WO2016112483A1 - 信号放大处理的方法和装置 - Google Patents

信号放大处理的方法和装置 Download PDF

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Publication number
WO2016112483A1
WO2016112483A1 PCT/CN2015/070518 CN2015070518W WO2016112483A1 WO 2016112483 A1 WO2016112483 A1 WO 2016112483A1 CN 2015070518 W CN2015070518 W CN 2015070518W WO 2016112483 A1 WO2016112483 A1 WO 2016112483A1
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Prior art keywords
parameter values
power amplifier
signal
group
amplification processing
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PCT/CN2015/070518
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English (en)
French (fr)
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黄伟
冯祥
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华为技术有限公司
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Priority to PCT/CN2015/070518 priority Critical patent/WO2016112483A1/zh
Priority to CN201580024383.9A priority patent/CN106464650B/zh
Priority to JP2017536853A priority patent/JP2018501736A/ja
Priority to CA2973488A priority patent/CA2973488C/en
Priority to ES15877403T priority patent/ES2710605T3/es
Priority to EP15877403.4A priority patent/EP3232628B1/en
Priority to KR1020177022254A priority patent/KR101946435B1/ko
Publication of WO2016112483A1 publication Critical patent/WO2016112483A1/zh
Priority to US15/645,579 priority patent/US10038412B2/en

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    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03FAMPLIFIERS
    • H03F1/00Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
    • H03F1/32Modifications of amplifiers to reduce non-linear distortion
    • H03F1/3241Modifications of amplifiers to reduce non-linear distortion using predistortion circuits
    • H03F1/3247Modifications of amplifiers to reduce non-linear distortion using predistortion circuits using feedback acting on predistortion circuits
    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03FAMPLIFIERS
    • H03F1/00Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
    • H03F1/30Modifications of amplifiers to reduce influence of variations of temperature or supply voltage or other physical parameters
    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03FAMPLIFIERS
    • H03F1/00Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
    • H03F1/32Modifications of amplifiers to reduce non-linear distortion
    • H03F1/3241Modifications of amplifiers to reduce non-linear distortion using predistortion circuits
    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03FAMPLIFIERS
    • H03F1/00Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
    • H03F1/02Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation
    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03FAMPLIFIERS
    • H03F3/00Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/189High-frequency amplifiers, e.g. radio frequency amplifiers
    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03FAMPLIFIERS
    • H03F3/00Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/189High-frequency amplifiers, e.g. radio frequency amplifiers
    • H03F3/19High-frequency amplifiers, e.g. radio frequency amplifiers with semiconductor devices only
    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03FAMPLIFIERS
    • H03F3/00Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/20Power amplifiers, e.g. Class B amplifiers, Class C amplifiers
    • H03F3/24Power amplifiers, e.g. Class B amplifiers, Class C amplifiers of transmitter output stages
    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03FAMPLIFIERS
    • H03F3/00Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/20Power amplifiers, e.g. Class B amplifiers, Class C amplifiers
    • H03F3/24Power amplifiers, e.g. Class B amplifiers, Class C amplifiers of transmitter output stages
    • H03F3/245Power amplifiers, e.g. Class B amplifiers, Class C amplifiers of transmitter output stages with semiconductor devices only
    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03FAMPLIFIERS
    • H03F2200/00Indexing scheme relating to amplifiers
    • H03F2200/321Use of a microprocessor in an amplifier circuit or its control circuit
    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03FAMPLIFIERS
    • H03F2200/00Indexing scheme relating to amplifiers
    • H03F2200/451Indexing scheme relating to amplifiers the amplifier being a radio frequency amplifier
    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03FAMPLIFIERS
    • H03F2200/00Indexing scheme relating to amplifiers
    • H03F2200/462Indexing scheme relating to amplifiers the current being sensed
    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03FAMPLIFIERS
    • H03F2200/00Indexing scheme relating to amplifiers
    • H03F2200/465Power sensing
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B1/00Details 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
    • H04B1/02Transmitters

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a method and apparatus for signal amplification processing.
  • Power amplifier is an important RF device widely used in base stations, terminals and other devices.
  • power amplifiers in base stations employ multiple input power amplifiers, such as dual input power amplifiers, three input power amplifiers, and the like.
  • a signal decomposition device is disposed in the transmitter for decomposing the input signal, and signal decomposition parameters and signal decomposition parameters are set in the signal decomposition device.
  • the output of the signal decomposition device is connected to the input of the power amplifier, and the input signal is decomposed in various ways. For example, if a signal of 30 dBm is output, for example, a dual input power amplifier can pass 17 dBm. The RF signal and the 18V power amplifier voltage are obtained. It can also be obtained by the 21dBm RF signal and the 7V power amplifier voltage. In order to ensure the power amplifier's power amplifier efficiency is the highest, the signal with the highest power amplifier efficiency can be determined in the above various combinations.
  • the parameter value of the decomposition parameter is fixed to a set of parameter values corresponding to the maximum value of the power amplifier efficiency.
  • the parameter value of the signal decomposition parameter of the signal decomposition device is a fixed configuration, in practical applications, such as various communication systems using a heterogeneous network networking mode, the FET in the power amplifier of the base station is often subjected to the outside world.
  • the influence of the environment (such as temperature) will make the power amplifier efficiency obtained by the transmitter using the above fixed parameter values no longer the maximum, thus making the power amplifier less efficient.
  • embodiments of the present invention provide a method and apparatus for signal amplification processing.
  • the technical solution is as follows:
  • an apparatus for signal amplification processing comprising:
  • the first obtaining module is configured to set a plurality of sets of parameter values for the signal decomposition parameter group, perform signal amplification processing based on each set of parameter values, and obtain power amplifier efficiency corresponding to each set of parameter values;
  • a second acquiring module configured to acquire a set of parameter values corresponding to a maximum power amplifier efficiency of the power amplifier efficiency corresponding to each set of parameter values
  • a setting module configured to set a set of parameter values corresponding to the maximum power amplifier efficiency as parameter values of the signal decomposition parameter group.
  • the first acquiring module is further configured to:
  • Demodulating signals in at least one of the obtained plurality of signal groups are adjusted according to a mode search algorithm, and for each adjustment, determining a set of parameter values of the signal decomposition parameter group according to the adjusted plurality of signal groups ;
  • the signal amplification processing is performed based on each determined parameter value of each group, and the power amplifier efficiency corresponding to each group of parameter values is obtained.
  • the first acquiring module is configured to:
  • the first obtaining module is configured to:
  • the signal amplification processing is performed based on each of the determined parameter values, and the instantaneous power amplifier efficiency corresponding to the sampled input signal is obtained in the process of performing signal amplification processing based on each set of parameter values.
  • the first acquiring module is configured to:
  • the first obtaining module is configured to:
  • the signal amplification processing is performed based on each determined parameter value of each group, and the average power amplifier efficiency in the time period used in the signal amplification processing process is acquired in the process of performing signal amplification processing based on each set of parameter values.
  • the first acquiring module is configured to:
  • a method of signal amplification processing comprising:
  • a set of parameter values corresponding to the maximum power amplifier efficiency is set as a parameter value of the signal decomposition parameter group.
  • the group of signal decomposition parameter sets a plurality of sets of parameter values, respectively performing signal amplification processing based on each set of parameter values, and acquiring corresponding parameter values of each group Amplifier efficiency, including:
  • Demodulating signals in at least one of the obtained plurality of signal groups are adjusted according to a mode search algorithm, and for each adjustment, determining a set of parameter values of the signal decomposition parameter group according to the adjusted plurality of signal groups ;
  • the signal amplification processing is performed based on each determined parameter value of each group, and the power amplifier efficiency corresponding to each group of parameter values is obtained.
  • the obtaining, by the obtaining, the power amplifier efficiency corresponding to the set of initial parameter values includes:
  • the signal amplification processing is performed based on the determined parameter values of each group, and the power amplifier efficiency corresponding to each group of parameter values is obtained, including:
  • the obtaining, by the obtaining, the power amplifier efficiency corresponding to the set of initial parameter values includes:
  • the signal amplification processing is performed based on the determined parameter values of each group, and the power amplifier efficiency corresponding to each group of parameter values is obtained, including:
  • the signal amplification processing is performed based on each determined parameter value of each group, and the average power amplifier efficiency in the time period used in the signal amplification processing process is acquired in the process of performing signal amplification processing based on each set of parameter values.
  • the obtaining a power amplifier efficiency corresponding to each group of parameter values includes:
  • a base station comprising a processor and a memory, wherein:
  • the processor is configured to set a plurality of sets of parameter values for the signal decomposition parameter group, perform signal amplification processing based on each set of parameter values, and obtain power amplifier efficiencies corresponding to each set of parameter values;
  • the processor is further configured to acquire a set of parameter values corresponding to a maximum power amplifier efficiency of the power amplifier efficiency corresponding to each set of parameter values, and store the same in the memory;
  • the processor is further configured to set the signal decomposition parameter group to a set of parameter values corresponding to a maximum power amplifier efficiency.
  • multiple sets of parameter values are set corresponding to the signal decomposition parameters, and signal amplification processing is performed based on each set of parameter values, and the power amplifier efficiency corresponding to each set of parameter values is obtained, and the power amplifier efficiency corresponding to each set of parameter values is obtained.
  • the signal decomposition parameter is set to the obtained parameter value, and a set of parameter values corresponding to the largest power amplifier efficiency among the plurality of sets of parameter values is set as the parameter value of the signal decomposition parameter group.
  • the power amplifier efficiency of the transmitter of the base station in the communication system is kept maximal. Even if the power amplifier of the base station is affected by the external environment, the power amplifier efficiency of the transmitter can be optimally adjusted in the above manner, thereby improving the power amplifier efficiency.
  • FIG. 1 is a flowchart of a method for signal amplification processing according to an embodiment of the present invention
  • FIG. 2 is a schematic diagram of circuit connection of a transmitter according to an embodiment of the present invention.
  • FIG. 3 is a schematic structural diagram of a signal decomposition device according to an embodiment of the present invention.
  • FIG. 4 is a schematic structural diagram of an apparatus for signal amplification processing according to an embodiment of the present invention.
  • FIG. 5 is a schematic structural diagram of a base station according to an embodiment of the present invention.
  • the embodiment of the present invention provides a method for signal amplification processing.
  • the technical solution provided by the embodiment of the present invention is applicable to various communication systems that can adopt a heterogeneous network networking manner, for example, a wideband code division.
  • WCDMA Wideband Code Division Multiple Access
  • TD-SCDMA Time Division-Synchronous Code Division Multiple Access
  • LTE Long-Term Evolution
  • LTE subsequent evolution Communication Systems.
  • the executor of the method for the signal amplification processing may be the transmitter of the base station in the foregoing communication system.
  • the base station involved in the embodiment of the present invention may be a Node B (Node-B) in a WCDMA or TD-SCDMA system, or may be an LTE communication.
  • the transmitter of the embodiment of the present invention may be any transmitter including a signal amplifier and a signal transmitting function, such as an eNodeB (evolved NodeB) in the system or a similar base station device in the LTE subsequent evolved communication system. .
  • the processing flow of the method may include the following steps:
  • Step 101 The transmitter sets a plurality of sets of parameter values for the signal decomposition parameter group, performs signal amplification processing based on each set of parameter values, and obtains power amplifier efficiency corresponding to each set of parameter values.
  • Step 102 The transmitter acquires a set of parameter values corresponding to a maximum power amplifier efficiency of the power amplifier efficiency corresponding to each set of parameter values.
  • Step 103 The transmitter sets a set of parameter values corresponding to the maximum power amplifier efficiency as parameter values of the signal decomposition parameter group.
  • the transmitter sets multiple sets of parameter values for the signal decomposition parameter group, performs signal amplification processing based on each set of parameter values, and obtains power amplifier efficiency corresponding to each set of parameter values, and obtains power amplifiers corresponding to each set of parameter values.
  • the set of parameter values corresponding to the maximum power amplifier efficiency in the efficiency, the set of parameter values corresponding to the maximum power amplifier efficiency is set as the parameter value of the signal decomposition parameter group, and the group corresponding to the largest power amplifier efficiency among the plurality of sets of parameter values is corresponding.
  • the parameter value is set to the parameter value of the signal decomposition parameter group, so that the power amplifier efficiency of the base station transmitter in the communication system is kept maximum, and even if the power amplifier of the base station is affected by the external environment, the power amplifier efficiency of the transmitter can be adjusted by the above manner. To the best, thus, can improve the efficiency of the power amplifier.
  • Step 101 The transmitter sets a plurality of sets of parameter values for the signal decomposition parameter group, performs signal amplification processing based on each set of parameter values, and obtains power amplifier efficiency corresponding to each set of parameter values.
  • the transmitter includes a power amplifier for amplifying the power of the signal
  • the power amplifier can be various, such as a single-input power amplifier and a multi-input power amplifier (ie, a power amplifier).
  • the input is provided with multiple signal input ports.
  • the power amplifier in the transmitter usually uses a multi-input power amplifier, such as a dual input power amplifier.
  • a signal decomposition device since there are multiple input ports, it is necessary to use a signal decomposition device to decompose an input signal into a plurality of decomposition signals, and the process of decomposing the input signal by the signal decomposition device is usually preset.
  • Performing a decomposition algorithm wherein the decomposition algorithm is provided with a plurality of signal decomposition parameters (which may be referred to as signal decomposition parameter groups), such as five signal decomposition parameters a, b, c, d, and e, and the five signal decomposition parameters may constitute one Signal decomposition parameter set by setting different parameter values for the signal decomposition parameter group
  • the decomposition algorithm can be adjusted to decompose a plurality of different decomposition signals, and then each decomposition signal can be input from one input port to the multi-input power amplifier for signal amplification processing.
  • the algorithm is a signal decomposition algorithm in the signal decomposition device, so that the differential mode function can include multiple signal decomposition parameters.
  • the transmitter can use a multi-input power amplifier to amplify the input signal.
  • the modulated signal can be transmitted as an input signal to the signal decomposition device, and the user or the technician can pre-set multiple groups of the signal decomposition parameter group.
  • the parameter value can set different parameter values for the signal decomposition device respectively.
  • different decomposition signals can be output through the parameter values in the signal decomposition device, and each decomposition signal can be transmitted to the power.
  • the amplifier after the corresponding power amplification processing, the processed signal is output, and after the signal is coupled by the coupler, the output power can be calculated or measured. At this time, the power amplifier efficiency corresponding to each set of parameter values can be calculated or measured.
  • the processing manner of obtaining the power amplifier efficiency corresponding to each set of parameter values may be various.
  • the following provides an optional processing manner, which may specifically include the following: acquiring a power amplifier that performs signal amplification processing based on each set of parameter values. Current and output power, according to the power amplifier current, output power and preset power amplifier voltage, determine the corresponding power amplifier efficiency.
  • the output power of the output signal and the power amplifier current in the multi-input power amplifier can be measured, and the power amplifier voltage of the multi-input power amplifier is usually a fixed value, such as 28 volts, 50 Volt, in this way, you can use the product of the power amplifier current and the power amplifier voltage to calculate the DC power of the multi-input power amplifier. Then, you can use the output power divided by the calculated DC power of the multi-input power amplifier to get the corresponding value of each set of parameters. Power amplifier efficiency.
  • processing manner of the foregoing step 101 may be various.
  • the following provides an optional processing manner, which may specifically include the following steps:
  • Step 1 performing signal amplification processing based on a set of initial parameter values set by the signal decomposition parameter group, sampling a plurality of input signals having different powers, acquiring a decomposition signal corresponding to each input signal, and obtaining a plurality of input signals and corresponding Decompose the signal consisting of a signal group and obtain the power amplifier efficiency corresponding to the above set of initial parameter values.
  • a set of initial parameter values may be set for the signal decomposition parameter group, and the initial parameter values may be set in the signal decomposition device.
  • the power of the input signal of the signal decomposition device is within a certain power range, such as 0 dBFS.
  • the corresponding power amplifier output power is 0dBm ⁇ 30dBm
  • the input signal can be decomposed by the signal decomposition device, and the signal decomposition device can sample the input signal to obtain more With different power Input signals, such as 0dBFS, -5dBFS, -10dBFS, -15dBFS, -20dBFS, -25dBFS, and -30dBFS input signals, wherein the number of input signals of different powers sampled is greater than or equal to the signal decomposition parameter group
  • the number of signal decomposition parameters, and then the transmitter can separately obtain the decomposition signal corresponding to each input signal, and can form any one of the input signals and the decomposition signal corresponding to the input signal into a signal group, for example, a transmitter.
  • the power amplifier in the envelope is the envelope tracking power amplifier.
  • the power of the output signal of the power amplifier is 30dBm, and the corresponding digital domain power is 0dBFS.
  • the decomposition signal can include the digital signal corresponding to the RF signal of 17dBm and the control signal of the 18V power amplifier voltage. Therefore, the obtained signal group can be expressed as a digital signal group corresponding to [30 dBm, (17 dBm, 18 V)].
  • the transmitter can respectively input each of the decomposition signals through the input port corresponding to the power amplifier, input the power amplifier into the power amplifier for power amplification, and obtain the output signal after coupling by the coupler.
  • the output power of the output signal can be measured, and the power amplifier current of the power amplifier can be measured.
  • the transmitter can calculate the DC power of the power amplifier through the power amplifier current and the preset power amplifier voltage, and the output power can be divided by the calculated power amplifier.
  • the DC power in turn, the power amplifier efficiency, which can be used as the power amplifier efficiency corresponding to the set of parameter values.
  • the foregoing process for obtaining a power amplifier efficiency corresponding to a set of initial parameter values may be various, and the following two alternative processing modes are provided, specifically the following:
  • the instantaneous power amplifier efficiency corresponding to the sampled input signal is obtained.
  • the instantaneous power amplifier efficiency corresponding to each input signal can be obtained.
  • the signal decomposition parameter group used in the signal decomposition device of the transmitter can have a set of initial parameter values, and the transmitter can pass the corresponding processing device.
  • the input signal is subjected to DPD (Digital Pre-Distortion) correction or pre-distortion processing, and then subjected to signal amplification processing, wherein the output signal obtained by the above method is the same as the input signal before the DPD correction or pre-distortion processing,
  • DPD Digital Pre-Distortion
  • signal amplification processing wherein the output signal obtained by the above method is the same as the input signal before the DPD correction or pre-distortion processing
  • the average power amplifier efficiency in the time period used in the signal amplification processing process is obtained.
  • the average power amplifier efficiency in the time period used in the signal amplification processing process may also be acquired.
  • the technician may be the transmitter.
  • a set of signal decomposition parameter sets used in the signal decomposition device The initial parameter value
  • the transmitter can decompose the input signal through a signal decomposition device provided with an initial parameter value, thereby performing signal amplification processing on the decomposed signal, and then measuring the power during the time period used in the signal amplification process.
  • the average power amplifier current and the average output power of the amplifier and in turn, calculate the average power amplifier efficiency of each group of parameter values during the time period used in the signal amplification process.
  • Step two according to the mode search algorithm, adjusting the decomposition signals in at least one of the obtained plurality of signal groups, and determining, for each adjustment, one of the signal decomposition parameter groups according to the adjusted plurality of signal groups Group parameter value.
  • the plurality of signal groups may be adjusted by using, for example, a pattern search algorithm.
  • a pattern search algorithm Specifically, the method of the differential mode function is taken as an example, and the signal groups are assumed to be (x0, y0).
  • the adjusted signal group can be (x0, y0+d), (x1, y1), (x2, y2), (x0, y0-d), (x1, y1), (x2, y2), (x0, Y0), (x1, y1+d), (x2, y2), (x0, y0), (x1, y1-d), (x2, y2), (x0, y0), (x1, y1), ( X2, y2+d), (x0, y0), (x1, y1), (x2, y2-d), etc., where d can be the step size when the decomposition signal is adjusted, and the value of d can be used by the user.
  • multiple adjusted signal groups can be obtained, such as (x0, y0+d), (x1, y1), (x2, y2). ), by multiple signal groups, and the algorithm corresponding to the above differential mode function, obtained by multiple Equations consisting of equations, solving a set of equations, can get a set of parameter values, then the above example includes six adjustments, through each adjustment of the resulting signal group, you can calculate a set of parameter values, so you will get six groups Parameter value.
  • step 3 based on the determined values of each group of parameters, signal amplification processing is performed, and the power amplifier efficiency corresponding to each group of parameter values is obtained.
  • the plurality of sets of parameter values obtained in the above step 2 may be sequentially set in the signal decomposition device, and the transmitter may transmit the input signal to the signal decomposition device for signal decomposition, and then input the decomposition signal into the power amplifier.
  • the power amplification after coupling by the coupler, can calculate the power amplifier efficiency corresponding to each set of parameter values by the above method for calculating the power amplifier efficiency.
  • the processing manner of the foregoing step 3 may include the following: performing signal amplification processing on each of the determined parameter values according to the determined values, respectively performing signal amplification processing based on each set of parameter values. The instantaneous power amplifier efficiency corresponding to the sampled input signal is obtained.
  • the transmitter may obtain the instantaneous power amplifier efficiency corresponding to one of the plurality of input signals that are sampled, or may acquire multiple samples respectively.
  • efficiency of the power amplifier corresponding to each input signal in the input signal refer to the above related content for related processing, and details are not described herein again.
  • the processing manner of the foregoing step 3 may include: performing signal amplification processing on each of the determined parameter values according to the determined, respectively, and performing signal amplification processing on each group of parameter values respectively. The average power amplifier efficiency in the time period used for the signal amplification process is obtained.
  • the average power amplifier efficiency in the time period used in the signal amplification processing process may be acquired, and related For the processing procedure, refer to the related content above, and details are not described herein again.
  • the average output power of the output signal is measured when it reaches a stable state, and the average output power corresponding to each group of parameter values is required to be the same, if the average output power corresponding to a certain set of parameter values If the average output power corresponding to the other group parameter values is different, the signal amplification process is re-executed using the set of parameter values to obtain an average output power, and the above-mentioned judging process is continued until the average output power corresponding to the set of parameter values and other group parameters The value corresponds to the same average output power.
  • the average output power and output signal corresponding to each set of parameter values need to be stable, and the average output power corresponding to each set of parameter values remains the same.
  • the above requirements can be satisfied.
  • the input signal and/or the output signal are actual service signals, and the above requirements will be difficult to meet.
  • the output power and the power amplifier current are measured in real time, the above The requirements can be relaxed, and the signal will converge faster.
  • Step 102 The transmitter acquires a set of parameter values corresponding to a maximum power amplifier efficiency of the power amplifier efficiency corresponding to each set of parameter values.
  • the transmitter can calculate the power amplifier efficiency corresponding to each set of parameter values by the above manner, the transmitter can compare the power amplifier efficiency, find the maximum power amplifier efficiency, and then determine the maximum power amplifier efficiency. A set of parameter values.
  • the adjusted signal group may be (x0, y0+d), (x1, y1), (x2, y2), and a set of parameter values are calculated by the differential mode function, and the signal is transmitted.
  • the machine can set the parameter value of the group in the signal decomposition device, and then perform signal amplification processing on the input signal to obtain the power amplifier efficiency P1 when the input signal is x0. If a set of initial parameter values is set, the input is The power amplifier efficiency when the signal is x0 is P0.
  • the decomposition signal in the signal group is continuously adjusted according to the mode search algorithm, such as (x0, y0+2d), (x1, y1), (x2, y2), Continue to perform the above process, and obtain the power amplifier efficiency P2 when the input signal is x0. If P1 is greater than P2, the transmitter can determine that the power amplifier has the highest efficiency when the input signal is x0, that is, P1, and the corresponding signal group is (x0, y0+d). ).
  • the transmitter can use the same processing method to continue to determine the maximum power amplifier efficiency when the input signal is x1 or x2, and determine the corresponding signal group, for example, (x1, y1+2d), (x2, y2-d), The transmitter can use the signal groups (x0, y0+d), (x1, y1+2d), (x2, y2-d) to calculate a set of parameter values by the above differential mode function.
  • the transmitter may perform a search in the average power amplifier efficiency corresponding to each set of parameter values, obtain a maximum value of the average power amplifier efficiency, and obtain a set of parameter values corresponding to the maximum value.
  • Step 103 The transmitter sets a set of parameter values corresponding to the maximum power amplifier efficiency as parameter values of the signal decomposition parameter group.
  • the parameter value may be set in the signal decomposition device, and then the transmitter may perform signal amplification processing by using the set of parameter values. Then, the transmitter can continue the processing of steps 101 to 103 above for the input signal based on a set of parameter values currently used.
  • multiple sets of parameter values are set for the signal decomposition parameter group, and signal amplification processing is performed based on each set of parameter values, and the power amplifier efficiency corresponding to each set of parameter values is obtained, and the power amplifier efficiency corresponding to each set of parameter values is obtained.
  • the maximum power amplifier efficiency corresponds to a set of parameter values, and the set of parameter values corresponding to the maximum power amplifier efficiency is set as the parameter value of the signal decomposition parameter group, and a set of parameter values corresponding to the largest power amplifier efficiency among the plurality of sets of parameter values is adopted.
  • Set the parameter value of the signal decomposition parameter group to maximize the power amplifier efficiency of the base station transmitter in the communication system. Even if the power amplifier of the base station is affected by the external environment, the power amplifier efficiency of the transmitter can be adjusted to the most Good, thus, can improve the efficiency of the power amplifier.
  • the embodiment of the present invention further provides a device for signal amplification processing, which can be applied to various communication systems adopting a heterogeneous network networking manner, for example, a wideband code division multiple access system, time synchronization A code division multiple access system, a long term evolution system, and a communication system for the subsequent evolution of the long term evolution system.
  • the device can be used as a transmitter with a signal transmitting function in a base station in the above communication system, and the device can also be used as any device that needs to implement signal amplification and signal transmission functions, as shown in the figure.
  • the device includes:
  • the first obtaining module 410 is configured to set a plurality of sets of parameter values for the signal decomposition parameter group, perform signal amplification processing based on each set of parameter values, and obtain power amplifier efficiency corresponding to each set of parameter values;
  • the second obtaining module 420 is configured to obtain a set of parameter values corresponding to a maximum power amplifier efficiency of power amplifier efficiencies corresponding to each set of parameter values;
  • the setting module 430 is configured to set a set of parameter values corresponding to the maximum power amplifier efficiency as parameter values of the signal decomposition parameter group.
  • the first obtaining module 410 is further configured to:
  • Demodulating signals in at least one of the obtained plurality of signal groups are adjusted according to a mode search algorithm, and for each adjustment, determining a set of parameter values of the signal decomposition parameter group according to the adjusted plurality of signal groups ;
  • the signal amplification processing is performed based on each determined parameter value of each group, and the power amplifier efficiency corresponding to each group of parameter values is obtained.
  • the first obtaining module 410 is configured to:
  • the first obtaining module 410 is configured to:
  • the signal amplification processing is performed based on each of the determined parameter values, and the instantaneous power amplifier efficiency corresponding to the sampled input signal is obtained in the process of performing signal amplification processing based on each set of parameter values.
  • the first obtaining module 410 is configured to:
  • the first obtaining module 410 is configured to:
  • the signal amplification processing is performed based on each determined parameter value of each group, and the average power amplifier efficiency in the time period used in the signal amplification processing process is acquired in the process of performing signal amplification processing based on each set of parameter values.
  • the first obtaining module 410 is configured to:
  • multiple sets of parameter values are set for the signal decomposition parameter group, and signal amplification processing is performed based on each set of parameter values, and the power amplifier efficiency corresponding to each set of parameter values is obtained, and the power amplifier efficiency corresponding to each set of parameter values is obtained.
  • the maximum power amplifier efficiency corresponds to a set of parameter values, and the set of parameter values corresponding to the maximum power amplifier efficiency is set as the parameter value of the signal decomposition parameter group, and a set of parameter values corresponding to the largest power amplifier efficiency among the plurality of sets of parameter values is adopted.
  • Set the parameter value of the signal decomposition parameter group to maximize the power amplifier efficiency of the base station transmitter in the communication system. Even if the power amplifier of the base station is affected by the external environment, the power amplifier efficiency of the transmitter can be adjusted to the most Good, thus, can improve the efficiency of the power amplifier.
  • the foregoing functions may be assigned different functions according to requirements.
  • the module is completed, that is, the internal structure of the transmitter is divided into different functional modules to complete all or part of the functions described above.
  • the apparatus for the signal amplification processing provided by the above embodiment is the same as the method embodiment of the signal amplification processing, and the specific implementation process is described in detail in the method embodiment, and details are not described herein again.
  • FIG. 5 it is a schematic diagram of a structure of a base station according to an embodiment of the present invention.
  • the base station may be used to implement a method for amplifying a signal provided in the foregoing embodiment, where the base station may adopt a heterogeneous network networking manner.
  • a base station in a communication system wherein the various communication systems may be a wideband code division multiple access system, a time division synchronous code division multiple access system, a long term evolution system, and a communication system of a long term evolution system subsequent evolution. Specifically:
  • the base station includes a receiver 510, a processor 520, a transmitter 530 and a memory 540, and the receiver 510, the transmitter 530 and the memory 540 are respectively connected to the processor 520.
  • the processor 520 is configured to set a plurality of sets of parameter values for the signal decomposition parameter group, perform signal amplification processing based on each set of parameter values, and obtain power amplifier efficiency corresponding to each set of parameter values;
  • the processor 520 is further configured to acquire a set of parameter values corresponding to a maximum power amplifier efficiency of the power amplifier efficiency corresponding to each set of parameter values, and store the same in the memory 540;
  • the processor 520 is further configured to set a set of parameter values corresponding to the maximum power amplifier efficiency as parameter values of the signal decomposition parameter group.
  • the processor 520 is configured to:
  • Demodulating signals in at least one of the obtained plurality of signal groups are adjusted according to a mode search algorithm, and for each adjustment, determining a set of parameter values of the signal decomposition parameter group according to the adjusted plurality of signal groups ;
  • the signal amplification processing is performed based on each determined parameter value of each group, and the power amplifier efficiency corresponding to each group of parameter values is obtained.
  • the processor 520 is configured to:
  • the signal amplification processing is performed based on each of the determined parameter values, and the instantaneous power amplifier efficiency corresponding to the sampled input signal is obtained in the process of performing signal amplification processing based on each set of parameter values.
  • the processor 520 is configured to:
  • the signal amplification processing is performed based on each determined parameter value of each group, and the average power amplifier efficiency in the time period used in the signal amplification processing process is acquired in the process of performing signal amplification processing based on each set of parameter values.
  • the processor 520 is configured to:
  • multiple sets of parameter values are set for the signal decomposition parameter group, and signal amplification processing is performed based on each set of parameter values, and the power amplifier efficiency corresponding to each set of parameter values is obtained, and the power amplifier efficiency corresponding to each set of parameter values is obtained.
  • the maximum power amplifier efficiency corresponds to a set of parameter values, and the set of parameter values corresponding to the maximum power amplifier efficiency is set as the parameter value of the signal decomposition parameter group, and a set of parameter values corresponding to the largest power amplifier efficiency among the plurality of sets of parameter values is adopted.
  • Set the parameter value of the signal decomposition parameter group to maximize the power amplifier efficiency of the base station transmitter in the communication system. Even if the power amplifier of the base station is affected by the external environment, the power amplifier efficiency of the transmitter can be adjusted to the most Good, thus, can improve Power amplifier efficiency.
  • a person skilled in the art may understand that all or part of the steps of implementing the above embodiments may be completed by hardware, or may be instructed by a program to execute related hardware, and the program may be stored in a computer readable storage medium.
  • the storage medium mentioned may be a read only memory, a magnetic disk or an optical disk or the like.

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Abstract

本发明实施例公开了一种信号放大处理的方法和装置,属于通信技术领域。所述方法包括:对信号分解参数组设置多组参数值,分别基于每组参数值,进行信号放大处理,并获取每组参数值对应的功放效率,获取每组参数值对应的功放效率中的最大的功放效率对应的一组参数值,将最大的功放效率对应的一组参数值设置为信号分解参数组的参数值。采用本发明,可以提高功放效率。

Description

信号放大处理的方法和装置 技术领域
本发明涉及通信技术领域,特别涉及一种信号放大处理的方法和装置。
背景技术
功率放大器是一种重要的射频器件,在基站、终端等设备中广泛应用。通常,基站中的功率放大器采用多输入的功率放大器,例如双输入功率放大器、三输入功率放大器等。
由于功率放大器具有多个输入端,因此就需要对输入信号进行分解,通常,发射机中设置有信号分解器件,用于对输入信号进行分解,信号分解器件中设置有信号分解参数,信号分解参数通常为多个,信号分解器件的输出端与功率放大器的输入端连接,对输入信号进行分解的方式有多种,例如,如果输出30dBm的信号,以双输入功率放大器为例,则可以通过17dBm的射频信号和18V的功放电压得到,也可以通过21dBm的射频信号和7V的功放电压得到等,为了确保功率放大器的功放效率最高,可以在上述多种组合中,确定出功放效率最大时的信号分解参数的参数值,固定为功放效率的最大值对应的一组参数值。
在实现本发明的过程中,发明人发现现有技术至少存在以下问题:
由于信号分解器件的信号分解参数的参数值为固定配置,在实际应用中,如采用异构网组网方式的各类通信系统中,其基站的功率放大器中的场效应管等经常会受到外界环境(如温度等)的影响,会使得发射机使用上述固定的参数值得到的功放效率不再是最大,从而,使得功放效率较低。
发明内容
为了解决现有技术的问题,本发明实施例提供了一种信号放大处理的方法和装置。所述技术方案如下:
第一方面,提供了一种信号放大处理的装置,所述装置包括:
第一获取模块,用于对信号分解参数组设置多组参数值,分别基于每组参数值,进行信号放大处理,并获取每组参数值对应的功放效率;
第二获取模块,用于获取所述每组参数值对应的功放效率中的最大的功放效率对应的一组参数值;
设置模块,用于将所述最大的功放效率对应的一组参数值设置为信号分解参数组的参数值。
结合第一方面,在第一方面的第一种可能实现方式中,所述第一获取模块,还用于:
基于对信号分解参数组设置的一组初始参数值,进行信号放大处理,取样多个具有不同功率的输入信号,获取每个输入信号对应的分解信号,得到多个由输入信号和对应的分解信号组成的信号组,并获取所述一组初始参数值对应的功放效率;
按照模式搜索算法,对得到的多个信号组中的至少一个信号组中的分解信号进行调整,对于每次调整,根据进行调整后的多个信号组,确定信号分解参数组的一组参数值;
分别基于确定出的每组参数值,进行信号放大处理,并获取每组参数值对应的功放效率。
结合第一方面的第一种可能实现方式,在第一方面的第二种可能实现方式中,所述第一获取模块,用于:
在基于所述对信号分解参数组设置的一组初始参数值进行信号放大处理的过程中,获取取样的输入信号对应的瞬时功放效率;
所述第一获取模块,用于:
分别基于确定出的每组参数值,进行信号放大处理,分别在基于每组参数值进行信号放大处理的过程中,获取所述取样的输入信号对应的瞬时功放效率。
结合第一方面的第一种可能实现方式,在第一方面的第三种可能实现方式中,所述第一获取模块,用于:
在基于所述对信号分解参数组设置的一组初始参数值进行信号放大处理的过程中,获取信号放大处理过程所使用的时间段内的平均功放效率;
所述第一获取模块,用于:
分别基于确定出的每组参数值,进行信号放大处理,分别在基于每组参数值进行信号放大处理的过程中,获取信号放大处理过程所使用的时间段内的平均功放效率。
结合第一方面,在第一方面的第四种可能实现方式中,所述第一获取模块,用于:
获取基于每组参数值进行信号放大处理的功放电流和输出功率,根据所述功放电流、所述输出功率和预先设置的功放电压,确定对应的功放效率。
第二方面,提供了一种信号放大处理的方法,所述方法包括:
对信号分解参数组设置多组参数值,分别基于每组参数值,进行信号放大处理,并获取每组参数值对应的功放效率;
获取所述每组参数值对应的功放效率中的最大的功放效率对应的一组参数值;
将所述最大的功放效率对应的一组参数值设置为信号分解参数组的参数值。
结合第二方面,在第二方面的第一种可能实现方式中,所述对信号分解参数组设置多组参数值,分别基于每组参数值,进行信号放大处理,并获取每组参数值对应的功放效率,包括:
基于对信号分解参数组设置的一组初始参数值,进行信号放大处理,取样多个具有不同功率的输入信号,获取每个输入信号对应的分解信号,得到多个由输入信号和对应的分解信号组成的信号组,并获取所述一组初始参数值对应的功放效率;
按照模式搜索算法,对得到的多个信号组中的至少一个信号组中的分解信号进行调整,对于每次调整,根据进行调整后的多个信号组,确定信号分解参数组的一组参数值;
分别基于确定出的每组参数值,进行信号放大处理,并获取每组参数值对应的功放效率。
结合第二方面的第一种可能实现方式,在第二方面的第二种可能实现方式中,所述获取所述一组初始参数值对应的功放效率,包括:
在基于所述对信号分解参数组设置的一组初始参数值进行信号放大处理的过程中,获取取样的输入信号对应的瞬时功放效率;
所述分别基于确定出的每组参数值,进行信号放大处理,并获取每组参数值对应的功放效率,包括:
分别基于确定出的每组参数值,进行信号放大处理,分别在基于每组参数值进行信号放大处理的过程中,获取所述取样的输入信号对应的瞬时功放效 率。
结合第二方面的第一种可能实现方式,在第二方面的第三种可能实现方式中,所述获取所述一组初始参数值对应的功放效率,包括:
在基于所述对信号分解参数组设置的一组初始参数值进行信号放大处理的过程中,获取信号放大处理过程所使用的时间段内的平均功放效率;
所述分别基于确定出的每组参数值,进行信号放大处理,并获取每组参数值对应的功放效率,包括:
分别基于确定出的每组参数值,进行信号放大处理,分别在基于每组参数值进行信号放大处理的过程中,获取信号放大处理过程所使用的时间段内的平均功放效率。
结合第二方面,在第二方面的第四种可能实现方式中,所述获取每组参数值对应的功放效率,包括:
获取基于每组参数值进行信号放大处理的功放电流和输出功率,根据所述功放电流、所述输出功率和预先设置的功放电压,确定对应的功放效率。
第三方面,提供了一种基站,所述基站包括处理器和存储器,其中:
所述处理器,用于对信号分解参数组设置多组参数值,分别基于每组参数值,进行信号放大处理,并获取每组参数值对应的功放效率;
所述处理器,还用于获取所述每组参数值对应的功放效率中的最大的功放效率对应的一组参数值,存储在所述存储器中;
所述处理器,还用于将所述信号分解参数组设置为最大的功放效率对应的一组参数值。
本发明实施例提供的技术方案带来的有益效果是:
本发明实施例中,对应信号分解参数设置多组参数值,分别基于每组参数值,进行信号放大处理,并获取每组参数值对应的功放效率,根据每组参数值对应的功放效率,获取对应的功放效率最大的一组参数值,将信号分解参数设置为获取的参数值,通过将多组参数值中最大的功放效率对应的一组参数值,设置为信号分解参数组的参数值,使得通信系统中基站的发射机的功放效率保持最大,即使基站的功率放大器受到外界环境的影响,也可以通过上述方式将发射机的功放效率调整到最佳,从而,可以提高功放效率。
附图说明
为了更清楚地说明本发明实施例中的技术方案,下面将对实施例描述中所需要使用的附图作简单地介绍,显而易见地,下面描述中的附图仅仅是本发明的一些实施例,对于本领域普通技术人员来讲,在不付出创造性劳动的前提下,还可以根据这些附图获得其他的附图。
图1是本发明实施例提供的一种信号放大处理的方法流程图;
图2是本发明实施例提供的一种发射机的电路连接示意图;
图3是本发明实施例提供的一种信号分解器件的结构示意图;
图4是本发明实施例提供的一种信号放大处理的装置结构示意图;
图5是本发明实施例提供的一种基站的结构示意图。
具体实施方式
为使本发明的目的、技术方案和优点更加清楚,下面将结合附图对本发明实施方式作进一步地详细描述。
实施例一
本发明实施例提供了一种信号放大处理的方法,如图1所示,本发明实施例提供的技术方案适用于可以采用异构网组网方式的各类通信系统,例如,宽带码分多址(Wideband Code Division Multiple Access,WCDMA)系统,时分同步码分多址(Time Division-Synchronous Code Division Multiple Access,TD-SCDMA)系统,长期演进(Long-Term Evolution,LTE)系统以及LTE后续演进的通信系统。该信号放大处理的方法的执行主体可以是上述通信系统中基站的发射机,本发明实施例涉及的基站可以是WCDMA或TD-SCDMA系统中的节点B(Node-B),也可以是LTE通信系统中的演进型节点B(e-NodeB,evolved NodeB)或者LTE后续演进的通信系统中的类似基站设备,本发明实施例涉及的发射机可以是任意包含有信号放大器和信号发射功能的发射机。
该方法的处理流程可以包括如下的步骤:
步骤101,发射机对信号分解参数组设置多组参数值,分别基于每组参数值,进行信号放大处理,并获取每组参数值对应的功放效率。
步骤102,发射机获取每组参数值对应的功放效率中的最大的功放效率对应的一组参数值。
步骤103,发射机将最大的功放效率对应的一组参数值设置为信号分解参数组的参数值。
本发明实施例中,发射机对信号分解参数组设置多组参数值,分别基于每组参数值,进行信号放大处理,并获取每组参数值对应的功放效率,获取每组参数值对应的功放效率中的最大的功放效率对应的一组参数值,将最大的功放效率对应的一组参数值设置为信号分解参数组的参数值,通过将多组参数值中最大的功放效率对应的一组参数值,设置为信号分解参数组的参数值,使得通信系统中基站的发射机的功放效率保持最大,即使基站的功率放大器受到外界环境的影响,也可以通过上述方式将发射机的功放效率调整到最佳,从而,可以提高功放效率。
实施例二
下面将结合具体实施方式,对图1所示的处理流程进行详细的说明,内容可以如下:
步骤101,发射机对信号分解参数组设置多组参数值,分别基于每组参数值,进行信号放大处理,并获取每组参数值对应的功放效率。
在实施中,如图2所示,发射机中包含有功率放大器,用于对信号的功率进行放大,功率放大器可以多种多样,例如单输入的功率放大器、多输入功率放大器(即功率放大器的输入端设置有多个信号输入端口),由于多输入功率放大器在性能方面较单输入功率放大器有明显的优势,因此,发射机中的功率放大器通常采用多输入功率放大器,如双输入功率放大器,对于多输入功率放大器,由于其输入端口有多个,因此,就需要使用信号分解器件将一个输入信号分解成多个分解信号,信号分解器件对输入信号进行分解的过程,通常是通过预先设置的分解算法进行,该分解算法中设置有多个信号分解参数(可以称为信号分解参数组),如a、b、c、d和e五个信号分解参数,该五个信号分解参数可以构成一个信号分解参数组,通过为信号分解参数组设置不同的参数值的方式,可以对分解算法进行调整,使其分解出多种不同的分解信号,然后,可以将每个分解信号从一个输入端口输入到多输入功率放大器中,进行信号放大处理。
上述信号分解器件的原理图可以如图3所示,其中,LUT1和LUT2可以为两个查找表,该查找表可以由用户根据实际情况设定,查找表的输入通常为输入信号的包络,不同的查找表内容对应了不同的分解信号,可以假设g1=LUT1(x),g2=LUT2(x),其中,x为输入信号,可以定义差模函数y(x)= sqrt(g1(x)/g2(x)),由于差模函数包含两路输出信号之间的振幅与相位的关系,因此,差模函数与功放效率直接相关,可以认为上述差模函数对应的算法即为信号分解器件中的信号分解算法,这样,差模函数中可以包括多个信号分解参数。
发射机可以使用多输入功率放大器,将输入信号进行信号放大处理,具体地,可以将调制后的信号作为输入信号,传输给信号分解器件,用户或技术人员可以对信号分解参数组预先设置多组参数值,可以将信号分解器件分别设置不同的参数值,当输入信号输入到信号分解器件后,通过信号分解器件中的参数值,可以输出不同的分解信号,可以将每个分解信号传输到功率放大器中,经过相应的功率放大处理后,输出处理后的信号,该信号经过耦合器的耦合后,可以计算或测量输出功率,此时,可以计算或测量每组参数值对应的功放效率。
可选地,上述获取每组参数值对应的功放效率的处理方式可以多种多样,以下提供一种可选的处理方式,具体可以包括以下内容:获取基于每组参数值进行信号放大处理的功放电流和输出功率,根据功放电流、输出功率和预先设置的功放电压,确定对应的功放效率。
在实施中,发射机得到信号放大处理后的输出信号后,可以测量输出信号的输出功率和多输入功率放大器中的功放电流,多输入功率放大器的功放电压通常为固定值,如28伏、50伏等,这样,可以使用功放电流和功放电压的乘积,计算多输入功率放大器的直流功率,然后,可以使用输出功率除以计算出的多输入功率放大器的直流功率,得到每组参数值对应的功放效率。
可选地,上述步骤101的处理方式可以多种多样,以下提供一种可选的处理方式,具体可以包括以下步骤:
步骤一,基于对信号分解参数组设置的一组初始参数值,进行信号放大处理,取样多个具有不同功率的输入信号,获取每个输入信号对应的分解信号,得到多个由输入信号和对应的分解信号组成的信号组,并获取上述一组初始参数值对应的功放效率。
在实施中,可以为信号分解参数组设置一组初始参数值,可以将该组初始参数值设置在信号分解器件中,通常,信号分解器件的输入信号的功率在一定的功率范围内,如0dBFS~-30dBFS,对应的功放输出功率为0dBm~30dBm,当输入信号输入到信号分解器件后,可以通过信号分解器件将输入信号进行分解,同时,信号分解器件可以对该输入信号进行取样,得到多个具有不同功率 的输入信号,如0dBFS、-5dBFS、-10dBFS、-15dBFS、-20dBFS、-25dBFS和-30dBFS的输入信号,其中,取样得到的不同功率的输入信号的个数大于或等于信号分解参数组中包含的信号分解参数的个数,然后,发射机可以分别获取每个输入信号对应的分解信号,可以将取样得到的任意一个输入信号和该输入信号对应的分解信号组成一个信号组,例如,发射机中的功率放大器为包络跟踪功率放大器,功放输出信号的功率为30dBm,对应的数字域功率为0dBFS,则分解信号可以包括17dBm的射频信号对应的数字信号和18V功放电压的控制信号。因此,得到的信号组可以表示为[30dBm,(17dBm,18V)]所对应的数字信号组。输入信号经过信号分解器件处理后,发射机可以将每个分解信号分别通过功率放大器所对应的输入端口,输入到功率放大器中进行功率放大,经过耦合器的耦合后,得到输出信号。此时,可以测量输出信号的输出功率,并测量功率放大器的功放电流,发射机可以通过功放电流与预先设置的功放电压,计算功率放大器的直流功率,可以使用输出功率除以计算得到的功率放大器的直流功率,进而得到功放效率,可以作为该组参数值对应的功放效率。
可选地,上述获取一组初始参数值对应的功放效率的处理过程,可以多种多样,以下提供两种可选的处理方式,具体可以以下内容:
方式一,在基于对信号分解参数组设置的一组初始参数值进行信号放大处理的过程中,获取取样的输入信号对应的瞬时功放效率。
在实施中,可以获取每个输入信号对应的瞬时功放效率,具体地,发射机的信号分解器件中所使用的信号分解参数组可以具有一组初始参数值,发射机可以通过相应的处理器件将输入信号进行DPD(Digital Pre-Distortion,数字预失真)校正或者预失真处理,然后进行信号放大处理,其中,通过上述方式得到的输出信号与进行DPD校正或预失真处理之前的输入信号相同,在上述情况下,可以测量某一个或多个输入信号对应的瞬时输出功率,并测量功率放大器的瞬时功放电流,进而通过预先设置的功放电压,得到每个输入信号对应的瞬时功放效率。
方式二,在基于对信号分解参数设置的一组初始参数值进行信号放大处理的过程中,获取信号放大处理过程所使用的时间段内的平均功放效率。
在实施中,为了简化获取某一组参数值对应的功放效率的处理流程,还可以获取进行信号放大处理过程中所使用的时间段内的平均功放效率,具体地,技术人员可以为发射机的信号分解器件中所使用的信号分解参数组设置一组 初始参数值,发射机可以将输入信号通过设置有初始参数值的信号分解器件进行信号分解,进而对分解信号进行信号放大处理,然后,测量进行信号放大处理的过程中所使用的时间段内功率放大器的平均功放电流与平均输出功率,进而,计算每组参数值在信号放大处理的过程中所使用的时间段内的平均功放效率。
步骤二,按照模式搜索算法,对得到的多个信号组中的至少一个信号组中的分解信号进行调整,对于每次调整,根据进行调整后的多个信号组,确定信号分解参数组的一组参数值。
在实施中,发射机得到多个信号组后,可以使用如模式搜索算法等对多个信号组进行调整,具体地,以上述差模函数的方式为例,假设信号组分别为(x0,y0)、(x1,y1)、(x2,y2),其中,x0、x1、x2表示不同功率的输入信号,y0、y1、y2表示分解信号,则通过模式搜索算法对上述信号组进行调整,得到调整后的信号组可以为(x0,y0+d)、(x1,y1)、(x2,y2),(x0,y0-d)、(x1,y1)、(x2,y2),(x0,y0)、(x1,y1+d)、(x2,y2),(x0,y0)、(x1,y1-d)、(x2,y2),(x0,y0)、(x1,y1)、(x2,y2+d),(x0,y0)、(x1,y1)、(x2,y2-d)等,其中,d可以为对分解信号进行调整时的步长,d的取值可以由用户根据实际情况进行设置,这样,通过模式搜索算法对多个信号组进行调整后,可以得到调整后的多个信号组,如(x0,y0+d)、(x1,y1)、(x2,y2),通过多个信号组,以及上述差模函数对应的算法,得到由多个方程组成的方程组,求解该方程组,可以得到一组参数值,则上述示例中包括六次调整,通过每次调整得到的信号组,可以计算得到一组参数值,这样,会得到六组参数值。
步骤三,分别基于确定出的每组参数值,进行信号放大处理,并获取每组参数值对应的功放效率。
在实施中,可以将上述步骤二中得到的多组参数值依次设置在信号分解器件中,发射机可以将输入信号,传输给信号分解器件进行信号分解,进而将分解信号输入到功率放大器中进行功率放大,经过耦合器耦合后,可以通过上述计算功放效率的方法,计算每组参数值对应的功放效率,具体处理方式可以参见上述相关内容,在此不再赘述。
可选地,对于上述方式一的情况,上述步骤三的处理方式可以包括以下内容:分别基于确定出的每组参数值,进行信号放大处理,分别在基于每组参数值进行信号放大处理的过程中,获取取样的输入信号对应的瞬时功放效率。
在实施中,对于得到的多组参数值中的任一组参数值,发射机可以获取取样的多个输入信号中的某个输入信号对应的瞬时功放效率,或者,可以分别获取取样的多个输入信号中的每个输入信号对应的功放效率,相关处理过程可以参见上述相关内容,在此不再赘述。
可选地,对于上述方式二的情况,上述步骤三的处理方式可以包括以下内容:分别基于确定出的每组参数值,进行信号放大处理,分别在基于每组参数值进行信号放大处理的过程中,获取信号放大处理过程所使用的时间段内的平均功放效率。
在实施中,对于得到的多组参数值中的任一组参数值,进行信号放大处理后,可以获取该组参数值进行信号放大处理过程中所使用的时间段内的平均功放效率,相关的处理过程可以参见上述相关内容,在此不再赘述。需要说明的是,计算平均功放效率时,输出信号的平均输出功率是在其达到稳定时测量的,而且要求每组参数值对应的平均输出功率均相同,如果某组参数值对应的平均输出功率与其它组参数值对应的平均输出功率不同,则使用该组参数值重新进行信号放大处理过程,得到平均输出功率,继续进行上述判断过程,直到该组参数值对应的平均输出功率与其它组参数值对应的平均输出功率相同。
可见,对于平均功放效率的情况,需要每组参数值对应的平均输出功率和输出信号保持稳定,而且,每组参数值对应的平均输出功率保持相同,在实验室的条件下,上述要求可以满足,但是,在实际应用中,输入信号和/或输出信号为实际业务信号,上述要求将很难满足,而对于瞬时功放效率的情况,由于输出功率和功放电流都是实时测量的,因此,上述要求可以得到放松,而且,信号的收敛速度也会更快。
步骤102,发射机获取每组参数值对应的功放效率中的最大的功放效率对应的一组参数值。
在实施中,发射机可以通过上述方式,计算得到每组参数值对应的功放效率,发射机可以将上述功放效率进行对比,从中查找到最大的功放效率,然后,可以确定最大的功放效率对应的一组参数值。
对于上述方式一的情况,例如,调整后的信号组可以为(x0,y0+d)、(x1,y1)、(x2,y2),通过上述差模函数,计算出一组参数值,发射机可以将该组参数值设置在上述信号分解器件中,然后对输入信号进行信号放大处理,获取输入信号为x0时的功放效率P1,如果设置的一组初始参数值的情况下,输入 信号为x0时的功放效率为P0,若P1大于P0,则按照模式搜索算法继续调整信号组中的分解信号,如(x0,y0+2d)、(x1,y1)、(x2,y2),继续执行上述过程,得到输入信号为x0时的功放效率P2,若P1大于P2,则发射机可以确定输入信号为x0时功放效率最大,即为P1,相应的信号组为(x0,y0+d)。发射机可以使用相同的处理方式,继续确定输入信号为x1或x2时最大的功放效率,并分别确定其对应的信号组,例如(x1,y1+2d)、(x2,y2-d),则发射机可以使用信号组(x0,y0+d)、(x1,y1+2d)、(x2,y2-d),通过上述差模函数,计算出一组参数值。
对于上述方式二的情况,发射机可以在每组参数值对应的平均功放效率中进行查找,得到平均功放效率的最大值,可以获取该最大值对应的一组参数值。
步骤103,发射机将最大的功放效率对应的一组参数值设置为信号分解参数组的参数值。
在实施中,当发射机获取到上述最大的功放效率对应的一组参数值后,可以将上述参数值设置在信号分解器件中,进而,发射机可以通过该组参数值,进行信号放大处理,然后,发射机可以基于当前使用的一组参数值,对输入信号继续进行上述步骤101~步骤103的处理过程。
本发明实施例中,对信号分解参数组设置多组参数值,分别基于每组参数值,进行信号放大处理,并获取每组参数值对应的功放效率,获取每组参数值对应的功放效率中的最大的功放效率对应的一组参数值,将最大的功放效率对应的一组参数值设置为信号分解参数组的参数值,通过将多组参数值中最大的功放效率对应的一组参数值,设置为信号分解参数组的参数值,使得通信系统中基站的发射机的功放效率保持最大,即使基站的功率放大器受到外界环境的影响,也可以通过上述方式将发射机的功放效率调整到最佳,从而,可以提高功放效率。
实施例三
基于相同的技术构思,本发明实施例还提供了一种信号放大处理的装置,该装置可以应用于采用异构网组网方式的各类通信系统,例如,宽带码分多址系统、时分同步码分多址系统、长期演进系统以及长期演进系统后续演进的通信系统。该装置可以作为上述通信系统中基站中的具有信号发射功能的发射机等,该装置也可以被用作任何需要实现信号放大和信号发射功能的装置,如图 4所示,该装置包括:
第一获取模块410,用于对信号分解参数组设置多组参数值,分别基于每组参数值,进行信号放大处理,并获取每组参数值对应的功放效率;
第二获取模块420,用于获取每组参数值对应的功放效率中的最大的功放效率对应的一组参数值;
设置模块430,用于将最大的功放效率对应的一组参数值设置为信号分解参数组的参数值。
可选地,第一获取模块410,还用于:
基于对信号分解参数组设置的一组初始参数值,进行信号放大处理,取样多个具有不同功率的输入信号,获取每个输入信号对应的分解信号,得到多个由输入信号和对应的分解信号组成的信号组,并获取上述一组初始参数值对应的功放效率;
按照模式搜索算法,对得到的多个信号组中的至少一个信号组中的分解信号进行调整,对于每次调整,根据进行调整后的多个信号组,确定信号分解参数组的一组参数值;
分别基于确定出的每组参数值,进行信号放大处理,并获取每组参数值对应的功放效率。
可选地,第一获取模块410,用于:
在基于对信号分解参数组设置的一组初始参数值进行信号放大处理的过程中,获取取样的输入信号对应的瞬时功放效率;
第一获取模块410,用于:
分别基于确定出的每组参数值,进行信号放大处理,分别在基于每组参数值进行信号放大处理的过程中,获取取样的输入信号对应的瞬时功放效率。
可选地,第一获取模块410,用于:
在基于对信号分解参数组设置的一组初始参数值进行信号放大处理的过程中,获取信号放大处理过程所使用的时间段内的平均功放效率;
第一获取模块410,用于:
分别基于确定出的每组参数值,进行信号放大处理,分别在基于每组参数值进行信号放大处理的过程中,获取信号放大处理过程所使用的时间段内的平均功放效率。
可选地,第一获取模块410,用于:
获取基于每组参数值进行信号放大处理的功放电流和输出功率,根据功放电流、输出功率和预先设置的功放电压,确定对应的功放效率。
本发明实施例中,对信号分解参数组设置多组参数值,分别基于每组参数值,进行信号放大处理,并获取每组参数值对应的功放效率,获取每组参数值对应的功放效率中的最大的功放效率对应的一组参数值,将最大的功放效率对应的一组参数值设置为信号分解参数组的参数值,通过将多组参数值中最大的功放效率对应的一组参数值,设置为信号分解参数组的参数值,使得通信系统中基站的发射机的功放效率保持最大,即使基站的功率放大器受到外界环境的影响,也可以通过上述方式将发射机的功放效率调整到最佳,从而,可以提高功放效率。
需要说明的是:上述实施例提供的信号放大处理的装置在进行信号放大处理时,仅以上述各功能模块的划分进行举例说明,实际应用中,可以根据需要而将上述功能分配由不同的功能模块完成,即将发射机的内部结构划分成不同的功能模块,以完成以上描述的全部或者部分功能。另外,上述实施例提供的信号放大处理的装置与信号放大处理的方法实施例属于同一构思,其具体实现过程详见方法实施例,这里不再赘述。
实施例四
请参考图5,其示出了本发明实施例所涉及的基站结构示意图,该基站可以用于实施上述实施例中提供的信号放大处理的方法,该基站可以采用异构网组网方式的各类通信系统中的基站,其中,各类通信系统可以为宽带码分多址系统、时分同步码分多址系统、长期演进系统以及长期演进系统后续演进的通信系统等。具体来讲:
基站包括:接收器510,处理器520,发送器530和存储器540,接收器510、发送器530和存储器540分别与处理器520相连接,
处理器520,用于对信号分解参数组设置多组参数值,分别基于每组参数值,进行信号放大处理,并获取每组参数值对应的功放效率;
处理器520,还用于获取每组参数值对应的功放效率中的最大的功放效率对应的一组参数值,存储在存储器540中;
处理器520,还用于将最大的功放效率对应的一组参数值设置为信号分解参数组的参数值。
可选地,处理器520,用于:
基于对信号分解参数组设置的一组初始参数值,进行信号放大处理,取样多个具有不同功率的输入信号,获取每个输入信号对应的分解信号,得到多个由输入信号和对应的分解信号组成的信号组,并获取上述一组初始参数值对应的功放效率;
按照模式搜索算法,对得到的多个信号组中的至少一个信号组中的分解信号进行调整,对于每次调整,根据进行调整后的多个信号组,确定信号分解参数组的一组参数值;
分别基于确定出的每组参数值,进行信号放大处理,并获取每组参数值对应的功放效率。
可选地,处理器520,用于:
在基于对信号分解参数组设置的一组初始参数值进行信号放大处理的过程中,获取取样的输入信号对应的瞬时功放效率;
分别基于确定出的每组参数值,进行信号放大处理,分别在基于每组参数值进行信号放大处理的过程中,获取取样的输入信号对应的瞬时功放效率。
可选地,处理器520,用于:
在基于对信号分解参数组设置的一组初始参数值进行信号放大处理的过程中,获取信号放大处理过程所使用的时间段内的平均功放效率;
分别基于确定出的每组参数值,进行信号放大处理,分别在基于每组参数值进行信号放大处理的过程中,获取信号放大处理过程所使用的时间段内的平均功放效率。
可选地,处理器520,用于:
获取基于每组参数值进行信号放大处理的功放电流和输出功率,根据功放电流、输出功率和预先设置的功放电压,确定对应的功放效率。
本发明实施例中,对信号分解参数组设置多组参数值,分别基于每组参数值,进行信号放大处理,并获取每组参数值对应的功放效率,获取每组参数值对应的功放效率中的最大的功放效率对应的一组参数值,将最大的功放效率对应的一组参数值设置为信号分解参数组的参数值,通过将多组参数值中最大的功放效率对应的一组参数值,设置为信号分解参数组的参数值,使得通信系统中基站的发射机的功放效率保持最大,即使基站的功率放大器受到外界环境的影响,也可以通过上述方式将发射机的功放效率调整到最佳,从而,可以提高 功放效率。
本领域普通技术人员可以理解实现上述实施例的全部或部分步骤可以通过硬件来完成,也可以通过程序来指令相关的硬件完成,所述的程序可以存储于一种计算机可读存储介质中,上述提到的存储介质可以是只读存储器,磁盘或光盘等。
以上所述仅为本发明的较佳实施例,并不用以限制本发明,凡在本发明的精神和原则之内,所作的任何修改、等同替换、改进等,均应包含在本发明的保护范围之内。

Claims (11)

  1. 一种信号放大处理的装置,其特征在于,所述装置包括:
    第一获取模块,用于对信号分解参数组设置多组参数值,分别基于每组参数值,进行信号放大处理,并获取每组参数值对应的功放效率;
    第二获取模块,用于获取所述每组参数值对应的功放效率中的最大的功放效率对应的一组参数值;
    设置模块,用于将所述最大的功放效率对应的一组参数值设置为信号分解参数组的参数值。
  2. 根据权利要求1所述的装置,其特征在于,所述第一获取模块,还用于:
    基于对信号分解参数组设置的一组初始参数值,进行信号放大处理,取样多个具有不同功率的输入信号,获取每个输入信号对应的分解信号,得到多个由输入信号和对应的分解信号组成的信号组,并获取所述一组初始参数值对应的功放效率;
    按照模式搜索算法,对得到的多个信号组中的至少一个信号组中的分解信号进行调整,对于每次调整,根据进行调整后的多个信号组,确定信号分解参数组的一组参数值;
    分别基于确定出的每组参数值,进行信号放大处理,并获取每组参数值对应的功放效率。
  3. 根据权利要求2所述的装置,其特征在于,所述第一获取模块,用于:
    在基于所述对信号分解参数组设置的一组初始参数值进行信号放大处理的过程中,获取取样的输入信号对应的瞬时功放效率;
    所述第一获取模块,用于:
    分别基于确定出的每组参数值,进行信号放大处理,分别在基于每组参数值进行信号放大处理的过程中,获取所述取样的输入信号对应的瞬时功放效率。
  4. 根据权利要求2所述的装置,其特征在于,所述第一获取模块,用于:
    在基于所述对信号分解参数组设置的一组初始参数值进行信号放大处理的过程中,获取信号放大处理过程所使用的时间段内的平均功放效率;
    所述第一获取模块,用于:
    分别基于确定出的每组参数值,进行信号放大处理,分别在基于每组参数值进行信号放大处理的过程中,获取信号放大处理过程所使用的时间段内的平 均功放效率。
  5. 根据权利要求1所述的装置,其特征在于,所述第一获取模块,用于:
    获取基于每组参数值进行信号放大处理的功放电流和输出功率,根据所述功放电流、所述输出功率和预先设置的功放电压,确定对应的功放效率。
  6. 一种信号放大处理的方法,其特征在于,所述方法包括:
    对信号分解参数组设置多组参数值,分别基于每组参数值,进行信号放大处理,并获取每组参数值对应的功放效率;
    获取所述每组参数值对应的功放效率中的最大的功放效率对应的一组参数值;
    将所述最大的功放效率对应的一组参数值设置为信号分解参数组的参数值。
  7. 根据权利要求6所述的方法,其特征在于,所述对信号分解参数组设置多组参数值,分别基于每组参数值,进行信号放大处理,并获取每组参数值对应的功放效率,包括:
    基于对信号分解参数组设置的一组初始参数值,进行信号放大处理,取样多个具有不同功率的输入信号,获取每个输入信号对应的分解信号,得到多个由输入信号和对应的分解信号组成的信号组,并获取所述一组初始参数值对应的功放效率;
    按照模式搜索算法,对得到的多个信号组中的至少一个信号组中的分解信号进行调整,对于每次调整,根据进行调整后的多个信号组,确定信号分解参数组的一组参数值;
    分别基于确定出的每组参数值,进行信号放大处理,并获取每组参数值对应的功放效率。
  8. 根据权利要求7所述的方法,其特征在于,所述获取所述一组初始参数值对应的功放效率,包括:
    在基于所述对信号分解参数组设置的一组初始参数值进行信号放大处理的过程中,获取取样的输入信号对应的瞬时功放效率;
    所述分别基于确定出的每组参数值,进行信号放大处理,并获取每组参数值对应的功放效率,包括:
    分别基于确定出的每组参数值,进行信号放大处理,分别在基于每组参数 值进行信号放大处理的过程中,获取所述取样的输入信号对应的瞬时功放效率。
  9. 根据权利要求7所述的方法,其特征在于,所述获取所述一组初始参数值对应的功放效率,包括:
    在基于所述对信号分解参数组设置的一组初始参数值进行信号放大处理的过程中,获取信号放大处理过程所使用的时间段内的平均功放效率;
    所述分别基于确定出的每组参数值,进行信号放大处理,并获取每组参数值对应的功放效率,包括:
    分别基于确定出的每组参数值,进行信号放大处理,分别在基于每组参数值进行信号放大处理的过程中,获取信号放大处理过程所使用的时间段内的平均功放效率。
  10. 根据权利要求6所述的方法,其特征在于,所述获取每组参数值对应的功放效率,包括:
    获取基于每组参数值进行信号放大处理的功放电流和输出功率,根据所述功放电流、所述输出功率和预先设置的功放电压,确定对应的功放效率。
  11. 一种基站,其特征在于,所述基站包括处理器和存储器,其中:
    所述处理器,用于对信号分解参数组设置多组参数值,分别基于每组参数值,进行信号放大处理,并获取每组参数值对应的功放效率;
    所述处理器,还用于获取所述每组参数值对应的功放效率中的最大的功放效率对应的一组参数值,存储在所述存储器中;
    所述处理器,还用于将所述信号分解参数组设置为最大的功放效率对应的一组参数值。
PCT/CN2015/070518 2015-01-12 2015-01-12 信号放大处理的方法和装置 WO2016112483A1 (zh)

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