CN113067602B - Method, device, terminal and storage medium for determining calibration parameters - Google Patents
Method, device, terminal and storage medium for determining calibration parameters Download PDFInfo
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- CN113067602B CN113067602B CN202110291928.XA CN202110291928A CN113067602B CN 113067602 B CN113067602 B CN 113067602B CN 202110291928 A CN202110291928 A CN 202110291928A CN 113067602 B CN113067602 B CN 113067602B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B3/00—Line transmission systems
- H04B3/02—Details
- H04B3/46—Monitoring; Testing
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Abstract
The embodiment of the invention discloses a method, a device, a terminal and a storage medium for determining calibration parameters, which are applied to a system comprising a CM, a signal generator and a spectrum analyzer, wherein the signal generator is respectively connected with the CM and the spectrum analyzer; the method comprises the following steps: controlling a signal generator to transmit signals at a plurality of frequency points; determining the power of a signal received by the CM at each frequency point, and setting the power as a first power; determining the power of the signal received by the spectrum analyzer at each frequency point, and setting the power as a second power; determining the difference value of the first power and the second power of the signal at the same frequency point; the difference at all frequency points is summed as the calibration parameter for the CM. The scheme can quickly obtain the calibration parameters of all frequency points, and compared with the prior art, the method saves the steps of configuring a CMTS in multiple layers, re-locking the frequency, synchronously getting on line, acquiring IP (Internet protocol), reading power and the like, and greatly accelerates the calibration speed.
Description
Technical Field
The present invention relates to the field of signal calibration technologies, and in particular, to a method, an apparatus, a terminal, and a storage medium for determining a calibration parameter.
Background
At present, the cable coaxial cable has a high popularity in many parts of the world, for example, the popularity of the coaxial cable in the U.S. family is as high as 70%, the infrastructure of the coaxial cable is complete, and the technology for transmitting multimedia video data by the coaxial cable is mature and stable, so that the cable coaxial cable is suitable for transmitting multimedia video data. Among them, the DOCSIS (The Data Over Cable System Interface Specification) is a Specification of The Cable coaxial, which defines The requirements and behaviors of CMTS (Cable Modem Terminal Systems) and CM (Cable Modem).
The DOCSIS version 3.1 in the DOCSIS is widely applied, wherein the DOCSIS version 3.1 needs to perform downstream power calibration, that is, the signal received by the CM is calibrated to ensure consistency between the actual power received by the CM and the read power. Specifically, the downstream signals in DOCSIS 3.1 are sent by the CMTS and received by the CM. During the CM on-line process, the standard specifies that the power is between ± 15dBmV, and if this range is exceeded, the CM cannot be on-line. If the actual received power is very different from the reported signal received by the CM and exceeds the ± 15dBmV range, the line may not be pulled up. Therefore, it is particularly important to calibrate the downlink signal.
At present, for the calibration of downlink signals, a CMTS configures a frequency point, and a CM registers online. After the on-line, the CM modem analyzes to obtain a Power value Power (MIB), and an actual Power value Power (VSA) in the coaxial cable, which have a difference therebetween, that is, an offset value to be calibrated.
At present, DOCSIS 3.1 needs to calibrate 16 frequency points, so that all frequency points can be calibrated only after going online 16 times. Every time the CMTS is re-online, the frequency point of the CMTS needs to be adjusted, the CM locks the frequency again, the power inside the CM is read, the power detected by the actual frequency spectrograph is obtained, and the whole set of operation needs at least 2 minutes; and because 16 frequency points need to be calibrated, the calibration can be completed in at least half an hour, the time is too long, and the calibration efficiency is low.
Therefore, a new scheme for calibration is urgently needed.
Disclosure of Invention
In view of this, the present invention provides a method, an apparatus, a terminal and a storage medium for determining calibration parameters, which can improve calibration efficiency compared to the prior art.
Specifically, the present invention proposes the following specific examples:
the embodiment of the invention provides a method for determining calibration parameters, which is applied to a system comprising a CM, a signal generator and a spectrum analyzer, wherein the signal generator is respectively connected with the CM and the spectrum analyzer; the method comprises the following steps:
controlling the signal generator to transmit signals at a plurality of frequency points;
determining the power of the signals received by the CM at each frequency point, and setting the power as a first power;
determining the power of the signal received by the spectrum analyzer at each frequency point, and setting the power as a second power;
determining a difference between the first power and the second power of the signal received at the same frequency point;
summing the difference values at all of the frequency points as a calibration parameter for the CM.
In a particular embodiment, the system further comprises: an attenuator and a power divider; the signal generator is connected with the attenuator through a Cable line; the attenuator is connected with the input end of the power divider through a Cable line; the power divider is provided with two output ends, and the two output ends are respectively connected with the CM and the spectrum analyzer through Cable lines; the signal power output by the two output ends is the same.
In a specific embodiment, before controlling the signal generator to transmit signals at a plurality of preset frequency points, the method further includes:
setting signal transmission parameters for the signal generator to enable the signal generator to transmit signals based on a plurality of frequency points in the signal transmission parameters;
and setting signal receiving parameters corresponding to the signal transmitting parameters for the spectrum analyzer so that the spectrum analyzer receives signals by monitoring a plurality of frequency points in the signal receiving parameters.
In a specific embodiment, the signaling parameters further include: a signal modulation mode; the signal receiving parameters further comprise: and a signal demodulation method corresponding to the signal modulation method.
In a specific embodiment, the determining the power of the signal received by the CM at each of the frequency points includes:
locking, by the CM, all frequency points of the signal transmitted by the signal generator;
a demodulator inside the CM determines the power of the signal at all frequency points locked.
In a specific embodiment, the method further comprises the following steps:
calibrating the downlink power of the CM based on the calibration parameter.
The embodiment of the invention also provides a device for determining the calibration parameters, which is applied to a system comprising a CM, a signal generator and a spectrum analyzer, wherein the signal generator is respectively connected with the CM and the spectrum analyzer; the device includes:
the transmitting module is used for controlling the signal generator to transmit signals at a plurality of frequency points;
a first determining module, configured to determine power of the signal received by the CM at each of the frequency points, and set the power to a first power;
a second determining module, configured to determine power of the signal received by the spectrum analyzer at each of the frequency points, and set the power as a second power;
a difference module, configured to determine a difference between the first power and the second power of the signal received at the same frequency point;
and the summarizing module is used for summarizing the difference values under all the frequency points to serve as the calibration parameters of the CM.
In a particular embodiment, the system further comprises: an attenuator and a power divider; the signal generator is connected with the attenuator through a Cable line; the attenuator is connected with the input end of the power divider through a Cable line; the power divider is provided with two output ends, and the two output ends are respectively connected with the CM and the spectrum analyzer through Cable lines; the signal power output by the two output ends is the same.
The embodiment of the present invention further provides a terminal, which includes a processor and a memory, where an application program is stored in the memory, and the application program executes the method for determining the calibration parameter when running on the processor.
The embodiment of the present invention further provides a storage medium, where an application program is stored in the storage medium, and the application program executes the method for determining the calibration parameter when running on the processor.
Compared with the prior art, the embodiment of the invention provides a method, a device, a terminal and a storage medium for determining calibration parameters, which are applied to a system comprising a CM, a signal generator and a spectrum analyzer, wherein the signal generator is respectively connected with the CM and the spectrum analyzer; the method comprises the following steps: controlling the signal generator to transmit signals at a plurality of frequency points; determining the power of the signal received by the CM at each frequency point, and setting the power as a first power; determining the power of the signal received by the spectrum analyzer at each frequency point, and setting the power as a second power; determining a difference between the first power and the second power of the signal received at the same frequency point; summing the difference values at all of the frequency points as calibration parameters for the CM. The scheme can quickly obtain the calibration parameters of all frequency points, and compared with the prior art, the method saves the steps of configuring a CMTS in multiple layers, re-locking the frequency, synchronously getting on line, acquiring IP (Internet protocol), reading power and the like, and greatly accelerates the calibration speed.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the drawings required to be used in the embodiments will be briefly described below, and it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope of the present invention. Like components are numbered similarly in the various figures.
Fig. 1 is a schematic flow chart illustrating a method for determining calibration parameters according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a system to which a method for determining calibration parameters according to an embodiment of the present invention is applied;
FIG. 3 is a schematic diagram of an interface for setting a signal generator in a method for determining calibration parameters according to an embodiment of the present invention;
FIG. 4 is a schematic interface diagram illustrating a CM lock frequency point in a method for determining calibration parameters according to an embodiment of the present invention;
fig. 5 is an interface diagram illustrating the power of a CM read signal in a method for determining a calibration parameter according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram illustrating an apparatus for determining calibration parameters according to an embodiment of the present invention.
Illustration of the drawings:
201-a sending module; 202-a first determination module; 203-a second determination module; 204-difference module; 205-a summarization module;
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
Hereinafter, the terms "including", "having", and their derivatives, which may be used in various embodiments of the present invention, are only intended to indicate specific features, numbers, steps, operations, elements, components, or combinations of the foregoing, and should not be construed as first excluding the existence of, or adding to, one or more other features, numbers, steps, operations, elements, components, or combinations of the foregoing.
Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which various embodiments of the present invention belong. The terms (such as those defined in commonly used dictionaries) should be interpreted as having a meaning that is consistent with their contextual meaning in the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein in various embodiments of the present invention.
Example 1
step S101, controlling a signal generator to send signals at a plurality of frequency points;
in a specific application scenario, a CM (Cable Modem) and a CMTS (Cable Modem Terminal Systems) form a Cable transmission system; as shown in fig. 2, the scheme in the scheme is applied to a system comprising a CM, a signal generator and a spectrum analyzer, wherein the signal generator is respectively connected with the CM and the spectrum analyzer; in one particular embodiment, for example, the signal generator transmits 16 discrete downstream signals.
The signal generated by the signal generator is transmitted to the CM and the spectrum analyzer, both of which receive the signal, and perform the subsequent power analysis, i.e., perform steps S102 and S103.
Step S102, determining the power of signals received by the CM at each frequency point, and setting the power as a first power;
specifically, for example, the signal generator transmits 3 signals at frequency point 1, frequency point 2, and frequency point 3, in which case the CM receives the 3 signals at frequency point 1, frequency point 2, and frequency point 3, and determines the power of the 3 signals, respectively, and sets the power to 3 first powers (for example, named Pmib1, pmib2, and Pmib3, respectively).
Step S103, determining the power of the signal received by the spectrum analyzer at each frequency point, and setting the power as a second power;
still taking the above example as an example, the spectrum analyzer also receives the 3 signals at frequency point 1, frequency point 2, and frequency point 3, and determines the power of the 3 signals respectively, and sets the power to 3 second powers (named Pvsa1, pvsa2, and Pvsa3, for example).
Specifically, step S102 and step S103 are not consecutive.
Step S104, determining a difference value between a first power and a second power of the received signal at the same frequency point;
also taking the above as an example, for example, the first power of the signal at frequency point 1 is Pmib1; the second power is Pvsa1, the difference (for example, named offset 1) can be Pvsa1-Pmib1, and for other frequency points, the difference offset2 for frequency point 2 is Pvsa2-Pmib2, and the difference offset3 for frequency point 3 is Pvsa3-Pmib3.
And step S105, summarizing the difference values at all frequency points to serve as the calibration parameters of the CM.
With 3 frequency point powers, offset1, offset2, and offset3 are summed as the calibration parameters for the CM.
Further, as shown in fig. 2, the system to which the present solution is applied further includes: an attenuator and a power divider; wherein, the signal generator is connected with the attenuator through a Cable line; the attenuator is connected with the input end of the power divider through a Cable line; the power divider is provided with two output ends, and the two output ends are respectively connected with the CM and the spectrum analyzer through Cable lines; the signal power output by the two output ends is the same.
Specifically, the Cable is used for connecting the signal generator, the attenuator, the power divider, the CM and the spectrum analyzer, so that the environment of the system is consistent with the environment between the CM and the CMTS, and the calibration accuracy is facilitated. The attenuator is used for guaranteeing the signal quality of signal generator to it is more accurate that the difference is confirmed in the follow-up, in addition, based on the signal of power divider with signal generator is divided into two, and two signal power that divide are the same, transmit CM and spectrum analyzer respectively.
In a specific embodiment, before the control signal generator sends signals at a plurality of preset frequency points, the method further comprises:
setting signal transmission parameters for the signal generator to enable the signal generator to transmit signals based on a plurality of frequency points in the signal transmission parameters;
specifically, as shown in fig. 3, a downlink signal of the signal generator may be configured, and specifically, a modulation method, a frequency, and a power may be configured. Specifically, for example, 16 frequency points, 111MHz, 147MHz, 999MHz, can be arranged.
And setting signal receiving parameters corresponding to the signal transmitting parameters for the spectrum analyzer so that the spectrum analyzer receives signals by monitoring a plurality of frequency points in the signal receiving parameters.
Corresponding to the configuration of the signal generator, signal receiving parameters are also set for the spectrum analyzer, so that the spectrum analyzer can conveniently receive signals of 16 frequency points of 111MHz, 147MHz and 999MHz. And reading the power Pvsa of the signal corresponding to the frequency points one by one according to the 16 frequency points.
In a specific embodiment, the signaling parameters further include: a signal modulation mode; the signal receiving parameters further comprise: a signal demodulation system corresponding to the signal modulation system.
In a specific embodiment, "determining the power of the signal received by the CM at each frequency point" includes:
locking all frequency points of the signal transmitted by the signal generator by the CM;
a demodulator inside the CM determines the power of the signal at all frequency points locked.
Specifically, as shown in fig. 4, the CM may lock 16 frequency points inside the signal generator at a time by command, without going online. As shown in fig. 5, the downlink signal power Pmib analyzed by the internal demodulator is checked by a command.
In one specific implementation, after determining the calibration parameters, the method further comprises:
and calibrating the downlink power of the CM based on the calibration parameters.
According to the scheme, a signal generator sends a plurality of discontinuous downlink signals, for example, 16 downlink signals, and a CM captures the 16 signals, so that the power Ppib of the 16 signals is obtained through analysis, and compared with the power Pvsa obtained through analysis of the 16 signals by a spectrum analyzer, 16 offset values are obtained simultaneously. Compared with the prior art, the scheme can obtain the offset values of all frequency points needing to be calibrated at one time, and saves the steps of configuring a CMTS (Cable termination System), re-locking frequency, synchronously getting online, acquiring IP (Internet protocol), reading power and the like for many times, thereby greatly accelerating the calibration speed.
Example 2
The embodiment 2 of the invention also discloses a device for determining the calibration parameters, which is applied to a system comprising a CM, a signal generator and a spectrum analyzer, wherein the signal generator is respectively connected with the CM and the spectrum analyzer; as shown in fig. 6, the apparatus includes:
a transmitting module 201, configured to control a signal generator to transmit signals at multiple frequency points;
a first determining module 202, configured to determine power of a signal received by the CM at each frequency point, and set the power to a first power;
a second determining module 203, configured to determine the power of the signal received by the spectrum analyzer at each frequency point, and set the power as a second power;
a difference module 204, configured to determine a difference between a first power and a second power of a signal at the same frequency point;
and a summarizing module 205, configured to summarize the difference values at all frequency points as the calibration parameter of the CM.
In a particular embodiment, the system further comprises: an attenuator and a power divider; wherein, the signal generator is connected with the attenuator through a Cable line; the attenuator is connected with the input end of the power divider through a Cable line; the power divider is provided with two output ends, and the two output ends are respectively connected with the CM and the spectrum analyzer through Cable lines; the signal power output by the two output ends is the same.
In a specific embodiment, the method further comprises the following steps:
the configuration module is used for setting signal transmission parameters for the signal generator before the signal generator is controlled to transmit signals at a plurality of preset frequency points, so that the signal generator transmits the signals based on the frequency points in the signal transmission parameters;
and setting signal receiving parameters corresponding to the signal transmitting parameters for the spectrum analyzer so that the spectrum analyzer receives signals by monitoring a plurality of frequency points in the signal receiving parameters.
In a specific embodiment, the signaling parameters further include: a signal modulation mode; the signal receiving parameters further comprise: a signal demodulation system corresponding to the signal modulation system.
In a specific embodiment, the first determining module 202 "determining the power of the signal received by the CM at each frequency point" includes:
locking all frequency points of the signal transmitted by the signal generator by the CM;
a demodulator inside the CM determines the power of the signal at all frequency points locked.
In a specific embodiment, the method further comprises the following steps:
and the calibration module is used for calibrating the downlink power of the CM based on the calibration parameters.
Example 3
The embodiment 3 of the present invention further discloses a terminal, which includes a processor and a memory, where the memory stores an application program, and the application program executes the method for determining the calibration parameter in any one of the embodiments 1 when running on the processor. Specifically, embodiment 3 of the present invention further discloses other related features, and for the specific related features, reference is made to the description in embodiment 1, which is not repeated herein.
Example 4
The embodiment of the invention provides a method, a device, a terminal and a storage medium for determining calibration parameters, which are applied to a system comprising a CM (modem), a signal generator and a spectrum analyzer, wherein the signal generator is respectively connected with the CM and the spectrum analyzer; the method comprises the following steps: controlling a signal generator to transmit signals at a plurality of frequency points; determining the power of a signal received by the CM at each frequency point, and setting the power as a first power; determining the power of the signal received by the spectrum analyzer at each frequency point, and setting the power as a second power; determining the difference value of the first power and the second power of the signal at the same frequency point; the difference at all frequency points is summarized as the calibration parameter for CM. The scheme can quickly obtain the calibration parameters of all frequency points, and compared with the prior art, the method saves the steps of configuring a CMTS in multiple layers, re-locking the frequency, synchronously getting on line, acquiring IP (Internet protocol), reading power and the like, and greatly accelerates the calibration speed.
In the embodiments provided in the present application, it should be understood that the disclosed apparatus and method can be implemented in other ways. The apparatus embodiments described above are merely illustrative and, for example, the flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of apparatus, methods and computer program products according to various embodiments of the present invention. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that, in alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
In addition, each functional module or unit in each embodiment of the present invention may be integrated together to form an independent part, or each module may exist separately, or two or more modules may be integrated to form an independent part.
The functions, if implemented in the form of software functional modules and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention or a part thereof which contributes to the prior art in essence can be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for causing a computer device (which may be a smart phone, a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention.
Claims (8)
1. A method of determining calibration parameters for use in a system comprising a CM, a signal generator and a spectrum analyzer, said signal generator being connected to said CM and said spectrum analyzer respectively; the method comprises the following steps:
controlling the signal generator to transmit signals at a plurality of frequency points;
determining the power of the signal received by the CM at each frequency point, and setting the power as a first power;
determining the power of the signal received by the spectrum analyzer at each frequency point, and setting the power as a second power;
determining a difference between the first power and the second power of the signal received at the same frequency point;
summarizing the difference values at all the frequency points as calibration parameters of the CM;
calibrating downlink power of the CM based on the calibration parameter;
wherein, before controlling the signal generator to transmit signals at a plurality of preset frequency points, the method further comprises: setting signal transmission parameters for the signal generator, wherein the signal transmission parameters comprise a plurality of frequency points; and setting signal receiving parameters corresponding to the signal transmitting parameters for the spectrum analyzer so that the spectrum analyzer receives signals by monitoring a plurality of frequency points in the signal receiving parameters.
2. The method of claim 1, wherein the system further comprises: an attenuator and a power divider; the signal generator is connected with the attenuator through a Cable line; the attenuator is connected with the input end of the power divider through a Cable line; the power divider is provided with two output ends, and the two output ends are respectively connected with the CM and the spectrum analyzer through Cable lines; the signal power output by the two output ends is the same.
3. The method of claim 1, wherein the signaling parameters further comprise: a signal modulation mode; the signal receiving parameters further comprise: and a signal demodulation method corresponding to the signal modulation method.
4. The method of claim 1, wherein said determining the power of the signal received by the CM at each of the frequency bins comprises:
locking, by the CM, all frequency points of the signal transmitted by the signal generator;
a demodulator inside the CM determines the power of the signals of all frequency bins locked.
5. An apparatus for determining calibration parameters, for use in a system comprising a CM, a signal generator and a spectrum analyzer, said signal generator being connected to said CM and said spectrum analyzer, respectively; the device comprises:
the transmitting module is used for controlling the signal generator to transmit signals at a plurality of frequency points;
a first determining module, configured to determine power of the signal received by the CM at each of the frequency points, and set the power to a first power;
a second determining module, configured to determine power of the signal received by the spectrum analyzer at each of the frequency points, and set the power as a second power;
a difference module, configured to determine a difference between the first power and the second power of the signal received at the same frequency point;
a summarizing module, configured to summarize the difference values at all the frequency points as calibration parameters of the CM;
a calibration module, configured to calibrate downlink power of the CM based on the calibration parameter;
wherein, before the sending module controls the signal generator to send signals at a plurality of preset frequency points, the method further comprises: setting signal transmission parameters for the signal generator, wherein the signal transmission parameters comprise a plurality of frequency points; and setting signal receiving parameters corresponding to the signal transmitting parameters for the spectrum analyzer so that the spectrum analyzer receives signals by monitoring a plurality of frequency points in the signal receiving parameters.
6. The apparatus of claim 5, wherein the system further comprises: an attenuator and a power divider; the signal generator is connected with the attenuator through a Cable line; the attenuator is connected with the input end of the power divider through a Cable line; the power divider is provided with two output ends, and the two output ends are respectively connected with the CM and the spectrum analyzer through Cable lines; the signal power output by the two output ends is the same.
7. A terminal, characterized in that it comprises a processor and a memory, in which an application program is stored, which application program, when running on the processor, performs the method of determining calibration parameters according to any one of claims 1 to 4.
8. A storage medium, characterized in that an application program is stored in the storage medium, which application program, when running on a processor, performs the method of determining calibration parameters according to any one of claims 1-4.
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| AU2001231176A1 (en) * | 2000-01-26 | 2001-08-07 | Vyyo, Ltd. | Offset carrier frequency correction in a two-way broadband wireless access system |
| US7292625B2 (en) * | 2002-01-17 | 2007-11-06 | Askey Computer Corp. | Downstream power calibration method on cable modem |
| US20100007355A1 (en) * | 2008-07-10 | 2010-01-14 | Litepoint Corporation | Method for testing radio frequency (rf) receiver to provide power correction data |
| US11133840B2 (en) * | 2017-06-30 | 2021-09-28 | Maxlinear, Inc. | Cable modem transceiver, cable modem, cable modem communication system, processor for a cable modem transceiver, method for calibrating a cable modem transceiver, and computer program |
| CN108023645A (en) * | 2017-12-19 | 2018-05-11 | 深圳市共进电子股份有限公司 | A kind of test method and device of Cable Modem descending powers |
| TWI645693B (en) * | 2018-03-01 | 2018-12-21 | 和碩聯合科技股份有限公司 | Testing system |
| CN109687916A (en) * | 2018-11-23 | 2019-04-26 | 上海健康医学院 | A kind of radio frequency power calibration method and prover |
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