WO2018137184A1 - 一种信号处理方法及设备 - Google Patents

一种信号处理方法及设备 Download PDF

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Publication number
WO2018137184A1
WO2018137184A1 PCT/CN2017/072651 CN2017072651W WO2018137184A1 WO 2018137184 A1 WO2018137184 A1 WO 2018137184A1 CN 2017072651 W CN2017072651 W CN 2017072651W WO 2018137184 A1 WO2018137184 A1 WO 2018137184A1
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Prior art keywords
signal
analog
signals
frequency
frequency bands
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PCT/CN2017/072651
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English (en)
French (fr)
Inventor
殷潜
肖宇翔
朱尔霓
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华为技术有限公司
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Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to BR112019015265A priority Critical patent/BR112019015265A2/pt
Priority to EP17894620.8A priority patent/EP3567735A4/en
Priority to PCT/CN2017/072651 priority patent/WO2018137184A1/zh
Priority to CN201780084449.2A priority patent/CN110199483B/zh
Publication of WO2018137184A1 publication Critical patent/WO2018137184A1/zh
Priority to US16/521,598 priority patent/US10742240B2/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • 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
    • H04B1/0003—Software-defined radio [SDR] systems, i.e. systems wherein components typically implemented in hardware, e.g. filters or modulators/demodulators, are implented using software, e.g. by involving an AD or DA conversion stage such that at least part of the signal processing is performed in the digital domain
    • H04B1/0028—Software-defined radio [SDR] systems, i.e. systems wherein components typically implemented in hardware, e.g. filters or modulators/demodulators, are implented using software, e.g. by involving an AD or DA conversion stage such that at least part of the signal processing is performed in the digital domain wherein the AD/DA conversion occurs at baseband stage
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
    • H03F1/02—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/20—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers
    • H03F3/24—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers of transmitter output stages
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • 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
    • H04B1/005—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 adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • 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
    • H04B1/02—Transmitters
    • H04B1/04—Circuits
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • 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
    • H04B1/02—Transmitters
    • H04B1/04—Circuits
    • H04B2001/0408—Circuits with power amplifiers

Definitions

  • the present application relates to the field of communications technologies, and in particular, to a signal processing method and device.
  • a Power Amplifier usually the end of the transmitting link of a base station in a wireless communication system, is an important component of the base station.
  • a base station needs to support services in multiple frequency bands at the same time. Therefore, the base station needs to simultaneously transmit multiple frequency bands by using a multi-band power amplifier (for example, 1.8 gigahertz (GHz) + 2.1 GHz, or 1.8 GHz. +2.1GHz+2.6GHz) signal function.
  • a multi-band power amplifier for example, 1.8 gigahertz (GHz) + 2.1 GHz, or 1.8 GHz. +2.1GHz+2.6GHz
  • a single-input structure of a power amplifier (also known as a single-input power amplifier) requires a compromise between output power, operating efficiency, and signal bandwidth, so output power and efficiency are not high.
  • dual-input power amplifiers (also known as dual-input power amplifiers) increase output power and efficiency.
  • the embodiment of the present application provides a signal processing method and device for obtaining a multi-band signal with high performance when a dual input power amplifier is subjected to amplification processing.
  • an embodiment of the present application provides a signal processing device, where the device includes an analog signal decomposition device and a combining device.
  • the analog signal decomposition device receives at least two Analog RF signals of the frequency bands, and performing nonlinear change processing on the analog RF signals of each of the at least two frequency bands of the analog RF signals according to the analog RF signals of the at least two frequency bands, to obtain the first signal and a second signal;
  • the combining device combines the first signal generated in the analog signal decomposition device, and combines the generated second signal to obtain a spectrum containing the at least two frequency bands Two signals.
  • the two signals obtained after the combining device are also non-linear, so that the two signals are input to the dual input power amplifier.
  • the dual input power amplifier can be optimally operated. Therefore, a multi-band signal having a high performance when the dual input power amplifier is subjected to amplification processing can be obtained by the signal processing apparatus.
  • an analog signal decomposition device is configured to receive an analog RF signal of at least two frequency bands to generate a first signal and a second signal; the first signal and the second signal are based on a simulation of a first frequency band
  • the radio frequency signal is obtained by nonlinear variation, and the first frequency band is any one of the at least two frequency bands; And configured to combine the first signal obtained based on the analog radio frequency signal of the first frequency band with the first signal obtained by using an analog radio frequency signal of other frequency bands, and perform simulation based on the first frequency band
  • the second signal obtained by the radio frequency signal is combined with the second signal obtained by the analog radio frequency signal of the other frequency band to generate two signals, wherein the other frequency bands are the least In a frequency band outside a frequency band, the two channels of signals include the at least two frequency bands.
  • the analog signal decomposition device obtains the first signal and the second signal generated based on an analog radio frequency signal of the first frequency band by envelope detection and controllable nonlinear processing.
  • the analog signal decomposition device comprises: a combiner, an envelope detector, a controllable nonlinear processor, and a multiplier; the analog RF signal in the first frequency band of the analog signal decomposition device
  • the combiner receives the analog RF signals of the at least two frequency bands, and performs combined processing on the analog RF signals of the at least two frequency bands to generate a combined signal
  • the network detector performs envelope detection processing on the combined signal to generate a combined detection signal
  • the controllable nonlinear processor performs nonlinear processing on the combined detection signal according to a nonlinear parameter to generate two-way non- a linear signal
  • the multiplier multiplying the two nonlinear signals by an analog radio frequency signal of the first frequency band to obtain the first signal and the second signal.
  • the signal processing device can obtain the first signal and the second signal having the nonlinear characteristics required by the dual input power amplifier through the analog signal decomposition device, thereby ensuring that the two signals obtained by the subsequent combining process also have The non-linear characteristic, such that the two signals are input to the dual input power amplifier, can achieve the best performance of the dual input power amplifier.
  • the analog signal decomposition device comprises: an envelope detector, a combiner, a controllable nonlinear processor, and a multiplier; the analog RF signal in the first frequency band of the analog signal decomposition device During the nonlinear processing, the envelope detector receives the analog RF signals of the at least two frequency bands, and performs envelope detection processing on the analog RF signals of the at least two frequency bands to generate at least two detection signals.
  • the combiner performs a combined processing on the at least two detection signals to generate a combined detection signal;
  • the controllable nonlinear processor performs nonlinear processing on the combined detection signal according to a nonlinear parameter, Generating two non-linear signals;
  • the multiplier multiplying the two non-linear signals by an analog radio frequency signal of the first frequency band to obtain the first signal and the second signal.
  • the signal processing device can obtain the first signal and the second signal having the nonlinear characteristics required by the dual input power amplifier through the analog signal decomposition device, thereby ensuring that the two signals obtained by the subsequent combining process also have The non-linear characteristic, such that the two signals are input to the dual input power amplifier, can achieve the best performance of the dual input power amplifier.
  • the controllable nonlinear processor may perform nonlinear processing on the combined detection signal according to different nonlinear parameters to generate two nonlinear signals to further optimize the performance of the dual input power amplifier.
  • the nonlinear parameters of the controllable nonlinear processor conform to the nonlinear operating characteristics of the dual input power amplifier.
  • the two nonlinear signals generated by the controllable nonlinear processor include a power amplifier conforming to the dual input power amplifier in each frequency band.
  • the nonlinear characteristics required by the characteristics so that after the two nonlinear signals enter the dual input power amplifier after various processes, accurate load traction is formed, thereby ensuring that the dual input power amplifier can achieve the best Work efficiency and optimal linearity, or achieve a compromise between the two.
  • the signal processing device further includes a frequency conversion device, wherein the frequency conversion device can receive an analog baseband signal of at least two frequency bands, and frequency-convert the analog baseband signals of the at least two frequency bands to generate a An analog RF signal of at least two frequency bands.
  • the signal processing device can obtain an analog radio frequency signal through the frequency conversion device.
  • the signal processing device further includes digital-to-analog conversion means for receiving digital baseband signals of at least two frequency bands, and converting the digital baseband signals of the at least two frequency bands into An analog baseband signal of at least two frequency bands.
  • the signal processing device may first convert the data baseband signals of the at least one frequency band into the at least two by using the digital-to-analog conversion device.
  • the analog baseband signals of the frequency bands enable the frequency conversion device to process the analog baseband signals of the at least two frequency bands to obtain analog RF signals of the at least two frequency bands.
  • the embodiment of the present application further provides a power amplifying device, which includes the signal processing device and the dual input power amplifier in any of the above designs, wherein the dual input power amplifier is The combining device is connected, and after the signal processing device obtains two signals, the two signals are subjected to power amplification processing to generate one radio frequency signal, and the radio frequency signal includes the at least two frequency bands in a frequency spectrum.
  • a power amplifying device which includes the signal processing device and the dual input power amplifier in any of the above designs, wherein the dual input power amplifier is The combining device is connected, and after the signal processing device obtains two signals, the two signals are subjected to power amplification processing to generate one radio frequency signal, and the radio frequency signal includes the at least two frequency bands in a frequency spectrum.
  • the two-input signals obtained by the signal processing device are in accordance with the non-linear characteristics of the power amplifier. Therefore, by using the power amplifying device provided by the embodiment of the present application, the dual input in the power amplifying device can be made.
  • the power amplifier achieves optimum performance and is designed to meet the performance requirements of multi-band RF signals.
  • an embodiment of the present application further provides an analog signal decomposition apparatus, including: an envelope detector and a controllable nonlinear processor; and the envelope detector is configured to include at least two An analog RF signal of the frequency band is subjected to envelope detection; the controllable nonlinear processor is configured to generate two nonlinear signals according to the output of the envelope detector and the nonlinear parameter; the analog signal decomposition device is based on The first RF signal and the two non-linear signals are generated in the first frequency band to generate a first signal and a second signal.
  • the analog signal decomposition device comprises: a combiner, an envelope detector, a controllable nonlinear processor, and a multiplier; and the analog RF signal in the first frequency band of the analog signal decomposition device
  • the combiner receives the analog RF signals of the at least two frequency bands, and combines the analog RF signals of the at least two frequency bands to generate a combined signal
  • the envelope detector performs envelope detection processing on the combined signal to generate a combined detection signal
  • the controllable nonlinear processor performs nonlinear processing on the combined detection signal according to a nonlinear parameter to generate two paths a nonlinear signal
  • the multiplier multiplying the two nonlinear signals by an analog radio frequency signal of the first frequency band to obtain the first signal and the second signal.
  • the signal processing device can obtain the first signal and the second signal with nonlinearities required by the dual input power amplifier through the analog signal decomposition device, thereby ensuring that the two signals obtained by the subsequent combining process are also non- Linear, so that after the two signals are input to the dual input power amplifier, the dual input power amplifier can be optimally operated.
  • the analog signal decomposition device comprises: an envelope detector, a combiner, a controllable nonlinear processor, and a multiplier; and the simulation of the first frequency band by the analog signal decomposition device
  • the envelope detector receives the analog radio frequency signals of the at least two frequency bands, and performs envelope detection processing on the analog radio frequency signals of the at least two frequency bands to generate at least two channels.
  • Detecting signal The road device combines the at least two detection signals to generate a combined detection signal; the controllable nonlinear processor performs nonlinear processing on the combined detection signal according to a nonlinear parameter to generate two paths. a linear signal; the multiplier multiplying the two nonlinear signals by an analog radio frequency signal of the first frequency band to obtain the first signal and the second signal.
  • the signal processing device can obtain the first signal and the second signal having the nonlinear characteristics required by the dual input power amplifier through the analog signal decomposition device, thereby ensuring that the two signals obtained by the subsequent combining process also have The non-linear characteristic, such that the two signals are input to the dual input power amplifier, can achieve the best performance of the dual input power amplifier.
  • controllable nonlinear processor may perform nonlinear processing on the combined detection signal according to different nonlinear parameters to generate two nonlinear signals to further optimize the double Input power amplifier performance.
  • the present application provides a chip system for implementing the apparatus or apparatus described in any of the above aspects or any of the possible designs.
  • the chip system can be composed of chips, and can also include chips and other discrete devices.
  • the chip may be an Application-Specific Integrated Circuit (ASIC) or other form of chip.
  • the chip system may further include a processor for supporting the foregoing device or device to implement the functions involved in the foregoing aspects, for example, acquiring signals and/or parameters involved in the foregoing aspects, and performing the foregoing aspects. Signal processing.
  • the chip system further includes a memory for storing program instructions and data necessary for the digital predistortion processing device.
  • the embodiment of the present application further provides a signal processing method, including: generating a first signal and a second signal according to an analog radio frequency signal of at least two frequency bands, where the first signal and the second signal are based on The analog RF signal of the first frequency band is obtained by nonlinear variation, the first frequency band is any one of the at least two frequency bands; the first signal obtained based on the analog RF signal of the first frequency band is The first signal obtained based on the analog radio frequency signals of the other frequency bands is combined, and the second signal obtained based on the analog radio frequency signals of the first frequency band and the second signal obtained based on the analog radio frequency signals of the other frequency bands are obtained The signals are combined to generate two signals, wherein the other frequency bands are frequency bands other than the first frequency band of the at least two frequency bands, and the two channels of signals include the at least two frequency bands.
  • the generating the first signal and the second signal according to the analog RF signals of the at least two frequency bands comprising: obtaining an analogy based on the first frequency band by using envelope detection and controllable nonlinear processing The first signal and the second signal generated by the radio frequency signal.
  • generating the first signal and the second signal according to the analog RF signals of the at least two frequency bands including: combining the analog RF signals of the at least two frequency bands, Generating a combined signal; performing an envelope detection process on the combined signal to generate a combined detection signal; performing nonlinear processing on the combined detection signal according to a nonlinear parameter to generate two nonlinear signals; The two nonlinear signals are respectively multiplied with the analog RF signals of the first frequency band to obtain the first signal and the second signal.
  • generating the first signal and the second signal according to the analog RF signals of the at least two frequency bands comprising: performing envelope detection processing on the analog RF signals of the at least two frequency bands Generating at least two detection signals; combining the at least two detection signals to generate a combined detection signal; performing nonlinear processing on the combined detection signals according to nonlinear parameters to generate two nonlinear signals And multiplying the two nonlinear signals by the analog RF signals of the first frequency band to obtain the first signal and the second signal.
  • the method before generating the first signal and the second signal according to the analog RF signals of the at least two frequency bands, the method further includes: performing frequency conversion processing on the analog baseband signals of the at least two frequency bands to generate the Analog RF signals for at least two frequency bands.
  • the method before the frequency conversion processing of the at least two frequency band analog baseband signals, the method further comprises: converting the digital baseband signals of the at least two frequency bands into the analog baseband of the at least two frequency bands signal.
  • the method further includes: performing power amplification processing on the two signals to generate one radio frequency signal, where the frequency spectrum of the radio frequency signal includes the at least two frequency bands.
  • the method may be applied to the signal processing device in the above aspect, and may also be applied to other signal processing devices, such as a base station, that need to perform decomposition and/or nonlinear processing on a multi-band signal or a wide-band signal.
  • signal processing devices such as a base station, that need to perform decomposition and/or nonlinear processing on a multi-band signal or a wide-band signal.
  • an embodiment of the present application provides a signal processing device, where the signal processing device has the function of implementing any one of the fifth aspects.
  • the functions may be implemented by hardware or by corresponding software implemented by hardware.
  • the hardware or software includes one or more modules corresponding to the functions described above.
  • the embodiment of the present application provides a computer storage medium for storing computer software instructions used by the signal processing device, which includes a program designed to perform the above aspects.
  • the signal processing device includes an analog signal decomposition device and a combining device, wherein the analog signal decomposition device can perform nonlinear change on the analog RF signal of each of the at least two frequency bands, and generate each based on each a first signal and a second signal obtained by simulating a radio frequency signal of the frequency band; the combining means may obtain a first signal based on an analog radio frequency signal of each of the at least two frequency bands for combining processing, and The analog RF signal of each of the at least two frequency bands obtains the first signal for combining processing, and finally generates two signals of the at least two frequency bands in the spectrum.
  • the analog signal decomposition device Since the analog signal decomposition device generates a first signal and a second signal by nonlinearly changing the analog RF signal of each frequency band, the generated two signals of the first signal and the second signal are respectively combined in each frequency band. Both meet the nonlinear characteristics of the dual input power amplifier, so that after inputting the two signals to the dual input power amplifier, the dual input power amplifier can be optimally operated; in addition, due to the generated two signals
  • the at least two frequency bands are included in the spectrum, that is, the two signals are broadband signals (or multi-band signals).
  • the signal processing device can obtain a multi-band signal that enables the dual input power amplifier to have high performance.
  • FIG. 1 is a structural diagram of a signal processing device according to an embodiment of the present application.
  • FIG. 2 is a structural diagram of another signal processing device according to an embodiment of the present application.
  • FIG. 3 is a structural diagram of an analog signal decomposition apparatus according to an embodiment of the present application.
  • FIG. 4 is a structural diagram of another analog signal decomposition apparatus according to an embodiment of the present application.
  • FIG. 5 is a structural diagram of a plurality of analog signal decomposition apparatuses according to an embodiment of the present application.
  • FIG. 6 is a structural diagram of another multiple analog signal decomposition apparatus according to an embodiment of the present disclosure.
  • FIG. 7 is a schematic structural diagram of a signal processing device according to an embodiment of the present disclosure.
  • FIG. 8 is a schematic structural diagram of another signal processing device according to an embodiment of the present disclosure.
  • FIG. 9 is a structural diagram of a power amplifying device according to an embodiment of the present application.
  • FIG. 10 is a flowchart of a signal processing method according to an embodiment of the present application.
  • FIG. 11 is a flowchart of a power amplifying device according to an embodiment of the present application.
  • the embodiment of the present application provides a signal processing method and device for obtaining a multi-band signal with high performance when a dual input power amplifier is subjected to amplification processing.
  • the method and the device are based on the same inventive concept. Since the principles of the method and the device for solving the problem are similar, the implementation of the device and the method can be referred to each other, and the repeated description is not repeated.
  • the signal processing device or the power amplifying device in the embodiment of the present application may be any network device or user equipment that needs to process the signal or perform power amplification processing on the signal, or may be one or more of the network device or the user equipment.
  • the user equipment referred to in the present application may include various handheld devices having wireless communication functions, in-vehicle devices, wearable devices, computing devices, control devices, or other processing devices connected to the wireless modem, and various forms of user devices ( User Equipment, UE), Mobile Station (MS), Terminal (Terminal) or Terminal Equipment (Terminal Equipment).
  • UEs User Equipments
  • the network side device involved in the present application includes a base station (BS), a network controller, or a mobile switching center, etc., wherein the device that directly communicates with the user equipment through the wireless channel is usually a base station, and the base station may include various a form of a macro base station, a micro base station, a relay station, an access point, or a remote radio unit (RRU), etc., of course, wireless communication with the user equipment may also be another network side device having a wireless communication function.
  • BS base station
  • RRU remote radio unit
  • the name of a device having a base station function may be different, for example, in an LTE network, called an evolved Node B (eNB or eNodeB), at 3G (the In the 3rd Generation, third generation network, it is called Node B and so on.
  • eNB evolved Node B
  • 3G the In the 3rd Generation, third generation network, it is called Node B and so on.
  • the signal processing device includes an analog signal decomposition device and a combining device, wherein the analog signal decomposition device can perform nonlinear change on the analog RF signal of each of the at least two frequency bands, and generate each based on each a first signal and a second signal obtained by simulating a radio frequency signal of the frequency band; the combining means may obtain a first signal based on an analog radio frequency signal of each of the at least two frequency bands for combining processing, and The analog RF signal of each of the at least two frequency bands obtains the first signal for combining processing, and finally generates two signals of the at least two frequency bands in the spectrum.
  • the analog signal decomposition device Since the analog signal decomposition device generates a first signal and a second signal by nonlinearly changing the analog RF signal of each frequency band, the generated two signals of the first signal and the second signal are respectively combined in each frequency band. Both meet the nonlinear characteristics of the dual input power amplifier, so that after inputting the two signals to the dual input power amplifier, the dual input power amplifier can be optimally operated; in addition, due to the generated two signals
  • the at least two frequency bands are included in the spectrum, that is, the two signals are multi-band signals.
  • the signal processing device can obtain a multi-band signal that enables the dual input power amplifier to have high performance.
  • the embodiment of the present application provides a signal processing device, where the device includes: an analog signal decomposition device and a combination device, wherein the functions of each device in the signal processing process are:
  • An analog signal decomposition device configured to receive an analog RF signal of at least two frequency bands, to generate a first signal and a second signal; wherein the first signal and the second signal are obtained by nonlinearly changing an analog RF signal in a first frequency band
  • the first frequency band is any one of the at least two frequency bands
  • a combining device configured to combine the first signal obtained based on the analog RF signal of the first frequency band with a first signal obtained based on an analog RF signal of another frequency band, and based on the first frequency band Simulated shot
  • the second signal obtained by the frequency signal is combined with the second signal obtained based on the analog RF signal of the other frequency band to generate two signals, wherein the other frequency bands are the least In a frequency band outside a frequency band, the two channels of signals include the at least two frequency bands.
  • the first signal and the second signal obtained based on the analog radio frequency signal of any frequency band are obtained after the distortion is performed on the analog radio frequency signal of the frequency band, and therefore, the first signal and the second signal are mainly Distributed in this band, there are also a small number of signals distributed on both sides of the band.
  • the analog signal decomposition device may perform nonlinear variation processing based on the analog radio frequency signals of each of the at least two frequency bands to obtain the first signal and the second signal. Since the first signal and the second signal are non-linear, the combining device performs a combining process on the first signal obtained based on the analog radio frequency signals of the at least two frequency bands, and based on the at least The two signals obtained by combining the second signals obtained by the analog RF signals of the two frequency bands are also nonlinear, so that after the two signals are input to the dual input power amplifier, the dual input power amplifier can be achieved. Best work performance.
  • the spectrum of the two signals obtained by the combining device includes the at least two frequency bands, that is, the two signals are multi-band signals, which conforms to the signal nonlinear requirement of the power amplifier for multiple frequency bands.
  • one of the analog signal decomposition devices may perform nonlinear change processing on the analog RF signals in multiple frequency bands, or perform nonlinear change processing on only the analog RF signals in one frequency band. Therefore, one of the analog signal decomposition devices may exist in the signal processing device, or the at least two analog signal decomposition devices may exist, or the number of the analog signals decomposed in a quantity smaller than the number of the at least two frequency bands Device. This embodiment of the present application does not limit this.
  • the signal processing device may perform a combining process on the obtained first signal by using one combining device, and perform a combined processing on the obtained second signal; Or the signal processing device separately performs the combining processing on the obtained first signal and the combining processing on the second signal through two combining devices.
  • the embodiment of the present application provides a schematic structural diagram of two possible signal processing devices, as shown in FIG. 1 and FIG. 2, wherein N shown in the figure is a positive integer greater than or equal to 2.
  • an analog signal decomposition device 101 performs nonlinear change processing on an analog radio frequency signal of each of at least two frequency bands (such as the frequency band 1 to the frequency band N in the figure); the combining device 102 implements the obtained The first signal is combined and processed, and the obtained second signal is combined.
  • N analog signal decomposition means 201 and two combining means 202 there are N analog signal decomposition means 201 and two combining means 202.
  • the analog signal decomposing device 201 performs nonlinear change processing on the analog radio frequency signals of one of the N frequency bands; and one of the two combining devices 202 performs the combined processing on the obtained first signal.
  • Another implementation performs a combined process on the obtained second signal.
  • FIG. 1 and FIG. 2 are only two examples of the structure of the signal processing device provided by the embodiment of the present application, and the signal processing device provided by the embodiment of the present application has other structural forms. Not limited to these two structural forms.
  • the analog signal decomposition device is specifically configured to: when performing nonlinear change processing on the analog RF signal of each frequency band:
  • the first signal and the second signal generated based on the analog radio frequency signals of each of the frequency bands are obtained by envelope detection and controllable nonlinear processing.
  • the analog signal decomposition device can make the generated first signal and the second signal nonlinear.
  • the sampling rate and bandwidth requirements of the signal processing device are very high, so the conventional digital signal decomposition module may not be able to complete the decomposition of the multi-band signal or cause the device cost to be too high.
  • the traditional analog signal decomposition module can not produce the desired amplitude and phase characteristics in each frequency band at the same time, so the traditional analog signal decomposition module can not achieve better signal decomposition effect.
  • the embodiment of the present application also provides two new types of analog signal decomposition devices, as shown in FIG. 3 and FIG.
  • FIG. 3 shows a structure of an analog signal decomposition apparatus provided by an embodiment of the present application.
  • the analog signal decomposition apparatus includes: a combiner 301, an envelope detector 302, and a controllable nonlinear processor. 303, and a multiplier 304.
  • the analog RF signal of the first frequency band (the frequency band 1 in the figure) is nonlinearly changed, and when the first signal and the second signal are obtained, the functions of the above modules are as follows:
  • the combiner 301 is configured to receive analog radio frequency signals of the at least two frequency bands, and perform combined processing on the analog radio frequency signals of the at least two frequency bands to generate a combined signal;
  • the envelope detector 302 is configured to perform an envelope detection process on the combined signal to generate a combined detection signal
  • the controllable nonlinear processor 303 is configured to perform nonlinear processing on the combined detection signal according to a nonlinear parameter to generate two nonlinear signals;
  • the multiplier 304 is configured to multiply the two non-linear signals by an analog radio frequency signal of the first frequency band (ie, a main signal of the analog signal decomposing device) to obtain the first signal and the Said second signal.
  • an analog radio frequency signal of the first frequency band ie, a main signal of the analog signal decomposing device
  • the analog signal decomposition device may generate two nonlinear signals by using one of the controllable nonlinear processors 303, or the analog signal decomposition device may The roadside detection signal is nonlinearly processed to generate two nonlinear signals. This application does not limit this.
  • the analog signal decomposition device may multiply the two nonlinear signals by the analog RF signals in the first frequency band by using a multiplier or two multipliers. This application does not limit this.
  • FIG. 3 is only one possible structural example of the analog signal decomposition device.
  • the combiner 301 may Combining two analog RF signals into a combined signal comprising a plurality of frequency bands; the envelope detector 302 may generate envelope information of the combined signal; the controllable nonlinear processor 303 may generate a dual The nonlinearity required for the input power amplifier.
  • the signal processing device can obtain the first signal and the second signal having nonlinearities required for the dual input power amplifier through the analog signal decomposition device shown in FIG. 3, thereby ensuring two obtained by the subsequent combining process.
  • the path signal is also non-linear, so that after the two signals are input to the dual input power amplifier, the dual input power amplifier can be optimally operated.
  • controllable nonlinear processor 303 uses different nonlinear parameters to perform nonlinear processing on the combined detection signal to generate two nonlinear signals, that is, the two nonlinear signals are respectively
  • the controllable nonlinear processor 303 is generated according to different nonlinear parameters.
  • the different nonlinear parameters are consistent with the nonlinear operating characteristics of the dual input power amplifier, that is, the controllable nonlinear processor 303 can determine the nonlinear operating characteristic of the dual input power amplifier. Different nonlinear parameters. For example, the dual input power amplifier can be traversed to obtain the difference Nonlinear parameters.
  • each of the two non-linear signals generated includes a nonlinear characteristic conforming to the power amplifier characteristic requirement of the dual input power amplifier in each frequency band.
  • accurate load pulling is formed, thereby ensuring that the dual-input power amplifier can achieve optimal working efficiency and optimal linearity. Or achieve a compromise between the two.
  • the signal processing device includes a plurality of analog signal decomposition devices
  • all of the plurality of analog signal decomposition devices adopting the analog signal decomposition device of the structure shown in FIG. 3 are required to pass the double
  • the nonlinear operating characteristics of the power amplifier are input to determine the nonlinear parameters of the controllable nonlinear processor 303 in itself.
  • FIG. 4 shows a structure of another analog signal decomposition apparatus provided by an embodiment of the present application.
  • the analog signal decomposition apparatus includes: an envelope detector 401, a combiner 402, and controllable nonlinear processing.
  • the analog RF signal of the first frequency band (the frequency band 1 in the figure) is nonlinearly changed, and when the first signal and the second signal are obtained, the functions of the above modules are as follows:
  • the envelope detector 401 is configured to receive analog radio frequency signals of the at least two frequency bands, and perform envelope detection processing on the analog radio frequency signals of the at least two frequency bands to generate at least two detection signals;
  • the combiner 402 is configured to combine the at least two detection signals to generate a combined detection signal
  • the controllable nonlinear processor 403 is configured to perform nonlinear processing on the combined detection signal according to different nonlinear parameters to generate two nonlinear signals;
  • the multiplier 404 is configured to multiply the two non-linear signals by an analog radio frequency signal of the first frequency band (ie, a main signal of the analog signal decomposing device) to obtain the first signal and the Said second signal.
  • an analog radio frequency signal of the first frequency band ie, a main signal of the analog signal decomposing device
  • the analog signal decomposition device may generate the at least two detection signals by using an envelope detector 401, or generate the at least two detection signals by using the at least two envelope detectors 401 respectively.
  • the analog signal decomposition device may generate the at least two detection signals by using an envelope detector 401, or generate the at least two detection signals by using the at least two envelope detectors 401 respectively.
  • Each way as shown in Figure 4.
  • the analog signal decomposition device may generate two nonlinear signals by using one of the controllable nonlinear processors 403, or the analog signal decomposition device may use two of the two controllable nonlinear processors 403
  • the roadside detection signal is nonlinearly processed to generate two nonlinear signals. This application does not limit this.
  • the analog signal decomposition device may multiply the two nonlinear signals by the analog RF signals in the first frequency band by using a multiplier or two multipliers. This application does not limit this.
  • Fig. 4 is only one possible structural example of the analog signal decomposition device.
  • the envelope detector 401 can generate Enveloping information of at least two analog radio frequency signals; the combiner 402 may combine the at least two detection signals into a combined detection signal comprising a plurality of frequency bands; the controllable nonlinear processor 403 The nonlinearity required for a dual input power amplifier can be generated.
  • the signal processing device can obtain the first signal and the second signal of the nonlinearity required for the dual input power amplifier through the analog signal decomposition device shown in FIG. 4, thereby ensuring the two obtained by the continuous path processing.
  • the path signal also has a non-linear characteristic such that after the two signals are input to the dual input power amplifier, the dual input power amplifier can be optimally operated.
  • the linear processor 403 Similar to the analog signal decomposition device shown in FIG. 3, two controllable non-control devices in the analog signal decomposition device shown in FIG.
  • the linear processor 403 also uses different nonlinear parameters to perform nonlinear processing on the combined detection signal to generate two nonlinear signals. Since the principle of use is the same, the above description can be borrowed, and details are not described herein again.
  • each of the two non-linear signals generated includes a nonlinearity in accordance with the power amplifier characteristic requirements of the dual input power amplifier in each frequency band, such that After the two non-linear signals enter the dual-input power amplifier after various processes, an accurate load pull is formed, thereby ensuring that the dual-input power amplifier can achieve optimal working efficiency and optimal linearity, or A compromise between the two is achieved.
  • the signal processing device includes a plurality of analog signal decomposition devices
  • all of the plurality of analog signal decomposition devices adopting the analog signal decomposition device of the structure shown in FIG. 4 are required to pass the double
  • the nonlinear operating characteristics of the input power amplifier are determined to determine the nonlinear parameters of the controllable nonlinear processor 403 in itself.
  • the difference between the two structures is that the order of the combining processing and the envelope detection processing is different, that is, the relative positions of the combiner and the envelope detector are different, and therefore, the advantages of the two structures are Each of them is different: the analog signal decomposition device shown in FIG. 3 can realize more accurate nonlinearity and improve the working efficiency of the dual input power amplifier; in the analog signal decomposition device shown in FIG. 4, the detection signal output by the envelope detector is The narrowband signal has low bandwidth requirements for the input matching circuit of the dual input power amplifier.
  • the structure of the analog signal decomposition device in the signal processing device is not limited, and therefore, when the signal processing device includes a plurality of analog signal decomposition devices, the plurality of analog signal decomposition devices
  • the structure shown in FIG. 3 may be used, or the plurality of analog signal decomposition devices may each adopt the structure shown in FIG. 4, or a part of the plurality of analog signal decomposition devices may be as shown in FIG.
  • the other structure is the structure shown in FIG. 4, and other structures having the same functions as those of the analog signal decomposition device shown in FIG. 3 or FIG. 4 may be employed in the plurality of analog signal decomposition devices.
  • the plurality of analog signal decomposition devices in the signal processing device adopt the same structure (that is, the structure shown in FIG. 3 or the structure shown in FIG. 4), since each analog signal decomposition device is combined
  • the signals input and output of the router are the same, and the signals of the input and output of the envelope detector are also the same. Therefore, the plurality of analog signal decomposition devices can share the part including the combiner and the envelope detector. Circuit. In this way, the number of circuit devices in the signal processing device can be saved, and the circuit layout cost can be saved.
  • the structural schematic diagram of the plurality of analog signal decomposition devices is as shown in FIG. 5.
  • the combiner combines the analog RF signals of the plurality of frequency bands to generate a combined signal; the envelope detector performs an envelope detection process on the combined signal to generate a combined detection signal; each analog signal is decomposed
  • the controllable nonlinear processor in the device respectively obtains the combined detection signal for nonlinear processing to generate two nonlinear signals; each analog signal decomposition device passes each of the two nonlinear signals generated by the multiplier The main signals are multiplied to obtain a first signal and a second signal.
  • FIG. 6 a schematic structural diagram of the plurality of analog signal decomposition devices is shown in FIG. 6.
  • a plurality of envelope detectors perform envelope detection processing on the radio frequency signals of the plurality of frequency bands to generate a multi-channel detection signal; the combiner combines the multi-channel detection signals to generate a combined detection signal; each The controllable nonlinear processor in the analog signal decomposition device respectively acquires the combined detection signal for nonlinear processing to generate two non-linear signals
  • the first signal and the second signal are obtained by multiplying the two generated non-linear signals by the respective main signals by a multiplier.
  • the signal processing device or the analog signal decomposition device or the combining device in the signal processing device, may be built by a discrete device or implemented internally by the chip.
  • the embodiment of the present application does not limit this.
  • the signal processing device processes the analog radio frequency signals of the at least two frequency bands. Therefore, when the original signal received by the signal processing device is not the analog RF signal of the at least two frequency bands, the signal processing device further needs to process the original signal to obtain an analog RF of the at least two frequency bands. signal.
  • the signal processing device when the original signal received by the signal processing device is an analog baseband signal of at least two frequency bands, the signal processing device further includes a frequency conversion device.
  • the frequency conversion device is configured to receive the analog baseband signals of the at least two frequency bands, and perform frequency conversion processing on the analog baseband signals of the at least two frequency bands to generate analog radio frequency signals of the at least two frequency bands.
  • the signal processing device may implement frequency conversion processing on the analog baseband signals of the at least two frequency bands by using one of the frequency conversion devices, or implement the frequency conversion of the at least two frequency bands by using the same frequency conversion device as the frequency band
  • the frequency conversion processing of the analog baseband signal is not limited in this application.
  • the signal processing device when the original signal received by the signal processing device is a digital baseband signal of at least two frequency bands, the signal processing device further includes a digital to analog conversion device.
  • the digital-to-analog conversion device is configured to receive digital baseband signals of the at least two frequency bands, and convert the digital baseband signals of the at least two frequency bands into analog baseband signals of the at least two frequency bands, such that The frequency conversion device can process the analog baseband signals of the at least two frequency bands to obtain analog RF signals of the at least two frequency bands.
  • the digital-to-analog conversion device may be a digital analog converter (DAC).
  • DAC digital analog converter
  • the embodiment of the present application provides a signal processing device, where the signal processing device includes an analog signal decomposition device and a combining device, wherein the analog signal decomposition device can perform nonlinearity on an analog RF signal of each of at least two frequency bands. Varying, generating a first signal and a second signal obtained based on an analog radio frequency signal of each frequency band; the combining means may obtain a first signal based on an analog radio frequency signal of each of the at least two frequency bands Processing, and combining the analog RF signals of each of the at least two frequency bands to obtain a first signal for combining processing, and finally generating two signals of the at least two frequency bands in the frequency spectrum.
  • the analog signal decomposition device Since the analog signal decomposition device generates a first signal and a second signal by nonlinearly changing the analog RF signal of each frequency band, the generated two signals of the first signal and the second signal are respectively combined in each frequency band. Both meet the nonlinear characteristics of the dual input power amplifier, so that after inputting the two signals to the dual input power amplifier, the dual input power amplifier can be optimally operated; in addition, due to the generated two signals
  • the at least two frequency bands are included in the spectrum, that is, the two signals are multi-band signals.
  • the signal processing device can obtain a multi-band signal that enables the dual input power amplifier to have high performance.
  • the embodiment of the present application further provides a signal processing device for processing an analog radio frequency signal of two frequency bands.
  • the signal processing device includes two analog signal decomposition devices 701. And two combining devices 702.
  • each analog signal decomposition device 701 receives the analog RF signals of the frequency band 1 and the frequency band 2, and performs nonlinear variation processing based on the analog RF signals of one of the frequency bands respectively, and obtains a frequency change based on the frequency band. a first signal and a second signal obtained by the analog signal;
  • One of the two combining devices 702 combines the first signals generated by the two analog signal decomposition devices 701 to generate one signal; the other combining device 702 combines the two signals
  • the first signal generated by the analog signal decomposition device 701 performs a combining process, and also generates a signal, so that the signal processing device can obtain two multi-band signals including the frequency band 1 and the frequency band 2 in the frequency spectrum.
  • the signal processing device when the original signal obtained by the signal processing device is an analog baseband signal of the frequency band 1 and the frequency band 2, the signal processing device further includes two frequency conversion devices 703, as shown in the figure, each of the frequency conversion devices 703 The analog baseband signals of one frequency band are respectively subjected to frequency conversion processing, thereby obtaining analog RF signals of the corresponding frequency bands.
  • the signal processing device when the original signal obtained by the signal processing device is a digital baseband signal of the frequency band 1 and the frequency band 2, the signal processing device includes not only the two frequency conversion devices 703, but also two digital-to-analog conversion devices 704. As shown in the figure, each digital-to-analog conversion device 704 is configured to respectively perform digital-to-analog conversion processing on a digital baseband signal of one frequency band to obtain an analog baseband signal of the frequency band, and then obtain an analog RF signal of the corresponding frequency band through the frequency conversion device.
  • the embodiment of the present application further provides a signal processing device for processing an analog radio frequency signal of N frequency bands.
  • the signal processing device includes N analog signal decomposition devices 801 . And two combining devices 802, where N is a positive integer greater than two.
  • the signal processing device further includes N frequency conversion devices 803 and N digital to analog conversion devices 804.
  • N is a positive integer greater than two.
  • the embodiment of the present application further provides a power amplifying device, which includes the signal processing device 901 and the dual input power amplifier 902 in the above embodiment, wherein the dual input power amplifier 902 and The signal processing device 901 is connected.
  • a power amplifying device which includes the signal processing device 901 and the dual input power amplifier 902 in the above embodiment, wherein the dual input power amplifier 902 and The signal processing device 901 is connected.
  • the dual-input power amplifier 902 is used for The two signals are subjected to power amplification processing to generate one radio frequency signal, and the radio frequency signal includes the at least two frequency bands in a frequency spectrum.
  • the dual-input power in the power amplifying device can be made by using the power amplifying device provided by the embodiment of the present application, because the two-way signal obtained by the signal processing device meets the nonlinearity of the power amplifier.
  • the amplifier achieves optimum performance and is RF signaled to meet multi-band nonlinearity requirements.
  • the embodiment of the present application further provides a signal processing method, which is applicable to the signal processing device provided in the foregoing embodiment, or other device that needs to process a multi-band signal.
  • the specific process of the method includes the following steps:
  • Step 1001 The signal processing device generates a first signal and a second signal according to the analog radio frequency signals of the at least two frequency bands, where the first signal and the second signal are nonlinearly changed based on the analog RF signal in the first frequency band.
  • the first frequency band is any one of the at least two frequency bands;
  • Step 1002 The signal processing device combines the first signal obtained based on the analog radio frequency signal of the first frequency band with the first signal obtained based on the analog radio frequency signal of other frequency bands, and is based on the first
  • the second signal obtained by simulating the radio frequency signal of one frequency band is combined with the second signal obtained by the analog radio frequency signal of the other frequency band to generate two signals, wherein the other frequency bands are the at least two In the frequency band except the first frequency band, the spectrum of the two signals includes the at least two frequency bands.
  • the signal processing device generates the first signal and the first according to the analog RF signals of the at least two frequency bands.
  • Two signals including:
  • the signal processing device obtains the first signal and the second signal generated based on an analog radio frequency signal of the first frequency band by envelope detection and controllable nonlinear processing.
  • the signal processing device generates the first signal and the second signal according to the analog radio frequency signals of the at least two frequency bands, including:
  • the signal processing device combines the analog RF signals of the at least two frequency bands to generate a combined signal
  • the signal processing device performs envelope detection processing on the combined signal to generate a combined detection signal
  • the signal processing device performs nonlinear processing on the combined detection signal according to a nonlinear parameter to generate two nonlinear signals
  • the signal processing device multiplies the two non-linear signals by an analog radio frequency signal of the first frequency band to obtain the first signal and the second signal.
  • the signal processing device generates the first signal and the second signal according to the analog radio frequency signals of the at least two frequency bands, including:
  • the signal processing device performs envelope detection processing on the analog radio frequency signals of the at least two frequency bands to generate at least two detection signals;
  • the signal processing device combines the at least two detection signals to generate a combined detection signal
  • the signal processing device performs nonlinear processing on the combined detection signal according to different nonlinear parameters to generate two nonlinear signals
  • the signal processing device multiplies the two non-linear signals by an analog radio frequency signal of the first frequency band to obtain the first signal and the second signal.
  • the method further includes:
  • the signal processing device performs frequency conversion processing on the analog baseband signals of the at least two frequency bands to generate analog radio frequency signals of the at least two frequency bands.
  • the method further includes:
  • the signal processing device converts the digital baseband signals of the at least two frequency bands into analog baseband signals of the at least two frequency bands.
  • the signal processing device can perform nonlinear change on the analog RF signal of each of the at least two frequency bands, and generate a first signal and a second signal obtained based on the analog RF signal of each frequency band. And obtaining a first signal for combining the analog RF signals based on each of the at least two frequency bands, and obtaining a first signal based on the analog RF signals of each of the at least two frequency bands The combining process finally generates two signals in the spectrum including the at least two frequency bands. Since the signal processing device generates a first signal and a second signal by nonlinearly changing the analog RF signal of each frequency band, the generated two signals of the first signal and the second signal respectively are combined with the dual input power amplifier.
  • the dual input power amplifier can be optimally operated; and the at least two of the spectrums of the two signals generated are included.
  • the frequency bands, that is, the two signals are multi-band signals.
  • the signal processing device can obtain a multi-band signal with high performance of the dual input power amplifier.
  • the embodiment of the present application further provides a power amplification method, which is applicable to the power amplification device provided by the above embodiments, or other devices that need to perform power amplification processing on multi-band signals.
  • a power amplification method which is applicable to the power amplification device provided by the above embodiments, or other devices that need to perform power amplification processing on multi-band signals.
  • the specific process of the method includes the following steps:
  • Step 1101 The power amplifying device generates a first signal and a second signal according to the analog radio frequency signals of the at least two frequency bands, where the first signal and the second signal are nonlinearly changed based on the analog RF signal in the first frequency band.
  • the first frequency band is any one of the at least two frequency bands;
  • Step 1102 The power amplifying device combines the first signal obtained based on the analog radio frequency signal of the first frequency band with the first signal obtained by using an analog radio frequency signal of other frequency bands, and is based on the first
  • the second signal obtained by simulating the radio frequency signal of one frequency band is combined with the second signal obtained by the analog radio frequency signal of the other frequency band to generate two signals, wherein the other frequency bands are the at least two In the frequency band except the first frequency band, the spectrum of the two signals includes the at least two frequency bands;
  • Step 1103 The power amplifying device performs power amplification processing on the two signals to generate one radio frequency signal, where the frequency spectrum of the radio frequency signal includes the at least two frequency bands.
  • the two-way signal obtained by the signal processing method in the above embodiment is in accordance with the nonlinearity of the power amplifier. Therefore, the dual-input power amplifier in the power amplifying device can be implemented by using the power amplification method provided by the embodiment of the present application. Achieve optimal performance and get RF signals that meet the nonlinear requirements of multi-band signals.
  • the signal processing device includes an analog signal decomposition device and a combining device, wherein the analog signal decomposition device can simulate an RF signal for each of at least two frequency bands. Performing a nonlinear change to generate a first signal and a second signal obtained based on an analog radio frequency signal of each frequency band; the combining means may obtain a first signal based on an analog radio frequency signal of each of the at least two frequency bands Performing a combining process, and combining the analog RF signals of each of the at least two frequency bands to obtain a first signal for combining processing, and finally generating two signals of the at least two frequency bands in the frequency spectrum.
  • the analog signal decomposition device Since the analog signal decomposition device generates a first signal and a second signal by nonlinearly changing the analog RF signal of each frequency band, the generated two signals of the first signal and the second signal are respectively combined in each frequency band. Both meet the nonlinear characteristics of the dual input power amplifier, so that after inputting the two signals to the dual input power amplifier, the dual input power amplifier can be optimally operated; in addition, due to the generated two signals
  • the at least two frequency bands are included in the spectrum, that is, the two signals are broadband signals (or multi-band signals).
  • the signal processing device can obtain a multi-band signal that enables the dual input power amplifier to have high performance.

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Abstract

一种信号处理方法及设备，用以得到使双输入功率放大器在进行放大处理时，工作性能高的多频段信号。所述设备可以通过模拟信号分解装置和合路模块，对至少两个频段上的模拟射频信号进行分解、合路处理后，得到频谱中包含所述至少两个频段的两路多频段信号。所述两路信号符合双输入功率放大器的非线性，因此将所述两路信号输入到双输入功率放大器后，可以使所述双输入功率放大器达到最佳工作性能。

Description

一种信号处理方法及设备 技术领域
本申请涉及通信技术领域，尤其涉及一种信号处理方法及设备。
背景技术
功率放大器(Power Amplifier，PA)，通常是无线通信系统中基站的发射链路的末端，是基站的重要组成部分。
随着通信技术的发展，基站需要同时支持多个频段的业务，因此，所述基站需要利用多频段功率放大器实现同时发射多个频段(例如1.8千兆赫兹(GHz)+2.1GHz，或1.8GHz+2.1GHz+2.6GHz)信号的功能。
目前的功率放大器的类型包括单输入结构和双输入结构。单输入结构的功率放大器(又称单输入功率放大器)由于需要在输出功率、工作效率以及信号带宽之间进行折中，因此，输出功率和工作效率不高。相对于单输入功率放大器，双输入结构的功率放大器(又称双输入功率放大器)可以提高输出功率和工作效率。
由于对多频段信号进行放大的功率放大器需要保证较高的宽带要求，若采用单输入功率放大器处理多频段信号，在满足该宽带要求的前提下，需要牺牲更大的输出功率和工作效率。因此，采用双输入功率放大器是比较理想的选择。那么如何对射频信号进行处理，从而得到可以使双输入功率放大器的输出功率和工作效率达到最优的多频段信号或者宽带信号，是无线通信领域技术人员亟待完成的问题。
发明内容
本申请实施例提供了一种信号处理方法及设备，用以得到使双输入功率放大器在进行放大处理时，工作性能高的多频段信号。
第一方面，本申请实施例提供了一种信号处理设备，该设备包括模拟信号分解装置和合路装置，在所述信号处理设备在进行信号处理过程中，所述模拟信号分解装置，接收至少两个频段的模拟射频信号，并根据所述至少两个频段的模拟射频信号对所述至少两个频段的模拟射频信号中的每个频段的模拟射频信号进行非线性变化处理，得到第一信号和第二信号；所述合路装置将所述模拟信号分解装置中生成的第一信号进行合路处理，并将生成的第二信号进行合路处理，从而得到频谱中包含所述至少两个频段的两路信号。
由于所述第一信号和所述第二信号具有非线性，因此所述合路装置合路处理后得到的两路信号也具有非线性，从而将所述两路信号输入到双输入功率放大器后，可以使所述双输入功率放大器达到最佳工作性能。因此，通过所述信号处理设备可以得到使双输入功率放大器在进行放大处理时工作性能高的多频段信号。
在一个可能的设计中，模拟信号分解装置，用于接收至少两个频段的模拟射频信号，生成第一信号和第二信号；所述第一信号和所述第二信号基于第一频段的模拟射频信号经过非线性变化获得，所述第一频段为所述至少两个频段中的任一频段；合路装 置，用于将基于所述第一频段的模拟射频信号获得的所述第一信号与基于其它频段的模拟射频信号获得的第一信号进行合路处理，并将基于所述第一频段的模拟射频信号获得的所述第二信号与基于所述其它频段的模拟射频信号获得的第二信号进行合路处理，生成两路信号，其中，所述其它频段为所述至少两个频段中除第一频段外的频段，所述两路信号的频谱中包含所述至少两个频段。
在一个可能的设计中，所述模拟信号分解装置通过包络检波和可控非线性处理获得基于所述第一频段的模拟射频信号生成的所述第一信号和所述第二信号。
这样，可以保证所述模拟信号分解装置生成的所述第一信号和所述第二信号具有非线性。
在一个可能的设计中，所述模拟信号分解装置包括：合路器、包络检波器、可控非线性处理器，以及乘法器；在所述模拟信号分解装置对第一频段的模拟射频信号进行非线性处理的过程中，所述合路器接收所述至少两个频段的模拟射频信号，并对所述至少两个频段的模拟射频信号进行合路处理，生成合路信号；所述包络检波器对所述合路信号进行包络检波处理，生成合路检波信号；所述可控非线性处理器根据非线性参数，对所述合路检波信号进行非线性处理，生成两路非线性信号；所述乘法器将所述两路非线性信号分别与所述第一频段的模拟射频信号相乘，得到所述第一信号和所述第二信号。
这样，所述信号处理设备可以通过所述模拟信号分解装置，得到具备双输入功率放大器所需的非线性特征的第一信号和第二信号，从而保证后续合路处理得到的两路信号也具有该非线性特征，从而将所述两路信号输入到双输入功率放大器后，可以使所述双输入功率放大器达到最佳工作性能。
在一个可能的设计中，所述模拟信号分解装置包括：包络检波器、合路器、可控非线性处理器，以及乘法器；在所述模拟信号分解装置对第一频段的模拟射频信号进行非线性处理的过程中，所述包络检波器接收所述至少两个频段的模拟射频信号，并对所述至少两个频段的模拟射频信号进行包络检波处理，生成至少两路检波信号；所述合路器对所述至少两路检波信号进行合路处理，生成合路检波信号；所述可控非线性处理器根据非线性参数，对所述合路检波信号进行非线性处理，生成两路非线性信号；所述乘法器将所述两路非线性信号分别与所述第一频段的模拟射频信号相乘，得到所述第一信号和所述第二信号。
这样，所述信号处理设备可以通过所述模拟信号分解装置，得到具备双输入功率放大器所需的非线性特征的第一信号和第二信号，从而保证后续合路处理得到的两路信号也具有该非线性特征，从而将所述两路信号输入到双输入功率放大器后，可以使所述双输入功率放大器达到最佳工作性能。可选的，所述可控非线性处理器可以根据不同的非线性参数，对所述合路检波信号进行非线性处理，生成两路非线性信号，以便进一步优化双输入功率放大器的工作性能。
在一个可能的设计中，所述可控非线性处理器的非线性参数符合双输入功率放大器的非线性工作特性。通过设置所述可控非线性处理器的非线性参数，可以保证所述可控非线性处理器生成的两路非线性信号中在每个频段中均包含了符合所述双输入功率放大器的功放特性要求的非线性特征，这样，在这两路非线性信号在经过各项处理后进入所述双输入功率放大器后，形成精确的负载牵引，从而保证所述双输入功率放大器可以达到最佳的工作效率和最佳线性，或者实现二者之间的折中。
在一个可能的设计中，所述信号处理设备还包括变频装置，所述变频装置可以接收至少两个频段的模拟基带信号，并将所述至少两个频段的模拟基带信号进行变频处理，生成所述至少两个频段的模拟射频信号。
这样，当所述信号处理设备接收的原始信号为模拟基带信号时，所述信号处理设备可以通过所述变频装置，得到模拟射频信号。
在一个可能的设计中，基于上述设计，所述信号处理设备还包括数模转换装置，用于接收至少两个频段的数字基带信号，并将所述至少两个频段的数字基带信号转换成所述至少两个频段的模拟基带信号。
这样，当所述信号处理设备接收到的原始信号为数字基带信号时，所述信号处理设备可以先通过所述数模转换装置将所述至少连个频段的数据基带信号转换为所述至少两个频段的模拟基带信号，从而使所述变频装置可以对所述至少两个频段的模拟基带信号进行处理，得到所述至少两个频段的模拟射频信号。
第二方面，本申请实施例还提供了一种功率放大设备，该功率放大设备包括上述任一种设计中的信号处理设备和双输入功率放大器，其中，所述双输入功率放大器，与所述合路装置连接，在所述信号处理设备得到两路信号后，将所述两路信号进行功率放大处理，生成一路射频信号，所述射频信号的频谱中包含所述至少两个频段。
由于通过所述信号处理设备得到的所述两路信号符合所述功率放大器的非线性特征，因此，采用本申请实施例提供的所述功率放大设备，可以使所述功率放大设备中的双输入功率放大器达到最佳工作性能，并得到满足多频段射频信号的性能要求。
第三方面，本申请实施例还提供了一种模拟信号分解装置，其特征在于，包括：包络检波器和可控非线性处理器；所述包络检波器，用于对包含至少两个频段的模拟射频信号进行包络检波；所述可控非线性处理器，用于根据所述包络检波器的输出以及非线性参数，生成两路非线性信号；所述模拟信号分解装置，基于第一频段的模拟射频信号和上述两路非线性信号，生成第一信号和第二信号。
在一个可能的设计中，所述模拟信号分解装置，包括：合路器、包络检波器、可控非线性处理器，以及乘法器；在所述模拟信号分解装置对第一频段的模拟射频信号进行非线性处理的过程中，所述合路器接收所述至少两个频段的模拟射频信号，并对所述至少两个频段的模拟射频信号进行合路处理，生成合路信号；所述包络检波器对所述合路信号进行包络检波处理，生成合路检波信号；所述可控非线性处理器根据非线性参数，对所述合路检波信号进行非线性处理，生成两路非线性信号；所述乘法器将所述两路非线性信号分别与所述第一频段的模拟射频信号相乘，得到所述第一信号和所述第二信号。
这样，所述信号处理设备可以通过所述模拟信号分解装置，得到具备双输入功率放大器所需的非线性的第一信号和第二信号，从而保证后续合路处理得到的两路信号也具有非线性，从而将所述两路信号输入到双输入功率放大器后，可以使所述双输入功率放大器达到最佳工作性能。
在另一个可能的设计中，所述模拟信号分解装置，包括：包络检波器、合路器、可控非线性处理器，以及乘法器；在所述模拟信号分解装置对第一频段的模拟射频信号进行非线性处理的过程中，所述包络检波器接收所述至少两个频段的模拟射频信号，并对所述至少两个频段的模拟射频信号进行包络检波处理，生成至少两路检波信号；所述合 路器对所述至少两路检波信号进行合路处理，生成合路检波信号；所述可控非线性处理器根据非线性参数，对所述合路检波信号进行非线性处理，生成两路非线性信号；所述乘法器将所述两路非线性信号分别与所述第一频段的模拟射频信号相乘，得到所述第一信号和所述第二信号。
这样，所述信号处理设备可以通过所述模拟信号分解装置，得到具备双输入功率放大器所需的非线性特征的第一信号和第二信号，从而保证后续合路处理得到的两路信号也具有该非线性特征，从而将所述两路信号输入到双输入功率放大器后，可以使所述双输入功率放大器达到最佳工作性能。
结合上述可能的设计方式，可选的，所述可控非线性处理器可以根据不同的非线性参数，对所述合路检波信号进行非线性处理，生成两路非线性信号，以便进一步优化双输入功率放大器的工作性能。
第四方面，本申请提供了一种芯片系统，用于实现上述任一方面或任一种可能的设计中所述的设备或装置。该芯片系统可以由芯片构成，也可以包含芯片和其他分立器件。所述芯片，可以是一种专用集成电路(Application-Specific Integrated Circuit，ASIC)，也可以是其他形式的芯片。可选的，所述芯片系统还可以包含处理器，用于支持上述设备或装置实现上述方面中所涉及的功能，例如，获取上述方面中所涉及的信号和/或参数，进行上述方面中的信号处理过程。在一种可能的设计中，所述芯片系统还包括存储器，所述存储器，用于保存数字预失真处理装置必要的程序指令和数据。
第五方面，本申请实施例还提供了一种信号处理方法，包括：根据至少两个频段的模拟射频信号，生成第一信号和第二信号，所述第一信号和所述第二信号基于第一频段的模拟射频信号经过非线性变化获得，所述第一频段为所述至少两个频段中的任一频段；将基于所述第一频段的模拟射频信号获得的所述第一信号与基于其它频段的模拟射频信号获得的第一信号进行合路处理，并将基于所述第一频段的模拟射频信号获得的所述第二信号与基于所述其它频段的模拟射频信号获得的第二信号进行合路处理，生成两路信号，其中，所述其它频段为所述至少两个频段中除第一频段外的频段，所述两路信号的频谱中包含所述至少两个频段。
在一个可能的设计中，所述根据至少两个频段的模拟射频信号，生成第一信号和第二信号，包括：通过包络检波和可控非线性处理，获得基于所述第一频段的模拟射频信号生成的所述第一信号和所述第二信号。
在一个可能的设计中，根据所述至少两个频段的模拟射频信号，生成所述第一信号和所述第二信号，包括：对所述至少两个频段的模拟射频信号进行合路处理，生成合路信号；对所述合路信号进行包络检波处理，生成合路检波信号；根据非线性参数，对所述合路检波信号进行非线性处理，生成两路非线性信号；将所述两路非线性信号分别与所述第一频段的模拟射频信号相乘，得到所述第一信号和所述第二信号。
在一个可能的设计中，根据所述至少两个频段的模拟射频信号，生成所述第一信号和所述第二信号，包括：对所述至少两个频段的模拟射频信号进行包络检波处理，生成至少两路检波信号；对所述至少两路检波信号进行合路处理，生成合路检波信号；根据非线性参数，对所述合路检波信号进行非线性处理，生成两路非线性信号；将所述两路非线性信号分别与所述第一频段的模拟射频信号相乘，得到所述第一信号和所述第二信号。
在一个可能的设计中，在根据至少两个频段的模拟射频信号，生成第一信号和第二信号之前，所述方法还包括：将至少两个频段的模拟基带信号进行变频处理，生成所述至少两个频段的模拟射频信号。
在一个可能的设计中，在将所述至少两个频段的模拟基带信号进行变频处理之前，所述方法还包括：将至少两个频段的数字基带信号转换成所述至少两个频段的模拟基带信号。
在一个可能的设计中，所述方法还包括：将所述两路信号进行功率放大处理，生成一路射频信号，所述射频信号的频谱中包含所述至少两个频段。
可选的，该方法可以应用于上述方面中所述信号处理设备，也可以应用于其他需要对多频段信号或者宽带信号进行分解和/或非线性处理的信号处理设备，例如，基站。
第六方面，本申请实施例提供了一种信号处理设备，该信号处理设备具有实现第五方面中任一种方法的功能。所述功能可以通过硬件实现，也可以通过硬件执行相应的软件实现。所述硬件或软件包括一个或多个与上述功能相对应的模块。
第七方面，本申请实施例提供了一种计算机存储介质，用于储存为上述信号处理设备所用的计算机软件指令，其包含用于执行上述方面所设计的程序。
本申请实施例中，信号处理设备中包括模拟信号分解装置和合路装置，其中，所述模拟信号分解装置可以对至少两个频段中每个频段的模拟射频信号进行非线性变化，生成基于每个频段的模拟射频信号获得的第一信号和第二信号；所述合路装置可以将基于所述至少两个频段中每个频段的模拟射频信号获得第一信号进行合路处理，并将基于所述至少两个频段中每个频段的模拟射频信号获得第一信号进行合路处理，最终生成频谱中包含所述至少两个频段的两路信号。由于所述模拟信号分解装置对每个频段的模拟射频信号进行非线性变化生成第一信号和第二信号，因此生成的第一信号和第二信号分别合路后的两路信号在各个频段上都符合双输入功率放大器的非线性特征，因此将所述两路信号输入到双输入功率放大器后，可以使所述双输入功率放大器达到最佳工作性能；另外由于生成的所述两路信号的频谱中包含所述至少两个频段，即所述两路信号为宽带信号(或多频段信号)。综上所述，信号处理设备可以得到使双输入功率放大器工作性能高的多频段信号。
附图说明
图1为本申请实施例提供的一种信号处理设备的结构图；
图2为本申请实施例提供的另一种信号处理设备的结构图；
图3为本申请实施例提供的一种模拟信号分解装置的结构图；
图4为本申请实施例提供的另一种模拟信号分解装置的结构图；
图5为本申请实施例提供的一种多个模拟信号分解装置的结构图；
图6为本申请实施例提供的另一种多个模拟信号分解装置的结构图；
图7为本申请实施例提供的一种信号处理设备的结构示例图；
图8为本申请实施例提供的另一种信号处理设备的结构示例图；
图9为本申请实施例提供的一种功率放大设备的结构图；
图10为本申请实施例提供的一种信号处理方法的流程图；
图11为本申请实施例提供的一种功率放大设备的流程图。
具体实施方式
下面将结合附图对本申请作进一步地描述。
本申请实施例提供一种信号处理方法及设备，用以得到使双输入功率放大器在进行放大处理时，工作性能较高的多频段信号。其中，方法和装置是基于同一发明构思的，由于方法及装置解决问题的原理相似，因此装置与方法的实施可以相互参见，重复之处不再赘述。
本申请实施例中所述的信号处理设备或功率放大设备，可以是任何需要对信号进行处理或对信号进行功率放大处理的网络设备或者用户设备，也可以是网络设备或者用户设备中一个或者多个软件和/或硬件模块。本申请所涉及到的用户设备可以包括各种具有无线通信功能的手持设备、车载设备、可穿戴设备、计算设备、控制设备或连接到无线调制解调器的其它处理设备，以及各种形式的用户设备(User Equipment，UE)、移动台(Mobile station，MS)、终端(Terminal)或终端设备(Terminal Equipment)等。为方便描述，本申请中，上面提到的设备统称为用户设备(UE)。本申请所涉及到的网络侧设备包括基站(Base Station，BS)、网络控制器或移动交换中心等，其中通过无线信道与用户设备进行直接通信的装置通常是基站，所述基站可以包括各种形式的宏基站、微基站、中继站、接入点或射频拉远单元(Remote Radio Unit，RRU)等，当然，与用户设备进行无线通信的也可以是其他具有无线通信功能的网络侧设备，本申请对此不做唯一限定。在采用不同的无线接入技术的系统中，具备基站功能的设备的名称可能会有所不同，例如在LTE网络中，称为演进的节点B(evolved NodeB，eNB或eNodeB)，在3G(the 3rd Generation，第三代)网络中，称为节点B(Node B)等。
本申请实施例中，信号处理设备中包括模拟信号分解装置和合路装置，其中，所述模拟信号分解装置可以对至少两个频段中每个频段的模拟射频信号进行非线性变化，生成基于每个频段的模拟射频信号获得的第一信号和第二信号；所述合路装置可以将基于所述至少两个频段中每个频段的模拟射频信号获得第一信号进行合路处理，并将基于所述至少两个频段中每个频段的模拟射频信号获得第一信号进行合路处理，最终生成频谱中包含所述至少两个频段的两路信号。由于所述模拟信号分解装置对每个频段的模拟射频信号进行非线性变化生成第一信号和第二信号，因此生成的第一信号和第二信号分别合路后的两路信号在各个频段上都符合双输入功率放大器的非线性特征，因此将所述两路信号输入到双输入功率放大器后，可以使所述双输入功率放大器达到最佳工作性能；另外由于生成的所述两路信号的频谱中包含所述至少两个频段，即所述两路信号为多频段信号。综上所述，信号处理设备可以得到使双输入功率放大器工作性能高的多频段信号。
下面将结合附图对本申请实施例的技术方案进行描述。
本申请实施例提供了一种信号处理设备，所述设备包括：模拟信号分解装置和合路装置，其中，在信号处理过程中各装置的功能为：
模拟信号分解装置，用于接收至少两个频段的模拟射频信号，生成第一信号和第二信号；所述第一信号和所述第二信号基于第一频段的模拟射频信号经过非线性变化获得，所述第一频段为所述至少两个频段中的任一频段；
合路装置，用于将基于所述第一频段的模拟射频信号获得的所述第一信号与基于其它频段的模拟射频信号获得的第一信号进行合路处理，并将基于所述第一频段的模拟射 频信号获得的所述第二信号与基于所述其它频段的模拟射频信号获得的第二信号进行合路处理，生成两路信号，其中，所述其它频段为所述至少两个频段中除第一频段外的频段，所述两路信号的频谱中包含所述至少两个频段。
其中，基于任一频段的模拟射频信号获得的所述第一信号和所述第二信号，是基于该频段的模拟射频信号进行过失真后获得，因此，该第一信号和第二信号，主要分布在该频段上，另外还有少量信号分布在该频段两侧。
在上述过程中，所述模拟信号分解装置可以基于所述至少两个频段中每个频段的模拟射频信号进行非线性变化处理，得到所述第一信号和所述第二信号。由于所述第一信号和所述第二信号具有非线性，因此所述合路装置将基于所述至少两个频段的模拟射频信号获得的第一信号进行合路处理，和将基于所述至少两个频段的模拟射频信号获得的第二信号进行合路处理得到的两路信号也具有非线性，从而将所述两路信号输入到双输入功率放大器后，可以使所述双输入功率放大器达到最佳工作性能。
所述合路装置得到的所述两路信号的频谱中，均包含所述至少两个频段，即所述两路信号为多频段信号，符合功率放大器对多频段的信号非线性需求。
可选的，在本申请实施例中，一个所述模拟信号分解装置可以对多个频段中的模拟射频信号进行非线性变化处理，或者只对一个频段中的模拟射频信号进行非线性变化处理。因此，所述信号处理设备中可以存在一个所述模拟信号分解装置，或者存在所述至少两个所述模拟信号分解装置，或者存在数量小于所述至少两个频段的数量的所述模拟信号分解装置。本申请实施例对此不作限定。
同理，可选的，在本申请实施例中，所述信号处理设备可以通过一个所述合路装置对获得的第一信号进行合路处理，以及对获得的第二信号进行合路处理；或者所述信号处理设备通过两个合路装置，分别实现对获得的第一信号进行合路处理和对第二信号进行合路处理。
基于以上描述，本申请实施例提供了两种可能的信号处理设备的结构示意图，如图1和图2所示，其中，图中所示的N为大于等于2的正整数。
在图1所示的信号处理设备中，存在一个模拟信号分解装置101和一个合路装置102。其中，所述模拟信号分解装置101实现对至少两个频段(如图中的频段1至频段N)中每个频段的模拟射频信号进行非线性变化处理；所述合路装置102实现对获得的第一信号进行合路处理，以及对获得的第二信号进行合路处理。
在图2所示的信号处理设备中，存在N个模拟信号分解装置201和两个合路装置202。其中，每个模拟信号分解装置201实现对N个频段中一个频段的模拟射频信号进行非线性变化处理；所述两个合路装置202中其中一个实现对获得的第一信号进行合路处理，另外一个实现对获得的第二信号进行合路处理。
需要说明的是，图1和图2两种信号处理设备仅为本申请实施例提供的信号处理设备的结构的两个示例，本申请实施例提供的所述信号处理设备还存在其他结构形式，不仅限定于该两种结构形式。
可选的，所述模拟信号分解装置，在对每个频段的模拟射频信号进行非线性变化处理时，具体用于：
通过包络检波和可控非线性处理获得基于所述每个频段的模拟射频信号生成的所述第一信号和所述第二信号。
通过上述方法，所述模拟信号分解装置可以使生成的所述第一信号和所述第二信号具有非线性。
由于传统的数字信号分解模块，对所述信号处理设备的采样率和带宽要求非常高，因此传统的数字信号分解模块可能无法完成多频带信号的分解或者造成器件成本过高。传统的模拟信号分解模块无法同时在各个频段产生期望的幅度和相位特性，所以传统的模拟信号分解模块也无法实现较好的信号分解效果。基于以上描述，为了达到较好的信号分解效果，本申请实施例还提供了两种新型结构的模拟信号分解装置，参阅图3和图4所示。
图3示出了本申请实施例提供的一种模拟信号分解装置的结构，如图所示，所述模拟信号分解装置包括：合路器301、包络检波器302、可控非线性处理器303，以及乘法器304。
其中，在所述模拟信号分解装置对第一频段(图中的频段1)的模拟射频信号进行非线性变化，获得所述第一信号和所述第二信号时，上述各模块的功能如下：
所述合路器301，用于接收所述至少两个频段的模拟射频信号，并对所述至少两个频段的模拟射频信号进行合路处理，生成合路信号；
所述包络检波器302，用于对所述合路信号进行包络检波处理，生成合路检波信号；
所述可控非线性处理器303，用于根据非线性参数，对所述合路检波信号进行非线性处理，生成两路非线性信号；
所述乘法器304，用于将所述两路非线性信号分别与所述第一频段的模拟射频信号(即所述模拟信号分解装置的主信号)相乘，得到所述第一信号和所述第二信号。
可选的，所述模拟信号分解装置可以通过一个所述可控非线性处理器303生成两路非线性信号，或者所述模拟信号分解装置通过两个所述可控非线性处理器303对两路合路检波信号进行非线性处理，生成的两路非线性信号。本申请对此不作限定。
同理，可选的，所述模拟信号分解装置可以通过一个乘法器或两个乘法器，进行所述两路非线性信号分别于所述第一频段的模拟射频信号相乘。本申请对此不作限定。图3仅为所述模拟信号分解装置的一种可能的结构示例。
在所述模拟信号分解装置在对所述第一频段的模拟射频信号进行非线性变化，获得所述第一信号和所述第二信号的过程中：所述合路器301可以将所述至少两个模拟射频信号合路成一个包含多个频段的合路信号；所述包络检波器302可以生成的所述合路信号的包络信息；所述可控非线性处理器303可以产生双输入功率放大器需要的非线性。
因此，所述信号处理设备可以通过图3所示的所述模拟信号分解装置，得到具备双输入功率放大器所需的非线性的第一信号和第二信号，从而保证后续合路处理得到的两路信号也具有非线性，从而将所述两路信号输入到双输入功率放大器后，可以使所述双输入功率放大器达到最佳工作性能。
可选的，所述可控非线性处理器303采用不同的非线性参数，对所述合路检波信号进行非线性处理，生成两路非线性信号，即所述两路非线性信号分别是所述可控非线性处理器303根据不同的非线性参数生成的。
可选的，所述不同的非线性参数均符合双输入功率放大器的非线性工作特性，即所述可控非线性处理器303可以根据所述双输入功率放大器的非线性工作特性，确定所述不同的非线性参数。例如可以对所述双输入功率放大器进行遍历扫描，从而获取所述不同 非线性参数。
通过设置所述可控非线性处理器303的非线性参数，可以保证生成的两路非线性信号中在每个频段中均包含了符合所述双输入功率放大器的功放特性要求的非线性特征，这样，在这两路非线性信号在经过各项处理后进入所述双输入功率放大器后，形成精确的负载牵引，从而保证所述双输入功率放大器可以达到最佳的工作效率和最佳线性，或者实现二者之间的折中。
进一步地，当所述信号处理设备中包括多个模拟信号分解装置时，所述多个模拟信号分解装置中所有采用如图3所示的结构的模拟信号分解装置，均需要通过根据所述双输入功率放大器的非线性工作特性，确定自身中可控非线性处理器303的非线性参数。
图4示出了本申请实施例提供的另一种模拟信号分解装置的结构，如图所示，所述模拟信号分解装置包括：包络检波器401、合路器402、可控非线性处理器403，以及乘法器404。
其中，在所述模拟信号分解装置对第一频段(图中的频段1)的模拟射频信号进行非线性变化，获得所述第一信号和所述第二信号时，上述各模块的功能如下：
所述包络检波器401，用于接收所述至少两个频段的模拟射频信号，并对所述至少两个频段的模拟射频信号进行包络检波处理，生成至少两路检波信号；
所述合路器402，用于对所述至少两路检波信号进行合路处理，生成合路检波信号；
所述可控非线性处理器403，用于根据不同的非线性参数，对所述合路检波信号进行非线性处理，生成两路非线性信号；
所述乘法器404，用于将所述两路非线性信号分别与所述第一频段的模拟射频信号(即所述模拟信号分解装置的主信号)相乘，得到所述第一信号和所述第二信号。
可选的，所述模拟信号分解装置可以通过一个包络检波器401生成所述至少两路检波信号，或者通过所述至少两个包络检波器401，分别生成所述至少两路检波信号中的每一路，如图4所示。
可选的，所述模拟信号分解装置可以通过一个所述可控非线性处理器403生成两路非线性信号，或者所述模拟信号分解装置通过两个所述可控非线性处理器403对两路合路检波信号进行非线性处理，生成的两路非线性信号。本申请对此不作限定。
同理，可选的，所述模拟信号分解装置可以通过一个乘法器或两个乘法器，进行所述两路非线性信号分别于所述第一频段的模拟射频信号相乘。本申请对此不作限定。图4仅为所述模拟信号分解装置的一种可能的结构示例。
在所述模拟信号分解装置在对所述第一频段的模拟射频信号进行非线性变化，获得所述第一信号和所述第二信号的过程中：所述包络检波器401可以生成的所述至少两个模拟射频信号的包络信息；所述合路器402可以将所述至少两路检波信号合路成一个包含多个频带的合路检波信号；所述可控非线性处理器403可以产生双输入功率放大器需要的非线性。
因此，所述信号处理设备可以通过图4所示的所述模拟信号分解装置，得到具备双输入功率放大器所需的非线性的第一信号和第二信号，从而保证续合路处理得到的两路信号也具有非线性特征，从而将所述两路信号输入到双输入功率放大器后，可以使所述双输入功率放大器达到最佳工作性能。
同图3所示的模拟信号分解装置相同，图4所示的模拟信号分解装置中的两个可控非 线性处理器403也采用不同的非线性参数，对所述合路检波信号进行非线性处理，生成两路非线性信号。由于使用的原理相同，因此可以借鉴以上的描述，此处不再赘述。
通过设置所述可控非线性处理器403的非线性参数，可以保证生成的两路非线性信号中在每个频段中均包含了符合所述双输入功率放大器的功放特性要求的非线性，这样，在这两路非线性信号在经过各项处理后进入所述双输入功率放大器后，形成精确的负载牵引，从而保证所述双输入功率放大器可以达到最佳的工作效率和最佳线性，或者实现二者之间的折中。
进一步地，当所述信号处理设备中包括多个模拟信号分解装置时，所述多个模拟信号分解装置中所有采用如图4所示的结构的模拟信号分解装置，均需要通过根据所述双输入功率放大器的非线性工作特性，确定自身中可控非线性处理器403的非线性参数。
通过比较图3和图4可知，两种结构的不同在于实现合路处理和包络检波处理的先后顺序不同，即合路器和包络检波器的相对位置不同，因此，两种结构的优点各有不同：图3所示的模拟信号分解装置可以实现更加精确的非线性，提高了双输入功率放大器的工作效率；图4所示的模拟信号分解装置中包络检波器输出的检波信号为窄带信号，对双输入功率放大器的输入匹配电路的带宽要求低。
在本申请实施例中，并不限定所述信号处理设备中的模拟信号分解装置的结构，因此，当所述信号处理设备中包括多个模拟信号分解装置时，所述多个模拟信号分解装置可以均采用如图3所示的结构，或者，所述多个模拟信号分解装置可以均采用如图4所示的结构，又或者，所述多个模拟信号分解装置中一部分采用如图3所示的结构，而另一部分采用如图4所示的结构，再或者所述多个模拟信号分解装置中可以采用其他具有与图3或图4所示的模拟信号分解装置相同功能的其他结构。
在本申请实施例中，当所述信号处理设备中多个模拟信号分解装置采用同一结构(即图3所示的结构或图4所示的结构)时，由于每个模拟信号分解装置中合路器输入和输出的信号都是相同的，且包络检波器输入和输出的信号也是相同的，因此，所述多个模拟信号分解装置可以共用包括合路器和包络检波器的这一部分电路。这样，可以节省所述信号处理设备中电路器件的数量，节省电路布局费用。
例如，当所述多个模拟信号分解装置均采用如图3所示的结构时，所述多个模拟信号分解装置的结构示意图如图5所示。
在所述多个模拟信号分解装置对多个频段的射频信号进行非线性处理的过程中：
合路器将所述多个频段的模拟射频信号进行合路处理，生成合路信号；包络检波器对所述合路信号进行包络检波处理，生成合路检波信号；每个模拟信号分解装置中的可控非线性处理器分别获取所述合路检波信号进行非线性处理，生成两路非线性信号；每个模拟信号分解装置通过乘法器，将各自生成的两路非线性信号与各自的主信号相乘，得到第一信号和第二信号。
又例如，当所述多个模拟信号分解装置均采用如图4所示的结构时，所述多个模拟信号分解装置的结构示意图如图6所示。
在所述多个模拟信号分解装置对多个频段的射频信号进行非线性处理的过程中：
多个包络检波器对所述多个频段的射频信号进行包络检波处理，生成多路检波信号；合路器将所述多路检波信号进行合路处理，生成合路检波信号；每个模拟信号分解装置中的可控非线性处理器分别获取所述合路检波信号进行非线性处理，生成两路非线 性信号；每个模拟信号分解装置通过乘法器，将各自生成的两路非线性信号与各自的主信号相乘，得到第一信号和第二信号。
在本申请实施例中，所述信号处理设备，或者所述信号处理设备中的所述模拟信号分解装置或所述合路装置，均可以是通过分立器件搭建的，也可以通过芯片内部实现的，对此本申请实施例不作限定。
在以上实施例中，所述信号处理设备是对所述至少两个频段的模拟射频信号进行处理的。因此，当所述信号处理设备接收的原始信号不是所述至少两个频段的模拟射频信号时，所述信号处理设备还需要对所述原始信号进行处理，得到所述至少两个频段的模拟射频信号。
可选的，当所述信号处理设备接收到的原始信号为至少两个频段的模拟基带信号时，所述信号处理设备还包括变频装置。
所述变频装置，用于接收所述至少两个频段的模拟基带信号，并将所述至少两个频段的模拟基带信号进行变频处理，生成所述至少两个频段的模拟射频信号。
可选的，所述信号处理设备可以通过一个所述变频装置实现对所述至少两个频段的模拟基带信号的变频处理，或者通过与频段数量相同的变频装置实现对所述至少两个频段的模拟基带信号的变频处理，本申请对此不作限定。
可选的，基于所述信号处理设备的以上结构，当所述信号处理设备接收到的原始信号为至少两个频段的数字基带信号时，所述信号处理设备还包括数模转换装置。
所述数模转换装置，用于接收所述至少两个频段的数字基带信号，并将所述至少两个频段的数字基带信号转换成所述至少两个频段的模拟基带信号，这样，所述变频装置可以对所述至少两个频段的模拟基带信号进行处理，得到所述至少两个频段的模拟射频信号。
可选的，所述数模转换装置可以为数字模拟转换器(Digital Analog Convert，DAC)。
本申请实施例提供了一种信号处理设备，信号处理设备中包括模拟信号分解装置和合路装置，其中，所述模拟信号分解装置可以对至少两个频段中每个频段的模拟射频信号进行非线性变化，生成基于每个频段的模拟射频信号获得的第一信号和第二信号；所述合路装置可以将基于所述至少两个频段中每个频段的模拟射频信号获得第一信号进行合路处理，并将基于所述至少两个频段中每个频段的模拟射频信号获得第一信号进行合路处理，最终生成频谱中包含所述至少两个频段的两路信号。由于所述模拟信号分解装置对每个频段的模拟射频信号进行非线性变化生成第一信号和第二信号，因此生成的第一信号和第二信号分别合路后的两路信号在各个频段上都符合双输入功率放大器的非线性特征，因此将所述两路信号输入到双输入功率放大器后，可以使所述双输入功率放大器达到最佳工作性能；另外由于生成的所述两路信号的频谱中包含所述至少两个频段，即所述两路信号为多频段信号。综上所述，信号处理设备可以得到使双输入功率放大器工作性能高的多频段信号。
基于以上实施例，本申请实施例还提供了一种对两个频段的模拟射频信号进行处理的信号处理设备，参阅图7所示，所述信号处理设备中包括两个模拟信号分解装置701，以及两个合路装置702。
在信号处理过程中，每个模拟信号分解装置701均接收频段1和频段2的模拟射频信号，并分别基于其中一个频段的模拟射频信号进行非线性变化处理，得到基于该频段的 模拟信号获得的第一信号和第二信号；
所述两个合路装置702中的其中一个合路装置702将所述两个模拟信号分解装置701生成的第一信号进行合路处理，生成一路信号；另外一个合路装置702将所述两个模拟信号分解装置701生成的第一信号进行合路处理，也生成一路信号，从而所述信号处理设备可以得到频谱中包含频段1和频段2的两路多频段信号。
可选的，当所述信号处理设备获得的原始信号为频段1和频段2的模拟基带信号时，所述信号处理设备还包括两个变频装置703，如图所示，每个变频装置703用于分别对一个频段的模拟基带信号进行变频处理，从而得到相应频段的模拟射频信号。
可选的，当所述信号处理设备获得的原始信号为频段1和频段2的数字基带信号时，所述信号处理设备不仅包括上述两个变频装置703，还包括两个数模转换装置704，如图所示，每个数模转换装置704用于分别对一个频段的数字基带信号进行数模转换处理，得到该频段的模拟基带信号，进而可以通过变频装置，得到相应频段的模拟射频信号。
基于以上实施例，本申请实施例还提供了一种对N个频段的模拟射频信号进行处理的信号处理设备，参阅图8所示，所述信号处理设备中包括N个模拟信号分解装置801，以及两个合路装置802，其中N为大于2的正整数。可选的，所述信号处理设备还包括N个变频装置803和N个数模转换装置804。在信号处理过程中，各装置的功能可以参阅图7所示的实施例，此处不再赘述。
基于以上信号处理设备，本申请实施例还提供了一种功率放大设备，该功率放大设备包括上述实施例中的信号处理设备901以及双输入功率放大器902，其中，所述双输入功率放大器902与所述信号处理设备901连接。所述信号处理设备901中包含的装置以及每个装置的功能可以参见上述实施例，此处不再赘述。
在所述功率放大设备将所述至少两个频段的模拟射频信号通过所述信号处理设备901进行信号处理，得到两路信号(多频段信号)后，所述双输入功率放大器902用于将所述两路信号进行功率放大处理，生成一路射频信号，所述射频信号的频谱中包含所述至少两个频段。
由于通过所述信号处理设备得到的所述两路信号符合所述功率放大器的非线性，因此，采用本申请实施例提供的所述功率放大设备，可以使所述功率放大设备中的双输入功率放大器达到最佳工作性能，并得到满足多频段非线性要求的射频信号。
基于以上实施例，本申请实施例还提供了一种信号处理方法，该方法适用于以上实施例提供的信号处理设备，或者其他需要对多频段信号进行处理的设备。参阅图10所示，所述方法的具体流程包括以下步骤：
步骤1001：所述信号处理设备根据至少两个频段的模拟射频信号，生成第一信号和第二信号，所述第一信号和所述第二信号基于第一频段的模拟射频信号经过非线性变化获得，所述第一频段为所述至少两个频段中的任一频段；
步骤1002：所述信号处理设备将基于所述第一频段的模拟射频信号获得的所述第一信号与基于其它频段的模拟射频信号获得的第一信号进行合路处理，并将基于所述第一频段的模拟射频信号获得的所述第二信号与基于所述其它频段的模拟射频信号获得的第二信号进行合路处理，生成两路信号，其中，所述其它频段为所述至少两个频段中除第一频段外的频段，所述两路信号的频谱中包含所述至少两个频段。
可选的，所述信号处理设备根据至少两个频段的模拟射频信号，生成第一信号和第 二信号，包括：
所述信号处理设备通过包络检波和可控非线性处理，获得基于所述第一频段的模拟射频信号生成的所述第一信号和所述第二信号。
可选的，所述信号处理设备根据所述至少两个频段的模拟射频信号，生成所述第一信号和所述第二信号，包括：
所述信号处理设备对所述至少两个频段的模拟射频信号进行合路处理，生成合路信号；
所述信号处理设备对所述合路信号进行包络检波处理，生成合路检波信号；
所述信号处理设备根据非线性参数，对所述合路检波信号进行非线性处理，生成两路非线性信号；
所述信号处理设备将所述两路非线性信号分别与所述第一频段的模拟射频信号相乘，得到所述第一信号和所述第二信号。
可选的，所述信号处理设备根据所述至少两个频段的模拟射频信号，生成所述第一信号和所述第二信号，包括：
所述信号处理设备对所述至少两个频段的模拟射频信号进行包络检波处理，生成至少两路检波信号；
所述信号处理设备对所述至少两路检波信号进行合路处理，生成合路检波信号；
所述信号处理设备根据不同的非线性参数，对所述合路检波信号进行非线性处理，生成两路非线性信号；
所述信号处理设备将所述两路非线性信号分别与所述第一频段的模拟射频信号相乘，得到所述第一信号和所述第二信号。
可选的，在所述信号处理设备根据至少两个频段的模拟射频信号，生成第一信号和第二信号之前，所述方法还包括：
所述信号处理设备将所述至少两个频段的模拟基带信号进行变频处理，生成所述至少两个频段的模拟射频信号。
可选的，在所述信号处理设备将所述至少两个频段的模拟基带信号进行变频处理之前，所述方法还包括：
所述信号处理设备将所述至少两个频段的数字基带信号转换成所述至少两个频段的模拟基带信号。
通过本申请实施例提供的信号处理方法，信号处理设备可以对至少两个频段中每个频段的模拟射频信号进行非线性变化，生成基于每个频段的模拟射频信号获得的第一信号和第二信号；以及将基于所述至少两个频段中每个频段的模拟射频信号获得第一信号进行合路处理，并将基于所述至少两个频段中每个频段的模拟射频信号获得第一信号进行合路处理，最终生成频谱中包含所述至少两个频段的两路信号。由于所述信号处理设备对每个频段的模拟射频信号进行非线性变化生成第一信号和第二信号，因此生成的第一信号和第二信号分别合路后的两路信号符合双输入功率放大器的非线性，因此将所述两路信号输入到双输入功率放大器后，可以使所述双输入功率放大器达到最佳工作性能；另外由于生成的所述两路信号的频谱中包含所述至少两个频段，即所述两路信号为多频段信号。综上所述，采用该方法，所述信号处理设备可以得到使双输入功率放大器工作性能高的多频段信号。
基于以上实施例，本申请实施例还提供了一种功率放大方法，该方法适用于以上实施例提供的功率放大设备，或者其他需要对多频段信号进行功率放大处理的设备。参阅图11所示，所述方法的具体流程包括以下步骤：
步骤1101：所述功率放大设备根据至少两个频段的模拟射频信号，生成第一信号和第二信号，所述第一信号和所述第二信号基于第一频段的模拟射频信号经过非线性变化获得，所述第一频段为所述至少两个频段中的任一频段；
步骤1102：所述功率放大设备将基于所述第一频段的模拟射频信号获得的所述第一信号与基于其它频段的模拟射频信号获得的第一信号进行合路处理，并将基于所述第一频段的模拟射频信号获得的所述第二信号与基于所述其它频段的模拟射频信号获得的第二信号进行合路处理，生成两路信号，其中，所述其它频段为所述至少两个频段中除第一频段外的频段，所述两路信号的频谱中包含所述至少两个频段；
步骤1103：所述功率放大设备将所述两路信号进行功率放大处理，生成一路射频信号，所述射频信号的频谱中包含所述至少两个频段。
由于通过上述实施例中的信号处理方法得到的所述两路信号符合所述功率放大器的非线性，因此，采用本申请实施例提供的功率放大方法，可以使功率放大设备中的双输入功率放大器达到最佳工作性能，并得到满足多频段信号非线性要求的射频信号。
本申请实施例中提供了一种信号处理方法及设备，信号处理设备中包括模拟信号分解装置和合路装置，其中，所述模拟信号分解装置可以对至少两个频段中每个频段的模拟射频信号进行非线性变化，生成基于每个频段的模拟射频信号获得的第一信号和第二信号；所述合路装置可以将基于所述至少两个频段中每个频段的模拟射频信号获得第一信号进行合路处理，并将基于所述至少两个频段中每个频段的模拟射频信号获得第一信号进行合路处理，最终生成频谱中包含所述至少两个频段的两路信号。由于所述模拟信号分解装置对每个频段的模拟射频信号进行非线性变化生成第一信号和第二信号，因此生成的第一信号和第二信号分别合路后的两路信号在各个频段上都符合双输入功率放大器的非线性特征，因此将所述两路信号输入到双输入功率放大器后，可以使所述双输入功率放大器达到最佳工作性能；另外由于生成的所述两路信号的频谱中包含所述至少两个频段，即所述两路信号为宽带信号(或多频段信号)。综上所述，信号处理设备可以得到使双输入功率放大器工作性能高的多频段信号。
显然，本领域的技术人员可以对本申请实施例进行各种改动和变型而不脱离本申请实施例的精神和范围。这样，倘若本申请实施例的这些修改和变型属于本申请权利要求及其等同技术的范围之内，则本申请也意图包含这些改动和变型在内。

Claims (14)

  1. 一种信号处理设备，其特征在于，包括：
    模拟信号分解装置，用于接收至少两个频段的模拟射频信号，生成第一信号和第二信号；所述第一信号和所述第二信号基于第一频段的模拟射频信号经过非线性变化获得，所述第一频段为所述至少两个频段中的任一频段；
    合路装置，用于将基于所述第一频段的模拟射频信号获得的所述第一信号与基于其它频段的模拟射频信号获得的第一信号进行合路处理，并将基于所述第一频段的模拟射频信号获得的所述第二信号与基于所述其它频段的模拟射频信号获得的第二信号进行合路处理，生成两路信号，其中，所述其它频段为所述至少两个频段中除第一频段外的频段，所述两路信号的频谱中包含所述至少两个频段。
  2. 如权利要求1所述的信号处理设备，其特征在于，所述模拟信号分解装置，具体用于通过包络检波和可控非线性处理获得基于所述第一频段的模拟射频信号生成的所述第一信号和所述第二信号。
  3. 如权利要求1或2所述的信号处理设备，其特征在于，所述模拟信号分解装置包括：合路器、包络检波器、可控非线性处理器，以及乘法器；
    所述合路器，用于接收所述至少两个频段的模拟射频信号，并对所述至少两个频段的模拟射频信号进行合路处理，生成合路信号；
    所述包络检波器，用于对所述合路信号进行包络检波处理，生成合路检波信号；
    所述可控非线性处理器，用于根据非线性参数，对所述合路检波信号进行非线性处理，生成两路非线性信号；
    所述乘法器，用于将所述两路非线性信号分别与所述第一频段的模拟射频信号相乘，得到所述第一信号和所述第二信号。
  4. 如权利要求1或2所述的信号处理设备，其特征在于，所述模拟信号分解装置包括：包络检波器、合路器、可控非线性处理器，以及乘法器；
    所述包络检波器，用于接收所述至少两个频段的模拟射频信号，并对所述至少两个频段的模拟射频信号进行包络检波处理，生成至少两路检波信号；
    所述合路器，用于对所述至少两路检波信号进行合路处理，生成合路检波信号；
    所述可控非线性处理器，用于根据非线性参数，对所述合路检波信号进行非线性处理，生成两路非线性信号；
    所述乘法器，用于将所述两路非线性信号分别与所述第一频段的模拟射频信号相乘，得到所述第一信号和所述第二信号。
  5. 如权利要求1～4任一项所述的信号处理设备，其特征在于，还包括变频装置，用于接收至少两个频段的模拟基带信号，并将所述至少两个频段的模拟基带信号进行变频处理，生成所述至少两个频段的模拟射频信号。
  6. 如权利要求5所述的信号处理设备，其特征在于，还包括数模转换装置，用于接收至少两个频段的数字基带信号，并将所述至少两个频段的数字基带信号转换成所述至少两个频段的模拟基带信号。
  7. 一种功率放大设备，其特征在于，包括权利要求1～6任一项所述的信号处理设备和双输入功率放大器；
    所述双输入功率放大器，与所述合路装置连接，用于将所述两路信号进行功率放大处理，生成一路射频信号，所述射频信号的频谱中包含所述至少两个频段。
  8. 一种信号处理方法，其特征在于，所述方法包括：
    根据至少两个频段的模拟射频信号，生成第一信号和第二信号，所述第一信号和所述第二信号基于第一频段的模拟射频信号经过非线性变化获得，所述第一频段为所述至少两个频段中的任一频段；
    将基于所述第一频段的模拟射频信号获得的所述第一信号与基于其它频段的模拟射频信号获得的第一信号进行合路处理，并将基于所述第一频段的模拟射频信号获得的所述第二信号与基于所述其它频段的模拟射频信号获得的第二信号进行合路处理，生成两路信号，其中，所述其它频段为所述至少两个频段中除第一频段外的频段，所述两路信号的频谱中包含所述至少两个频段。
  9. 如权利要求8所述的方法，其特征在于，根据至少两个频段的模拟射频信号，生成第一信号和第二信号，包括：
    通过包络检波和可控非线性处理，获得基于所述第一频段的模拟射频信号生成的所述第一信号和所述第二信号。
  10. 如权利要求8或9所述的方法，其特征在于，根据所述至少两个频段的模拟射频信号，生成所述第一信号和所述第二信号，包括：
    对所述至少两个频段的模拟射频信号进行合路处理，生成合路信号；
    对所述合路信号进行包络检波处理，生成合路检波信号；
    根据非线性参数，对所述合路检波信号进行非线性处理，生成两路非线性信号；
    将所述两路非线性信号分别与所述第一频段的模拟射频信号相乘，得到所述第一信号和所述第二信号。
  11. 如权利要求8或9所述的方法，其特征在于，根据所述至少两个频段的模拟射频信号，生成所述第一信号和所述第二信号，包括：
    对所述至少两个频段的模拟射频信号进行包络检波处理，生成至少两路检波信号；
    对所述至少两路检波信号进行合路处理，生成合路检波信号；
    根据非线性参数，对所述合路检波信号进行非线性处理，生成两路非线性信号；
    将所述两路非线性信号分别与所述第一频段的模拟射频信号相乘，得到所述第一信号和所述第二信号。
  12. 如权利要求8～11任一项所述的方法，其特征在于，在根据至少两个频段的模拟射频信号，生成第一信号和第二信号之前，所述方法还包括：
    将至少两个频段的模拟基带信号进行变频处理，生成所述至少两个频段的模拟射频信号。
  13. 如权利要求12所述的方法，其特征在于，在将所述至少两个频段的模拟基带信号进行变频处理之前，所述方法还包括：
    将至少两个频段的数字基带信号转换成所述至少两个频段的模拟基带信号。
  14. 如权利要求8～13任一项所述的方法，其特征在于，所述方法还包括：
    将所述两路信号进行功率放大处理，生成一路射频信号，所述射频信号的频谱中包含所述至少两个频段。
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