Information transmission method and device for wired network

Abstract

The invention discloses an information transmission method and device for a wired network. The device comprises an information modulation module, a power line coupling module, a power line, a power line decoupling module and an information demodulation module. The information modulation module is used for modulating to-be-transmitted information and converting the to-be-transmitted information into a high-frequency modulation signal suitable for being transmitted on a power line; the power line coupling module is connected with the information modulation module and a power line and is used for coupling the high-frequency modulation signal to the power line for transmission; the power line is used for transmitting high-frequency modulation signals; the power line decoupling module is connected with the power line and the information demodulation module and is used for decoupling a high-frequency modulation signal on the power line to the information demodulation module; and the information demodulation module is used for demodulating the decoupled high-frequency modulation signal and restoring the to-be-transmitted information.

Description

Technical Field

[0001] The present invention relates to the fields of industrial data processing, information transmission and strategy optimization technology, and in particular to an information transmission method and device for a wired network. Background Art

[0002] In existing information transmission networks, twisted-pair cables are a common transmission medium, widely used in various data communication scenarios. However, with the rapid development of information technology, data transmission volumes are constantly increasing, and the requirements for transmission speeds and distances are also increasing. Traditional twisted-pair cables are gradually becoming deficient in their transmission capabilities. Twisted-pair cables experience severe signal attenuation when transmitting high-frequency signals, limiting further increases in transmission speed. When the transmission rate reaches a certain level, signal attenuation causes distortion, leading to increased data transmission errors. Furthermore, twisted-pair cables have a limited transmission distance, requiring frequent relay equipment to amplify the signal over long distances. This not only increases system costs but also reduces system stability and reliability.

[0003] At the same time, power lines are widely distributed in modern society, covering nearly every building and area. Leveraging power lines for information transmission would fully utilize existing power infrastructure, avoid the need to re-lay extensive transmission cables, and significantly reduce construction costs. Furthermore, power line communication also faces challenges in multi-user information transmission. Distinguishing signals from different users on power lines and preventing interference between them is also a pressing issue.

[0004] Based on this, it is of great practical significance to study a technology that uses power lines to transmit information to solve the problem of insufficient transmission capacity of traditional twisted pair cables. Summary of the Invention

[0005] The present invention mainly solves the problem of insufficient transmission capacity of traditional twisted-pair cables by transmitting information through power lines. The present invention discloses an information transmission method and device for a wired network.

[0006] According to a first aspect of an embodiment of the present invention, an information transmission device for a wired network is disclosed, comprising: an information modulation module, a power line coupling module, a power line, a power line decoupling module, and an information demodulation module;

[0007] The information modulation module is used to modulate the information to be transmitted to obtain a high-frequency modulated signal; the information to be transmitted includes the information sequence to be transmitted of each user;

[0008] The power line coupling module is connected to the information modulation module and the power line, and is used to couple the high-frequency modulated signal to the power line for transmission;

[0009] The power line is used to transmit high-frequency modulated signals;

[0010] The power line decoupling module is connected to the power line and the information demodulation module, and is used to decouple the high-frequency modulated signal on the power line to the information demodulation module;

[0011] The information demodulation module is used to demodulate the decoupled high-frequency modulated signal to restore the information to be transmitted.

[0012] The information modulation module modulates the information to be transmitted to obtain a high-frequency modulated signal, including:

[0013] Performing modulation parameter processing on the information to be transmitted to obtain modulation parameter information;

[0014] The information to be transmitted is modulated using the modulation parameter information to obtain a high-frequency modulated signal.

[0015] The performing modulation parameter processing on the information to be transmitted to obtain modulation parameter information includes:

[0016] Obtaining a sampling time interval T of the information to be transmitted;

[0017] Calculate the frame duration of the sampling time interval T and the information to be transmitted to obtain the frame duration T f and time scale factor θ;

[0018] According to the frame time length T f and the time scale factor θ, the pulse duration T is calculated s , T s =T f / θ;

[0019] Performing user characteristic calculation processing on the information sequence to be transmitted of each user of the information to be transmitted, to obtain the modulation pulse energy and modulation factor of each user;

[0020] Using modulation factor, modulation pulse energy, frame time length T f and pulse duration T s , construct and obtain modulation parameter information.

[0021] The frame time length is calculated based on the sampling time interval T and the information to be transmitted to obtain the frame time length T f and a time scaling factor θ, including:

[0022] Constructing a transmission matrix using a sequence of information to be transmitted for each user in the information to be transmitted as a row vector;

[0023] Calculating the norm, trace and rank of the transmission matrix;

[0024] Obtaining statistically the variance of the mean of all row vectors of the transmission matrix;

[0025] The sampling time interval T, norm value, trace value and rank value are calculated to obtain the frame time length T f ;

[0026] Decomposing the transmission matrix to obtain a left decomposition matrix, a characteristic matrix, and a right decomposition matrix;

[0027] Extracting the diagonal elements of the characteristic matrix to obtain a characteristic vector;

[0028] Performing linear fitting processing on the elements and element sequence numbers of the eigenvector to obtain an approximation polynomial;

[0029] Using the mean of each row vector of the left decomposition matrix as an independent variable, inputting an approximation polynomial to obtain a corresponding output vector;

[0030] The ratio of the absolute maximum value to the absolute minimum value of all elements of the output vector is determined as the time scale factor θ.

[0031] The frame time length T f The calculation expression is:

[0032]

[0033] Wherein, N is the row dimension of the transfer matrix, α, β, and γ are the norm value, trace value, and rank value, respectively, ρ is the variance of the mean of all row vectors of the transfer matrix, and L2() represents the second-order Legendre function.

[0034] The performing user characteristic calculation processing on the information sequence to be transmitted of each user of the information to be transmitted to obtain the modulation pulse energy and modulation factor of each user includes:

[0035] Performing statistical processing on the information sequence to be transmitted of each user of the information to be transmitted to obtain a statistical information set for each user; the statistical information set includes the mean, variance, median, range, and frequency domain fluctuation value of the information sequence to be transmitted; the frequency domain fluctuation value is the square root of the variance of the first-order derivative of the FFT sequence of the information sequence to be transmitted divided by the variance of the information sequence to be transmitted;

[0036] Calculate the modulation pulse energy of each user's statistical information set to obtain the modulation pulse energy of each user;

[0037] Constructing a transmission matrix using a sequence of information to be transmitted for each user in the information to be transmitted as a row vector;

[0038] Factor calculation is performed on the transmission matrix to obtain a modulation factor for each user.

[0039] The expression for calculating the modulated pulse energy is:

[0040]

[0041] in, is the modulation pulse energy of the kth user, E0 is the standard energy value, a1 k 、a2 k 、a3 k 、a4 k 、a5 k are the mean, variance, median, range and frequency domain fluctuation value of the kth information sequence to be transmitted, T2() represents the second-order polynomial of the second kind of Chebyshev polynomial, and E0 is the preset energy standard value.

[0042] The expression for calculating the factor is:

[0043]

[0044] Where δ(k) is the modulation factor of the kth user, y kj is the element in the kth row and jth column of the transmission matrix, y j is the variance value of the jth column of the transmission matrix, M is the column dimension of the transmission matrix, and is also the length of the information sequence to be transmitted.

[0045] The method of using the modulation parameter information to modulate the information to be transmitted to obtain a high-frequency modulated signal includes:

[0046] Get the minimum frequency f of power line information transmission L and the highest frequency f U ;

[0047] According to the modulation factor of each user, the lowest frequency f L , maximum frequency f U and T s , construct the pulse solution model for each user;

[0048] Solve the pulse solution model for each user to obtain the modulated pulse waveform of each user;

[0049] Using the modulation pulse waveform of each user, pulse modulation processing is performed on the information sequence to be transmitted by each user to obtain the modulation signal of each user;

[0050] Performing OFDM modulation on the modulation parameter information to obtain a modulation header signal;

[0051] A high-frequency modulation signal is constructed using the modulation header signal and the modulation signals of all users.

[0052] The expression of the impulse solution model of the k-th user is:

[0053]

[0054] h(t)=2f U sinc(2f U t)-2f L sinc(2f L t),

[0055] Where t is the time variable, τ is the time shift variable, h(t) is the intermediate function, sinc is the Singer function, δ(k) is the modulation factor of the kth user, and p k (t) is the modulated pulse waveform of the kth user to be solved.

[0056] The beneficial effects of the present invention are:

[0057] The present invention modulates the information to be transmitted through an information modulation module and converts it into a high-frequency modulated signal suitable for transmission on the power line. This process not only takes into account the transmission characteristics of the power line, but also performs personalized modulation parameter processing for each user's information sequence to be transmitted, thereby improving the signal transmission performance and anti-interference ability on the power line.

[0058] During the demodulation process of the present invention, the information demodulation module can accurately restore the information sequence to be transmitted for each user by accurately demodulating the high-frequency modulated signal. In particular, the time-hopping sequence of each user is used to determine the position of the modulated data, and the corresponding data to be transmitted is determined based on the data modulation time shift of the modulated data. This unique demodulation method further improves the accuracy and reliability of multi-user information transmission and effectively avoids mutual interference between signals of different users. In addition, during the modulation parameter processing process, the present invention obtains accurate frame time length and time scale factor through comprehensive calculation of parameters such as the sampling time interval, the norm value, trace value and rank value of the transmission matrix, providing a scientific basis for signal modulation and demodulation, and further optimizing the signal transmission performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0059] Figure 1 It is a composition diagram of the device of the present invention. DETAILED DESCRIPTION

[0060] In order to better understand the content of the present invention, an embodiment is given here.

[0061] Figure 1 It is a composition diagram of the device of the present invention.

[0062] According to a first aspect of an embodiment of the present invention, an information transmission device for a wired network is disclosed, comprising: an information modulation module, a power line coupling module, a power line, a power line decoupling module, and an information demodulation module;

[0063] The information modulation module is used to modulate the information to be transmitted and convert it into a high-frequency modulated signal suitable for transmission on the power line; the information to be transmitted includes the information sequence to be transmitted for each user;

[0064] The power line coupling module is connected to the information modulation module and the power line, and is used to couple the high-frequency modulated signal to the power line for transmission;

[0065] Power lines are used to transmit high-frequency modulated signals;

[0066] The power line decoupling module is connected to the power line and the information demodulation module, and is used to decouple the high-frequency modulation signal on the power line to the information demodulation module.

[0067] The information demodulation module is used to demodulate the decoupled high-frequency modulated signal to restore the information to be transmitted.

[0068] The information modulation module modulates the information to be transmitted and converts it into a high-frequency modulated signal suitable for transmission on the power line, including:

[0069] Performing modulation parameter processing on the information to be transmitted to obtain modulation parameter information;

[0070] Using the modulation parameter information, modulating the information to be transmitted to obtain a high-frequency modulated signal;

[0071] The information demodulation module demodulates the decoupled high-frequency modulated signal to restore the information to be transmitted, including:

[0072] Obtaining a modulation header signal corresponding to the modulation parameter information from the high-frequency modulation signal;

[0073] Performing OFDM demodulation processing on the modulation header signal to obtain modulation parameter information;

[0074] Demodulating the high-frequency modulated signal using the modulation parameter information to obtain an information sequence to be transmitted for each user;

[0075] Using the information sequences to be transmitted of all users, the information to be transmitted is obtained;

[0076] The demodulation processing of the high-frequency modulated signal is to use the time hopping sequence of each user to determine the position of the modulated data, and then determine the corresponding data to be transmitted based on the data modulation time shift of the modulated data; the corresponding relationship between the user's data modulation time shift and the data to be transmitted is stored in the information modulation module and the information demodulation module.

[0077] The power line coupling module includes a first high-frequency transformer and a first coupling capacitor; the first high-frequency transformer is used to transmit the high-frequency modulated signal from the information modulation module to the first coupling capacitor; the first coupling capacitor is connected between the first high-frequency transformer and the power line, and is used to couple the high-frequency modulated signal to the power line while preventing the power signal on the power line from entering the information transmission device;

[0078] The power line decoupling module includes a second high-frequency transformer and a second coupling capacitor; the second coupling capacitor is connected between the second high-frequency transformer and the power line, and is used to couple the high-frequency modulated signal from the power line to the second high-frequency transformer, while preventing the power signal on the power line from entering the information transmission device; the second high-frequency transformer is used to couple the high-frequency modulated signal to the information demodulation module;

[0079] The performing modulation parameter processing on the information to be transmitted to obtain modulation parameter information includes:

[0080] Obtaining a sampling time interval T of the information to be transmitted;

[0081] Calculate the frame duration of the sampling time interval T and the information to be transmitted to obtain the frame duration T f and time scale factor θ;

[0082] According to the frame time length T f and the time scale factor θ, the pulse duration T is calculated s , T s =T f / θ;

[0083] Performing user characteristic calculation processing on the information sequence to be transmitted of each user of the information to be transmitted, to obtain the modulation pulse energy and modulation factor of each user;

[0084] Using modulation factor, modulation pulse energy, frame time length T f and pulse duration t s , construct and obtain modulation parameter information;

[0085] The frame time length is calculated based on the sampling time interval T and the information to be transmitted to obtain the frame time length T f and a time scaling factor θ, including:

[0086] Constructing a transmission matrix using a sequence of information to be transmitted for each user in the information to be transmitted as a row vector;

[0087] Calculating the norm, trace and rank of the transmission matrix;

[0088] Obtaining statistically the variance of the mean of all row vectors of the transmission matrix;

[0089] The sampling time interval T, norm value, trace value and rank value are calculated to obtain the frame time length T f ;

[0090] The frame time length t f The calculation expression is:

[0091]

[0092] Wherein, N is the row dimension of the transfer matrix, α, β, and γ are the norm value, trace value, and rank value, respectively, ρ is the variance of the mean of all row vectors of the transfer matrix, and L2() represents the second-order Legendre function.

[0093] The frame time length T f The calculation expression of integrates multiple aspects of information such as the norm value α, trace value β, rank value γ of the transmission matrix and the variance ρ of the mean of all row vectors. Different matrix eigenvalues reflect the different characteristics of the information to be transmitted. By incorporating these eigenvalues into the calculation, the overall characteristics of the information to be transmitted can be described more comprehensively and accurately. For example, the norm value reflects the overall scale of the matrix elements, the trace value is related to the sum of the eigenvalues of the matrix, the rank value reflects the linear independence of the matrix, and the variance reflects the degree of discreteness of the mean of the row vectors. The frame time length T calculated by combining this information is f It can better adapt to the actual situation of the information to be transmitted and avoid inaccuracies caused by the limitations of a single feature.

[0094] The frame time length T f The expression introduces the sampling interval T and the row dimension N of the transmission matrix, allowing the frame duration to be adaptively adjusted based on the sampling characteristics of the information being transmitted and the number of users. In practical applications, different sampling frequencies and user scales will have different impacts on information transmission. By combining T and N in the calculation, the frame duration can be more accurately tailored to actual transmission requirements, improving the efficiency and stability of information transmission.

[0095] Decomposing the transmission matrix to obtain a left decomposition matrix, a characteristic matrix, and a right decomposition matrix;

[0096] Extracting the diagonal elements of the characteristic matrix to obtain a characteristic vector;

[0097] Performing linear fitting processing on the elements and element sequence numbers of the eigenvector to obtain an approximation polynomial;

[0098] Using the mean of each row vector of the left decomposition matrix as an independent variable, inputting an approximation polynomial to obtain a corresponding output vector;

[0099] Determine the ratio of the absolute maximum value to the absolute minimum value of all elements of the output vector as the time scale factor θ;

[0100] By decomposing the transmission matrix, extracting eigenvectors, and performing linear fitting to obtain an approximating polynomial, the time scale factor is determined by calculating the output vector using the mean of the row vectors of the left-factored matrix. This method deeply explores the inherent characteristics of the transmission matrix and can capture the hidden patterns and regularities in the information to be transmitted. The eigenvectors reflect the essential characteristics of the matrix, and the approximating polynomial obtained by linear fitting can effectively model and predict these characteristics. The time scale factor calculated in this way can more accurately reflect the temporal characteristics of the information to be transmitted, providing a more precise parameter for subsequent pulse duration calculation.

[0101] The calculation expression of the decomposition process is:

[0102] Y=UAV,

[0103] Among them, U is the left decomposition matrix, Y is the transfer matrix, A is the characteristic matrix, V is the right decomposition matrix, U and V are both orthogonal matrices, and A is a diagonal matrix;

[0104] The decomposition process can be implemented by using a matrix singular value decomposition algorithm.

[0105] The linear fitting process is to use the characteristic vector element number value as a known independent variable and the characteristic vector element value as a known dependent variable, use the known independent variable and the known dependent variable to construct a curve to be approximated, and use the function approximation method to perform curve fitting on the curve to be approximated to obtain an approximation polynomial.

[0106] The variance of the mean of all row vectors is obtained by calculating the variance of the mean of all row vectors.

[0107] The singular values of the transfer matrix are obtained by a singular value calculation algorithm;

[0108] The method of using the modulation parameter information to modulate the information to be transmitted to obtain a high-frequency modulated signal includes:

[0109] Get the minimum frequency f of power line information transmission L and the highest frequency f U ;

[0110] According to the modulation factor of each user, the lowest frequency f L , maximum frequency f U and T s , construct the pulse solution model for each user;

[0111] Solve the pulse solution model for each user to obtain the modulated pulse waveform of each user;

[0112] Using the modulation pulse waveform of each user, pulse modulation processing is performed on the information sequence to be transmitted by each user to obtain the modulation signal of each user;

[0113] Performing OFDM modulation on the modulation parameter information to obtain a modulation header signal;

[0114] A high-frequency modulation signal is constructed using the modulation header signal and the modulation signals of all users;

[0115] The high-frequency modulation signal is constructed by using the modulation header signal and the modulation signals of all users. The modulation header signal and the modulation signals of all users can be arranged in series to obtain the high-frequency modulation signal; when the serial arrangement is performed, the modulation header signal is located in the first position, and the modulation signals of all users are sorted from front to back according to the user sequence number.

[0116] The expression of the impulse solution model of the k-th user is:

[0117]

[0118] h(t)=2f U sin c(2f U t)-2f L sin c(2f L t),

[0119] Where t is the time variable, τ is the time shift variable, h(t) is the intermediate function, sin c is the Singer function, δ(k) is the modulation factor of the kth user, and p k (t) is the modulated pulse waveform of the kth user to be solved;

[0120] The modulated signal of the kth user is:

[0121]

[0122] Among them, S (k) (t) represents the modulation signal of the kth user, and the pulse width is T s , A (k) represents the amplitude of the kth user, is the modulation pulse energy of the kth user, represents the jth element of the time-hopping sequence of the kth user, T c represents the unit time shift of the time-hopping sequence, represents the data modulation time shift of the jth data to be transmitted for the kth user, δi is the i-th time shift, and M is the length of the information sequence to be transmitted.

[0123] The time hopping sequence of each user is generated by a pseudo-random data generation method and is pre-stored in the information modulation module and the information demodulation module before information transmission.

[0124] The performing user characteristic calculation processing on the information sequence to be transmitted of each user of the information to be transmitted to obtain the modulation pulse energy and modulation factor of each user includes:

[0125] Performing statistical processing on the information sequence to be transmitted of each user of the information to be transmitted to obtain a statistical information set for each user; the statistical information set includes the mean, variance, median, range, and frequency domain fluctuation value of the information sequence to be transmitted; the frequency domain fluctuation value is the square root of the variance of the first-order derivative of the FFT sequence of the information sequence to be transmitted divided by the variance of the information sequence to be transmitted;

[0126] Calculate the modulation pulse energy of each user's statistical information set to obtain the modulation pulse energy of each user;

[0127] Constructing a transmission matrix using a sequence of information to be transmitted for each user in the information to be transmitted as a row vector;

[0128] Factor calculation is performed on the transmission matrix to obtain a modulation factor for each user.

[0129] The expression for calculating the modulated pulse energy is:

[0130]

[0131] in, is the modulation pulse energy of the kth user, E0 is the standard energy value, a1 k 、a2 k 、a3 k 、a4 k 、a5 k are the mean, variance, median, range and frequency domain fluctuation value of the kth information sequence to be transmitted, T2() represents the second-order polynomial of the second kind of Chebyshev polynomial, and E0 is the preset energy standard value;

[0132] The expression for calculating modulation pulse energy takes into account multiple characteristic parameters of each user's transmitted information sequence, including the mean, variance, median, range, and frequency domain fluctuation, to achieve personalized modulation pulse energy allocation. Different users may have different characteristics of their transmitted information. By comprehensively considering these characteristics, appropriate modulation pulse energy can be allocated to each user, improving the quality and reliability of information transmission. For example, for users with large data fluctuations, the modulation pulse energy can be appropriately increased to ensure accurate information transmission.

[0133] The use of second-order Chebyshev polynomials of the second kind enhances the robustness of modulated pulse energy calculations. Chebyshev polynomials possess excellent approximation and interference immunity, enabling accurate calculation of modulated pulse energy in the presence of noise and interference. They also effectively account for characteristics such as frequency domain fluctuations, making the calculated modulated pulse energy results more stable and reliable.

[0134] The expression for calculating the factor is:

[0135]

[0136] Among them, δ(k) is the modulation factor of the kth user, y kj is the element in the kth row and jth column of the transmission matrix, y j is the variance value of the jth column of the transmission matrix, M is the column dimension of the transmission matrix, and is also the length of the information sequence to be transmitted.

[0137] The modulation factor can be adaptively adjusted based on the specific characteristics of the information being transmitted. When the elements of the transmission matrix change, the modulation factor also changes accordingly, allowing the modulation process to better adapt to changes in the information. This adaptive adjustment mechanism improves the flexibility and reliability of information transmission, ensuring efficient and accurate transmission in various information transmission scenarios.

[0138] According to a second aspect of an embodiment of the present invention, a method for transmitting information in a wired network is disclosed, which is implemented using the information transmission device of the wired network, and includes:

[0139] The information modulation module is used to modulate the information to be transmitted and convert it into a high-frequency modulated signal suitable for transmission on the power line; the information to be transmitted includes the information sequence to be transmitted for each user;

[0140] Utilizing the power line coupling module, coupling the high-frequency modulated signal to the power line for transmission;

[0141] Use power lines to transmit high-frequency modulated signals;

[0142] The power line decoupling module is used to decouple the high-frequency modulated signal on the power line to the information demodulation module.

[0143] The information demodulation module is used to demodulate the decoupled high-frequency modulated signal to restore the information to be transmitted.

[0144] The foregoing is merely an embodiment of the present invention and is not intended to limit the present invention. It will be apparent to those skilled in the art that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention are intended to be included within the scope of the claims of the present invention.

Claims

1. An information transmission device for a wired network, characterized in that: include: Information modulation module, power line coupling module, power line, power line decoupling module and information demodulation module; The information modulation module is used to modulate the information to be transmitted to obtain a high-frequency modulated signal; the information to be transmitted includes the information sequence to be transmitted of each user; The power line coupling module is connected to the information modulation module and the power line, and is used to couple the high-frequency modulated signal to the power line for transmission; The power line is used to transmit high-frequency modulated signals; The power line decoupling module is connected to the power line and the information demodulation module, and is used to decouple the high-frequency modulated signal on the power line to the information demodulation module; The information demodulation module is used to demodulate the decoupled high-frequency modulated signal to restore the information to be transmitted.

2. The information transmission device of a wired network according to claim 1, wherein: The information modulation module modulates the information to be transmitted to obtain a high-frequency modulated signal, including: Performing modulation parameter processing on the information to be transmitted to obtain modulation parameter information; The information to be transmitted is modulated using the modulation parameter information to obtain a high-frequency modulated signal.

3. The information transmission device of a wired network according to claim 2, wherein: The performing modulation parameter processing on the information to be transmitted to obtain modulation parameter information includes: Obtaining a sampling time interval T of the information to be transmitted; Calculate the frame duration of the sampling time interval T and the information to be transmitted to obtain the frame duration T f and time scale factor θ; According to the frame time length T f and the time scale factor θ, the pulse duration T is calculated s , T s =T f / θ; Performing user characteristic calculation processing on the information sequence to be transmitted of each user of the information to be transmitted, to obtain the modulation pulse energy and modulation factor of each user; Using modulation factor, modulation pulse energy, frame time length T f and pulse duration T s , construct and obtain modulation parameter information.

4. The information transmission device of a wired network according to claim 3, wherein: The frame time length is calculated based on the sampling time interval T and the information to be transmitted to obtain the frame time length T f and a time scaling factor θ, including: Constructing a transmission matrix using a sequence of information to be transmitted for each user in the information to be transmitted as a row vector; Calculating the norm, trace and rank of the transmission matrix; Obtaining statistically the variance of the mean of all row vectors of the transmission matrix; The sampling time interval T, norm value, trace value and rank value are calculated to obtain the frame time length T f ; Decomposing the transmission matrix to obtain a left decomposition matrix, a characteristic matrix, and a right decomposition matrix; Extracting the diagonal elements of the characteristic matrix to obtain a characteristic vector; Performing linear fitting processing on the elements and element sequence numbers of the eigenvector to obtain an approximation polynomial; Using the mean of each row vector of the left decomposition matrix as an independent variable, inputting an approximation polynomial to obtain a corresponding output vector; The ratio of the absolute maximum value to the absolute minimum value of all elements of the output vector is determined as the time scale factor θ.

5. The information transmission device of a wired network according to claim 4, wherein: The frame time length T f The calculation expression is: Wherein, N is the row dimension of the transfer matrix, α, β, and γ are the norm value, trace value, and rank value, respectively, ρ is the variance of the mean of all row vectors of the transfer matrix, and L2() represents the second-order Legendre function.

6. The information transmission device of a wired network according to claim 4, wherein: The performing user characteristic calculation processing on the information sequence to be transmitted of each user of the information to be transmitted to obtain the modulation pulse energy and modulation factor of each user includes: Performing statistical processing on the information sequence to be transmitted of each user of the information to be transmitted to obtain a statistical information set for each user; the statistical information set includes the mean, variance, median, range, and frequency domain fluctuation value of the information sequence to be transmitted; the frequency domain fluctuation value is the square root of the variance of the first-order derivative of the FFT sequence of the information sequence to be transmitted divided by the variance of the information sequence to be transmitted; Calculate the modulation pulse energy of each user's statistical information set to obtain the modulation pulse energy of each user; Constructing a transmission matrix using a sequence of information to be transmitted for each user in the information to be transmitted as a row vector; Factor calculation is performed on the transmission matrix to obtain a modulation factor for each user.

7. The information transmission device of a wired network according to claim 6, wherein: The expression for calculating the modulated pulse energy is: in, is the modulation pulse energy of the kth user, E0 is the standard energy value, a1 k 、a2 k 、a3 k 、a4 k 、a5 k are the mean, variance, median, range and frequency domain fluctuation value of the kth information sequence to be transmitted, T2() represents the second-order polynomial of the second kind of Chebyshev polynomial, and E0 is the preset energy standard value.

8. The information transmission device of a wired network according to claim 6, wherein: The expression for calculating the factor is: Among them, δ(k) is the modulation factor of the kth user, y kj is the element in the kth row and jth column of the transmission matrix, y j is the variance value of the jth column of the transmission matrix, M is the column dimension of the transmission matrix, and is also the length of the information sequence to be transmitted.

9. The information transmission device of a wired network according to claim 6, wherein: The method of using the modulation parameter information to modulate the information to be transmitted to obtain a high-frequency modulated signal includes: Get the minimum frequency f of power line information transmission L and the highest frequency f U ; According to the modulation factor of each user, the lowest frequency f L , maximum frequency f U and T s , construct the pulse solution model for each user; Solve the pulse solution model for each user to obtain the modulated pulse waveform of each user; Using the modulation pulse waveform of each user, pulse modulation processing is performed on the information sequence to be transmitted by each user to obtain the modulation signal of each user; Performing OFDM modulation on the modulation parameter information to obtain a modulation header signal; A high-frequency modulation signal is constructed using the modulation header signal and the modulation signals of all users.

10. The information transmission device of a wired network according to claim 9, wherein: The expression of the impulse solution model of the kth user is: h(t)=2f U sin c(2f U t)-2f L sin c(2f L t), Where t is the time variable, τ is the time shift variable, h(t) is the intermediate function, sin c is the Singer function, δ(k) is the modulation factor of the kth user, and p k (t) is the modulated pulse waveform of the kth user to be solved.

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