Digital signal low-power-consumption repeater system based on gain adaptive intelligent adjustment

Abstract

The invention discloses a digital signal low-power-consumption repeater system based on gain adaptive intelligent adjustment, relates to the technical field of repeaters, solves the problems of coverage imbalance, low energy efficiency, operation and maintenance lag and the like in the prior art, performs gain adjustment on downlink signals (from a base station to a terminal) and uplink signals (from the terminal to the base station) at the same time, and improves the system performance. The problem of bidirectional communication quality imbalance caused by traditional single link adjustment is avoided; geometric feature analysis is performed on a transmitting antenna coverage area through the area parameter test end, a signal blind area is accurately positioned, and the calibration parameter determination end selects an equilibrium solution from an adjustment interval through a mathematical averaging method to avoid falling into local optimum; for example, a midpoint value is selected as the optimal frequency in the frequency adjustment interval [f, f-Xz], balance can be obtained between the coverage area and the bandwidth utilization rate, and the situation that the data rate is reduced due to excessive frequency reduction is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of repeater stations, in particular to a digital signal low-power repeater system based on gain adaptive intelligent regulation. Background Art

[0002] In the wireless communications field, repeaters, as a key device for enhancing signal coverage, are widely used to fill signal blind spots and weak coverage areas indoors and outdoors. Traditional repeaters typically use a fixed gain adjustment mode, requiring manual presetting or a simple automatic power control (APC) mechanism, making them difficult to adapt to complex and changing wireless environments. The application with publication number CN206993122U discloses a low-power GSM-R digital fiber optic repeater, including a near-end unit, a far-end unit, a remote power supply subsystem, an antenna feed system, and a network management system. The far-end unit uses existing railway cables for DC 450V power supply. The low-power core processing component of the base station adopts a zero-IF digital board, which is connected to a digital signal processor. The digital baseband of the base station is composed of an FPGA chip, an XC7A100T, an ARM chip, and an STM32F207VGT6. The near-end unit transmits the signal to the far-end unit via optical fiber. The far-end unit is equipped with a frequency converter that converts the digital signal into an analog signal and performs up-conversion processing. After amplification by the frequency converter amplifier, it is transmitted through the antenna feed system to complete the base station signal extension coverage. The zero-IF technology architecture is used to directly down-convert the RF signal to zero frequency and then perform AD conversion, which reduces the intermediate frequency processing link and reduces the power consumption of the whole unit. The gain adjustment thresholds (e.g., preset gain differences) of existing repeaters are typically fixed, making them unable to dynamically adapt to signal propagation characteristics in different scenarios. For example, in densely populated urban areas, where signal diffraction loss is significant, fixed thresholds can lead to delayed or excessive gain adjustment. In open suburban environments, however, the same thresholds can lead to wasted gain or interference due to better signal propagation conditions. As 5G / 6G communications develop towards high-frequency bands and high-density networking, the complexity of the wireless environment and user requirements for coverage quality have significantly increased, and the limitations of traditional repeaters have become increasingly prominent. There is an urgent need for an intelligent repeater system that can adjust gain bidirectionally, dynamically adapt to the environment, finely manage coverage areas, and achieve coordinated optimization of frequency and gain, so as to solve problems such as coverage imbalance, low energy efficiency, and delayed operation and maintenance in existing technologies and meet high-quality communication needs in diverse scenarios. Summary of the Invention

[0003] In response to the shortcomings of the existing technology, the present invention provides a digital signal low-power repeater system based on gain adaptive intelligent adjustment, which solves the problems of coverage imbalance, low energy efficiency, delayed operation and maintenance in the existing technology.

[0004] To achieve the above objectives, the present invention is implemented through the following technical solutions: a digital signal low-power repeater system based on gain adaptive intelligent adjustment, comprising: The relevant data processing end confirms the gain difference based on the quota parameters set for the amplified signal by the wireless modulation unit signal interface in the repeater and the difference in signal strength between the repeater signal input port and the wireless modulation and demodulation unit, and determines whether the gain needs to be adjusted; The specific method for confirming the gain difference is as follows: The level value of the amplified signal set at the wireless modulation unit signal interface is calibrated as Po, the subcarrier bandwidth is calibrated as Bo, the carrier bandwidth is calibrated as D, and the difference between the signal input port of the repeater and the received signal strength of the wireless modulation and demodulation unit is calibrated as m, where m ≥ 0; Use: P 满载 =Po+m+10×log(D÷Bo), confirm the full load total power P of the repeater input port 满载 ; The repeater output power is calibrated as P 额 , using: ZY=P 额 -P 满载 Confirm the gain difference ZY associated with the corresponding repeater; The specific method for determining whether the gain needs to be adjusted is: The determined gain difference ZY is compared with a preset threshold value Y1: if ZY>Y1, a gain increase signal is generated, and the gain increase signal and the gain difference ZY are transmitted to the debugging processing end, where Y1 is a preset judgment value; If ZY=Y1, no processing is required; If ZY < Y1, the original gain associated with the repeater is calibrated to Z1, and the reduction gain Zc is determined using: Zc = |Z1-ZY|, and a gain reduction signal is generated synchronously. The gain reduction signal and the reduction gain Zc are transmitted to the debugging processing end; The debugging processing end performs initial adjustment on the gain associated with the repeater based on the adjustment signal and adjustment parameters sent by the relevant data processing end. The specific method is as follows: If the received adjustment signal is a gain increase signal, the gain associated with the repeater is increased by ZY according to the determined gain difference ZY; If the received adjustment signal is a gain reduction signal, the gain associated with the repeater is reduced by Zc according to the determined downward gain Zc; The regional parameter test terminal verifies the area covered by each transmitting antenna of the repeater station and confirms the regional characteristics associated with the corresponding transmitting antenna based on the signal strength at different points in the coverage area. The specific method is as follows: From the preset parameters, confirm the area covered by each transmitting antenna, lock the longest inner diameter of the corresponding coverage area, record the line segment associated with the longest inner diameter as the longest line segment, and mark the inner center point of the longest line segment as the built-in midpoint; Use a signal strength tester to determine the signal strength associated with different points in the coverage area. Points that meet the following conditions: signal strength ≥ Y2 are recorded as high-intensity points, where Y2 is a preset value, and points that do not meet the conditions are recorded as low-intensity points. From the determined sets of low-intensity points, lock the set of low-intensity points closest to the built-in midpoint, record the distance between the low-intensity points and the built-in midpoint as L1, and record the radius of the longest line segment as R1. Use: Tz = (R1-L1) to confirm the feature difference Tz, and use the determined L1, R1 and Tz as the regional features of the corresponding coverage area; The associated feature processing end determines the feature to be adjusted associated with the corresponding coverage area based on the signal frequency associated with the transmitting antenna corresponding to the repeater and the regional feature associated with the corresponding coverage area. The specific method is as follows: The determined signal frequency is calibrated as f, and the distance value L1 between the low intensity point and the built-in midpoint is identified from the regional features associated with the corresponding coverage area, using: gain loss = 20log 10 (L1) + 20log 10 (f) + 18, confirm the gain loss associated with the corresponding frequency f and L1, and keep the gain loss unchanged, reduce the signal frequency f by one unit frequency, record the value change of L1 and the change value Bh, and then use: Tz ÷ Bh = Xz to obtain the frequency correction value Xz. Then, based on the determined frequency correction value Xz, confirm the frequency change range [f, f-Xz] associated with the corresponding signal frequency; Keeping the original associated signal frequency f unchanged, gradually increase the gain loss and record the change value Bz of L1 for each unit gain increase. The unit gain is the preset gain. The gain correction value Xq is obtained by using the formula: Tz ÷ Bz = Xq. Based on the determined gain correction value Xq and the gain value ZZ of the corresponding repeater after preliminary debugging, determine the gain change range [ZZ, ZZ + Xq] that needs to be debugged in the corresponding coverage area. The frequency change interval [f, f-Xz] and gain change interval [ZZ, ZZ+Xq] confirmed in the corresponding coverage area are transmitted to the calibration parameter determination terminal; The calibration parameter determination end selects the optimal adjustment value from the corresponding features to be adjusted based on the features to be adjusted confirmed by the associated feature processing end, and transmits the selected optimal adjustment value to the debugging processing end for parameter debugging. The specific method is as follows: According to the frequency change interval [f, f-Xz] and gain change interval [ZZ, ZZ+Xq] confirmed in the corresponding coverage area, use: P 最佳 = (2f - Xz) ÷ 2 and Z 最佳 =(2ZZ+Xq)÷2Confirm the optimal adjustment frequency value P 最佳 And the optimal adjustment gain value Z 最佳 ; And the confirmed optimal adjustment frequency value P 最佳 And the optimal adjustment gain value Z 最佳 Transmitted to the debugging processing end.

[0005] Preferably, the debugging processing end adjusts the frequency value P based on the optimal value determined in the corresponding coverage area. 最佳 And the optimal adjustment gain value Z 最佳 The frequency value and gain value associated with the repeater are adjusted to complete the gain adaptive adjustment process of the corresponding repeater.

[0006] The present invention provides a digital signal low-power repeater system based on gain adaptive intelligent adjustment. Compared with the existing technology, it has the following advantages: This invention simultaneously adjusts the gain of both downlink signals (base station → terminal) and uplink signals (terminal → base station), avoiding the imbalance in bidirectional communication quality caused by traditional single-link adjustment. For example, in scenarios with weak downlink signal coverage, simultaneously increasing the uplink gain ensures terminal return signal strength, avoiding one-way communication failures such as "able to receive but unable to send"; The regional parameter tester analyzes the geometric characteristics of the transmitting antenna's coverage area (such as the longest inner diameter R1, the built-in midpoint, and the low-intensity point distance L1) to accurately locate signal blind spots. The calibration parameter determination end uses mathematical averaging to select an equilibrium solution from the adjustment range to avoid falling into a local optimum. For example, selecting the midpoint value in the frequency adjustment range [f, f-Xz] as the optimal frequency can achieve a balance between coverage and bandwidth utilization, avoiding excessive frequency reduction that would cause a decrease in data rate. This system uses a three-dimensional architecture of "bidirectional signal adjustment + regional feature perception + multi-parameter collaboration + intelligent algorithm optimization" to break through the "one-size-fits-all" adjustment model of traditional repeater stations and achieve an upgrade from "extensive coverage" to "precise service". BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 It is a schematic diagram of the principle framework of the present invention. DETAILED DESCRIPTION

[0008] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0009] First embodiment See also Figure 1 The present application provides a digital signal low-power repeater system based on gain adaptive intelligent adjustment, including a relevant data processing end, a debugging processing end, a regional parameter testing end, an associated feature processing end, and a calibration parameter determination end, wherein the relevant data processing end is electrically connected to the debugging processing end input node, and the debugging processing end, the regional parameter testing end, the associated feature processing end, and the calibration parameter determination end are electrically connected from the output node to the input node in sequence, and the calibration parameter determination end is electrically connected to the debugging processing end input node; The relevant data processing end verifies the gain difference based on the quota parameters set for the amplified signal by the wireless modulation unit signal interface in the repeater and the difference in signal strength between the repeater signal input port and the wireless modulation and demodulation unit, and determines whether the gain needs to be adjusted. This applies not only to the downlink signal (the signal distributed from top to bottom, that is, the specific signal distributed to different terminals), but also to the uplink signal (the specific signal returned by different terminals, that is, the corresponding uplink signal). The specific method for confirming the gain difference is as follows: The level value of the amplified signal set at the wireless modulation unit signal interface is calibrated as Po, the subcarrier bandwidth is calibrated as Bo, the carrier bandwidth is calibrated as D, and the difference between the signal input port of the repeater and the received signal strength of the wireless modulation and demodulation unit is calibrated as m, where m ≥ 0; Use: P 满载 =Po+m+10×log(D÷Bo), confirm the full load total power P of the repeater input port 满载 ; The repeater output power is calibrated as P 额 , using: ZY=P 额 -P 满载 Confirm the gain difference ZY associated with the corresponding repeater; The specific method for determining whether the gain needs to be adjusted is: The determined gain difference ZY is compared with the preset threshold Y1: if ZY>Y1, a gain increase signal is generated and the gain increase signal and the gain difference ZY are transmitted to the debugging processing end, where Y1 is a preset judgment value, generally 5dB; If ZY=Y1, no processing is required; If ZY < Y1, the original gain associated with the repeater is calibrated to Z1, and the reduction gain Zc is determined using: Zc = |Z1-ZY|, and a gain reduction signal is generated synchronously. The gain reduction signal and the reduction gain Zc are transmitted to the debugging processing end; Specifically, when the gain difference is greater than the preset threshold, it indicates that the signal power received by the repeater is low. If the gain is not increased at this time, the signal strength received by the user terminal will be insufficient to meet communication needs, and the signal coverage quality will also be affected. Therefore, the core purpose of increasing the gain is to enhance the signal strength and ensure that the signal can be effectively transmitted to the user terminal. In order to achieve two-way optimization of the communication link, it is necessary to increase the amplification gain of the downlink and uplink signals at the same time to ensure that the signals from the base station to the user terminal and from the user terminal to the base station can be transmitted stably; If the gain difference is less than the preset threshold and the second difference from the original downlink gain meets the conditions, it indicates that the signal power received by the repeater is too strong and the original gain setting is too high. In this case, excessive signal amplification may cause interference, affect the surrounding communication environment, and waste energy. Therefore, the main purpose of reducing gain is to avoid signal interference and reduce power consumption. It is only necessary to appropriately reduce the gain of the downlink and uplink signals according to the actual situation to keep the signal strength within a reasonable range and maintain efficient and stable operation of the repeater.

[0010] The debugging processing end performs an initial adjustment on the gain associated with the repeater according to the adjustment signal and adjustment parameters sent by the relevant data processing end. The specific method of the initial adjustment is as follows: If the received adjustment signal is a gain increase signal, the gain associated with the repeater is increased by ZY according to the determined gain difference ZY; If the received adjustment signal is a gain reduction signal, the gain associated with the repeater is reduced by Zc according to the determined downward gain Zc.

[0011] Among them, the regional parameter test end confirms the area covered by each transmitting antenna of the repeater station, and confirms the regional characteristics associated with the corresponding transmitting antenna based on the signal strength of different points in the coverage area, and transmits the confirmed regional characteristics to the associated characteristic processing end. Specifically, the so-called regional characteristics are the radiation range of the transmitting antenna in the corresponding area. When the corresponding radiation range is sufficient, the signal strength of any point in the corresponding coverage area meets the standard. If the corresponding radiation range is insufficient, the signal strength at the edge of the corresponding coverage area will not meet the standard, then it is necessary to specifically confirm the regional characteristics. The specific method for confirming the regional characteristics is as follows: From the preset parameters, confirm the area covered by each transmitting antenna and lock the longest inner diameter of the corresponding coverage area (the so-called longest inner diameter is the longest line between the contour points in the corresponding area). The line segment associated with the longest inner diameter is recorded as the longest line segment, and the inner center point of the longest line segment is calibrated as the built-in midpoint; Use a signal strength tester to determine the signal strength associated with different points in the coverage area. Points that meet the following conditions: signal strength ≥ Y2 are recorded as high-intensity points. Y2 is a preset value, and its specific value is determined by the operator based on experience. Points that do not meet the conditions are recorded as low-intensity points. From the determined sets of low-intensity points, lock the set of low-intensity points closest to the built-in midpoint, record the distance between the low-intensity points and the built-in midpoint as L1, and record the radius of the longest line segment as R1. Use: Tz = (R1-L1) to confirm the feature difference Tz, and use the determined L1, R1 and Tz as the regional features of the corresponding coverage area; Specifically, the so-called regional characteristics of the corresponding coverage area refer to the coverage area not covered by the corresponding transmitting antenna. The signal strength associated with the specific uncovered area cannot meet the requirements. In order to make the transmitting antenna of each different coverage area meet the corresponding regional strength, it is necessary to adjust the gain of the repeater and the frequency parameters of the signal to ensure that the corresponding coverage area can fully meet the coverage standard.

[0012] Among them, the associated feature processing end confirms the feature to be adjusted associated with the corresponding coverage area based on the signal frequency associated with the transmitting antenna corresponding to the repeater and the regional feature associated with the corresponding coverage area, and transmits the confirmed feature to be adjusted to the calibration parameter determination end. Specifically, each different coverage area has different regional features. By adjusting the signal frequency and reducing the signal frequency, the coverage range of the corresponding signal can be increased. Therefore, the signal frequency range that needs to be adjusted can be confirmed, and then the associated radiation distance can be determined by adjusting the signal gain. The determined signal frequency is calibrated as f, and the distance value L1 between the low intensity point and the built-in midpoint is identified from the regional features associated with the corresponding coverage area, using: gain loss = 20log 10 (L1) + 20log 10 (f) + 18, confirm the corresponding frequency f and the gain loss associated with L1, and keep the gain loss unchanged, reduce the signal frequency f by one unit frequency, record the value change of L1 and the change value Bh, and then use: Tz ÷ Bh = Xz to obtain the frequency correction value Xz. Then, based on the determined frequency correction value Xz, confirm the frequency change range [f, f-Xz] associated with the corresponding signal frequency, where the unit frequency is 1 GHz; Keeping the original associated signal frequency f unchanged, gradually increase the gain loss and record the change value Bz of L1 for each unit gain increase. The unit gain is the preset gain, generally 1dB. Use Tz÷Bz=Xq to obtain the gain correction value Xq. Based on the determined gain correction value Xq and the gain value ZZ of the corresponding repeater after preliminary debugging, determine the gain change range [ZZ, ZZ+Xq] that needs to be debugged in the corresponding coverage area. The frequency change interval [f, f-Xz] and gain change interval [ZZ, ZZ+Xq] confirmed in the corresponding coverage area are transmitted to the calibration parameter determination terminal; Specifically, based on the corresponding frequency characteristics and gain values, and taking into account the corresponding spatial loss, the associated frequency f and signal distance L1 are confirmed and adjusted specifically, and the associated characteristic values ​​can be confirmed in turn, thereby confirming the value range that needs to be debugged in the corresponding coverage area, so as to ensure that the signals associated with each area can achieve full coverage.

[0013] The calibration parameter determination end selects an optimal adjustment value from the corresponding features to be adjusted based on the features to be adjusted confirmed by the associated feature processing end, and transmits the selected optimal adjustment value to the debugging processing end for parameter debugging. The specific method for selecting the optimal adjustment value is: According to the frequency change interval [f, f-Xz] and gain change interval [ZZ, ZZ+Xq] confirmed in the corresponding coverage area, use: P 最佳 = (2f - Xz) ÷ 2 and Z 最佳 =(2ZZ+Xq)÷2Confirm the optimal adjustment frequency value P 最佳 And the optimal adjustment gain value Z 最佳 ; And the confirmed optimal adjustment frequency value P 最佳 And the optimal adjustment gain value Z 最佳 Transmitted to the debugging processing end.

[0014] The debugging processing end adjusts the frequency value P based on the optimal value determined by the corresponding coverage area. 最佳 And the optimal adjustment gain value Z 最佳 The frequency value and gain value associated with the repeater are adjusted to complete the gain adaptive adjustment process of the corresponding repeater.

[0015] Some of the data in the above formulas are dimensionless and numerically calculated. Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0016] The above embodiments are only used to illustrate the technical method of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical method of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical method of the present invention.

Claims

1. A digital signal low-power repeater system based on gain adaptive intelligent adjustment, characterized in that: include: The relevant data processing end confirms the gain difference based on the quota parameters set for the amplified signal by the wireless modulation unit signal interface in the repeater and the difference in signal strength between the repeater signal input port and the wireless modulation and demodulation unit, and determines whether the gain needs to be adjusted; The debugging processing end performs initial adjustment on the gain associated with the repeater based on the adjustment signal and adjustment parameters sent by the relevant data processing end; The regional parameter test terminal verifies the area covered by each transmitting antenna of the repeater station and confirms the regional characteristics associated with the corresponding transmitting antenna based on the signal strength at different points in the coverage area. The associated feature processing end determines the feature to be adjusted associated with the corresponding coverage area based on the signal frequency associated with the transmitting antenna corresponding to the repeater and the regional feature associated with the corresponding coverage area; The calibration parameter determination end selects the optimal adjustment value from the corresponding features to be adjusted based on the features to be adjusted confirmed by the associated feature processing end, and transmits the selected optimal adjustment value to the debugging processing end for parameter debugging.

2. The digital signal low-power repeater system based on gain adaptive intelligent adjustment according to claim 1 is characterized in that: The specific method for confirming the gain difference at the relevant data processing end is: The level value of the amplified signal set at the wireless modulation unit signal interface is calibrated as Po, the subcarrier bandwidth is calibrated as Bo, the carrier bandwidth is calibrated as D, and the difference between the signal input port of the repeater and the received signal strength of the wireless modulation and demodulation unit is calibrated as m, where m ≥ 0; Use: P 满载 =Po+m+10×log(D÷Bo), confirm the full load total power P of the repeater input port 满载 ; The repeater output power is calibrated as P 额 , using: ZY=P 额 -P 满载 Confirm the gain difference ZY associated with the corresponding repeater.

3. The digital signal low-power repeater system based on gain adaptive intelligent adjustment according to claim 2, characterized in that: The specific method for the relevant data processing end to determine whether the gain needs to be adjusted is: The determined gain difference ZY is compared with a preset threshold value Y1: if ZY>Y1, a gain increase signal is generated, and the gain increase signal and the gain difference ZY are transmitted to the debugging processing end, where Y1 is a preset judgment value; If ZY<Y1, the original gain associated with the repeater is calibrated to Z1, and the reduction gain Zc is determined using: Zc=|Z1-ZY|, and a gain reduction signal is generated synchronously. The gain reduction signal and the reduction gain Zc are transmitted to the debugging processing end.

4. The digital signal low-power repeater system based on gain adaptive intelligent adjustment according to claim 3 is characterized in that: If ZY=Y1, no processing is required.

5. The digital signal low-power repeater system based on gain adaptive intelligent adjustment according to claim 3 is characterized in that: The specific method of the debugging processing end for initially adjusting the gain associated with the repeater is as follows: If the received adjustment signal is a gain increase signal, the gain associated with the repeater is increased by ZY according to the determined gain difference ZY; If the received adjustment signal is a gain reduction signal, the gain associated with the repeater is reduced by Zc according to the determined downward gain Zc.

6. The digital signal low-power repeater system based on gain adaptive intelligent adjustment according to claim 1, characterized in that: The specific method of confirming the regional characteristics associated with the coverage area by the regional parameter test terminal is: From the preset parameters, confirm the area covered by each transmitting antenna, lock the longest inner diameter of the corresponding coverage area, record the line segment associated with the longest inner diameter as the longest line segment, and mark the inner center point of the longest line segment as the built-in midpoint; Use a signal strength tester to determine the signal strength associated with different points in the coverage area. Points that meet the following conditions: signal strength ≥ Y2 are recorded as high-intensity points, where Y2 is a preset value, and points that do not meet the conditions are recorded as low-intensity points. And from the determined groups of low-intensity points, lock the group of low-intensity points closest to the built-in midpoint, and record the distance value between the low-intensity point and the built-in midpoint as L1, and the radius of the longest line segment as R1. Use: Tz= (R1-L1) to confirm the characteristic difference Tz, and use the determined L1, R1 and Tz as the regional features of the corresponding coverage area.

7. The digital signal low-power repeater system based on gain adaptive intelligent adjustment according to claim 6, characterized in that: The specific method for the associated feature processing end to confirm the feature to be adjusted is: The determined signal frequency is calibrated as f, and the distance value L1 between the low intensity point and the built-in midpoint is identified from the regional features associated with the corresponding coverage area, using: gain loss = 20log 10 (L1) + 20log 10 (f) + 18, confirm the gain loss associated with the corresponding frequency f and L1, and keep the gain loss unchanged, reduce the signal frequency f by one unit frequency, record the value change of L1 and the change value Bh, and then use: Tz ÷ Bh = Xz to obtain the frequency correction value Xz. Then, based on the determined frequency correction value Xz, confirm the frequency change range [f, f-Xz] associated with the corresponding signal frequency; Keeping the original associated signal frequency f unchanged, gradually increase the gain loss and record the change value Bz of L1 for each unit gain increase. The unit gain is the preset gain. The gain correction value Xq is obtained by using the formula: Tz ÷ Bz = Xq. Based on the determined gain correction value Xq and the gain value ZZ of the corresponding repeater after preliminary debugging, determine the gain change range [ZZ, ZZ + Xq] that needs to be debugged in the corresponding coverage area. The frequency change interval [f, f-Xz] and the gain change interval [ZZ, ZZ+Xq] confirmed for the corresponding coverage area are transmitted to the calibration parameter determination terminal.

8. The digital signal low-power repeater system based on gain adaptive intelligent adjustment according to claim 7, characterized in that: The specific method for selecting the optimal adjustment value at the calibration parameter determination end is: According to the frequency change interval [f, f-Xz] and gain change interval [ZZ, ZZ+Xq] confirmed in the corresponding coverage area, use: P 最佳 = (2f - Xz) ÷ 2 and Z 最佳 =(2ZZ+Xq)÷2Confirm the optimal adjustment frequency value P 最佳 And the optimal adjustment gain value Z 最佳 ; And the confirmed optimal adjustment frequency value P 最佳 And the optimal adjustment gain value Z 最佳 Transmitted to the debugging processing end.

9. The digital signal low-power repeater system based on gain adaptive intelligent adjustment according to claim 8, characterized in that: The debugging processing end adjusts the optimal frequency value P based on the corresponding coverage area 最佳 And the optimal adjustment gain value Z 最佳 The frequency value and gain value associated with the repeater are adjusted to complete the gain adaptive adjustment process of the corresponding repeater.

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