CN103518331A

CN103518331A - Transmitter and method for signal transmission

Info

Publication number: CN103518331A
Application number: CN201380000296.0A
Authority: CN
Inventors: 黄伟; 叶四清
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2013-04-24
Filing date: 2013-04-24
Publication date: 2014-01-15
Anticipated expiration: 2033-04-24
Also published as: WO2014172849A1; CN103518331B

Abstract

An embodiment of the invention provides a transmitter and a method for signal transmission. The transmitter comprises: a CFR module, a main power amplifier branch comprising a first DAC and a first PA, an auxiliary power amplifier branch comprising a second DAC and a second PA, and a combiner module, the CFR module is used for receiving an input signal, performing crest factor reduction upon the input signal to obtain a main signal and a cancellation signal, and transmitting the main signal to the main power amplifier branch and the cancellation signal to the auxiliary power amplifier branch, the first DAC is used for performing digital-to-analogue conversion upon the main signal, the first PA is used for power amplification of the main signal via the digital-to-analogue conversion, the second DAC is used for performing digital-to-analogue conversion upon the cancellation signal, the second PA is used for power amplification of the cancellation signal via the digital-to-analogue conversion, and the combiner module is used for executing combination of the main signal via the power amplification and the cancellation signal via the power amplification, thereby improving the quality of the transmission signal, and improving the peak transmission rate of the whole communication system.

Description

Transmitter and the method for launching for signal

Technical field

The present invention relates to the communications field, and more specifically, a kind of method that relates to transmitter and launch for signal.

Background technology

Along with the development of the communication technology, 3G (Third Generation) Moblie technology (3 ^rdgeneration, 3G) and the 4th third-generation mobile communication technology (4 ^thgeneration, 4G) application, high order modulation multicarrier transmitter is generally adopted.The basic demand that height is linear, high efficiency has become modern communications transmitter of transmitter system.

In order to realize high efficiency, high linear, the comparatively general transmitter of industry generally includes peak-to-average force ratio inhibition (Crest Factor Reduction, CFR) module at present.Baseband signal is after CFR module, and peak-to-average force ratio can be reduced to an acceptable level of power amplifier.

Wherein, CFR module can, by the peak power reduction of input signal, for example, can make by the anti-phase mode that offsets signal that superposes the peak power reduction of input signal.Thereby, the rollback amount of power amplifier is reduced, reach and improve the efficiency of power amplifier and linear object.Although CFR module has reached the object that reduces signal peak-to-average ratio, can make Signal-to-Noise step-down, transmission signal quality (can pass through error vector magnitude (Error Vector Magnitude, EVM) characterizes) worsens.And the deterioration of transmission signal quality can have influence on the hardware circuit solution of whole communication system.

Summary of the invention

A kind of method that the embodiment of the present invention provides transmitter and launches for signal, can improve transmission signal quality, thereby improve the hardware circuit solution of whole communication system.

First aspect, provides a kind of transmitter, comprising: peak-to-average force ratio suppresses CFR module, main power amplifier branch road, auxiliary power amplifier branch road He He road module, this main power amplifier branch road comprises the first digital to analog converter DAC and the first power amplifier PA, this auxiliary power amplifier branch road comprises the 2nd DAC and the 2nd PA; Wherein, this CFR module is used for receiving input signal, and this input signal is carried out to peak-to-average force ratio inhibition, to obtain main signal and to offset signal; The one DAC is for this main signal is carried out to digital-to-analogue conversion process, and a PA processes for this main signal after digital-to-analogue conversion is processed is carried out to power amplification; The 2nd DAC carries out digital-to-analogue conversion process for this being offseted to signal, and the 2nd PA carries out power amplification and processes for this after digital-to-analogue conversion is processed being offseted to signal; Gai He road module offsets signal for this main signal to after power amplification is processed and this after power amplification is processed and carries out and close road and process to obtain output signal.

In conjunction with first aspect, in the possible implementation of the first of first aspect, this auxiliary power amplifier branch road also comprises pulse stretcher and pulse shortener; Wherein, this pulse stretcher is carried out pulse stretching and is processed for this before power amplification is processed being offseted to signal, this pulse shortener offsets signal for Gai He road module to this main signal after power amplification is processed and this after power amplification is processed and carries out and close before road processes to obtain this output signal, this after power amplification is processed is offseted to signal and carry out process of pulse-compression.

In the possible implementation of the first of first aspect or first aspect, this transmitter also comprises digital pre-distortion DPD module; Wherein, this DPD module offsets signal combine digital pre-distortion for this main signal to before digital-to-analogue conversion is processed and/or this before digital-to-analogue conversion is processed.

In the possible implementation of the second of first aspect, in the third possible implementation of first aspect, this transmitter also comprises feedback branch; Wherein, this feedback branch is for feeding back to this DPD module by feedback signal, and this feedback signal is that this main signal after power amplification is processed, this after power amplification processing are offseted at least one in signal and this output signal; This DPD module specifically for: according to this feedback signal, obtain the channel characteristic of branch road corresponding to this feedback signal, and according to this channel characteristic combine digital pre-distortion.

In the third possible implementation of first aspect, in the 4th kind of possible implementation of first aspect, this feedback branch is a public feedback branch, and this feedback branch comprises three elections switch; Wherein, this three elections switch is controlled this main power amplifier branch road, auxiliary power amplifier branch road He He road module is connected with this DPD module, to control this main signal after power amplification is processed, this after power amplification is processed, offsets signal and this output signal to the feedback of this DPD module.

In the possible implementation of the second of first aspect, the 4th kind of possible implementation of the third possible implementation of first aspect or first aspect, in the 5th kind of possible implementation of first aspect, this transmitter also comprises an ADC, error power amplifier branch road, this error power amplifier branch road comprises the 3rd DAC and the 3rd PA, and this main power amplifier branch road also comprises the first combiner unit; Wherein, an ADC is for carrying out analog-to-digital conversion process to this main signal after power amplification is processed; This DPD module specifically for: the inversion signal of this main signal after an ADC processes is carried out to addition process with this main signal of processing without this main power amplifier branch road and obtains error signal, and this error signal is sent to this error power amplifier branch road; The 3rd DAC is used for: this error signal is carried out to digital-to-analogue conversion process, and the 3rd PA processes for this error signal after digital-to-analogue conversion is processed is carried out to power amplification; This first combiner unit is used for: this main signal of processing through power amplification and processing without an ADC and this error signal after power amplification is processed are closed to road and process and obtain this main signal through power amplification processing and Error processing; Gai He road module specifically for: to this main signal through power amplification processing and Error processing and through power amplification, process this offset signal and carry out and close road and process to obtain output signal.

In the possible implementation of the second of first aspect, the third possible implementation of first aspect, in the 4th kind of possible implementation of first aspect or the 5th kind of possible implementation of first aspect, in the 6th kind of possible implementation of first aspect, the one DAC comprises the first sub-DAC and the second sub-DAC, the one PA comprises the first sub-PA and the second sub-PA, and this main power amplifier branch road also comprises the second combiner unit; Wherein, this DPD module specifically for: by this main signal, obtain the first component signal and second component signal; This first sub-DAC processes for this first component signal being carried out to digital-to-analogue conversion this first component signal obtaining through power amplification processing, and this first sub-PA is for carrying out power amplification processing to this first component signal of processing through power amplification; This second sub-DAC processes for this second component signal being carried out to digital-to-analogue conversion this second component signal obtaining through power amplification processing, and this second sub-PA is for carrying out power amplification processing to this second component signal of processing through power amplification; This second combiner unit is processed and is obtained this main signal of processing through power amplification for this first component signal of processing through power amplification and this second component signal of processing through power amplification being closed to road.

Second aspect, provides a kind of transmitter, comprising: digital pre-distortion DPD module, the first digital to analog converter DAC, the first power amplifier PA, the first analog to digital converter ADC, the 2nd DAC, the 2nd PA and close road module; Wherein, this DPD module is used for receiving input signal; The one DAC is for this input signal is carried out to digital-to-analogue conversion process, and a PA is for this input signal execution power amplification after digital-to-analogue conversion is processed is processed, to obtain this input signal after power amplification is processed; The one ADC is for this input signal execution analog-to-digital conversion process after power amplification is processed to this, this DPD module is also for carrying out addition process to obtain error signal by the inversion signal of this input signal after analog-to-digital conversion process and this input signal of processing without a DAC, the 2nd DAC is for carrying out digital-to-analogue conversion process to this error signal, and the 2nd PA for this error signal after digital-to-analogue conversion is processed is carried out to power amplification, process, to obtain this error signal after power amplification is processed; Gai He road module is carried out and is closed road and process to obtain output signal for this input signal that this is processed and processed without an ADC through power amplification and this this error signal after power amplification is processed.

In conjunction with second aspect, in the possible implementation of the first of second aspect, this transmitter also comprises feedback branch; Wherein, this feedback branch is used for: feedback signal is fed back to DPD module, and this feedback signal comprises this this input signal after power amplification is processed, this this error signal after power amplification is processed and at least one of this output signal; This DPD module specifically for: according to this feedback signal to this input signal combine digital pre-distortion.

In conjunction with the possible implementation of the first of second aspect, in the possible implementation of the second of second aspect, this feedback branch is a public feedback branch, and this feedback branch comprises three elections switch; Wherein, this three elections switch is for controlling this this input signal after power amplification is processed, this this error signal after power amplification is processed and this output signal to the feedback of this DPD module.

The third aspect, provides a kind of method for signal transmitting, comprising: receive input signal, this input signal is entered to peak-to-average force ratio and suppress, to obtain main signal and to offset signal; This main signal is carried out to digital-to-analogue conversion process, and this main signal after digital-to-analogue conversion is processed is carried out to power amplification and process; This is offseted to signal and carry out digital-to-analogue conversion process, and this after digital-to-analogue conversion is processed offseted to signal carry out power amplification and process; This main signal after power amplification is processed and this after power amplification is processed are offseted to signal to be carried out and closes road and process to obtain output signal.

In conjunction with the third aspect, in the possible implementation of the first of the third aspect, the method also comprises: this before power amplification is processed offseted to signal and carry out pulse stretching and process; At this main signal to after power amplification is processed and this after power amplification is processed, offset signal and carry out and close before road processes to obtain this output signal, this after power amplification is processed offseted to signal and carry out process of pulse-compression.

In conjunction with the possible implementation of the first of the third aspect or the third aspect, in the possible implementation of the second of the third aspect, the method also comprises: this main signal before digital-to-analogue conversion is processed and/or this before digital-to-analogue conversion is processed are offseted to signal combine digital pre-distortion.

In conjunction with the possible implementation of the second of the third aspect, in the third possible implementation of the third aspect, the method also comprises: obtain feedback signal, this feedback signal is that this main signal after power amplification is processed, this after power amplification is processed are offseted at least one in signal and this output signal; This offsets signal combine digital pre-distortion to this main signal before digital-to-analogue conversion is processed and/or this before digital-to-analogue conversion is processed, comprise: according to this feedback signal, obtain the channel characteristic of branch road corresponding to this feedback signal, and according to this channel characteristic combine digital pre-distortion.

The third possible implementation in conjunction with the possible implementation of the second of the third aspect or the third aspect, in the 4th kind of possible implementation of the third aspect, the method also comprises: this main signal after power amplification is processed is carried out to analog-to-digital conversion process; This offsets signal combine digital pre-distortion to this main signal before digital-to-analogue conversion is processed and/or this before digital-to-analogue conversion is processed, comprising: the inversion signal of this main signal after this analog-to-digital conversion process is carried out to addition process with this main signal of processing without digital-to-analogue conversion and obtain error signal; The method also comprises: this error signal is carried out to digital-to-analogue conversion process, and this error signal after digital-to-analogue conversion is processed is carried out to power amplification and process, to processing through power amplification and closing road without this main signal of analog-to-digital conversion process and this error signal after power amplification is processed and process and obtain this main signal through power amplification processing and Error processing; This offsets signal to this main signal after power amplification is processed and this after power amplification is processed and carries out and close road and process to obtain output signal, comprising: to this main signal through power amplification processing and Error processing and through power amplification, process this offset signal and carry out and close road and process to obtain this output signal.

In conjunction with the possible implementation of the second of the third aspect, the 4th kind of possible implementation of the third possible implementation of the third aspect or the third aspect, in the 5th kind of possible implementation of the third aspect, the method also comprises: by this main signal, obtain the first component signal and second component signal; This carries out digital-to-analogue conversion process to this main signal, and this main signal after digital-to-analogue conversion is processed is carried out to power amplification and process, comprise: this first component signal is carried out to digital-to-analogue conversion and process this first component signal obtaining through power amplification processing, and this first component signal of processing through power amplification is carried out to power amplification processing; This second component signal is carried out to digital-to-analogue conversion and process this second component signal obtaining through power amplification processing, and this second component signal of processing through power amplification is carried out to power amplification processing; To process to obtain this first component signal and close road through this second component signal that power amplification is processed and process and obtain this main signal of processing through power amplification through power amplification.

Fourth aspect, provides a kind of method for signal transmitting, and the method comprises: receive input signal; This input signal is carried out to digital-to-analogue conversion process, and this input signal after digital-to-analogue conversion is processed is carried out to power amplification and process, to obtain this input signal after power amplification is processed; This input signal to this after power amplification is processed is carried out analog-to-digital conversion process, the inversion signal of this input signal after analog-to-digital conversion process and this input signal of processing without digital-to-analogue conversion are carried out to addition process to obtain error signal, this error signal is carried out to digital-to-analogue conversion process, and this error signal after digital-to-analogue conversion is processed is carried out to power amplification and process, to obtain this error signal of processing through power amplification; This is processed and carry out and close road and process to obtain output signal without this input signal of analog-to-digital conversion process and this this error signal after power amplification is processed through power amplification.

In conjunction with fourth aspect, in the possible implementation of the first of fourth aspect, the method also comprises: obtain feedback signal, this feedback signal comprises by this this input signal after power amplification is processed, this this error signal after power amplification is processed and at least one of this output signal; According to this feedback signal, to this input signal combine digital pre-distortion.

Therefore, transmitter in the embodiment of the present invention can carry out peak-to-average force ratio to input signal to be suppressed to obtain main signal and offset signal, by main power amplifier branch road, main signal is carried out to digital-to-analogue conversion processing and power amplification is processed, by auxiliary power amplifier branch road to offseting signal and carry out digital-to-analogue conversion processing and power amplification being processed, and the main signal after power amplification is processed and offset signal and close road and process, make to be recovered at the signal of deterioration, thereby, can improve transmission signal quality, improve the hardware circuit solution of whole communication system.

Accompanying drawing explanation

In order to be illustrated more clearly in the technical scheme of the embodiment of the present invention, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.

Fig. 1 is according to the schematic diagram of the transmitter of the embodiment of the present invention.

Fig. 2 is according to the schematic diagram of the transmitter of another embodiment of the present invention.

Fig. 3 is according to the schematic diagram of the transmitter of another embodiment of the present invention.

Fig. 4 is according to the schematic diagram of the transmitter of another embodiment of the present invention.

Fig. 5 is according to the schematic diagram of the transmitter of another embodiment of the present invention.

Fig. 6 is according to the schematic diagram of the transmitter of another embodiment of the present invention.

Fig. 7 is according to the indicative flowchart of the method for signal transmitting of the embodiment of the present invention.

Fig. 8 is according to the schematic diagram of the transmitter of another embodiment of the present invention.

Fig. 9 is according to the schematic diagram of the transmitter of another embodiment of the present invention.

Figure 10 is according to another embodiment of the present invention for the indicative flowchart of the method for signal transmitting.

Embodiment

Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is the present invention's part embodiment, rather than whole embodiment.Embodiment based in the present invention, those of ordinary skills, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.

Fig. 1 shows according to the schematic diagram of the transmitter 100 of the embodiment of the present invention.

As shown in Figure 1, this transmitter 100 comprises: CFR module 110, main power amplifier branch road 120, auxiliary power amplifier branch road 130 and close road module 140, wherein main power amplifier branch road 120 comprises the first digital to analog converter (Digital to Analog Converter, DAC) the 121 and first power amplifier (Power Amplifier, PA) 122, auxiliary power amplifier branch road 130 comprises the 2nd DAC131 and the 2nd PA132.Wherein, this CFR module 110 is for receiving input signal S (t), this input signal S (t) is carried out to peak-to-average force ratio inhibition, to obtain main signal S ' (t) and to offset signal P (t) (offset signal and also can be referred to as to offset noise signal), and for this main signal S ' (t) is sent to this main power amplifier branch road 120 and this is offseted to signal P (t) and be sent to this auxiliary power amplifier branch road 130.The one DAC121 is for this main signal S ' (t) is carried out to digital-to-analogue conversion process, and a PA122 (t) carries out power amplification processing for this main signal S ' to after digital-to-analogue conversion is processed.The 2nd DAC131 carries out digital-to-analogue conversion process for this being offseted to signal P (t), and the 2nd PA132 carries out power amplification and processes for this after digital-to-analogue conversion is processed being offseted to signal P (t).For this main signal S ' to after power amplification is processed, this (t) and after power amplification is processed offsets signal P (t) and carries out and close road and process to obtain output signal Gai He road module 140.

Transmitter in the embodiment of the present invention can carry out peak-to-average force ratio to input signal to be suppressed to obtain main signal and offset signal, by main power amplifier branch road, main signal is carried out to digital-to-analogue conversion processing and power amplification is processed, by auxiliary power amplifier branch road to offseting signal and carry out digital-to-analogue conversion processing and power amplification being processed, and the main signal after power amplification is processed and offset signal and close road and process, make to be recovered at the signal of deterioration, thereby, can improve transmission signal quality, improve the hardware circuit solution of whole communication system.

In embodiments of the present invention, obtain and offset signal P (t) and main signal S ' mode (t) has a variety of, but all meet S (t)=S ' (t)+P (t), for example, can carry out peak value detection to input signal and process and obtain offseting signal P (t) with filtering, and the inversion signal and input signal S (t) the execution addition process that offset signal P (t) are obtained to main signal S ' (t).

The main signal S ' of the mixer realization that ，He road module 140 can comprise by it in embodiments of the present invention after power amplification is processed processes on signal P (t) the He road that offsets (t) and after power amplification is processed.

In embodiments of the present invention, if main signal S ' (t) and to offset signal P (t) unjustified, can be before being processed by digital-to-analogue conversion, realize the delay alignment of signal, for example, before DAC121, can there is a delay cell, make main signal S ' (t) with offset signal P (t) and align.

In embodiments of the present invention, owing to offseting signal, there is sparse, the feature such as peak power is large and average power is low, can cause for carrying out to offseting signal that the bias voltage of PA of power amplification processing is high, type selecting is with a high standard, thereby bring the problem that cost is high.For head it off, as shown in Figure 2, the auxiliary power amplifier branch road 130 of the transmitter 100 of the embodiment of the present invention can also comprise pulse stretcher 133 and pulse shortener 134; Wherein, this pulse stretcher 133 is carried out pulse stretching and is processed for the signal P (t) that offsets to before power amplification is processed, and this pulse shortener 138 is carried out process of pulse-compression for this after power amplification is processed offseted to signal P (t).Before should be understood that pulse stretcher can be positioned at DAC131, with the signal P (t) that offsets to before digital-to-analogue conversion is processed, carry out pulses switch processing; Also can be between DAC131 and power amplifier 132, with to after digital-to-analogue conversion is processed and the offset signal P (t) of power amplification before processing carry out pulse stretching and process.Therefore, in embodiments of the present invention, owing to offseting signal before being carried out power amplification processing, carry out process of pulse-compression, thereby can reduce the peak power that offsets signal, thereby can reduce costs.

In embodiments of the present invention, as shown in Figure 3, this transmitter 100 can also comprise DPD module 150; Wherein, this DPD module 150 offsets signal P (t) combine digital pre-distortion for the main signal S ' to before digital-to-analogue conversion is processed (t) and before digital-to-analogue conversion is processed.Wherein, for offseting signal, this concrete digital pre-distortion processing can comprise the adjusting of amplitude and phase place etc.; For main signal, this concrete digital pre-distortion is processed the adjusting that can comprise amplitude and phase place, can also comprise delay disposal etc., so that offset signal, aligns with main signal.Certainly, DPD module can not carried out delay disposal to main signal, can in main power amplifier branch road or auxiliary power amplifier branch road, add a delay disposal unit, can carry out delay disposal to the main signal before digital-to-analogue conversion is processed or the signal that offsets before digital-to-analogue conversion is processed, so that main signal and offset signal alignment.In embodiments of the present invention, as shown in Figure 3, this DPD module can comprise two submodule M_DPD151 and A_DPD152, wherein, M_DPD151 is for being connected with main power amplifier branch road 120, with to (t) combine digital pre-distortion of main signal S ', A_DPD152 is for being connected with auxiliary power amplifier branch road 130, with to offseting signal P (t) combine digital pre-distortion.

In embodiments of the present invention, as shown in Figure 3, this transmitter 100 can also comprise feedback branch 160; Wherein, this feedback branch 160 for this (t), after power amplification is processed by the main signal S ' after power amplification is processed, offset signal P (t) and output signal at least one feed back to DPD module 150 so that DPD module 150 offsets signal P (t) combine digital pre-distortion to the main signal S ' before digital-to-analogue conversion is processed according to the feedback of this feedback branch 160 (t) and/or before digital-to-analogue conversion processing.Thereby, DPD module 150 can be according to the feedback of feedback branch 160, obtain the channel characteristic of main power amplifier branch road 120 and/or the channel characteristic of auxiliary power amplifier branch road 130, and the main signal S ' before digital-to-analogue conversion is processed is offseted to signal P (t) combine digital pre-distortion (t) and/or before digital-to-analogue conversion is processed.

In embodiments of the present invention, as shown in Figure 3, this feedback branch 160 can be a public feedback branch (the present invention is not restricted to this), and as shown in Figure 3, this feedback branch 160 can also comprise three elections switch 165; Wherein, this three elections switch 165 for controlling this main power amplifier branch road 120, auxiliary power amplifier branch road 130He He road module 140 is connected with this feedback branch 160.Therefore,, in the time need to obtaining the channel characteristic of main power amplifier branch road 120, can be connected with this DPD module 150 by this three elections switch 170，Shi winner power amplifier branch road; In the time need to obtaining the channel characteristic of auxiliary power amplifier branch road 130, can pass through this three elections switch 165, auxiliary power amplifier branch road 130 is connected with this DPD module 150; When needing the composite characteristic of the main power amplifier branch road 120 of overall merit and auxiliary power amplifier branch road 130, can pass through three elections switch 165, feedback branch 160He He road module 140 is connected, make DPD module 150 according to output signal combine digital pre-distortion.Because feedback branch 160 is a public feedback branch, can reduce expenses.

Should be understood that in embodiments of the present invention, except the structure shown in above-mentioned Fig. 1 to Fig. 3, the transmitter 100 of the embodiment of the present invention can also be other structure.

For example, as shown in Figure 4, main power amplifier branch road 120 can also comprise the first modulator 123, with the main signal S ' to after digital-to-analogue conversion is processed, (t) carry out modulation treatment, auxiliary power amplifier branch road 130 can also comprise the second modulator 135, with the signal P (t) that offsets to after digital-to-analogue conversion, carries out modulation treatment.The algorithm that CRF module 110 shown in Fig. 4 adopts is Clip-filter algorithm, a branch road of CFR module 110 carries out delay disposal to input signal S (t), another branch road, input signal S (t) is carried out to peak value and detects with filtering and process to obtain offseting signal P (t), to the input signal S (t) of delayed processing and the inversion signal that offsets signal P (t) carry out addition process obtain main signal S ' (t)=S (t)-P (t).

Again for example, as shown in Figure 5, this transmitter 100 can also comprise the first analog to digital converter (Analog to Digital Converter, ADC) 170, error power amplifier branch road 180, this error power amplifier branch road 180 can comprise the 3rd DAC171 and the 3rd PA182, and this main power amplifier branch road can also comprise the first combiner unit 124; Wherein,

The one ADC170 can carry out analog-to-digital conversion process for the main signal S (t) to after power amplification is processed (can be to this main signal combine digital pre-distortion before main signal is carried out to analog-to-digital conversion process, for example, amplitude and phasing etc.); This DPD module 150 is carried out addition process specifically for the inversion signal of the main signal S (t) to after an ADC170 processes with the main signal S (t) processing without main power amplifier branch road 120 and is obtained error signal (wherein, this addition process can realize by the adder in 150 shown in figure and delayer), and this error signal is sent to error power amplifier branch road 180; In error power amplifier branch road 180, the 3rd DAC181 is for this error signal is carried out to digital-to-analogue conversion process, and the 3rd PA182 carries out power amplification for the error signal to after digital-to-analogue conversion is processed and processes; The first combiner unit 124 is processed and is obtained the main signal through power amplification processing and Error processing for this main signal of processing through power amplification and processing without an ADC and this error signal after power amplification is processed being closed to road; Correspondingly ，He road module 140 specifically for: the main signal through power amplification processing and Error processing and the signal that offsets processed through power amplification are carried out and are closed road and process to obtain output signal.Thereby, can reduce the distortion that transmits, improve the hardware circuit solution of whole communication system.And further, owing to having realized the inversion signal of the main signal after power amplification is processed and the addition process of the main signal of not processed by digital-to-analogue conversion at numeric field, compare at analog domain and realize this addition process, do not need attenuator and phase shifter, and signal can be alignd and be added better.

Again for example, as shown in Figure 6, a DAC121 can comprise the first sub-DAC121-1 and the second sub-DAC121-2, and a PA can comprise the first sub-PA122-1 and the second sub-PA122-2, and this main power amplifier branch road 120 can also comprise the second combiner unit 125; Wherein, digital pre-distortion (Digital Pre-Distortion, DPD) module 150 specifically for: by this main signal, obtain the first component signal and the second separation signal (specifically can realize by the M_DPD in DPD, be specifically as follows and this main signal is carried out to power division obtain two paths of signals, and respectively this two paths of signals is carried out obtaining the first component signal and second component signal after amplitude and phase place adjustment); This first sub-DAC121-1 processes for this first component signal being carried out to digital-to-analogue conversion this first component signal obtaining through power amplification processing, and this first sub-PA122-2 is for carrying out power amplification processing to this first component signal of processing through power amplification; This second sub-DAC121-2 processes for this second component signal being carried out to digital-to-analogue conversion this second component signal obtaining through power amplification processing, and this second sub-PA122-2 is for carrying out power amplification processing to this second component signal of processing through power amplification; This second combiner unit 125(specifically can be in figure mixer 125) for this first component signal of processing through power amplification and this second component signal of processing through power amplification being closed to road, process and obtain this main signal of processing through power amplification.Thereby ，He road module 140 can be closed the main signal of processing through power amplification and the signal that offsets of processing through power amplification road and processes and obtain output signal.

Should understand, in embodiments of the present invention, transmitter 100 not only meets the following conditions: transmitter 100 comprises an ADC170, error power amplifier branch road 180, and error power amplifier branch road 180 comprises the 3rd DAC171 and the 3rd PA182, and main power amplifier branch road also comprises the first combiner unit 124; Also meet the following conditions: a DAC121 comprises the first sub-DAC121-1 and the second sub-DAC121-2, a PA comprises the first sub-PA122-1 and the second sub-PA122-2 simultaneously, and this main power amplifier branch road 120 also comprises the second combiner unit 125.Certainly, meeting under above condition, transmitter 100 can also comprise feedback branch 160, and main power amplifier branch road 120 and auxiliary power amplifier branch road 130 include modulator etc., and auxiliary power amplifier branch road 130 also comprises and draws together pulse stretcher 133 and pulse shortener 134.

Therefore, transmitter in the embodiment of the present invention comprises CFR module, the main power amplifier branch road that comprises a DAC and a PA, comprise the auxiliary power amplifier branch road of the 2nd DAC and the 2nd PA and close road module, wherein, this CFR module is used for receiving input signal, this input signal is carried out to peak-to-average force ratio inhibition, to obtain main signal and to offset signal, and be sent to this auxiliary power amplifier branch road for this main signal being sent to this main power amplifier branch road and this being offseted to signal, the one DAC is for carrying out digital-to-analogue conversion process to this main signal, and the one PA for this main signal after digital-to-analogue conversion is processed is carried out to power amplification, process, the 2nd DAC carries out digital-to-analogue conversion process for this being offseted to signal, and the 2nd PA for this after digital-to-analogue conversion is processed being offseted to signal, carry out power amplification and process, Gai He road module offsets signal for this main signal to after power amplification is processed and this after power amplification is processed and carries out and close road and process to obtain output signal, thereby, transmitter in the embodiment of the present invention can improve transmission signal quality, improve the hardware circuit solution of whole communication system.

In order to be more expressly understood the present invention, the method 200 for signal transmitting of transmitter 100 execution that adopt the embodiment of the present invention is described below in conjunction with Fig. 7.

Fig. 7 is according to the indicative flowchart of the method 200 for signal transmitting of the embodiment of the present invention.The method 200 can be carried out by transmitter 100.As shown in Figure 7, the method 200 comprises:

S210, receives input signal, and this input signal is carried out to peak-to-average force ratio inhibition, to obtain main signal and to offset signal.

S220, carries out digital-to-analogue conversion process to this main signal, and this main signal after digital-to-analogue conversion is processed is carried out to power amplification and process.

S230, offsets signal to this and carries out digital-to-analogue conversion process, and this after digital-to-analogue conversion is processed offseted to signal carries out power amplification and process.

S240, offsets signal to this main signal after power amplification is processed and this after power amplification is processed and carries out and close road and process to obtain output signal.

Therefore, in the embodiment of the present invention, can carry out peak-to-average force ratio to input signal suppresses to obtain main signal and offset signal, by main power amplifier branch road, main signal is carried out to digital-to-analogue conversion processing and power amplification is processed, by auxiliary power amplifier branch road to offseting signal and carry out digital-to-analogue conversion processing and power amplification being processed, and the main signal after power amplification is processed and offset signal and close road and process, make to be recovered at the signal of deterioration, thereby, can improve transmission signal quality, improve the hardware circuit solution of whole communication system.

For the ease of understanding, below in conjunction with Fig. 1, the method 200 for signal transmitting according to the embodiment of the present invention is described.As shown in Figure 1, CFR module 110 receives input signal S (t), based on this input signal S (t), obtain main signal S ' (t) and offset signal P (t), and this main signal S ' (t) is sent to main power amplifier branch road 120 and this is offseted to signal P (t) and be sent to auxiliary power amplifier branch road 130.The one DAC121 (t) carries out digital-to-analogue conversion process to this main signal S ', and a PA122 (t) carries out power amplification processing to this main signal S ' after digital-to-analogue conversion is processed.The 2nd DAC131 offsets signal P (t) to this and carries out digital-to-analogue conversion process, and the 2nd PA132 offsets signal P (t) to this after digital-to-analogue conversion is processed and carries out power amplification and process.Closing the offset signal P (t) of 140 pairs of the road modules main signal S ' after power amplification is processed (t) and after power amplification is processed carries out and closes road and process to obtain output signal.

In embodiments of the present invention, if main signal and to offset signal unjustified can, before being processed by digital-to-analogue conversion, realize the delay alignment of signal.

In embodiments of the present invention, owing to offseting signal, there is sparse, the feature such as peak power is large and average power is low, can cause for carrying out to offseting signal that the bias voltage of PA of power amplification processing is high, type selecting is with a high standard, thereby bring the problem that cost is high.For head it off, in embodiments of the present invention, the method 200 can also comprise: this before power amplification is processed offseted to signal and carry out pulse stretching and process; At this main signal to after power amplification is processed and this after power amplification is processed, offset signal and carry out and close before road processes to obtain this output signal, this after power amplification is processed offseted to signal and carry out process of pulse-compression.Wherein, pulse stretching is processed and can be carried out by the pulse stretcher 133 in transmitter 100, and process of pulse-compression can be carried out by the pulse shortener 134 in transmitter 100.Therefore, in embodiments of the present invention, owing to offseting signal P (t) before being carried out power amplification processing, carry out process of pulse-compression, thereby can reduce the peak power that offsets signal P (t), thereby can reduce costs.

In embodiments of the present invention, the method 200 can also comprise: this main signal before digital-to-analogue conversion is processed and/or this before digital-to-analogue conversion is processed are offseted to signal combine digital pre-distortion, specifically can the DPD module 150 in transmitter 100 carry out.

In embodiments of the present invention, the method 200 can also comprise: obtain feedback signal, this feedback signal is that this main signal after power amplification is processed, this after power amplification is processed are offseted at least one in signal and this output signal; Above-mentioned this main signal before digital-to-analogue conversion is processed and/or this before digital-to-analogue conversion is processed are offseted to signal combine digital pre-distortion, can comprise: according to this feedback signal, obtain the channel characteristic of branch road corresponding to this feedback signal, and according to this channel characteristic combine digital pre-distortion.Wherein, for offseting signal, this concrete digital pre-distortion processing can comprise the adjusting of amplitude and phase place etc.; For main signal, this concrete digital pre-distortion is processed the adjusting that can comprise amplitude and phase place, can also comprise delay disposal etc., so that offset signal, aligns with main signal.Certainly, while can lie in pre-distortion, main signal is not carried out to delay disposal yet, can carry out delay disposal to the main signal of processing through power amplification or the signal that offsets of processing through power amplification, so that main signal and offset signal alignment.

In embodiments of the present invention, can also carry out analog-to-digital conversion process to the main signal after power amplification is processed, then the inversion signal of the main signal after this analog-to-digital conversion process be carried out to addition process with the main signal of processing without digital-to-analogue conversion and obtain error signal; Then, this error signal is carried out to digital-to-analogue conversion process, and this error signal after digital-to-analogue conversion is processed is carried out to power amplification and process, to processing through power amplification and closing road without this main signal of analog-to-digital conversion process and this error signal after power amplification is processed and process and obtain the main signal through power amplification processing and Error processing; Then to the main signal through power amplification processing and Error processing and through power amplification, process this offset signal and carry out and close road and process to obtain this output signal.

In embodiments of the present invention, can also obtain the first component signal and second component signal (be specifically as follows and this main signal is carried out to power division obtain two paths of signals, and respectively this two paths of signals is carried out obtaining the first component signal and second component signal after amplitude and phase place adjustment) by main signal; Then can to this first component signal, carry out digital-to-analogue conversion respectively and process this first component signal obtaining through power amplification processing, and this first component signal of processing through power amplification is carried out to power amplification processing; This second component signal is carried out to digital-to-analogue conversion and process this second component signal obtaining through power amplification processing, and this second component signal of processing through power amplification is carried out to power amplification processing; To process to obtain this first component signal and close road through this second component signal that power amplification is processed and process and obtain this main signal of processing through power amplification through power amplification.

In order to be more expressly understood the present invention, below with reference to Fig. 4, specifically describe the method 200 for signal transmitting according to the embodiment of the present invention.Be specially: CFR module 110 receives input signal S (t) afterwards, article one, branch road is carried out delay disposal to described input signal S (t), described input signal is carried out to peak value detection to another branch road and filtering is processed, obtain offseting signal P (t), the input signal S (t) of delayed processing is carried out to addition process with the inversion signal that offsets signal P (t), obtain main signal S ' (t)=S (t)-P (t), CRF module by main signal S ' (t) with offset signal P (t) and be sent to DPD module 150, wherein, main signal S ' (t) can be sent to for main signal S ' (t) is carried out the submodule M_DPD151 of digital pre-distortion processing and will offset signal P (t) being sent to for carry out the submodule A_DPD152 of digital pre-distortion processing to offseting signal P (t), DPD module 150 respectively to main signal S ' (t) and offset signal P (t) and carry out digital pre-distortion processing, for example, main signal S ' (t) and offset the alignment of signal P (t), the adjustment of phase place and amplitude etc., wherein, DPD module 150 can be obtained respectively according to the feedback of feedback path 160 channel characteristic of main power amplifier branch road 120 and auxiliary power amplifier branch road 130, and according to the channel characteristic combine digital pre-distortion of main power amplifier branch road 120 and auxiliary power amplifier branch road 130, DPD module 150 (t) is sent to main power amplifier branch road 120 by the main signal S ' processing through digital pre-distortion, and the signal P (t) that offsets processing through digital pre-distortion is sent to auxiliary power amplifier branch road 130, a DAC121 in main power amplifier branch road 120 (t) carries out digital-to-analogue conversion process to main signal S ', then be sent to the first modulator 123, by the first modulator, 123 couples of main signal S ' that process through digital-to-analogue (t) carry out modulation treatment and are sent to the first power amplifier 122,122 couples of main signal S ' through modulation treatment of power amplifier (t) carry out power amplification and process, and then send it to and close road module 140, the signal P (t) that offsets that 133 pairs of pulse stretchers in auxiliary power amplifier branch road 130 are processed through digital pre-distortion carries out pulse stretching processing, the 2nd DAC131 carries out digital-to-analogue conversion processing by the signal P (t) that offsets processing through pulse stretching, then be sent to the second modulator 135, by the second modulator, 135 couples of signal P (t) that offset that process through digital-to-analogue conversion carry out modulation treatment and are sent to the 2nd PA134, the 2nd PA134 carries out power amplification processing to the signal that offsets through modulation treatment, the signal P (t) that offsets that 134 pairs of pulse shorteners are processed through power amplification carries out process of pulse-compression, then send it to and close road module 140, close offset signal P (t) execution of module 140 couples of main signal S ' that process through power amplification in road (t) and after power amplification is processed and close road processing, and obtain output signal, and obtain the less RF high power signal of distortion, can be by the main signal S ' processing through amplification (t), through process of pulse-compression offset signal P (t) or input signal is sent to feedback path 160 by three elections switch 165, then be sent to DPD module 150, thereby DPD module 150 can be according to the feedback of feedback path 160 respectively to main signal S ' (t) and offset signal P (t) and carry out digital pre-distortion processing.

Therefore, in the embodiment of the present invention, by receiving input signal, this input signal is carried out to peak-to-average force ratio inhibition, to obtain main signal and to offset signal, this main signal is carried out to digital-to-analogue conversion process, and this main signal after digital-to-analogue conversion is processed is carried out to power amplification and process, this is offseted to signal and carry out digital-to-analogue conversion process, and this after digital-to-analogue conversion is processed offseted to signal carry out power amplification and process, this main signal after power amplification is processed and this after power amplification is processed are offseted to signal to be carried out and closes road and process to obtain output signal, make to be recovered at the signal of deterioration, thereby can improve transmission signal quality, improve the hardware circuit solution of whole communication system.

Fig. 8 is according to the schematic block diagram of the transmitter 300 of the embodiment of the present invention.As shown in Figure 8, this transmitter 300 comprises DPD module 310, the one DAC321, a PA322, an ADC331, the 2nd DAC341, the 2nd PA342 and close road module 350; Wherein, this DPD module 310 is for receiving input signal; The one DAC321 is for this input signal is carried out to digital-to-analogue conversion process, and a PA322 processes for this input signal after digital-to-analogue conversion is processed is carried out to power amplification; The one ADC331 is for carrying out analog-to-digital conversion process to this input signal after power amplification is processed, this DPD module 310 is also for carrying out addition process to obtain error signal by the inversion signal of this input signal after analog-to-digital conversion process and undressed this input signal, the 2nd DAC341 is for this error signal is carried out to digital-to-analogue conversion process, and the 2nd PA342 processes for this error signal after digital-to-analogue conversion is processed is carried out to power amplification; Gai He road module 350 is carried out and is closed road and process to obtain output signal for this input signal to after power amplification is processed and this error signal after power amplification is processed.

Transmitter in the embodiment of the present invention can carry out analog-to-digital conversion process to input data and obtain inversion signal, inversion signal and undressed input signal are carried out to addition process to obtain error signal, this error signal is carried out to digital-to-analogue conversion process and power amplification processing, finally the input signal after power amplification is processed and error signal are carried out and closed road and process to obtain output signal, make to be recovered at the signal of deterioration, thereby, can improve transmission signal quality, improve the hardware circuit solution of whole communication system.

In embodiments of the present invention, DPD module 310 shown in Fig. 8 can comprise delay submodule 311 and adder 312, wherein, postpone submodule 311 for undressed input signal is alignd with the inversion signal of input signal after analog-to-digital conversion process, adder is added the inversion signal of undressed input signal and the input signal after analog-to-digital conversion process, obtains error signal.Certainly, DPD module also can have other implementation method to obtain error signal, and the embodiment of the present invention is not carried out any restriction.

In embodiments of the present invention, the road of He shown in Fig. 8 module 350 comprises delay submodule 351 and mixer 352, delay submodule 351 can be so that the input signal after power amplification is processed aligns with the error signal after power amplification is processed, and mixer 352 makes to close road processing through the error signal of the input signal of power amplification processing and power amplification processing and obtains output signal.

In embodiments of the present invention, as shown in Figure 9, this transmitter 300 can also comprise feedback branch 350; Wherein, this feedback branch 350 feeds back to this DPD module 310 at least one that this input signal after power amplification is processed, this error signal after power amplification is processed is fed back to this DPD module and this output signal so that this DPD module 310 according to the feedback of this feedback branch to this input signal combine digital pre-distortion.For example, input signal is carried out the adjustment etc. of amplitude and phase place.

In embodiments of the present invention, as shown in Figure 9, this feedback branch 350 can be a public feedback branch, and this feedback branch 350 can also comprise can three elections switch 355; Wherein, this three elections switch 355 is for controlling the feedback to this DPD module by this input signal after power amplification is processed, this error signal after power amplification is processed and this output signal.Therefore, because feedback branch 350 is public feedback branch, thereby can reduce expenses.

In embodiments of the present invention, as shown in Figure 9, this transmitter 300 can also comprise at the first modulator 323(between the first DAC321 and a PA322 for realizing the modulation treatment of the input signal after digital-to-analogue conversion processing and before power amplification processing), at the first demodulator 332(between the first PA322 and an ADC for realizing the demodulation process of the input signal after power amplification is processed and before power analog-to-digital conversion process), and at the second modulator 343(between the second DAC341 and the 2nd PA342 for realizing after digital-to-analogue conversion is processed and the modulation treatment of the error signal of power amplification before processing).

Therefore, because the transmitter in the embodiment of the present invention comprises: DPD module, the one DAC, the one PA, the one ADC, the 2nd DAC, the 2nd PA and close road module, wherein, this DPD module is used for receiving input signal, the one DAC is for carrying out digital-to-analogue conversion process to this input signal, and the one PA for this input signal after digital-to-analogue conversion is processed is carried out to power amplification, process, the one ADC is for carrying out analog-to-digital conversion process to this input signal after power amplification is processed, this DPD module is also for carrying out addition process to obtain error signal by the inversion signal of this input signal after analog-to-digital conversion process and undressed this input signal, the 2nd DAC is for carrying out digital-to-analogue conversion process to this error signal, and the 2nd PA for this error signal after digital-to-analogue conversion is processed is carried out to power amplification, process, Gai He road module is carried out and is closed road and process to obtain output signal for this input signal to after power amplification is processed and this error signal after power amplification is processed, thereby, can reduce the distortion that transmits, improve the hardware circuit solution of whole communication system.And further, owing to having realized the addition process of inversion signal and the not processed input signal of the input signal after power amplification is processed at numeric field, compare at analog domain and realize this addition process, do not need the use of attenuator and phase shifter, and signal can be alignd and be added better.

In order to be more expressly understood the present invention, below with reference to Figure 10, the method 400 for signal transmitting according to the embodiment of the present invention is described.The method 400 can be carried out by transmitter 300.As shown in figure 10, the method 400 comprises:

S410, receives input signal.

S420, carries out digital-to-analogue conversion process to this input signal, and this input signal after digital-to-analogue conversion is processed is carried out to power amplification and process, to obtain this input signal after power amplification is processed.

S430, this input signal to this after power amplification is processed is carried out analog-to-digital conversion process, the inversion signal of this input signal after analog-to-digital conversion process and this input signal of processing without digital-to-analogue conversion are carried out to addition process to obtain error signal, this error signal is carried out to digital-to-analogue conversion process, and this error signal after digital-to-analogue conversion is processed is carried out to power amplification and process, to obtain this error signal of processing through power amplification.

S440, processes and carries out and close road and process to obtain output signal without this input signal of analog-to-digital conversion process and this this error signal after power amplification is processed through power amplification this.

For the ease of understanding, below in conjunction with Fig. 8, describe according to the method 400 of the embodiment of the present invention.DPD310 module receives input signal.The one DAC321 carries out digital-to-analogue conversion process to this input signal, and a PA322 carries out power amplification processing to this input signal after digital-to-analogue conversion is processed.The one ADC331 carries out analog-to-digital conversion process to this input signal after power amplification is processed, this DPD module is carried out subtraction process to obtain error signal by this input signal after analog-to-digital conversion process and undressed this input signal, the 2nd DAC341 carries out digital-to-analogue conversion process to this error signal, and the 2nd PA342 carries out power amplification processing to this error signal after digital-to-analogue conversion is processed.Closing this input signal after power amplification is processed of 350 pairs of road modules and this error signal after power amplification is processed carries out and closes road and process to obtain output signal.

In embodiments of the present invention, the method 400 can also comprise: obtain feedback signal, this feedback signal comprises by this this input signal after power amplification is processed, this this error signal after power amplification is processed and at least one of this output signal; According to this feedback signal, to this input signal combine digital pre-distortion.

In order to be more expressly understood the present invention, below with reference to transmitter illustrated in fig. 9, the method 400 for signal transmitting according to the embodiment of the present invention is described.Be specially: DPD module 310 is obtained input signal, and the output signal that can obtain according to the input signal after power amplification is processed of feedback branch 350 feedback, error signal Huo He road module after power amplification is processed, to input signal combine digital pre-distortion, for example, adjustment of amplitude and phase place etc.; DPD module 310Yi road is sent to a DAC321 by input signal, and another road is sent to its included delay submodule 311 by input signal; The one DAC321 carries out digital-to-analogue conversion processing by input signal, and the input signal after digital-to-analogue conversion is processed is sent to the first modulator 323; The input signal of the first 323 pairs of modulators after digital-to-analogue conversion is processed carried out modulation treatment, and the input signal after modulation treatment is sent to the first power amplifier 322; The input signal of the first 322 pairs, power amplifier after modulation treatment carried out power amplification and processed, and then the input signal of processing through power amplification is sent to respectively and closes road module 350 and the first demodulator 332; The input signal that the first 332 pairs of demodulators are processed through power amplification is carried out demodulation process, and the input signal after demodulation process is sent to an ADC331; The input signal that the one ADC331 processes upon mediation is carried out analog-to-digital conversion process, and the input signal after analog-to-digital conversion process is sent to DPD module 310; DPD module is carried out addition process to obtain error signal by the input signal after analog-to-digital conversion process and an original input signal through delay disposal, and error signal is sent to the 2nd DAC341; The 2nd DAC341 carries out digital-to-analogue conversion process to error signal, and the error signal of processing through digital-to-analogue conversion is sent to the second modulator 343; The error signal that the second 343 pairs of modulators are processed through digital-to-analogue conversion is carried out modulation treatment, and the error signal through modulation treatment is sent to the second power amplifier 342; The error signal of the second 343 pairs, power amplifier after modulation treatment carried out power amplification and processed, and the error signal after power amplification is processed is sent to and closes road module 350; Closing road module 350 carries out the input signal after power amplification is processed and the error signal after power amplification is processed to close road processing, the input signal after power amplification is processed is carried out to delay disposal, so that the input signal after power amplification is processed aligns with the error signal after power amplification is processed, and the input signal after power amplification is processed and the error signal after power amplification is processed are closed to road and process, thereby obtain the less RF high power signal of distortion.In addition, the output signal that the input signal after power amplification is processed, error signal Huo He road module after power amplification is processed are obtained in control that can be by three elections switch 360 feeds back to DPD module by feedback branch, thereby DPD module can be carried out pre-distortion to input signal according to the feedback of feedback branch.

Therefore, in embodiments of the present invention, by receiving input signal, this input signal is carried out to digital-to-analogue conversion process, and this input signal after digital-to-analogue conversion is processed is carried out to power amplification and process, this input signal after power amplification is processed is carried out to analog-to-digital conversion process, this DPD module is carried out addition process to obtain error signal by the inversion signal of this input signal after analog-to-digital conversion process and undressed this input signal, this error signal is carried out to digital-to-analogue conversion process, and this error signal after digital-to-analogue conversion is processed is carried out to power amplification and process, this input signal after power amplification is processed and this error signal after power amplification is processed are carried out and closed road and process to obtain output signal, make to be recovered at the signal of deterioration, thereby, can reduce the distortion that transmits, improve the hardware circuit solution of whole communication system.And further, owing to having realized the addition process of inversion signal and the not processed input signal of the input signal after power amplification is processed at numeric field, compare at analog domain and realize this addition process, do not need attenuator and phase shifter, and signal can be alignd and be added better.

Those of ordinary skills can recognize, unit and the algorithm steps of each example of describing in conjunction with embodiment disclosed herein, can realize with the combination of electronic hardware or computer software and electronic hardware.These functions are carried out with hardware or software mode actually, depend on application-specific and the design constraint of technical scheme.Professional and technical personnel can specifically should be used for realizing described function with distinct methods to each, but this realization should not thought and exceeds scope of the present invention.

Those skilled in the art can be well understood to, and for convenience and simplicity of description, the specific works process of the system of foregoing description, device and unit, can, with reference to the corresponding process in preceding method embodiment, not repeat them here.

In the several embodiment that provide in the application, should be understood that disclosed system, apparatus and method can realize by another way.For example, device embodiment described above is only schematic, for example, the division of described unit, be only that a kind of logic function is divided, during actual realization, can have other dividing mode, for example a plurality of unit or assembly can in conjunction with or can be integrated into another system, or some features can ignore, or do not carry out.Another point, shown or discussed coupling each other or direct-coupling or communication connection can be by some interfaces, indirect coupling or the communication connection of device or unit can be electrically, machinery or other form.

The described unit as separating component explanation can or can not be also physically to separate, and the parts that show as unit can be or can not be also physical locations, can be positioned at a place, or also can be distributed in a plurality of network element.Can select according to the actual needs some or all of unit wherein to realize the object of the present embodiment scheme.

In addition, each functional unit in each embodiment of the present invention can be integrated in a processing unit, can be also that the independent physics of unit exists, and also can be integrated in Yi Ge unit two or more unit.

If described function usings that the form of SFU software functional unit realizes and during as production marketing independently or use, can be stored in a computer read/write memory medium.Understanding based on such, the part that technical scheme of the present invention contributes to prior art in essence in other words or the part of this technical scheme can embody with the form of software product, this computer software product is stored in a storage medium, comprise that some instructions are with so that a computer equipment (can be personal computer, server, or the network equipment etc.) carry out all or part of step of method described in each embodiment of the present invention.And aforesaid storage medium comprises: various media that can be program code stored such as USB flash disk, portable hard drive, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), magnetic disc or CDs.

The above; be only the specific embodiment of the present invention, but protection scope of the present invention is not limited to this, is anyly familiar with those skilled in the art in the technical scope that the present invention discloses; can expect easily changing or replacing, within all should being encompassed in protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion by the described protection range with claim.

Claims

1. a transmitter, is characterized in that, comprising: peak-to-average force ratio suppresses CFR module, main power amplifier branch road, auxiliary power amplifier branch road He He road module, described main power amplifier branch road comprises the first digital to analog converter DAC and the first power amplifier PA, described auxiliary power amplifier branch road comprises the 2nd DAC and the 2nd PA; Wherein,

Described CFR module is used for receiving input signal, and described input signal is carried out to peak-to-average force ratio inhibition, to obtain main signal and to offset signal;

A described DAC is for described main signal is carried out to digital-to-analogue conversion process, and a described PA processes for the described main signal after digital-to-analogue conversion is processed is carried out to power amplification;

Described the 2nd DAC is used for the described signal that offsets to carry out digital-to-analogue conversion process, and described the 2nd PA for offseting signal execution power amplification processing described in after digital-to-analogue conversion is processed;

Described close road module for the described main signal to after power amplification is processed and after power amplification is processed described in offset signal and carry out and close road and process to obtain output signal.

2. transmitter according to claim 1, is characterized in that, described auxiliary power amplifier branch road also comprises pulse stretcher and pulse shortener; Wherein, described pulse stretcher for offseting signal execution pulse stretching processing described in before power amplification is processed, described pulse shortener for described close road module to the described main signal after power amplification is processed and after power amplification is processed described in offset signal and carry out and close before road processes to obtain described output signal, to offseting signal described in after power amplification is processed, carry out process of pulse-compression.

3. transmitter according to claim 1 and 2, is characterized in that, described transmitter also comprises digital pre-distortion DPD module; Wherein, described DPD module for the described main signal to before digital-to-analogue conversion is processed and/or before digital-to-analogue conversion is processed described in offset signal combine digital pre-distortion.

4. transmitter according to claim 3, is characterized in that, described transmitter also comprises feedback branch; Wherein,

Described feedback branch is for feeding back to described DPD module by feedback signal, described feedback signal be by the described main signal after power amplification is processed, after power amplification processing described in offset at least one in signal and described output signal;

Described DPD module specifically for: according to described feedback signal, obtain the channel characteristic of branch road corresponding to described feedback signal, and according to described channel characteristic combine digital pre-distortion.

5. transmitter according to claim 4, is characterized in that, described feedback branch is a public feedback branch, and described feedback branch comprises three elections switch; Wherein, described three elections switch is controlled described main power amplifier branch road, auxiliary power amplifier branch road He He road module is connected with described DPD module, with control described main signal after power amplification is processed, after power amplification processing described in offset signal and described output signal to the feedback of described DPD module.

6. according to the transmitter described in any one in claim 3 to 5, it is characterized in that, described transmitter also comprises an ADC, error power amplifier branch road, and described error power amplifier branch road comprises the 3rd DAC and the 3rd PA, and described main power amplifier branch road also comprises the first combiner unit; Wherein,

A described ADC is for carrying out analog-to-digital conversion process to the described main signal after power amplification is processed;

Described DPD module specifically for: the inversion signal of the described main signal after a described ADC processes is carried out to addition process with the described main signal of processing without described main power amplifier branch road and obtains error signal, and described error signal is sent to described error power amplifier branch road;

Described the 3rd DAC is used for: described error signal is carried out to digital-to-analogue conversion process, and described the 3rd PA processes for the described error signal after digital-to-analogue conversion is processed is carried out to power amplification;

Described the first combiner unit is used for: the described main signal of processing through power amplification and processing without a described ADC and the described error signal after power amplification is processed are closed to road and process and obtain the described main signal through power amplification processing and Error processing;

Described close road module specifically for: to the described main signal through power amplification processing and Error processing and through power amplification, process described in offset signal and carry out and close road and process to obtain output signal.

7. according to the transmitter described in any one in claim 3 to 6, it is characterized in that, a described DAC comprises the first sub-DAC and the second sub-DAC, and a PA comprises the first sub-PA and the second sub-PA, and described main power amplifier branch road also comprises the second combiner unit; Wherein,

Described DPD module specifically for: by described main signal, obtain the first component signal and second component signal;

Described the first sub-DAC processes for described the first component signal being carried out to digital-to-analogue conversion described the first component signal obtaining through power amplification processing, and described the first sub-PA is for carrying out power amplification processing to described the first component signal of processing through power amplification;

Described the second sub-DAC processes for described second component signal being carried out to digital-to-analogue conversion the described second component signal obtaining through power amplification processing, and described the second sub-PA is for carrying out power amplification processing to the described second component signal of processing through power amplification;

Described the second combiner unit is processed and is obtained the described main signal processed through power amplification for described the first component signal of processing through power amplification and the described second component signal processed through power amplification being closed to road.

8. a transmitter, is characterized in that, comprising: digital pre-distortion DPD module, the first digital to analog converter DAC, the first power amplifier PA, the first analog to digital converter ADC, the 2nd DAC, the 2nd PA and close road module; Wherein,

Described DPD module is used for receiving input signal;

A described DAC is for described input signal is carried out to digital-to-analogue conversion process, and a described PA is for the described input signal execution power amplification after digital-to-analogue conversion is processed is processed, to obtain the described input signal after power amplification is processed;

A described ADC is for carrying out analog-to-digital conversion process to described described input signal after power amplification is processed, described DPD module is also for carrying out addition process to obtain error signal by the inversion signal of the described input signal after analog-to-digital conversion process and the described input signal of processing without a described DAC, described the 2nd DAC is for carrying out digital-to-analogue conversion process to described error signal, and described the 2nd PA is for carrying out power amplification processing to the described error signal after digital-to-analogue conversion is processed, to obtain the described error signal after power amplification is processed;

The described road module of closing is closed road and is processed to obtain output signal for the described described input signal of processing and processing without a described ADC through power amplification and described described error signal after power amplification is processed are carried out.

9. transmitter according to claim 8, is characterized in that, described transmitter also comprises feedback branch; Wherein,

Described feedback branch is used for: feedback signal is fed back to DPD module, and described feedback signal comprises described described input signal after power amplification is processed, described described error signal after power amplification is processed and at least one of described output signal;

Described DPD module specifically for: according to described feedback signal to described input signal combine digital pre-distortion.

10. transmitter according to claim 9, is characterized in that, described feedback branch is a public feedback branch, and described feedback branch comprises three elections switch; Wherein, described three elections switch is for controlling described described input signal after power amplification is processed, described described error signal after power amplification is processed and described output signal to the feedback of described DPD module.

11. 1 kinds of methods for signal transmitting, is characterized in that, comprising:

Receive input signal, described input signal is carried out to peak-to-average force ratio inhibition, to obtain main signal and to offset signal;

Described main signal is carried out to digital-to-analogue conversion process, and the described main signal after digital-to-analogue conversion is processed is carried out to power amplification and process;

The described signal that offsets is carried out to digital-to-analogue conversion process, and offset signal execution power amplification processing described in after digital-to-analogue conversion is processed;

To the described main signal after power amplification is processed and after power amplification is processed described in offset signal and carry out and close road and process to obtain output signal.

12. methods according to claim 11, is characterized in that, described method also comprises:

Described in before power amplification is processed, offset signal execution pulse stretching processing;

The described main signal to after power amplification is processed and after power amplification is processed described in offset signal and carry out and close before road processes to obtain described output signal, to offseting signal described in after power amplification is processed, carry out process of pulse-compression.

13. according to the method described in claim 11 or 12, it is characterized in that, described method also comprises:

To the described main signal before digital-to-analogue conversion is processed and/or before digital-to-analogue conversion is processed described in offset signal combine digital pre-distortion.

14. methods according to claim 13, is characterized in that, described method also comprises:

Obtain feedback signal, described feedback signal be by the described main signal after power amplification is processed, after power amplification is processed described in offset at least one in signal and described output signal;

Wherein said to the described main signal before digital-to-analogue conversion is processed and/or before digital-to-analogue conversion is processed described in offset signal combine digital pre-distortion, comprising:

According to described feedback signal, obtain the channel characteristic of branch road corresponding to described feedback signal, and according to described channel characteristic combine digital pre-distortion.

15. according to the method described in claim 13 or 14, it is characterized in that,

Described method also comprises: the described main signal after power amplification is processed is carried out to analog-to-digital conversion process;

Wherein said to the described main signal before digital-to-analogue conversion is processed and/or before digital-to-analogue conversion is processed described in offset signal combine digital pre-distortion, comprising: the inversion signal of the described main signal after described analog-to-digital conversion process is carried out to addition process with the described main signal of processing without digital-to-analogue conversion and obtain error signal;

Described method also comprises: described error signal is carried out to digital-to-analogue conversion process, and the described error signal after digital-to-analogue conversion is processed is carried out to power amplification and process, to processing through power amplification and closing road without the described main signal of analog-to-digital conversion process and the described error signal after power amplification is processed and process and obtain the described main signal through power amplification processing and Error processing;

Wherein said to the described main signal after power amplification is processed and after power amplification is processed described in offset signal and carry out and close road and process to obtain output signal, comprising: to the described main signal through power amplification processing and Error processing and through power amplification, process described in offset signal and carry out and close road and process to obtain described output signal.

16. according to claim 13 to the method described in any one in 15, it is characterized in that, described to the described main signal before digital-to-analogue conversion is processed and/or before digital-to-analogue conversion is processed described in offset signal combine digital pre-distortion and comprise: by described main signal, obtain the first component signal and second component signal;

Wherein said to described main signal execution digital-to-analogue conversion process, and the described main signal after digital-to-analogue conversion is processed is carried out to power amplification and process, comprise: described the first component signal is carried out to digital-to-analogue conversion and process described the first component signal obtaining through power amplification processing, and described the first component signal of processing through power amplification is carried out to power amplification processing; Described second component signal is carried out to digital-to-analogue conversion and process the described second component signal obtaining through power amplification processing, and the described second component signal of processing through power amplification is carried out to power amplification processing; To process to obtain described the first component signal and close road through the described second component signal that power amplification is processed and process and obtain the described main signal processed through power amplification through power amplification.

17. 1 kinds of methods for signal transmitting, is characterized in that, described method comprises:

Receive input signal;

Described input signal is carried out to digital-to-analogue conversion process, and the described input signal after digital-to-analogue conversion is processed is carried out to power amplification and process, to obtain the described input signal after power amplification is processed;

Described described input signal after power amplification is processed is carried out to analog-to-digital conversion process, the inversion signal of the described input signal after analog-to-digital conversion process and the described input signal of processing without digital-to-analogue conversion are carried out to addition process to obtain error signal, described error signal is carried out to digital-to-analogue conversion process, and the described error signal after digital-to-analogue conversion is processed is carried out to power amplification and process, to obtain the described error signal of processing through power amplification;

To described, through power amplification, process and carry out and close road and process to obtain output signal without the described input signal of analog-to-digital conversion process and described described error signal after power amplification is processed.

18. methods according to claim 17, is characterized in that, described method also comprises:

Obtain feedback signal, described feedback signal comprises described described input signal after power amplification is processed, described described error signal after power amplification is processed and at least one of described output signal;

According to described feedback signal, to described input signal combine digital pre-distortion.