CN-121418006-B - Method and system for predicting and optimizing high-frequency signal transmission quality of component

CN121418006BCN 121418006 BCN121418006 BCN 121418006BCN-121418006-B

Abstract

The invention provides a method and a system for predicting and optimizing the transmission quality of high-frequency signals of components, which relate to the technical field of signal transmission and comprise the steps of extracting attenuation change rate of each frequency band based on frequency domain characteristics of signals to be transmitted of the components and physical characteristic parameters of a transmission path, and establishing an association function with the boundary position of the frequency band; calculating the predicted loss spectrum of the transmission path terminal, determining the compensation gain coefficient, carrying out frequency selective amplitude adjustment on the signal to be transmitted, collecting and comparing the actual received signal with the target frequency domain amplitude distribution, and updating the correlation function. The invention realizes accurate prediction and self-adaptive optimization of high-frequency signal transmission quality and improves signal transmission integrity.

Inventors

LI ZHIBIN
YU ZHENXING
WEI JINSHI
ZHANG QIUSHI

Assignees

北京飞航捷迅科技有限公司

Dates

Publication Date: 20260508
Application Date: 20251111

Claims (9)

1. The method for predicting and optimizing the transmission quality of the high-frequency signals of the components is characterized by comprising the following steps: Extracting the attenuation change rate of the component to be transmitted in the transmission path according to each frequency band based on the obtained frequency domain characteristics of the component to be transmitted signal and the physical characteristic parameters of the transmission path, and establishing a correlation function between the attenuation change rate and the frequency band boundary position according to the physical characteristic parameters; Calculating the predicted attenuation of each frequency component of the signal to be transmitted at a transmission path terminal based on the correlation function to obtain a predicted loss spectrum; performing frequency selective amplitude adjustment on the signal to be transmitted at a transmission starting point according to the compensation gain coefficient, so that each frequency component in the signal to be transmitted is differentially amplified according to the compensation gain coefficient to obtain a compensated signal; Injecting the compensated signal into the transmission path for transmission, and collecting an actual received signal of the compensated signal after transmission at a terminal of the transmission path; and comparing the frequency domain amplitude distribution of the actual received signal with a preset target frequency domain amplitude distribution frequency by frequency band, calculating the amplitude deviation value of each frequency band, generating correction quantity aiming at the function parameters in the correlation function according to the amplitude deviation value, and updating the correlation function by using the correction quantity.
2. The method of claim 1, wherein extracting the attenuation change rate of each frequency band in the transmission path and establishing a correlation function between the attenuation change rate and a frequency band boundary position according to the physical characteristic parameter comprises: dividing the frequency domain feature into a plurality of continuous frequency bands according to the distribution density of frequency components in the frequency domain feature, wherein each frequency band has a starting boundary frequency and a terminating boundary frequency; For each frequency band, calculating an attenuation gradient of signal amplitude along with frequency change in the frequency band based on the dielectric loss factor and the transmission path length in the physical characteristic parameters, and taking the attenuation gradient as the attenuation change rate of the frequency band; And establishing a correlation function describing a mapping rule between the boundary positions of the frequency bands and the attenuation change rate by fitting operation by taking the initial boundary frequency and the end boundary frequency of all the frequency bands as independent variables and the attenuation change rate of the corresponding frequency bands as dependent variables.
3. The method of claim 1, wherein calculating a predicted attenuation amount of each frequency component of the signal to be transmitted at a transmission path terminal based on the correlation function to obtain a predicted loss spectrum, and wherein determining, based on the predicted loss spectrum, a compensation gain coefficient corresponding to the attenuation amount of each frequency component in the predicted loss spectrum by a reverse mapping operation comprises: For each frequency value in the frequency component set, substituting the frequency value into the correlation function, determining the attenuation change rate of the frequency band to which the frequency value belongs through the correlation function, and calculating the predicted attenuation corresponding to the frequency value according to the attenuation change rate and the physical characteristic parameter of the transmission path; According to the predicted attenuation value range of each frequency component in the predicted loss spectrum, dividing the frequency component in the predicted loss spectrum into a plurality of attenuation levels, wherein each attenuation level comprises frequency components with predicted attenuation values in the same value interval; for each attenuation level, determining a reference compensation gain coefficient of the attenuation level through inverse mapping operation based on a central value of a predicted attenuation value interval corresponding to the attenuation level, and giving all frequency components in the attenuation level as respective compensation gain coefficients; And performing association storage on all the frequency components and the corresponding compensation gain coefficients to form a compensation gain coefficient set.
4. A method according to claim 3, wherein for each attenuation level, determining the reference compensation gain coefficient for that attenuation level by an inverse mapping operation based on the central value of the predicted attenuation value interval for that attenuation level comprises: taking the arithmetic average value of the upper limit value and the lower limit value of the predicted attenuation value interval corresponding to each attenuation level as a central value, and taking the difference value of the upper limit value and the lower limit value as interval width; Acquiring an initial intensity value of a signal at a starting position of a transmission path, and acquiring a target intensity value which the signal reaches after transmission compensation; and calculating a compensation tolerance coefficient corresponding to the attenuation level through a monotonically decreasing mapping relation based on the relative dispersion parameter, wherein the compensation tolerance coefficient represents the maximum allowable proportion of the signal strength after compensation in the attenuation level, which is allowed to deviate from a target strength value, and the compensation tolerance coefficient is used as a reference compensation gain coefficient.
5. The method of claim 4, wherein performing frequency selective amplitude adjustment on the signal to be transmitted at a transmission start point according to the compensation gain coefficient, so that each frequency component in the signal to be transmitted is differentially amplified according to the compensation gain coefficient, and obtaining the compensated signal comprises: Identifying all discrete frequency components from the signal to be transmitted, and extracting a frequency value and an initial amplitude value of each frequency component; for each frequency component, searching a corresponding compensation gain coefficient in the compensation gain coefficient set according to the frequency value of the frequency component; Calculating the total energy of the signal to be transmitted in a frequency domain, determining an allowable maximum total energy threshold according to the power limit requirement of a transmission starting point, and calculating an energy margin between the total energy and the maximum total energy threshold; Performing product operation on the initial amplitude value of each frequency component and the corresponding compensation gain coefficient to obtain a preliminary adjustment amplitude value, and performing normalized scaling on the preliminary adjustment amplitude values of all frequency components according to the energy margin to obtain an adjusted amplitude value of each frequency component meeting the power limit; The method comprises the steps of obtaining frequency components of a frequency domain signal, keeping the frequency value and phase information of each frequency component unchanged, replacing the initial amplitude value of each frequency component with a corresponding adjusted amplitude value, reconstructing to obtain an adjusted frequency domain signal, carrying out time domain inverse transformation on the adjusted frequency domain signal, and converting the adjusted frequency domain signal from a frequency domain representation to a time domain representation to obtain a compensated signal.
6. The method of claim 1, wherein generating a correction amount for a function parameter in the correlation function from the amplitude deviation value, and updating the correlation function with the correction amount comprises: Obtaining a plurality of verification sample points, applying a preset disturbance increment to each function parameter in the correlation function, calculating the output value variation amplitude of the correlation function on all verification sample points before and after the disturbance increment is applied, and carrying out ratio operation on the output value variation amplitude and the disturbance increment to obtain a deviation sensitivity coefficient corresponding to the function parameter; calculating a gradient vector of an output value of the correlation function relative to the function parameter based on the amplitude deviation value, carrying out symbol statistics on each component in the gradient vector, determining a dominant symbol with a dominant negative gradient direction, and determining a correction direction indicator of the function parameter according to the dominant symbol; And performing sign assignment on the basic correction amplitude according to the correction direction indicator to obtain the correction quantity of the function parameter.
7. Component high frequency signal transmission quality prediction and optimization system for implementing the method according to any one of claims 1-6, comprising: The first unit is used for extracting the attenuation change rate of the component to be transmitted in the transmission path according to the acquired frequency domain characteristics of the component to be transmitted and the physical characteristic parameters of the transmission path, and establishing a correlation function between the attenuation change rate and the boundary position of the frequency band according to the physical characteristic parameters; the second unit is used for calculating the predicted attenuation of each frequency component of the signal to be transmitted at the transmission path terminal based on the correlation function to obtain a predicted loss spectrum; The third unit is used for carrying out frequency selective amplitude adjustment on the signal to be transmitted at a transmission starting point according to the compensation gain coefficient, so that each frequency component in the signal to be transmitted is differentially amplified according to the compensation gain coefficient to obtain a compensated signal; A fourth unit, configured to inject the compensated signal into the transmission path for transmission, and collect, at a terminal of the transmission path, an actual received signal of the compensated signal after transmission; And a fifth unit, configured to compare the frequency domain amplitude distribution of the actual received signal with a preset target frequency domain amplitude distribution, calculate an amplitude deviation value of each frequency band, generate a correction amount for a function parameter in the correlation function according to the amplitude deviation value, and update the correlation function with the correction amount.
8. An electronic device, comprising: A processor; A memory for storing processor-executable instructions; Wherein the processor is configured to invoke the instructions stored in the memory to perform the method of any of claims 1 to 6.
9. A computer readable storage medium having stored thereon computer program instructions, which when executed by a processor, implement the method of any of claims 1 to 6.

Description

Method and system for predicting and optimizing high-frequency signal transmission quality of component Technical Field The invention relates to the technical field of signal transmission, in particular to a method and a system for predicting and optimizing the quality of high-frequency signal transmission of components. Background With the continuous improvement of the integration level of electronic devices and the rapid development of communication technology, the transmission quality of high-frequency signals between components has become a key factor affecting the overall system performance. The high-frequency signal is affected by physical characteristics of a transmission path, such as impedance mismatch, dielectric loss, radiation loss and the like, in the transmission process, so that signal attenuation, distortion and phase delay are caused, and the integrity and reliability of the signal are affected. Particularly in the application scenes of high-speed data transmission, radio frequency communication, radar systems and the like, the quality of signal transmission is directly related to the working performance and stability of the system. The traditional high-frequency signal transmission quality prediction method mainly depends on an empirical formula or a simplified model, and it is difficult to accurately describe the attenuation characteristics of signals in a complex transmission environment. Meanwhile, the existing signal optimization means often adopts a unified compensation strategy, and cannot be finely adjusted for the differential attenuation characteristics of different frequency components. Furthermore, conventional methods are typically static compensation, lacking the ability to dynamically evaluate and adaptively optimize the actual transmission effects. Disclosure of Invention The embodiment of the invention provides a method and a system for predicting and optimizing the transmission quality of high-frequency signals of components and parts, which can solve the problems in the prior art. In a first aspect of the embodiment of the present invention, a method for predicting and optimizing transmission quality of a high-frequency signal of a component is provided, including: Extracting the attenuation change rate of the component to be transmitted in the transmission path according to each frequency band based on the obtained frequency domain characteristics of the component to be transmitted signal and the physical characteristic parameters of the transmission path, and establishing a correlation function between the attenuation change rate and the frequency band boundary position according to the physical characteristic parameters; Calculating the predicted attenuation of each frequency component of the signal to be transmitted at a transmission path terminal based on the correlation function to obtain a predicted loss spectrum; performing frequency selective amplitude adjustment on the signal to be transmitted at a transmission starting point according to the compensation gain coefficient, so that each frequency component in the signal to be transmitted is differentially amplified according to the compensation gain coefficient to obtain a compensated signal; Injecting the compensated signal into the transmission path for transmission, and collecting an actual received signal of the compensated signal after transmission at a terminal of the transmission path; and comparing the frequency domain amplitude distribution of the actual received signal with a preset target frequency domain amplitude distribution frequency by frequency band, calculating the amplitude deviation value of each frequency band, generating correction quantity aiming at the function parameters in the correlation function according to the amplitude deviation value, and updating the correlation function by using the correction quantity. Extracting the attenuation change rate of each frequency band in the transmission path, and establishing a correlation function between the attenuation change rate and the frequency band boundary position according to the physical characteristic parameter comprises the following steps: dividing the frequency domain feature into a plurality of continuous frequency bands according to the distribution density of frequency components in the frequency domain feature, wherein each frequency band has a starting boundary frequency and a terminating boundary frequency; For each frequency band, calculating an attenuation gradient of signal amplitude along with frequency change in the frequency band based on the dielectric loss factor and the transmission path length in the physical characteristic parameters, and taking the attenuation gradient as the attenuation change rate of the frequency band; And establishing a correlation function describing a mapping rule between the boundary positions of the frequency bands and the attenuation change rate by fitting operation by taking the initial bo