Dynamic environment distributed coherent communication carrier synchronization method and device

Abstract

The invention discloses a dynamic environment distributed coherent communication carrier synchronization method and device, and relates to a distributed coherent communication technology, and the method comprises the steps: dividing system time resources according to time slots after time synchronization; in the synchronous time slot Ti, 1, the master node sends synchronous reference signals to all the slave nodes; each slave node Sn measures a phase change value between two same pilot symbol sequences in the received signal, estimates to obtain frequency deviation, and calculates phase and amplitude estimated values; each slave node Sn analyzes a data symbol in the received synchronous reference waveform signal to obtain a coherent cooperative micro time slot; each slave node Sn respectively measures the frequency, the phase and the amplitude of the reference signal in each time slot Ti; and performing distributed coherent cooperative communication from the plurality of slave nodes Sn to the master node M within the time interval of the synchronous time slot Ti, 1 and the coherent cooperative time slot Ti, j. According to the invention, the problem of distributed carrier synchronization caused by a dynamic environment can be solved, and the adaptive capacity of a system to channel state change is improved.

Description

Technical Field

[0001] The present application relates to the field of distributed coherent communication technology, and in particular to a method and device for distributed coherent communication carrier synchronization in a dynamic environment. Background Art

[0002] Existing distributed coherent communication carrier phase synchronization methods are mainly aimed at static environments with fixed nodes, and require feeding back parameters such as phase and power estimated by the receiver to the transmitter, which requires the construction of a separate feedback link or feedback time slot resources. At the same time, multiple feedback adjustments are required to reach a convergence state, which has low real-time performance and cannot effectively track channel changes caused by node movement. In addition, the feedback chain occupies a large amount of system resources, limiting system capacity and operating efficiency.

[0003] Distributed coherent communication involves multiple nodes distributed across geographic space. These nodes transmit the same information to the receiver simultaneously and at the same frequency. Their signals are superimposed at the receiver. By ensuring that the resulting composite signal reaching the receiver is coherently superimposed through technical means, a significant increase in the received signal amplitude can be achieved. This distributed transmission architecture can utilize multiple low-power transmitters to achieve the same transmission performance as a single high-power transmitter using a directional antenna, making it particularly suitable for applications with multiple small distributed nodes. The key to achieving distributed coherent communication lies in synchronization between the various communication nodes, including frequency and phase synchronization.

[0004] Chinese patent publication number CN117834100A discloses a method for carrier phase synchronization in distributed coherent communications. This method involves n transmitters that have already achieved carrier frequency synchronization. Each transmitter independently and randomly generates an initial value for the carrier phase correction. Each transmitter then independently and randomly generates a phase perturbation value within a certain range of values, generating two symbols, one of which has a phase perturbation added to it. A receiver receives the composite signal of the signals transmitted by the n transmitters, calculates the average power and the local phase perturbation value, and feeds it back to the transmitter. The transmitter then multiplies the local phase correction value by a step size factor to update the local phase correction value. This process is repeated until the phase synchronization process converges.

[0005] The Chinese patent with publication number CN118473534A discloses a multi-node distributed coherent communication method and system for dynamic environments. The method divides a time slot into two sub-time slots; divided into a synchronization time slot and a collaborative communication time slot. In the synchronization time slot, the collaborative sending node completes the relative distance and channel measurement between the collaborative sending node and the collaborative receiving node based on the calibrated frequency oscillator; in the collaborative communication stage, each collaborative sending node first calculates its own compensation coefficient based on the channel gain matrix between the collaborative sending and receiving nodes. After the source node sends the information to be sent to the collaborative sending node, the collaborative sending node first enhances the signal and then operates on the signal in combination with the calculated compensation coefficient; after the collaborative receiving node receives the coherent signal, it transmits the coherent signal to the destination node so that the signal can be processed at the destination node.

[0006] Because the Doppler effect caused by node motion shortens the channel coherence time, the multiple feedback method described in Chinese Patent Publication No. CN117834100A requires multiple measurements and feedback between the transmitter and receiver. If the time required for multiple feedback exceeds the channel coherence time, phase synchronization will not converge. Simultaneously feeding back the average signal power of two symbols requires a separate feedback link between the transmitter and receiver, wasting system resources.

[0007] The Chinese patent with publication number CN118473534A assumes that the time of a time slot is less than the channel correlation time. However, due to the one-way transmission between the collaborative nodes, the transmitting node and the receiving node in the synchronization time slot and the collaborative communication time slot are different nodes, which will lead to different channel conditions such as phase change and channel attenuation. That is, the channel state of the synchronization time slot and the collaborative communication time slot is inconsistent, resulting in the channel attenuation and phase measurement between the nodes estimated in the synchronization time slot stage cannot truly reflect the channel state between the nodes in the collaborative communication time slot, resulting in mismatch of carrier frequency and phase synchronization, which will seriously affect the distributed coherent transmission effect. Summary of the Invention

[0008] The embodiments of the present application provide a method and device for distributed coherent communication carrier synchronization in a dynamic environment, which are used to solve the distributed carrier synchronization problem caused by the dynamic environment and improve the system's adaptability to changes in channel status.

[0009] The embodiment of the present application provides a dynamic environment distributed coherent communication carrier synchronization method, which is applied to a master node M and N slave nodes S1, S2, ..., S n, In a distributed coherent communication system with n=1, 2, ..., N, a master node and slave nodes, and slave nodes transmit and receive signals via wireless channels, the synchronization method includes:

[0010] After time synchronization, the system time resources are divided into time slots;

[0011] In the synchronization time slot T i,1 , the master node sends a synchronization reference signal to all slave nodes;

[0012] Each slave node S n Receive the signal transmitted by the master node M, and estimate the frequency offset value by measuring the phase change value between two identical pilot symbol sequences in the received signal;

[0013] Each slave node S n The phase and amplitude estimation values are calculated by performing correlation operation between the received pilot signal and the locally known pilot signal;

[0014] Each slave node S n The coherently coordinated micro-time slot obtained by parsing the data symbols in the received synchronous reference waveform signal is used as the current time slot T i Each slave node sends a coherent cooperation signal in the micro-slot T i,j ;

[0015] Each slave node S n In each time slot T i Measure the frequency, phase and amplitude of the reference signal sent by the master node M;

[0016] In the synchronization time slot T i,1 and coherent cooperation time slot T i,j During the time interval, multiple slave nodes S are monitored based on the measurement results and the phase and amplitude estimates. n Distributed coherent cooperative communication to the master node M.

[0017] The embodiment of the present application provides a dynamic environment distributed coherent communication carrier synchronization device, which is applied to a master node M and N slave nodes S1, S2, ..., S n, In a distributed coherent communication system with n=1, 2, ..., N, signals are transmitted and received between a master node and slave nodes, and between slave nodes via wireless channels. The master node and slave nodes include a processor and a memory, and a computer program is stored on the memory. When the computer program is executed by the processor, the steps of the aforementioned dynamic environment distributed coherent communication carrier synchronization method are implemented.

[0018] The embodiment of the present application adopts an open-loop approach to construct a distributed coherent communication system, without the need for a separate feedback link or feedback time slot resources; at the same time, a channel state prediction method is adopted to solve the distributed carrier synchronization problem caused by the dynamic environment and improve the system's adaptability to channel state changes.

[0019] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiment below. The accompanying drawings are for illustration purposes only and are not to be considered as limiting the present application. The same reference symbols are used throughout the drawings to represent the same components. In the drawings:

[0021] Figure 1 This is a schematic diagram of the architecture of the distributed coherent communication system according to an embodiment of the present application;

[0022] Figure 2 This is a schematic diagram of the overall process of the distributed coherent communication carrier synchronization method in a dynamic environment according to an embodiment of the present application;

[0023] Figure 3 This is a schematic diagram of time slot allocation for a distributed coherent communication carrier synchronization method in a dynamic environment according to an embodiment of the present application. DETAILED DESCRIPTION

[0024] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0025] The embodiment of the present application provides a method for synchronizing distributed coherent communication carriers in a dynamic environment, such as Figure 1 As shown, it is applied to a master node M and N slave nodes S1, S2, ..., S n, In a distributed coherent communication system with n=1, 2, ..., N, the master node and the slave nodes, and the slave nodes transmit and receive signals through wireless channels. The system uses time division multiple access to realize the link resource allocation between the master node and the slave nodes. Figure 2 As shown, the synchronization method of the embodiment of the present application includes the following steps:

[0026] In step S101, after time synchronization, system time resources are divided into time slots. In some embodiments, dividing the system time resources into time slots includes:

[0027] Each time slot T is divided iThe duration is specified, and each time slot is divided into a specified number of mini-time slots. Among the multiple mini-time slots, a fixed mini-time slot is designated as the synchronization time slot, and the other mini-time slots are designated as coherent collaboration time slots. Figure 3 As shown, each time slot T i 10ms long, each time slot T i Divided into 10 mini-time slots T i,1 ,T i,2 ,……,T i,10 , each mini-slot is 1ms long, and one of the 10 mini-slots is a fixed time slot T i,1 Used as synchronization time slot, the master node can select 1 micro time slot T i,j ,j=2,3,…,10, are used as coherent collaboration time slots, and the remaining micro-time slots are used for service transmission between slave nodes and interaction of coherent collaboration information between slave nodes.

[0028] In step S102, in the synchronization time slot T i,1 , the master node sends a synchronization reference signal to all slave nodes. In some embodiments, the synchronization reference signal sent by the master node to all slave nodes includes two or more identical pilot sequence symbols and a number of data symbols, wherein the pilot sequence symbols and the data symbols are modulated using QPSK X(t) = Acos(2πf c t+θ i ),i=1,2,3,4,0≤t≤T s , T s is a symbol interval. Based on the aforementioned example of 10 mini-slots, the data symbol carries the information of the mini-slot number j used as the coherent cooperative slot, j=2, 3, ..., 10.

[0029] In step S103, each slave node S n A signal transmitted by the master node M is received, and a frequency offset value is estimated by measuring a phase change value between two identical pilot symbol sequences in the received signal.

[0030] In step S104, each slave node S n The phase and amplitude estimation values are calculated by performing correlation operation between the received pilot signal and the locally known pilot signal.

[0031] In step S105, each slave node S n The coherently coordinated micro-time slot obtained by parsing the data symbols in the received synchronous reference waveform signal is used as the current time slot T i Each slave node sends a coherent cooperation signal in the micro-slot T i,j .

[0032] In step S106, each slave node S n In each time slot T iThe frequency, phase and amplitude of the reference signal sent by the master node M are measured respectively.

[0033] In step S107, in the synchronization time slot T i,1 and coherent cooperation time slot T i,j During the time interval, multiple slave nodes S are monitored based on the measurement results and the phase and amplitude estimates. n Distributed coherent cooperative communication to the master node M.

[0034] In some embodiments, each slave node S n The signal transmitted by the master node M is received to meet the following conditions:

[0035]

[0036] Among them, W n (t) is additive Gaussian noise;

[0037] The frequency offset value is estimated by measuring the phase change between two identical pilot symbol sequences in the received signal:

[0038]

[0039] Where T I is the pilot sequence interval, T P is the pilot sequence duration. n =f′ c +f′ d , which comprehensively reflects the carrier frequency deviation f′ generated by the crystal oscillator of the transmitting and receiving nodes c and the Doppler frequency shift f′ caused by motion d .

[0040] In some embodiments, each slave node S n The correlation operation between the received pilot signal and the locally known pilot signal satisfies the following conditions:

[0041]

[0042] The phase and amplitude estimates obtained by calculating the correlation operation satisfy:

[0043]

[0044] Each slave node S n In each time slot T i The frequency, phase and amplitude of the reference signal sent by the master node M are measured respectively. i Get i measurement values F in time slot n =[f′ n (1),f′ n (2),……,f′ n(i)], [A n =A′ n (1),A′ n (2),……,A′ n (i)].

[0045] Afterwards, each slave node S n The coherently coordinated mini-slot number j is obtained by parsing the data symbols in the received synchronous reference waveform signal as the current time slot T i Each slave node sends a coherent cooperation signal in the micro-slot T i,j .

[0046] Next, each slave node S n In each time slot T i The frequency, phase and amplitude of the reference signal sent by the master node M are measured respectively. i i measurement values F have been obtained in the time slot n =[f′ n (1),f′ n (2),……,f′ n (i)], [A n =A′ n (1),A′ n (2),……,A′ n (i)].

[0047] In the synchronization time slot T i,1 and coherent cooperation time slot T i,j During the time interval, the relative motion between nodes causes the Doppler frequency deviation and relative distance change, resulting in the synchronization time slot T i,1 Measured frequency f′ n (i,1)=f′ n (i) Phase Amplitude A′ n (i,1)=A′ n (i) Parameter value cannot accurately reflect the coherent cooperation time slot T i,j The corresponding parameter value f′ n (i,j), A′ n (i, j). Therefore, it is necessary to process the situation separately. In some embodiments, in the synchronization time slot T i,1 and coherent cooperation time slot T i,j During the time interval, multiple slave nodes S are monitored based on the measurement results and the phase and amplitude estimates. n Distributed coherent collaborative communication to the master node M includes:

[0048] In the current time slot value T iLess than or equal to the specified value T L In the case of coherent cooperation time slot T i,j Using the current time slot T i Internal synchronization time slot T i,1 The frequency f′ n (i,j)=f′ n (i,1), phase Amplitude A′ n (i,j)=A′ n (i,1) measurement value is used as the coherent cooperation time slot T i,j The emission compensation value of

[0049] In the coherent cooperation time slot T i,j , each slave node generates a QPSK modulated transmission signal Implement multiple slave nodes S n The distributed coherent cooperative communication to the master node M enables the received signal of the master node to obtain an amplitude gain or a signal-to-noise ratio gain.

[0050] In another case, in some embodiments, in the synchronization time slot T i,1 and coherent cooperation time slot T i,j During the time interval, multiple slave nodes S are monitored based on the measurement results and the phase and amplitude estimates. n Distributed coherent collaborative communication to the master node M also includes:

[0051] Current time slot value T i Greater than the specified value T L In the case of n The current time slot T is measured by multiple measurements. i Intra-coherent cooperation time slot T i,j The frequency f′ n (i,j), phase Amplitude A′ n The (i, j) parameters are predicted, and the prediction method can be based on the least mean square error (LMS) algorithm, which adopts the steepest descent method based on the gradient.

[0052] according to Calculate the next time slot T i+1,1 Frequency prediction value The weight vector μ f is the frequency prediction step factor, vector F n Contains the K latest values of the frequency to obtain the next time slot T i+1 From Node S n The frequency difference f′ between the master node M n The predicted value of (i+1,1) Similarly, the LMS algorithm can be used to obtain the next time slot T i+1 Predicted values of phase and amplitude and

[0053] In some embodiments, during the synchronization time slot T i,1 and coherent cooperation time slot T i,j During the time interval, multiple slave nodes S are monitored based on the measurement results and the phase and amplitude estimates. n Distributed coherent collaborative communication to the master node M also includes:

[0054] Based on the next time slot T i+1 The predicted value of the current time slot T i The measured value f′ n (i,1) and the next time slot T i+1 The predicted value of Interpolate to obtain the current time slot T i Intra-coherent cooperation time slot T i,j The frequency f′ n (i,j), phase Amplitude The specific interpolation method can be implemented using existing mature algorithms such as linear interpolation or cubic interpolation.

[0055] In some embodiments, further comprising:

[0056] According to the obtained coherent cooperation time slot T i,j The frequency f′ n (i,j), phase Amplitude Prediction value, each slave node S n In the collaboration time slot T i,j Perform frequency, phase, and amplitude transmission compensation corrections to generate QPSK modulated transmission signals This can further improve the number of slave nodes S in the motion environment n Distributed coherent cooperative communication gain to master node M.

[0057] The method of the embodiment of the present application adopts an open-loop approach to construct a distributed coherent communication system, which does not require a separate feedback link or feedback time slot resources. It has good real-time performance and can quickly track channel changes without occupying network time slot resources. In view of the dynamic environment where nodes move relative to each other, the method of the embodiment of the present application comprehensively considers the carrier frequency deviation generated by the local crystal oscillator and the influence of the Doppler frequency deviation caused by the node movement, as well as the change in relative distance, and adopts a channel state prediction method. It can quickly track channel changes, improve the distributed coherent transmission effect in a dynamic environment, and maximize the strength and signal-to-noise ratio of the received signal.

[0058] The method of the embodiment of the present application can reduce the occupancy rate of the synchronization time slot, support flexible configuration of coherent collaborative time slots, and the remaining time slot resources can be used for business transmission, thereby improving the system link capacity and accommodating more nodes.

[0059] The embodiment of the present application also proposes a dynamic environment distributed coherent communication carrier synchronization device, which is applied to a master node M and N slave nodes S1, S2, ..., S n, In a distributed coherent communication system with n=1, 2, ..., N, signals are transmitted and received between a master node and slave nodes, and between slave nodes via wireless channels. The master node and slave nodes include a processor and a memory, and a computer program is stored on the memory. When the computer program is executed by the processor, the steps of the aforementioned dynamic environment distributed coherent communication carrier synchronization method are implemented.

[0060] It should be noted that, in the various embodiments of the present application, the terms "comprises," "includes," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or apparatus comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or apparatus comprising the element.

[0061] The serial numbers of the above embodiments of the present application are for description only and do not represent the advantages or disadvantages of the embodiments.

[0062] Through the description of the above implementation methods, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of software plus the necessary general hardware platform, and of course can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of the present application, or the part that contributes to the prior art, can be embodied in the form of a software product, which is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk), and includes a number of instructions for enabling a terminal (which can be a mobile phone, computer, server, air conditioner, or network device, etc.) to execute the methods described in each embodiment of the present application.

[0063] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of this application, ordinary technicians in this field can also make many forms without departing from the purpose of this application and the scope of protection of the claims, all of which are protected by this application.

Claims

1. A method for distributed coherent communication carrier synchronization in a dynamic environment, characterized in that: Applicable to a master node M and N slave nodes S1, S2, ..., S n, In a distributed coherent communication system with n=1, 2, ..., N, a master node and slave nodes, and slave nodes transmit and receive signals via wireless channels, the synchronization method includes: After time synchronization, the system time resources are divided into time slots; In the synchronization time slot T i,1 , the master node sends a synchronization reference signal to all slave nodes; Each slave node S n Receive the signal transmitted by the master node M, and estimate the frequency offset value by measuring the phase change value between two identical pilot symbol sequences in the received signal; Each slave node S n The phase and amplitude estimation values are calculated by performing correlation operation between the received pilot signal and the locally known pilot signal; Each slave node S n The coherently coordinated micro-time slot obtained by parsing the data symbols in the received synchronous reference waveform signal is used as the current time slot T i Each slave node sends a coherent cooperation signal in the micro-slot T i,j ; Each slave node S n In each time slot T i Measure the frequency, phase and amplitude of the reference signal sent by the master node M; In the synchronization time slot T i,1 and coherent cooperation time slot T i,j During the time interval, multiple slave nodes S are monitored based on the measurement results and the phase and amplitude estimates. n Distributed coherent cooperative communication to the master node M.

2. The method for distributed coherent communication carrier synchronization in a dynamic environment according to claim 1, wherein: Dividing system time resources into time slots includes: Each time slot T is divided i The duration is specified, and each time slot is divided into a specified number of mini-time slots. Among the multiple mini-time slots, a fixed mini-time slot is specified as the synchronization time slot, and the other mini-time slots are used as coherent cooperation time slots.

3. The method for distributed coherent communication carrier synchronization in a dynamic environment according to claim 1, wherein: In the synchronization time slot T i,1 The synchronization reference signal sent by the master node to all slave nodes includes two or more identical pilot sequence symbols and several data symbols, where the pilot sequence symbols and data symbols are modulated using QPSK X(t) = Acos(2πf c t+θ i ),i=1,2,3,4,0≤t≤T s , T s is the symbol interval.

4. The method for distributed coherent communication carrier synchronization in a dynamic environment as claimed in claim 1, wherein: Each slave node S n The signal transmitted by the master node M is received to meet the following conditions: Among them, W n (t) is additive Gaussian noise; The frequency offset value is estimated by measuring the phase change between two identical pilot symbol sequences in the received signal: Where T I is the pilot sequence interval, T P is the pilot sequence duration.

5. The method for distributed coherent communication carrier synchronization in a dynamic environment as claimed in claim 1, wherein: Each slave node S n The correlation operation between the received pilot signal and the locally known pilot signal satisfies the following conditions: The phase and amplitude estimates obtained by calculating the correlation operation satisfy: Each slave node S n In each time slot T i The frequency, phase and amplitude of the reference signal sent by the master node M are measured respectively. i Get i measurement values F in time slot n =[f′ n (1),f′ n (2),……,f′ n (i)], [A n =A′ n (1),A′ n (2),……,A′ n (i)].

6. The method for distributed coherent communication carrier synchronization in a dynamic environment as claimed in claim 1, wherein: In the synchronization time slot T i,1 and coherent cooperation time slot T i,j During the time interval, multiple slave nodes S are monitored based on the measurement results and the phase and amplitude estimates. n Distributed coherent collaborative communication to the master node M includes: In the current time slot value T i Less than or equal to the specified value T L In the case of coherent cooperation time slot T i,j Using the current time slot T i Internal synchronization time slot T i,1 The frequency f′ n (i,j)=f′ n (i,1), phase Amplitude A ′ n (i,j)=A ′ n (i,1) measurement value is used as the coherent cooperation time slot T i,j The emission compensation value of In the coherent cooperation time slot T i,j , each slave node generates a QPSK modulated transmission signal Implement multiple slave nodes S n Distributed coherent cooperative communication to the master node M.

7. The method for distributed coherent communication carrier synchronization in a dynamic environment as claimed in claim 6, wherein: In the synchronization time slot T i,1 and coherent cooperation time slot T i,j During the time interval, multiple slave nodes S are monitored based on the measurement results and the phase and amplitude estimates. n Distributed coherent collaborative communication to the master node M also includes: Current time slot value T i Greater than the specified value T L In the case of each slave node S n The current time slot T is measured by multiple measurements. i Intra-coherent cooperation time slot T i,j The frequency f′ n (i,j), phase Amplitude A′ n (i,j) parameters are predicted; according to Calculate the next time slot T i+1,1 Frequency prediction value The weight vector μ f is the frequency prediction step factor, vector F n Contains the K latest values of the frequency to obtain the next time slot T i+1 From Node S n The frequency difference f′ between the master node M n The predicted value of (i+1,1) 8. The method for distributed coherent communication carrier synchronization in a dynamic environment as claimed in claim 7, wherein: In the synchronization time slot T i,1 and coherent cooperation time slot T i,j During the time interval, multiple slave nodes S are monitored based on the measurement results and the phase and amplitude estimates. n Distributed coherent collaborative communication to the master node M also includes: Based on the next time slot T i+1 The predicted value of the current time slot T i The measured value f′ n (i,1) and the next time slot T i+1 The predicted value of Interpolate to obtain the current time slot T i Intra-coherent cooperation time slot T i,j The frequency f′ n (i,j), phase Amplitude The predicted value of the difference.

9. The method for distributed coherent communication carrier synchronization in a dynamic environment as claimed in claim 8, wherein: Also includes: According to the obtained coherent cooperation time slot T i,j The frequency f′ n (i,j), phase Amplitude Prediction value, each slave node S n In the collaboration time slot T i,j Perform frequency, phase, and amplitude transmission compensation corrections to generate QPSK modulated transmission signals 10. A distributed coherent communication carrier synchronization device in a dynamic environment, characterized in that: Applicable to a master node M and N slave nodes S1, S2, ..., S n, A distributed coherent communication system with n=1, 2, ..., N, in which signals are transmitted and received between the master node and the slave node, and between the slave nodes through wireless channels, the master node and the slave node include a processor and a memory, the memory stores a computer program, and when the computer program is executed by the processor, the steps of the dynamic environment distributed coherent communication carrier synchronization method as described in any one of claims 1 to 9 are implemented.

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