preset differential delay by a preset sampling interval to obtain a calculation result;
and taking the calculation result as the number of the differential time delay sampling points.
Optionally, the differential phase pulse generating module is configured to supplement a first value of the number of differential delay sampling points at the end of the phase response, and generate a first phase response signal;
supplementing a second numerical value of the number of differential time delay sampling points at the front end of the phase response to generate a second phase response signal, wherein the second numerical value is smaller than the first numerical value;
the difference between the first phase response signal and the second phase response signal is taken as a differential phase pulse.
Optionally, the differential phase generating module is configured to calculate a product result of the differential phase pulse and each of the historical symbol modulation values and the current symbol modulation value;
and adding and summing each product result to generate a differential phase of the current symbol.
Optionally, the apparatus further includes a historical symbol modulation value vector updating module, configured to add the current coincidence modulation value to the historical symbol modulation value vector to update the historical symbol modulation value vector.
The device can execute the CPM signal differential phase generation method provided by any embodiment of the invention, and has the corresponding functional modules and beneficial effects of the execution method. Technical details not described in detail in this embodiment may be found in the method provided by any embodiment of the present invention.
Example IV
Fig. 4 is a schematic structural diagram of an electronic device according to an embodiment of the present invention. Fig. 4 illustrates a block diagram of an exemplary electronic device 412 suitable for use in implementing embodiments of the invention. The electronic device 412 shown in fig. 4 is only an example and should not be construed as limiting the functionality and scope of use of embodiments of the invention.
As shown in fig. 4, the electronic device 412 is in the form of a general purpose computing electronic device. Components of electronic device 412 may include, but are not limited to: one or more processors 416, a memory 428, a bus 418 that connects the various system components (including the memory 428 and the processor 416).
A program/utility 440 having a set (at least one) of program modules 442 may be stored in, for example, memory 428, such program modules 442 including, but not limited to, an operating system, one or more application programs, other program modules, and program data, each or some combination of which may include an implementation of a network environment. Program modules 442 generally perform the functions and/or methodologies in the described embodiments of the invention.
The electronic device 412 may also communicate with one or more external electronic devices 414 (e.g., keyboard, pointing electronic device, display 424, etc.), with one or more electronic devices that enable a user to interact with the electronic device 412, and/or with any electronic device (e.g., network card, modem, etc.) that enables the electronic device 412 to communicate with one or more other computing electronic devices. Such communication may occur through an input/output (I/O) interface 422. Also, the electronic device 412 may communicate with one or more networks such as a Local Area Network (LAN), a Wide Area Network (WAN) and/or a public network, such as the Internet, through the network adapter 420. As shown, network adapter 420 communicates with other modules of electronic device 412 over bus 418. It should be appreciated that although not shown in fig. 4, other hardware and/or software modules may be used in connection with electronic device 412, including, but not limited to: microcode, electronic device drivers, redundant processing units, external disk drive arrays, RAID systems, tape drives, data backup storage systems, and the like.
The processor 416 executes instructions stored in the memory 428 to perform various functional applications and data processing, such as implementing the differential phase generation method of the CPM signal provided by embodiments of the present invention: generating discrete frequency pulses according to the frequency pulse function, and generating phase responses according to the discrete frequency pulses; generating differential phase pulses of the CPM signal according to the phase response; and generating the differential phase of the current symbol modulation value according to the differential phase pulse, the historical symbol modulation value vector and the current symbol modulation value.
Example five
A fifth embodiment of the present invention provides a computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements a differential phase generating method for CPM signals as provided in all the inventive embodiments of the present application:
generating discrete frequency pulses according to the frequency pulse function, and generating phase responses according to the discrete frequency pulses; generating differential phase pulses of the CPM signal according to the phase response; and generating the differential phase of the current symbol modulation value according to the differential phase pulse, the historical symbol modulation value vector and the current symbol modulation value.
Any combination of one or more computer readable media may be employed. The computer readable medium may be a computer readable signal medium or a computer readable storage medium. The computer readable storage medium can be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or a combination of any of the foregoing. More specific examples (a non-exhaustive list) of the computer-readable storage medium would include the following: an electrical connection having one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing. In this document, a computer readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device.
The computer readable signal medium may include a propagated data signal with computer readable program code embodied therein, either in baseband or as part of a carrier wave. Such a propagated data signal may take any of a variety of forms, including, but not limited to, electro-magnetic, optical, or any suitable combination of the foregoing. A computer readable signal medium may also be any computer readable medium that is not a computer readable storage medium and that can communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device.
Program code embodied on a computer readable medium may be transmitted using any appropriate medium, including but not limited to wireless, wireline, optical fiber cable, RF, etc., or any suitable combination of the foregoing.
Computer program code for carrying out operations of the present invention may be written in any combination of one or more programming languages, including an object oriented programming language such as Java, smalltalk, C ++ and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The program code may execute entirely on the user's computer, partly on the user's computer, as a stand-alone software package, partly on the user's computer and partly on a remote computer or entirely on the remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer through any kind of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or may be connected to an external computer (for example, through the Internet using an Internet service provider).
Note that the above is only a preferred embodiment of the present invention and the technical principle applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, while the invention has been described in connection with the above embodiments, the invention is not limited to the embodiments, but may be embodied in many other equivalent forms without departing from the spirit or scope of the invention, which is set forth in the following claims.
Claims (10)
1. A differential phase generation method of a CPM signal, comprising:
generating discrete frequency pulses according to a frequency pulse function, and generating a phase response according to the discrete frequency pulses;
generating differential phase pulses of the CPM signal according to the phase response;
and generating a differential phase of the current symbol modulation value according to the differential phase pulse, the historical symbol modulation value vector and the current symbol modulation value.
2. The method of claim 1, wherein prior to generating the differential phase pulse of the CPM signal from the phase response, further comprising:
determining the number of sampling points of the differential time delay according to the preset differential time delay and the preset sampling interval;
the generating a differential phase pulse of the CPM signal from the phase response includes:
and acquiring the differential phase pulse according to the phase response and the number of the differential time delay sampling points.
3. The method of claim 1, wherein generating discrete frequency pulses from a frequency pulse function and generating a phase response from the discrete frequency pulses comprises:
determining the number of pulse sampling points;
sampling the frequency pulse function according to the number of the pulse sampling points to obtain the discrete frequency pulses, wherein the number of the discrete frequency pulses is the same as the number of the pulse sampling points;
the discrete frequency pulses are accumulated and the phase response is obtained.
4. The method according to claim 2, wherein determining the number of differential delay sampling points according to the preset differential delay and the preset sampling interval comprises:
dividing the preset differential time delay by the preset sampling interval to obtain a calculation result;
and taking the calculation result as the number of the differential time delay sampling points.
5. The method of claim 2, wherein said obtaining differential phase pulses from said phase response and said number of differential delay sampling points comprises:
supplementing a first numerical value of the number of the differential time delay sampling points at the tail of the phase response to generate a first phase response signal;
supplementing a second numerical value of the number of the differential time delay sampling points at the front end of the phase response to generate a second phase response signal, wherein the second numerical value is smaller than the first numerical value;
and taking the difference value of the first phase response signal and the second phase response signal as the differential phase pulse.
6. The method of claim 1, wherein generating the differential phase of the current symbol modulation value from the differential phase pulse, the historical symbol modulation value vector, and the current symbol modulation value comprises:
calculating the product result of the differential phase pulse and each historical symbol modulation value and the current symbol modulation value;
and adding and summing each product result to generate a differential phase of the current symbol.
7. The method of claim 6, wherein after generating the differential phase of the current symbol modulation value from the differential phase pulse, the historical symbol modulation value vector, and the current symbol modulation value, further comprising:
the current symbol modulation value is added to the historical symbol modulation value vector to update the historical symbol modulation value vector.
8. A differential phase generating apparatus for CPM signals, comprising:
the phase response generation module is used for generating discrete frequency pulses according to the frequency pulse function and generating phase responses according to the discrete frequency pulses;
the differential phase pulse generation module is used for generating differential phase pulses of the CPM signal according to the phase response;
and the differential phase generation module is used for generating a differential phase of the current symbol modulation value according to the differential phase pulse, the historical symbol modulation value vector and the current symbol modulation value.
9. An electronic device, the electronic device comprising:
one or more processors;
a storage means for storing one or more programs;
when executed by the one or more processors, causes the one or more processors to implement the method of any of claims 1-7.
10. A computer storage medium having stored thereon a computer program, which when executed by a processor performs the method according to any of claims 1-7.
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