CN116582148B - Signal compensation method, remote radio unit, electronic device and storage medium - Google Patents
Signal compensation method, remote radio unit, electronic device and storage medium Download PDFInfo
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- H—ELECTRICITY
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- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
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- H—ELECTRICITY
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- H03F—AMPLIFIERS
- H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
- H03F1/30—Modifications of amplifiers to reduce influence of variations of temperature or supply voltage or other physical parameters
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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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- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
The disclosure provides a signal compensation method, a remote radio frequency unit, electronic equipment and a storage medium, and relates to the technical field of communication. The method comprises the following steps: collecting working temperatures of a band-pass filter and a power amplifier; when the working temperature of the band-pass filter is out of the first temperature range, determining the current insertion loss characteristic of the band-pass filter; determining a current gain characteristic of the power amplifier when the operating temperature of the power amplifier is outside of the second temperature range; determining an amplitude frequency characteristic compensation value and a phase frequency characteristic compensation value according to the current insertion loss characteristic, the current gain characteristic, the preset amplitude frequency characteristic and the preset phase frequency characteristic; and compensating the output signal of the band-pass filter according to the amplitude-frequency characteristic compensation value and the phase-frequency characteristic compensation value. The method can reduce the influence of temperature drift on the performance of the remote radio frequency unit and improve the reliability of the remote radio frequency unit.
Description
Technical Field
The disclosure relates to the field of communication technologies, and in particular, to a signal compensation method, a remote radio unit, an electronic device, and a storage medium.
Background
In the field of communication technology, a remote radio frequency unit (RRU, remote Radio Unit) communicates with a baseband processing unit (BBU, building Base band Unit) through a baseband radio frequency interface to complete conversion between baseband signals and radio frequency signals.
The remote radio unit comprises a band-pass filter and a power amplifier, and the working temperatures of the band-pass filter and the power amplifier can be changed due to the change of seasons, weather, positions and time, so that the insertion loss characteristics and gain characteristics of the band-pass filter and the power amplifier in a target frequency band (such as an 800M spread spectrum frequency band) can be influenced by the working temperatures of the band-pass filter and the power amplifier, and the performance and reliability of the remote radio unit are influenced.
It should be noted that the information disclosed in the above background section is only for enhancing understanding of the background of the present disclosure and thus may include information that does not constitute prior art known to those of ordinary skill in the art.
Disclosure of Invention
The present disclosure is directed to a signal compensation method, a remote radio unit, an electronic device, and a storage medium, where the method can adaptively compensate for an insertion loss characteristic of a band-pass filter and a gain characteristic of a power amplifier according to an operating temperature of the band-pass filter and the power amplifier, thereby reducing an influence of a temperature drift on performance of the remote radio unit and improving reliability of the remote radio unit.
Other features and advantages of the present disclosure will be apparent from the following detailed description, or may be learned in part by the practice of the disclosure.
The embodiment of the disclosure provides a signal compensation method which is applied to a remote radio frequency unit, wherein the remote radio frequency unit comprises a band-pass filter and a power amplifier; the method comprises the following steps: collecting the working temperature of the band-pass filter and the working temperature of the power amplifier; when the working temperature of the band-pass filter is out of a first temperature range, determining the current insertion loss characteristic of the band-pass filter; determining a current gain characteristic of the power amplifier when an operating temperature of the power amplifier is outside a second temperature range; determining a current amplitude-frequency characteristic and a current phase-frequency characteristic according to the current insertion loss characteristic and the current gain characteristic; and compensating the output signal of the band-pass filter according to the current insertion loss characteristic, the current gain characteristic, the preset amplitude-frequency characteristic and the phase-frequency characteristic compensation value to obtain a compensation result, and taking the compensation result as an input signal of the power amplifier.
In some exemplary embodiments of the present disclosure, determining a current insertion loss characteristic of the bandpass filter includes: collecting an input signal of the band-pass filter and an output signal of the band-pass filter; determining the current insertion loss characteristic of the band-pass filter according to the input signal of the band-pass filter and the output signal of the band-pass filter; determining a current gain characteristic of the power amplifier comprises: collecting an input signal of the power amplifier and an output signal of the power amplifier; determining a current gain characteristic of the power amplifier according to an input signal of the power amplifier and an output signal of the power amplifier.
In some exemplary embodiments of the present disclosure, determining a current insertion loss characteristic of the bandpass filter includes: determining a preset insertion loss characteristic corresponding to the working temperature of the band-pass filter, and taking the preset insertion loss characteristic as the current insertion loss characteristic of the band-pass filter; determining a current gain characteristic of the power amplifier comprises: and determining a preset gain characteristic corresponding to the working temperature of the power amplifier, and taking the preset gain characteristic as the current gain characteristic of the power amplifier.
In some exemplary embodiments of the present disclosure, the current insertion loss characteristic includes a current amplitude-frequency characteristic of the band-pass filter and a current phase-frequency characteristic of the band-pass filter, and the current gain characteristic includes a current amplitude-frequency characteristic of the power amplifier and a current phase-frequency characteristic of the power amplifier; wherein determining an amplitude-frequency characteristic compensation value and a phase-frequency characteristic compensation value according to the current insertion loss characteristic, the current gain characteristic, a preset amplitude-frequency characteristic and a preset phase-frequency characteristic comprises: obtaining the amplitude frequency characteristic compensation value according to the current amplitude frequency characteristic of the band-pass filter, the current amplitude frequency characteristic of the power amplifier and the preset amplitude frequency characteristic; and obtaining the phase frequency characteristic compensation value according to the current phase frequency characteristic of the band-pass filter, the current phase frequency characteristic of the power amplifier and the preset phase frequency characteristic.
In some exemplary embodiments of the present disclosure, collecting the operating temperature of the band pass filter and the operating temperature of the power amplifier includes: when the distance between the band-pass filter and the power amplifier is larger than a preset distance, acquiring the working temperature of the band-pass filter by using a first temperature sensor, and acquiring the working temperature of the power amplifier by using a second temperature sensor, wherein the first temperature sensor and the second temperature sensor are different temperature sensors; and when the distance between the band-pass filter and the power amplifier is smaller than or equal to a preset distance, acquiring the working temperature of the band-pass filter and the working temperature of the power amplifier by using a target temperature sensor.
In some exemplary embodiments of the present disclosure, the operating temperature of the band pass filter is outside of a first temperature range, comprising: the working temperature of the band-pass filter is higher than a first temperature threshold or lower than a second temperature threshold; the operating temperature of the power amplifier is outside a second temperature range, comprising: the operating temperature of the band-pass filter is higher than the third temperature threshold or lower than the fourth temperature threshold.
The disclosed embodiment provides a remote radio unit, comprising: the device comprises a band-pass filter, a power amplifier, a temperature sensor, a control module and a compensator; the temperature sensor is used for collecting the working temperature of the band-pass filter and the working temperature of the power amplifier; the control module is used for determining the current insertion loss characteristic of the band-pass filter when the working temperature of the band-pass filter is out of a first temperature range; determining a current gain characteristic of the power amplifier when an operating temperature of the power amplifier is outside a second temperature range; determining an amplitude frequency characteristic compensation value and a phase frequency characteristic compensation value according to the current insertion loss characteristic, the current gain characteristic, a preset amplitude frequency characteristic and a preset phase frequency characteristic; the compensator is used for compensating the output signal of the band-pass filter according to the amplitude-frequency characteristic compensation value and the phase-frequency characteristic compensation value to obtain a compensation result, and the compensation result is used as an input signal of the power amplifier and is input into the power amplifier.
In some exemplary embodiments of the present disclosure, the control module includes: an insertion loss detector, a gain detector, and a controller; the insertion loss detector is used for collecting an input signal of the band-pass filter and an output signal of the band-pass filter when the working temperature of the band-pass filter is out of a first temperature range; determining the current insertion loss characteristic of the band-pass filter according to the input signal of the band-pass filter and the output signal of the band-pass filter; the gain detector is used for collecting an input signal of the power amplifier and an output signal of the power amplifier when the working temperature of the power amplifier is out of a second temperature range; determining a current gain characteristic of the power amplifier according to an input signal of the power amplifier and an output signal of the power amplifier; the controller is used for determining an amplitude frequency characteristic compensation value and a phase frequency characteristic compensation value according to the current insertion loss characteristic, the current gain characteristic, the preset amplitude frequency characteristic and the preset phase frequency characteristic.
An embodiment of the present disclosure provides an electronic device, including: at least one processor; and a storage terminal device for storing at least one program which, when executed by the at least one processor, causes the at least one processor to implement any one of the signal compensation methods described above.
The disclosed embodiments provide a computer readable storage medium having a computer program stored thereon, characterized in that the computer program, when executed by a processor, implements any of the above-described signal compensation methods.
The signal compensation method provided by the embodiment of the disclosure collects the working temperature of the band-pass filter and the working temperature of the power amplifier; when the working temperature of the band-pass filter is out of the first temperature range, determining the current insertion loss characteristic of the band-pass filter; determining a current gain characteristic of the power amplifier when the operating temperature of the power amplifier is outside of the second temperature range; determining an amplitude frequency characteristic compensation value and a phase frequency characteristic compensation value according to the current insertion loss characteristic, the current gain characteristic, the preset amplitude frequency characteristic and the preset phase frequency characteristic; compensating the output signal of the band-pass filter according to the amplitude-frequency characteristic compensation value and the phase-frequency characteristic compensation value, and taking the compensation result as the input signal of the power amplifier; the method can adaptively compensate the insertion loss characteristic of the band-pass filter and the gain characteristic of the power amplifier according to the working temperature of the band-pass filter and the power amplifier, improves the instantaneous amplitude-frequency characteristic and the flatness of the instantaneous gain characteristic of the far-end radio frequency unit, reduces the influence of temperature drift on the performance of the far-end radio frequency unit, and improves the reliability of the far-end radio frequency unit.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the disclosure and together with the description, serve to explain the principles of the disclosure. It will be apparent to those of ordinary skill in the art that the drawings in the following description are merely examples of the disclosure and that other drawings may be derived from them without undue effort.
Fig. 1 is a flow chart illustrating a signal compensation method according to an exemplary embodiment.
Fig. 2 is a schematic diagram of a remote radio unit according to an example embodiment.
Fig. 3 is a schematic diagram of another remote radio unit according to an example embodiment.
Fig. 4 is a schematic diagram of an electronic device according to an exemplary embodiment.
Detailed Description
Example embodiments will now be described more fully with reference to the accompanying drawings. However, the exemplary embodiments can be embodied in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the example embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar parts, and thus a repetitive description thereof will be omitted.
The described features, structures, or characteristics of the disclosure may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to give a thorough understanding of embodiments of the present disclosure. However, those skilled in the art will recognize that the aspects of the present disclosure may be practiced with one or more of the specific details, or with other methods, components, devices, steps, etc. In other instances, well-known methods, devices, implementations, or operations are not shown or described in detail to avoid obscuring aspects of the disclosure.
The drawings are merely schematic illustrations of the present disclosure, in which like reference numerals denote like or similar parts, and thus a repetitive description thereof will be omitted. Some of the block diagrams shown in the figures do not necessarily correspond to physically or logically separate entities. These functional entities may be implemented in software or in at least one hardware module or integrated circuit or in different networks and/or processor devices and/or microcontroller devices.
The flow diagrams depicted in the figures are exemplary only, and not necessarily all of the elements or steps are included or performed in the order described. For example, some steps may be decomposed, and some steps may be combined or partially combined, so that the order of actual execution may be changed according to actual situations.
Furthermore, in the description of the present disclosure, the terms "a," "an," "the," "said," and "at least one" are used to indicate the presence of at least one element or component; the terms "comprising," "including," and "having" are intended to be inclusive and mean that there may be additional elements or components other than the listed elements or components; the terms "first," "second," and "third," etc. are used merely as labels, and do not limit the number of their objects.
The following describes example embodiments of the present disclosure in detail with reference to the accompanying drawings.
Fig. 1 is a flowchart illustrating a signal compensation method according to an exemplary embodiment, and the signal compensation method provided by the embodiment of the disclosure may be performed by a remote radio unit, but the disclosure is not limited thereto.
The remote radio frequency units (RRU, remote Radio Unit) can communicate with the baseband processing units (BBU, building Base band Unit) through the baseband radio frequency interface, so as to complete conversion between baseband signals and radio frequency signals.
Fig. 2 is a schematic diagram of a remote radio unit according to an example embodiment.
Referring to fig. 2, the remote radio frequency Unit may include an Interface Unit (IU) 201, a digital intermediate frequency (DIF, digital Intermediate Frequency) 202, a TRX (Transceiver) transceiver 203, a Band Pass Filter (BPF) 2041, a Band Pass Filter 2042, a low noise Amplifier (LNA, low Noise Amplifier) 205, and a Power Amplifier (PA) 206, which constitute a downlink signal processing link and an uplink signal processing link.
The remote radio units provided by embodiments of the present disclosure may further include a temperature sensor 2071 and/or a temperature sensor 2072, a control module 208 and an adaptive compensator 209; wherein, the temperature sensor 2071 is used for collecting the working temperature of the band-pass filter 2042, the temperature sensor 2072 is used for collecting the working temperature of the power amplifier 206, and the control module is used for determining an amplitude-frequency characteristic compensation value and a phase-frequency characteristic compensation value according to the collected working temperature of the band-pass filter 2042 and the collected working temperature of the power amplifier 206; the adaptive compensator 209 compensates the output signal of the band-pass filter 2042 according to the amplitude-frequency characteristic compensation value and the phase-frequency characteristic compensation value, and inputs the compensation result to the power amplifier 206.
As shown in fig. 1, the signal compensation method provided by the embodiment of the present disclosure may include the following steps.
In step S102, the operating temperature of the band pass filter and the operating temperature of the power amplifier are acquired.
In the disclosed embodiments, the band pass filter and the power amplifier refer to a band pass filter and a power amplifier on a transmit link of a remote radio unit.
In an embodiment of the present disclosure, the operating temperature of the band-pass filter may be an ambient temperature around the band-pass filter, which may be measured by a temperature sensor placed near the band-pass filter; the operating temperature of the power amplifier may be an ambient temperature around the power amplifier; the operating temperature of the power amplifier may be measured by a temperature sensor placed in the vicinity of the power amplifier.
Since the change of the operating temperature affects the insertion loss characteristic and the gain characteristic of the band-pass filter and the power amplifier in the target frequency band (for example, 800M spread spectrum frequency band), the operating temperature of the band-pass filter and the operating temperature of the power amplifier need to be collected, and the insertion loss characteristic and the gain characteristic of the band-pass filter and the operating temperature of the power amplifier are adaptively compensated according to the operating temperature of the band-pass filter and the operating temperature of the power amplifier.
In an exemplary embodiment, collecting the operating temperature of the band pass filter and the operating temperature of the power amplifier includes: when the distance between the band-pass filter and the power amplifier is larger than a preset distance, acquiring the working temperature of the band-pass filter by using a first temperature sensor, and acquiring the working temperature of the power amplifier by using a second temperature sensor, wherein the first temperature sensor and the second temperature sensor are different temperature sensors; and when the distance between the band-pass filter and the power amplifier is smaller than or equal to the preset distance, acquiring the working temperature of the band-pass filter and the working temperature of the power amplifier by using the target temperature sensor.
In the embodiments of the present disclosure, it may be determined whether to use one temperature sensor or two temperature sensors to measure the operating temperatures of the band pass filter and the power amplifier according to the physical distances of the band pass filter and the power amplifier.
When the distance between the band-pass filter and the power amplifier is far, the working temperatures of the band-pass filter and the power amplifier are different, and two temperature sensors can be respectively placed near the band-pass filter and the power amplifier, and the working temperatures of the two devices are respectively measured through heat radiation emitted outwards by the two devices; when the band-pass filter and the power amplifier are close to each other, the operating temperatures of the band-pass filter and the power amplifier are almost the same, and a temperature sensor may be disposed in the middle region of the band-pass filter and the power amplifier, and the operating temperatures of the band-pass filter and the power amplifier may be measured by the temperature sensor.
In step S104, when the operating temperature of the band-pass filter is out of the first temperature range, the current insertion loss characteristic of the band-pass filter is determined.
Referring to fig. 2, the temperature sensor 2071 may input the collected operating temperature of the bandpass filter 2042 to the control module 208, and the control module 208 determines the current insertion loss characteristic of the bandpass filter 2042 when the operating temperature of the bandpass filter 2042 is outside of the first temperature range.
In an exemplary embodiment, the operating temperature of the band pass filter is outside of the first temperature range, comprising: the operating temperature of the band-pass filter is higher than a first temperature threshold or lower than a second temperature threshold, wherein the first temperature threshold is greater than the second temperature threshold.
Specifically, the operating temperature of the band-pass filter outside the first temperature range may be: the working temperature of the band-pass filter exceeds or is lower than a certain preset temperature threshold (the band-pass filter can be divided into a plurality of temperature thresholds according to the insertion loss-temperature characteristic of the theoretical band-pass filter, the disclosure is not limited to the above), and the value of the temperature threshold can be set according to practical situations.
In the embodiment of the disclosure, an insertion loss detector may be provided, where the insertion loss detector determines a current insertion loss characteristic of the band-pass filter when an operating temperature of the band-pass filter is outside a first temperature range; the mapping table of the temperature and the insertion loss characteristic can be stored in the control module in advance, and the current insertion loss characteristic of the band-pass filter can be determined according to the mapping table.
The specific procedure by which the insertion loss detector determines the current insertion loss characteristics of the bandpass filter is described below.
In an exemplary embodiment, determining the current insertion loss characteristics of the bandpass filter includes: collecting an input signal of a band-pass filter and an output signal of the band-pass filter; the current insertion loss characteristic of the band-pass filter is determined according to the input signal of the band-pass filter and the output signal of the band-pass filter.
Fig. 3 is a schematic diagram of another remote radio unit according to an example embodiment.
In the embodiment of the disclosure, the control module 208 in the remote rf unit may further include a insertion loss detector 2081, a gain detector 2082, and a controller 2083, where the input signal 1 of the insertion loss detector 2081 is connected to the input terminal of the band-pass filter 2042, the input signal 2 of the insertion loss detector 2081 is connected to the output terminal of the band-pass filter 2042, and the output terminal of the insertion loss detector 2081 is connected to the input terminal of the controller 2083; the input signal 1 of the gain detector 2082 is connected to the input of the power amplifier 206, the input signal 2 of the gain detector 2082 is connected to the output of the power amplifier 206, and the output of the gain detector 2082 is connected to the other input of the controller 2083.
In the embodiment of the disclosure, when the operating temperature of the band-pass filter is outside the first temperature range, the insertion loss detector 2081 may collect the input signal of the band-pass filter 2042 and the output signal of the band-pass filter 2042, determine the current insertion loss characteristic of the band-pass filter 2042 in the target frequency band (for example, 800M spread spectrum frequency band) according to the input signal of the band-pass filter 2042 and the output signal of the band-pass filter 2042, and input the current insertion loss characteristic of the band-pass filter 2042 in the target frequency band to the controller 2083.
Specifically, the transient insertion loss characteristics of the band-pass filter include transient amplitude-frequency characteristics and transient phase-frequency characteristics of the band-pass filter; the insertion loss detector 2081 performs FFT (Fast Fourier Transformation, fast fourier transform) calculation on the input signal 1 (i.e., the input signal of the band-pass filter) to obtain a frequency spectrum of the input signal 1 in the frequency domain, and calculates a power spectral density psd_f1 of the input signal 1; the insertion loss detector 2081 performs FFT fourier transform on the output signal 2 (i.e., the output signal of the band-pass filter) to obtain a frequency spectrum of the output signal 2 in the frequency domain, and calculates the power spectral density psd_f2 of the output signal 2; comparing the two power spectral densities to obtain the instantaneous amplitude-frequency characteristic of the band-pass filter, wherein the instantaneous amplitude-frequency characteristic is the ratio of the two power spectral densities, namely the instantaneous amplitude-frequency characteristic PSDF_F of the band-pass filter can be obtained by the following formula: psdf_f=psd_f2/psd_f1.
The instantaneous phase frequency characteristic phasef_f of the band-pass filter can be obtained by the following formula:
PHASEF_F= atan（（Im（PSD_F2）- Im（PSD_F1））/（Re（PSD_F2）- Re（PSD_F1）））。
where atan represents an arctangent function, re () represents a real part, and Im () represents an imaginary part.
In the embodiment of the disclosure, the insertion loss detector is used for detecting the current insertion loss characteristic of the band-pass filter, so that more accurate instantaneous insertion loss characteristic can be obtained.
A specific procedure for determining the current insertion loss characteristic of the band-pass filter according to the mapping table will be described.
In an exemplary embodiment, determining the current insertion loss characteristics of the bandpass filter includes: and determining a preset insertion loss characteristic corresponding to the working temperature of the band-pass filter, and taking the preset insertion loss characteristic as the current insertion loss characteristic of the band-pass filter.
In this disclosure embodiment, referring to fig. 2, a mapping table of temperature and insertion loss characteristics may be pre-stored in the control module 208, that is, a theoretical bandpass filter insertion loss-temperature characteristic value is pre-stored in the controller, the temperature sensor 2071 is directly connected with the control module 208, and the control module 208 determines, according to the mapping table and the currently collected working temperature, a preset insertion loss characteristic corresponding to the working temperature, and uses the preset insertion loss characteristic as the current insertion loss characteristic of the bandpass filter 2042.
In the embodiment of the disclosure, the mapping table of the temperature and the insertion loss characteristic is prestored in the control module, that is, the current insertion loss characteristic is not required to be detected by the insertion loss detector, so that the volume of the remote radio frequency unit can be reduced, and the cost is saved.
In step S106, a current gain characteristic of the power amplifier is determined when the operating temperature of the power amplifier is outside the second temperature range.
Referring to fig. 2, the temperature sensor 2072 may input the collected operating temperature of the power amplifier 206 to the control module 208, and the control module 208 determines a current gain characteristic of the power amplifier 206 when the operating temperature of the power amplifier 206 is outside of the second temperature range.
In an exemplary embodiment, the operating temperature of the power amplifier is outside of the second temperature range, comprising: the operating temperature of the band-pass filter is higher than a third temperature threshold or lower than a fourth temperature threshold, wherein the third temperature threshold is greater than the fourth temperature threshold.
Specifically, the operating temperature of the power amplifier outside the second temperature range may be: the operating temperature of the power amplifier exceeds or falls below a preset certain temperature threshold (a plurality of temperature thresholds are set according to the gain-temperature characteristics of the theoretical power amplifier, which is not limited in the present disclosure), and the value of the temperature threshold may be set according to practical situations.
In an embodiment of the disclosure, a gain detector may be provided that determines a current gain characteristic of the power amplifier when an operating temperature of the power amplifier is outside a second temperature range; a mapping table of temperature and gain characteristics may also be pre-stored in the control module, and the current gain characteristic of the power amplifier may be determined according to the mapping table.
A specific procedure for determining the current gain characteristic of the power amplifier by the gain detector is described below.
In an exemplary embodiment, determining a current gain characteristic of a power amplifier includes: collecting an input signal of a power amplifier and an output signal of the power amplifier; the current gain characteristic of the power amplifier is determined from the input signal of the power amplifier and the output signal of the power amplifier.
In an embodiment of the disclosure, referring to fig. 3, when the operating temperature of the power amplifier 206 is outside the second temperature range, the gain detector 2082 may collect the input signal of the power amplifier 206 and the output signal of the power amplifier 206, determine the current gain characteristic of the power amplifier 206 in the target frequency band (e.g., 800M spread spectrum frequency band) according to the input signal of the power amplifier 206 and the output signal of the power amplifier 206, and input the current gain characteristic of the power amplifier 206 in the target frequency band to the controller 2083.
Specifically, the instantaneous gain characteristics of the power amplifier include instantaneous amplitude-frequency characteristics and instantaneous phase-frequency characteristics of the power amplifier; the gain detector 2082 performs FFT fourier transform on the input signal 1 (i.e., the input signal of the power amplifier) to obtain a frequency spectrum of the input signal 1 in the frequency domain, and calculates a power spectral density psd_p1 of the input signal 1; the gain detector 2082 performs FFT fourier transform on the output signal 2 (i.e., the output signal of the power amplifier) to obtain a frequency spectrum of the output signal 2 in the frequency domain, and calculates the power spectral density psd_p2 of the output signal 2; the two power spectral densities are compared to obtain the instantaneous gain characteristic of the power amplifier, wherein the instantaneous amplitude-frequency characteristic is the ratio of the two power spectral densities, namely, the instantaneous amplitude-frequency characteristic PSDF_P of the power amplifier can be obtained by the following formula: psdf_p=psd_p2/psd_p1.
The instantaneous phase-frequency characteristic phasef_p of the power amplifier can be obtained by the following formula:
PHASEF_P= atan（（Im（PSD_P2）- Im（PSD_P1））/（Re（PSD_P2）- Re（PSD_P1）））。
where atan represents an arctangent function, re () represents a real part, and Im () represents an imaginary part.
In the embodiment of the disclosure, the gain detector is used for detecting the current gain characteristic of the power amplifier, so that more accurate instantaneous gain characteristic can be obtained.
A specific procedure for determining the current gain characteristic of the power amplifier according to the mapping table will be described.
In an exemplary embodiment, determining a current gain characteristic of a power amplifier includes: and determining a preset gain characteristic corresponding to the working temperature of the power amplifier, and taking the preset gain characteristic as the current gain characteristic of the power amplifier.
In this disclosure embodiment, referring to fig. 2, a mapping table of temperature and gain characteristics may be pre-stored in the control module 208, that is, a theoretical gain-temperature characteristic value of the power amplifier is pre-stored in the controller, the temperature sensor 2072 is directly connected to the control module 208, and the control module 208 determines, according to the mapping table and the currently collected working temperature, a preset gain characteristic corresponding to the working temperature, and uses the preset gain characteristic as the current gain characteristic of the power amplifier.
In the embodiment of the disclosure, the mapping table of the temperature and the gain characteristic is prestored in the control module, that is, the gain detector is not required to detect the current gain characteristic, so that the volume of the remote radio frequency unit can be reduced, and the cost is saved.
In step S108, an amplitude-frequency characteristic compensation value and a phase-frequency characteristic compensation value are determined according to the current insertion loss characteristic, the current gain characteristic, the preset amplitude-frequency characteristic and the preset phase-frequency characteristic.
In the embodiment of the disclosure, the control module may fit the current amplitude frequency characteristic (may also be referred to as an instantaneous amplitude frequency characteristic) and the current phase frequency characteristic (may also be referred to as an instantaneous phase frequency characteristic) of the combination (bandpass filter+power amplifier) in the entire 800M spread spectrum band according to the current insertion loss characteristic of the bandpass filter in the target band (for example, 800M spread spectrum band) and the current gain characteristic of the power amplifier in the target band (for example, 800M spread spectrum band).
The preset amplitude frequency characteristic can be a preset ideal amplitude frequency characteristic, the preset phase frequency characteristic can be a preset ideal phase frequency characteristic, and the preset amplitude frequency characteristic and the preset phase frequency characteristic can be set according to actual conditions.
In the embodiment of the disclosure, the control module may obtain compensation values of each frequency band of the synthesized (band-pass filter+power amplifier) instantaneous frequency-amplitude characteristic and instantaneous phase-frequency characteristic in the 800M spread spectrum frequency band according to the synthesized (band-pass filter+power amplifier) instantaneous frequency-amplitude characteristic and instantaneous phase-frequency characteristic, as well as the preset ideal frequency-amplitude characteristic and the preset ideal phase-frequency characteristic, and input the compensation values of each frequency band of the synthesized (band-pass filter+power amplifier) instantaneous frequency-amplitude characteristic and instantaneous phase-frequency characteristic in the 800M spread spectrum frequency band to the adaptive compensator.
In an exemplary embodiment, determining the amplitude frequency characteristic compensation value and the phase frequency characteristic compensation value according to the current insertion loss characteristic, the current gain characteristic, the preset amplitude frequency characteristic and the preset phase frequency characteristic includes: obtaining an amplitude frequency characteristic compensation value according to the current amplitude frequency characteristic of the band-pass filter, the current amplitude frequency characteristic of the power amplifier and the preset amplitude frequency characteristic; and obtaining a phase frequency characteristic compensation value according to the current phase frequency characteristic of the band-pass filter, the current phase frequency characteristic of the power amplifier and the preset phase frequency characteristic.
In the embodiment of the disclosure, the control module can obtain the compensation value of the instantaneous amplitude-frequency characteristic of the synthesis (band-pass filter+power amplifier) in each frequency band in the 800M spread spectrum frequency band according to the instantaneous amplitude-frequency characteristic of the synthesis (band-pass filter+power amplifier) in the 800M spread spectrum frequency band and the preset ideal amplitude-frequency characteristic; the compensation value of the instantaneous phase frequency characteristic of the synthesis (band-pass filter and power amplifier) in each frequency band in the 800M spread spectrum frequency band can be obtained according to the instantaneous phase frequency characteristic of the synthesis (band-pass filter and power amplifier) in the 800M spread spectrum frequency band and the preset ideal phase frequency characteristic.
Specifically, according to the calculation process of the instantaneous insertion loss characteristic of the band-pass filter, the instantaneous amplitude-frequency characteristic of the band-pass filter is expressed as psdf_f, and then the instantaneous amplitude-frequency characteristic of the band-pass filter at each sampling point j can be expressed as psdf_f (j); the instantaneous phase-frequency characteristic of the band-pass filter is denoted as PHASEF_F, and then the instantaneous amplitude-frequency characteristic of the band-pass filter at each sampling point j can be denoted as PHASEF_F (j); according to the calculation process of the instantaneous gain characteristic of the power amplifier, the instantaneous amplitude-frequency characteristic of the power amplifier is expressed as PSDF_P, and then the instantaneous amplitude-frequency characteristic of the power amplifier at each sampling point j can be expressed as PSDF_P (j); the instantaneous phase-frequency characteristic of the power amplifier is denoted as phasef_p, and then the instantaneous amplitude-frequency characteristic of the power amplifier at each sampling point j may be denoted as phasef_p (j).
Specifically, when calculating the compensation value, each sampling point is compared and fitted one by one, and the amplitude frequency characteristic compensation value at each sampling point is obtained according to the current amplitude frequency characteristic of the band-pass filter at each sampling point, the current amplitude frequency characteristic of the power amplifier at each sampling point and the preset amplitude frequency characteristic, namely, the amplitude frequency characteristic compensation value of each sampling point is: k0- [ log (psdf_p (j)) -log (psd_f (j)) ] where K0 is an ideal amplitude-frequency characteristic, K0 is a constant, and log (psdf_p (j)) -log (psd_f (j)) is a logarithmic difference of an instantaneous amplitude-frequency characteristic.
Specifically, according to the current phase frequency characteristic of the band-pass filter at each sampling point, the current phase frequency characteristic of the power amplifier at each sampling point and the preset phase frequency characteristic, the phase frequency characteristic compensation value at each sampling point is obtained, namely, the phase frequency characteristic compensation value of each sampling point is: phi [ F (j) ] -phi [ PHASEF_P (j) -PHASEF_F (j) ], wherein phi [ F (j) ] is an ideal phase frequency characteristic, K0 is a constant, and [ PHASEF_P (j) -PHASEF_F (j) ] is a line number difference of the instantaneous phase frequency characteristic.
In step S110, the output signal of the band-pass filter is compensated according to the amplitude-frequency characteristic compensation value and the phase-frequency characteristic compensation value, so as to obtain a compensation result, and the compensation result is used as the input signal of the power amplifier.
In the disclosed embodiment, referring to fig. 2 and 3, one input end of the adaptive compensator 209 is connected to the output end of the band-pass filter 2042, the other input end is connected to the control module 208 (or the controller 2083), and the output end of the adaptive compensator 209 is connected to the input end of the power amplifier 206; the adaptive compensator 209 receives the output signal of the band-pass filter 2042, compensates each frequency band of the band-pass filter 2042 according to the amplitude-frequency characteristic compensation value and the phase-frequency characteristic compensation value determined by the control module 208 (or the controller 2083), obtains a compensation result, and inputs the compensation result as an input signal of the power amplifier 206 into the power amplifier 206.
In the embodiment of the disclosure, the steps S102 to S110 can be continuously circulated, the instantaneous amplitude frequency characteristic and the instantaneous phase frequency characteristic of the integrated (band-pass filter+power amplifier) in the 800M spread spectrum frequency band can be dynamically obtained and compensated, the influence of temperature drift on the performance is resisted, the performance of 800M NR spread spectrum equipment is improved, and the system adaptability, flexibility and resource utilization rate are improved.
The signal compensation method provided by the embodiment of the disclosure collects the working temperature of the band-pass filter and the working temperature of the power amplifier; when the working temperature of the band-pass filter is out of the first temperature range, determining the current insertion loss characteristic of the band-pass filter; determining a current gain characteristic of the power amplifier when the operating temperature of the power amplifier is outside of the second temperature range; determining an amplitude frequency characteristic compensation value and a phase frequency characteristic compensation value according to the current insertion loss characteristic, the current gain characteristic, the preset amplitude frequency characteristic and the preset phase frequency characteristic; compensating the output signal of the band-pass filter according to the amplitude-frequency characteristic compensation value and the phase-frequency characteristic compensation value, and taking the compensation result as the input signal of the power amplifier; the method can adaptively compensate the insertion loss characteristic of the band-pass filter and the gain characteristic of the power amplifier according to the working temperature of the band-pass filter and the power amplifier, improves the instantaneous amplitude-frequency characteristic and the flatness of the instantaneous gain characteristic of the far-end radio frequency unit, reduces the influence of temperature drift on the performance of the far-end radio frequency unit, and improves the reliability of the far-end radio frequency unit.
It should also be understood that the above is only intended to assist those skilled in the art in better understanding the embodiments of the present disclosure, and is not intended to limit the scope of the embodiments of the present disclosure. It will be apparent to those skilled in the art from the foregoing examples that various equivalent modifications or variations can be made, for example, some steps of the methods described above may not be necessary, or some steps may be newly added, etc. Or a combination of any two or more of the above. Such modifications, variations, or combinations thereof are also within the scope of the embodiments of the present disclosure.
It should also be understood that the foregoing description of the embodiments of the present disclosure focuses on highlighting differences between the various embodiments and that the same or similar elements not mentioned may be referred to each other and are not repeated here for brevity.
It should also be understood that the sequence numbers of the above processes do not mean the order of execution, and the order of execution of the processes should be determined by the functions and internal logic thereof, and should not constitute any limitation on the implementation process of the embodiments of the present disclosure.
It is also to be understood that in the various embodiments of the disclosure, terms and/or descriptions of the various embodiments are consistent and may be referenced to one another in the absence of a particular explanation or logic conflict, and that the features of the various embodiments may be combined to form new embodiments in accordance with their inherent logic relationships.
Examples of the method for determining the network anomaly detection model provided by the present disclosure are described in detail above. It will be appreciated that the computer device, in order to carry out the functions described above, comprises corresponding hardware structures and/or software modules that perform the respective functions. Those of skill in the art will readily appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as hardware or combinations of hardware and computer software. Whether a function is implemented as hardware or computer software driven hardware depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present disclosure.
The following are remote radio unit embodiments of the present disclosure that may be used to perform method embodiments of the present disclosure. For details not disclosed in the remote rf unit embodiments of the present disclosure, please refer to the method embodiments of the present disclosure.
The disclosed embodiment provides a remote radio unit, comprising: the device comprises a band-pass filter, a power amplifier, a temperature sensor, a control module and a compensator; the temperature sensor is used for collecting the working temperature of the band-pass filter and the working temperature of the power amplifier; the control module is used for determining the current insertion loss characteristic of the band-pass filter when the working temperature of the band-pass filter is out of a first temperature range; determining a current gain characteristic of the power amplifier when an operating temperature of the power amplifier is outside a second temperature range; determining an amplitude frequency characteristic compensation value and a phase frequency characteristic compensation value according to the current insertion loss characteristic, the current gain characteristic, a preset amplitude frequency characteristic and a preset phase frequency characteristic; the compensator is used for compensating the output signal of the band-pass filter according to the amplitude-frequency characteristic compensation value and the phase-frequency characteristic compensation value to obtain a compensation result, and the compensation result is used as an input signal of the power amplifier and is input into the power amplifier.
In some exemplary embodiments of the present disclosure, the control module includes: an insertion loss detector, a gain detector, and a controller; the insertion loss detector is used for collecting an input signal of the band-pass filter and an output signal of the band-pass filter when the working temperature of the band-pass filter is out of a first temperature range; determining the current insertion loss characteristic of the band-pass filter according to the input signal of the band-pass filter and the output signal of the band-pass filter; the gain detector is used for collecting an input signal of the power amplifier and an output signal of the power amplifier when the working temperature of the power amplifier is out of a second temperature range; determining a current gain characteristic of the power amplifier according to an input signal of the power amplifier and an output signal of the power amplifier; the controller is used for determining an amplitude frequency characteristic compensation value and a phase frequency characteristic compensation value according to the current insertion loss characteristic, the current gain characteristic, the preset amplitude frequency characteristic and the preset phase frequency characteristic.
In some exemplary embodiments of the present disclosure, the remote radio unit further comprises: an insertion loss detector and a gain detector; the insertion loss detector is used for collecting an input signal of the band-pass filter and an output signal of the band-pass filter; determining the current insertion loss characteristic of the band-pass filter according to the input signal of the band-pass filter and the output signal of the band-pass filter; the gain detector is used for collecting an input signal of the power amplifier and an output signal of the power amplifier; determining a current gain characteristic of the power amplifier according to an input signal of the power amplifier and an output signal of the power amplifier.
In some exemplary embodiments of the present disclosure, a control module is configured to determine a preset insertion loss characteristic corresponding to an operating temperature of the band-pass filter, and take the preset insertion loss characteristic as a current insertion loss characteristic of the band-pass filter; and determining a preset gain characteristic corresponding to the working temperature of the power amplifier, and taking the preset gain characteristic as the current gain characteristic of the power amplifier.
In some exemplary embodiments of the present disclosure, the current insertion loss characteristic includes a current amplitude-frequency characteristic of the band-pass filter and a current phase-frequency characteristic of the band-pass filter, and the current gain characteristic includes a current amplitude-frequency characteristic of the power amplifier and a current phase-frequency characteristic of the power amplifier; the control module is used for: obtaining the amplitude frequency characteristic compensation value according to the current amplitude frequency characteristic of the band-pass filter, the current amplitude frequency characteristic of the power amplifier and the preset amplitude frequency characteristic; and obtaining the phase frequency characteristic compensation value according to the current phase frequency characteristic of the band-pass filter, the current phase frequency characteristic of the power amplifier and the preset phase frequency characteristic.
In some exemplary embodiments of the present disclosure, the temperature sensor includes a first temperature sensor and a second temperature sensor; and when the distance between the band-pass filter and the power amplifier is larger than a preset distance, acquiring the working temperature of the band-pass filter by using a first temperature sensor, and acquiring the working temperature of the power amplifier by using a second temperature sensor.
In some exemplary embodiments of the present disclosure, the temperature sensor includes a target temperature sensor; and when the distance between the band-pass filter and the power amplifier is smaller than or equal to a preset distance, acquiring the working temperature of the band-pass filter and the working temperature of the power amplifier by using a target temperature sensor.
In some exemplary embodiments of the present disclosure, the operating temperature of the band pass filter is outside of a first temperature range, comprising: the working temperature of the band-pass filter is higher than a first temperature threshold or lower than a second temperature threshold; the operating temperature of the power amplifier is outside a second temperature range, comprising: the operating temperature of the band-pass filter is higher than the third temperature threshold or lower than the fourth temperature threshold.
It should be noted that the block diagrams shown in the above figures are functional entities and do not necessarily correspond to physically or logically separate entities. These functional entities may be implemented in software or in one or more hardware modules or integrated circuits or in different networks and/or processor terminals and/or microcontroller terminals.
Fig. 4 is a schematic diagram of an electronic device according to an exemplary embodiment. It should be noted that the electronic device shown in fig. 4 is only an example, and should not impose any limitation on the functions and the scope of use of the embodiments of the present disclosure.
As shown in fig. 4, the electronic device 400 includes a Central Processing Unit (CPU) 401, which can perform various appropriate actions and processes according to a program stored in a Read Only Memory (ROM) 402 or a program loaded from a storage section 408 into a Random Access Memory (RAM) 403. In the RAM 403, various programs and data necessary for the operation of the electronic device 400 are also stored. The CPU 401, ROM 402, and RAM 403 are connected to each other by a bus 404. An input/output (I/O) interface 405 is also connected to bus 404.
The following components are connected to the I/O interface 405: an input section 406 including a keyboard, a mouse, and the like; an output portion 407 including a Cathode Ray Tube (CRT), a Liquid Crystal Display (LCD), and the like, and a speaker, and the like; a storage section 408 including a hard disk or the like; and a communication section 409 including a network interface card such as a LAN card, a modem, or the like. The communication section 409 performs communication processing via a network such as the internet. The drive 410 is also connected to the I/O interface 405 as needed. A removable medium 411 such as a magnetic disk, an optical disk, a magneto-optical disk, a semiconductor memory, or the like is installed on the drive 410 as needed, so that a computer program read therefrom is installed into the storage section 408 as needed.
In particular, according to embodiments of the present disclosure, the processes described above with reference to flowcharts may be implemented as computer software programs. For example, embodiments of the present disclosure include a computer program product comprising a computer program embodied on a computer readable medium, the computer program comprising program code for performing the method shown in the flowcharts. In such an embodiment, the computer program may be downloaded and installed from a network via the communication portion 409 and/or installed from the removable medium 411. The above-described functions defined in the system of the present disclosure are performed when the computer program is executed by a Central Processing Unit (CPU) 401.
It should be noted that the computer readable medium shown in the present disclosure may be a computer readable signal medium or a computer readable storage medium, or any combination of the two. The computer readable storage medium can be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, terminal device, or apparatus, or a combination of any of the foregoing. More specific examples of the computer-readable storage medium may include, but are not limited to: an electrical connection having one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing. In the present disclosure, a computer readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, terminal device, or apparatus. In the present disclosure, however, the computer-readable signal medium may include a data signal propagated in baseband or as part of a carrier wave, with the computer-readable program code embodied therein. Such a propagated data signal may take any of a variety of forms, including, but not limited to, electro-magnetic, optical, or any suitable combination of the foregoing. A computer readable signal medium may also be any computer readable medium that is not a computer readable storage medium and that can communicate, propagate, or transport a program for use by or in connection with an instruction execution system, terminal device, or apparatus. Program code embodied on a computer readable medium may be transmitted using any appropriate medium, including but not limited to: wireless, wire, fiber optic cable, RF, etc., or any suitable combination of the foregoing.
The flowcharts and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of systems, methods and computer program products according to various embodiments of the present disclosure. 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 some 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 or flowchart illustration, and combinations of blocks in the block diagrams 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.
The units involved in the embodiments of the present disclosure may be implemented by means of software, or may be implemented by means of hardware. The described units may also be provided in a processor, for example, described as: a processor includes a transmitting unit, an acquiring unit, a determining unit, and a first processing unit. The names of these units do not constitute a limitation on the unit itself in some cases, and for example, the transmitting unit may also be described as "a unit that transmits a picture acquisition request to a connected server".
As another aspect, the present disclosure also provides a computer-readable storage medium that may be included in the electronic device described in the above embodiments; or may exist alone without being incorporated into the electronic device. The computer-readable storage medium carries one or more programs which, when executed by the electronic device, cause the electronic device to implement the methods described in the embodiments below. For example, the electronic device may implement the steps shown in fig. 1.
According to one aspect of the present disclosure, there is provided a computer program product or computer program comprising computer instructions stored in a computer readable storage medium. The processor of the computer device reads the computer instructions from the computer-readable storage medium, and the processor executes the computer instructions, so that the computer device performs the methods provided in the various alternative implementations of the above-described embodiments.
It should be understood that any number of elements in the drawings of the present disclosure are for illustration and not limitation, and that any naming is used for distinction only and not for limitation.
Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This disclosure is intended to cover any adaptations, uses, or adaptations of the disclosure following the general principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.
It is to be understood that the present disclosure is not limited to the precise arrangements and instrumentalities shown in the drawings, and that various modifications and changes may be effected without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.
Claims (10)
1. A signal compensation method, which is characterized by being applied to a remote radio frequency unit, wherein the remote radio frequency unit comprises a band-pass filter and a power amplifier;
the method comprises the following steps:
collecting the working temperature of the band-pass filter and the working temperature of the power amplifier;
when the working temperature of the band-pass filter is out of a first temperature range, determining the current insertion loss characteristic of the band-pass filter;
Determining a current gain characteristic of the power amplifier when an operating temperature of the power amplifier is outside a second temperature range;
determining an amplitude frequency characteristic compensation value and a phase frequency characteristic compensation value according to the current insertion loss characteristic, the current gain characteristic, a preset amplitude frequency characteristic and a preset phase frequency characteristic;
and compensating the output signal of the band-pass filter according to the amplitude-frequency characteristic compensation value and the phase-frequency characteristic compensation value to obtain a compensation result, and taking the compensation result as an input signal of the power amplifier.
2. The method of claim 1, wherein determining the current insertion loss characteristics of the bandpass filter comprises:
collecting an input signal of the band-pass filter and an output signal of the band-pass filter;
determining the current insertion loss characteristic of the band-pass filter according to the input signal of the band-pass filter and the output signal of the band-pass filter;
determining a current gain characteristic of the power amplifier comprises:
collecting an input signal of the power amplifier and an output signal of the power amplifier;
determining a current gain characteristic of the power amplifier according to an input signal of the power amplifier and an output signal of the power amplifier.
3. The method of claim 1, wherein determining the current insertion loss characteristics of the bandpass filter comprises:
determining a preset insertion loss characteristic corresponding to the working temperature of the band-pass filter, and taking the preset insertion loss characteristic as the current insertion loss characteristic of the band-pass filter;
determining a current gain characteristic of the power amplifier comprises:
and determining a preset gain characteristic corresponding to the working temperature of the power amplifier, and taking the preset gain characteristic as the current gain characteristic of the power amplifier.
4. A method according to any of claims 1-3, characterized in that the current insertion loss characteristics comprise a current amplitude-frequency characteristic of the band-pass filter and a current phase-frequency characteristic of the band-pass filter, the current gain characteristics comprising a current amplitude-frequency characteristic of the power amplifier and a current phase-frequency characteristic of the power amplifier;
wherein determining an amplitude-frequency characteristic compensation value and a phase-frequency characteristic compensation value according to the current insertion loss characteristic, the current gain characteristic, a preset amplitude-frequency characteristic and a preset phase-frequency characteristic comprises:
obtaining the amplitude frequency characteristic compensation value according to the current amplitude frequency characteristic of the band-pass filter, the current amplitude frequency characteristic of the power amplifier and the preset amplitude frequency characteristic;
And obtaining the phase frequency characteristic compensation value according to the current phase frequency characteristic of the band-pass filter, the current phase frequency characteristic of the power amplifier and the preset phase frequency characteristic.
5. A method according to any of claims 1-3, characterized in that acquiring the operating temperature of the band pass filter and the operating temperature of the power amplifier comprises:
when the distance between the band-pass filter and the power amplifier is larger than a preset distance, acquiring the working temperature of the band-pass filter by using a first temperature sensor, and acquiring the working temperature of the power amplifier by using a second temperature sensor, wherein the first temperature sensor and the second temperature sensor are different temperature sensors;
and when the distance between the band-pass filter and the power amplifier is smaller than or equal to a preset distance, acquiring the working temperature of the band-pass filter and the working temperature of the power amplifier by using a target temperature sensor.
6. A method according to any one of claims 1-3, wherein the operating temperature of the band pass filter is outside a first temperature range, comprising: the working temperature of the band-pass filter is higher than a first temperature threshold or lower than a second temperature threshold;
The operating temperature of the power amplifier is outside a second temperature range, comprising: the operating temperature of the band-pass filter is higher than the third temperature threshold or lower than the fourth temperature threshold.
7. A remote radio unit comprising: the device comprises a band-pass filter, a power amplifier, a temperature sensor, a control module and a compensator;
the temperature sensor is used for collecting the working temperature of the band-pass filter and the working temperature of the power amplifier;
the control module is used for determining the current insertion loss characteristic of the band-pass filter when the working temperature of the band-pass filter is out of a first temperature range; determining a current gain characteristic of the power amplifier when an operating temperature of the power amplifier is outside a second temperature range; determining an amplitude frequency characteristic compensation value and a phase frequency characteristic compensation value according to the current insertion loss characteristic, the current gain characteristic, a preset amplitude frequency characteristic and a preset phase frequency characteristic;
the compensator is used for compensating the output signal of the band-pass filter according to the amplitude-frequency characteristic compensation value and the phase-frequency characteristic compensation value to obtain a compensation result, and the compensation result is used as an input signal of the power amplifier and is input into the power amplifier.
8. The remote radio unit of claim 7, wherein the control module comprises: an insertion loss detector, a gain detector, and a controller;
the insertion loss detector is used for collecting an input signal of the band-pass filter and an output signal of the band-pass filter when the working temperature of the band-pass filter is out of a first temperature range; determining the current insertion loss characteristic of the band-pass filter according to the input signal of the band-pass filter and the output signal of the band-pass filter;
the gain detector is used for collecting an input signal of the power amplifier and an output signal of the power amplifier when the working temperature of the power amplifier is out of a second temperature range; determining a current gain characteristic of the power amplifier according to an input signal of the power amplifier and an output signal of the power amplifier;
the controller is used for determining an amplitude frequency characteristic compensation value and a phase frequency characteristic compensation value according to the current insertion loss characteristic, the current gain characteristic, the preset amplitude frequency characteristic and the preset phase frequency characteristic.
9. An electronic device, comprising:
at least one processor;
Storage means for storing at least one program which, when executed by the at least one processor, causes the at least one processor to implement the method of any one of claims 1 to 6.
10. A computer readable storage medium, on which a computer program is stored, which computer program, when being executed by a processor, implements the method according to any of claims 1 to 6.
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| CN105306078A (en) * | 2015-11-09 | 2016-02-03 | 天津七一二通信广播有限公司 | High gain amplifier for radio frequency direct sampling receiver and realization method thereof |
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| US8542768B2 (en) * | 2009-12-21 | 2013-09-24 | Dali Systems Co. Ltd. | High efficiency, remotely reconfigurable remote radio head unit system and method for wireless communications |
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| CN105306078A (en) * | 2015-11-09 | 2016-02-03 | 天津七一二通信广播有限公司 | High gain amplifier for radio frequency direct sampling receiver and realization method thereof |
| CN113395115A (en) * | 2020-03-11 | 2021-09-14 | 华为技术有限公司 | Radio over fiber communication system and nonlinear compensation method |
| CN113484809A (en) * | 2021-07-14 | 2021-10-08 | 上海联影医疗科技股份有限公司 | Output stabilizing device of radio frequency power amplifier, radio frequency system and magnetic resonance system |
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