CN107735954B - Communication transmitters and method - Google Patents
Communication transmitters and method Download PDFInfo
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- CN107735954B CN107735954B CN201580080631.1A CN201580080631A CN107735954B CN 107735954 B CN107735954 B CN 107735954B CN 201580080631 A CN201580080631 A CN 201580080631A CN 107735954 B CN107735954 B CN 107735954B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- 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
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- H04B1/0475—Circuits with means for limiting noise, interference or distortion
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Abstract
The present invention relates to a kind of for sending the communication transmitters (100) of the signal of communication including multiple frequency channels, and the multiple frequency channels include being located at frequency fRF1Neighbouring first frequency channel and it is located at frequency fRF2Neighbouring second frequency channel, and limit with spectral bandwidth Δ f and be located at frequency fRFThe shared spectral range of neighbouring concern.The communication transmitters (100) include: the first modulator (103a), are configured as based on the first local frequency fLO1The first baseband frequency channel is modulated, to obtain the first modulated signal for including the first frequency channel；Second modulator (103b) is configured as based on the second local frequency fLO2The second baseband frequency channel is modulated, to obtain the second modulated signal for including the second frequency channel；First combiner (105) is configured as first modulated signal being added with second modulated signal to obtain the modulated signal of combination；And frequency mixer (107), it is configured as the modulated signal of the combination and there is mixing frequencies fcPeriod mixed frequency signal mixing, to generate the signal of communication, wherein the signal of communication include the modulated signal of the combination through frequency reducing conversion the first frequency channel and the combination modulated signal the second frequency channel through up-conversion.The superior repellence for being particularly advantageous in that its LO traction and crosstalk for the performance for weakening parallel processing transmitter in the prior art of the invention.
Description
Technical field
The present invention relates to a kind of communication transmitters and methods.Particularly, it includes multiple that the present invention relates to one kind for sending
The communication transmitters and method of the signal of communication of frequency channels.
Background technique
Carrier wave (i.e. frequency channels) polymerization (carrier aggregation, CA) in wireless communication is increasingly becoming increase
Bandwidth and data rate and the pass for most preferably using available general fragmented spectrum in wireless communication (for example, LTE, Wi-Fi)
Key method.For the discontinuous CA (non-contiguous CA, NC CA) as a kind of useful CA scheme, NC is needed support
The transmitter of CA transmission.In this case, it is often necessary to the following challenge of reply: wider total processing bandwidth of the carrier wave of polymerization
(bandwidth, BW) may span across entire frequency band, and have interference signal between desired carrier wave；Using high-order QAM LTE and
Data rate and error vector module (error vector module, EVM) demand of 802.11ac has been urgent, and
And CA influences the demand also by increase to higher EVM performance；And it should be with each point to the EVM demand for the transceiver for supporting CA
Loading gage wave has optimum performance and interferes with each other the minimum target of deterioration.
Known some transmitter technologies for supporting NC CA transmission, for example, processing cover all carrier waves entire frequency band span,
The parallel processing of carrier wave and the double-iteration method (double complexprocessing) of carrier wave.However, it is all these
The transmitter technologies known have the shortcomings that, for example, local oscillator (local oscillator, LO) traction in parallel processing and/
Or LO coupling, and wideband adjustable IF filtering and relatively very high image rejection ratio are needed in double-iteration method
(image rejection ratios), these prevent transmitter technologies to be widely accepted for suitable for discontinuous CA.
Therefore, it is necessary to a kind of improved communication transmitters and method, it is particularly suitable for discontinuous CA, but is not drawn by LO
Adverse effect improved communication transmitters and method.
Summary of the invention
The object of the present invention is to provide a kind of improved communication transmitters and methods, especially a kind of to be suitable for discontinuous CA
Improved communication transmitters and method, not by LO draw and couple or to the very wide frequency band with many limitations
Inhibit the adverse effect of the needs of processing circuit with high mirror image.
This target is realized by the content of independent claims.In dependent claims, the description and the appended drawings
Provide further embodiment.
According in a first aspect, the communication hair that the present invention relates to a kind of for sending the signal of communication including multiple frequency channels
Device is sent, the multiple frequency channels include being located at frequency fRF1Neighbouring first frequency channel and it is located at frequency fRF2Neighbouring second
Frequency channels, and limit with spectral bandwidth Δ f and be located at frequency fRFShared (mutual) frequency spectrum model of neighbouring concern
It encloses.The communication transmitters include: the first modulator, are configured as based on the first local frequency fLO1To modulate the first baseband frequency
Channel includes being located at frequency f to obtainRF1First modulated signal of neighbouring first frequency channel；Second modulator, is configured
For based on the second local frequency fLO2It modulates the second baseband frequency channel, includes being located at frequency f to obtainRF2The second neighbouring frequency
Second modulated signal of rate channel；First combiner is configured as the first modulated signal being added with the second modulated signal to obtain
The modulated signal that must be combined；And frequency mixer, it is configured as the modulated signal that will be combined and there is mixing frequencies fcPeriod it is mixed
The mixing of frequency signal, to generate signal of communication, wherein signal of communication includes the first frequency through frequency reducing conversion of combined modulated signal
The second frequency channel through up-conversion of rate channel and combined modulated signal.
It thus provides a kind of communication transmitters, which polymerize particularly suitable for carrier wave, has and is being far apart
Carrier frequency fLO1And fLO2Neighbouring first frequency channel and second frequency channel, so that corresponding RF frequency is not drawn mutually.
In the first possible embodiment of the first aspect of the present invention, the frequency f of first frequency channelRF1, first
Local frequency fLO1Pass through f with mixing frequenciesLO1=fRF1+fcIt is associated, and the frequency f of second frequency channelRF2, the second local oscillator
Frequency fLO2Pass through f with mixing frequenciesLO2=fRF2-fcIt is associated.
In second of possible embodiment of the first aspect of the present invention, communication transmitters further include third modulation
Device, the third modulator are configured as based on third local frequency fLO3It modulates third baseband frequency channel, includes position to obtain
In frequency fRF3The third modulated signal of neighbouring third frequency channels, wherein third local frequency is by fLO3=fRF3It provides, wherein
Communication transmitters include the second combiner, which is configured as being added to third modulated signal by frequency mixer generation
On signal of communication.
In the third possible embodiment of second of embodiment of the first aspect of the present invention, communication transmitters
It further include being configured to supply with the first local frequency fLO1The first local oscillation signal the first local oscillator, be configured as
There is provided has the second local frequency fLO2The second local oscillation signal the second local oscillator and be configured to supply with third
Local frequency fLO3Third local oscillation signal third local oscillator.
This embodiment offers a kind of effective communication transmitters, and wherein LO signal is provided by local oscillator, described
Local oscillator is operated in the case where being spaced apart quite remote frequency, from the risk that LO traction may be not present.
The second of the first aspect of the present invention or the third embodiment the 4th kind of possible embodiment in,
One, second or third modulator include modulator frequency mixer, wherein the modulator frequency mixer of the first modulator is configured as
One baseband frequency channel with have the first local frequency fLO1Mixed frequency signal mixing, wherein the modulator of the second modulator is mixed
Device is configured as the second baseband frequency channel and has the second local frequency fLO2Mixed frequency signal mixing, and wherein third
The modulator frequency mixer of modulator is configured as third baseband frequency channel and has third local frequency fLO3Mixed frequency signal
Mixing.
In the 5th kind of possible embodiment of the 4th kind of embodiment of the first aspect of the present invention, first, second
Or third modulator further includes the low-pass filter for being configured as being filtered respective baseband frequency channel.
The low-pass filter swum on the modulator removes unwanted frequency component from signal of communication.
In the first of the first aspect of the present invention itself or the first aspect of the present invention into the 5th kind of embodiment
Any embodiment the 6th kind of possible embodiment in, communication transmitters further include be configured as amplification by being mixed
The power amplifier for the signal of communication that device generates.
In the first of the first aspect of the present invention itself or the first aspect of the present invention into the 6th kind of embodiment
Any embodiment the 7th kind of possible embodiment in, the frequency f of mixed frequency signalcHigher than the concern of signal of communication
Shared spectral range spectral bandwidth Δ fBPF。
In the first of the first aspect of the present invention itself or the first aspect of the present invention into the 7th kind of embodiment
Any embodiment in the 8th kind of possible embodiment in, communication transmitters further include detection and calibration unit with
And digital signal processor, the detection and calibration unit are configured as measuring at first frequency channel or second frequency channel
Leakage signal, the digital signal processor are configured as carrying out the first baseband frequency channel and/or the second baseband frequency channel
Predistortion, to inhibit to be drawn by the crosstalk between the LO1 and LO2 that are likely to be present between first frequency channel and second frequency channel
Any shared leakage duplicate (replica) signal risen.Alternatively, it can be filtered out at each channel such potential multiple
This.
In the first of the first aspect of the present invention itself or the first aspect of the present invention into the 8th kind of embodiment
Any embodiment the 9th kind of possible embodiment in, communication transmitters further include being configured as to by frequency mixer
The bandpass filter that the signal of communication of generation is filtered, wherein bandpass filter Δ fBPFBandwidth be located at frequency fRFNear.
This communication transmitters allow to inhibit the unwanted mirror image of the frequency channels in the spectral range of concern.
In the first of the first aspect of the present invention itself or the first aspect of the present invention into the 9th kind of embodiment
Any embodiment the tenth kind of possible embodiment in, period mixed frequency signal is sinusoidal mixed frequency signal.
This communication transmitters allow easily to provide period mixed frequency signal.It can choose the frequency f of mixed frequency signalc, from
And fcAnd its spectral range of the harmonic wave not with the recentering of the concern of signal of communication interferes.
In the first of the first aspect of the present invention itself or the first aspect of the present invention to the tenth kind of embodiment kind
Any embodiment a kind of the tenth possible embodiment in, communication transmitters further include: the 4th modulator, this
Four modulators are configured as based on the 4th local frequency fLO4It modulates the 4th baseband frequency channel, includes being located at frequency to obtain
fRF44th modulated signal of the 4th neighbouring frequency channels；And the 5th modulator, the 5th modulator are configured as based on the
Five local frequency fLO5The 5th baseband frequency channel is modulated, includes being located at frequency f to obtainRF5The 5th neighbouring frequency channels
5th modulated signal；Wherein first combiner is configured as the first modulated signal, the second modulated signal, the 4th modulated signal
It is added with the 5th modulated signal, to obtain combined modulated signal；And wherein frequency mixer is configured as the modulation of the combination
Signal with have mixing frequencies fcSquare-wave signal mixing, to generate signal of communication, wherein the signal of communication includes combined tune
The first frequency channel through frequency reducing conversion of signal processed, the second frequency channel through up-conversion of the modulated signal of combination, group
The 4th frequency channels through frequency reducing conversion of the modulated signal of conjunction and the 5th frequency through up-conversion of combined modulated signal
Channel.
In a kind of the tenth 12nd kind of possible embodiment of embodiment of the first aspect of the present invention, the 4th frequency
The frequency f of rate channelRF4, the 4th local frequency fLO4Pass through f with mixing frequenciesLO4=fRF4+3fcIt is associated, and the 5th frequency
The frequency f of channelRF5, the 5th local frequency fLO5Pass through f with mixing frequenciesLO5=fRF5-3fcIt is associated.
It is described the present invention relates to a kind of method for sending the signal of communication including multiple frequency channels according to second aspect
Multiple frequency channels include being located at frequency fRF1Neighbouring first frequency channel and it is located at frequency fRF2Neighbouring second frequency channel,
And limiting has shared spectral bandwidth Δ f and is located at frequency fRFThe spectral range of neighbouring concern.This method include with
Lower step: it is based on the first local frequency fLO1It modulates the first baseband frequency channel, includes being located at frequency f to obtainRF1Neighbouring
First modulated signal of first frequency channel；Based on the second local frequency fLO2The second baseband frequency channel is modulated, to be wrapped
It includes and is located at frequency fRF2Second modulated signal of neighbouring second frequency channel；By the first modulated signal and the second modulated signal phase
Obtained the modulated signal of combination；And by combined modulated signal and there is mixing frequencies fcPeriod mixed frequency signal mixing
To generate signal of communication, wherein signal of communication includes the first frequency channel converted through frequency reducing and the combination of combined modulated signal
Modulated signal the second frequency channel through up-conversion.
Method according to the second aspect of the invention can be held by communication transmitters according to the first aspect of the invention
Row.Other features of method according to a second aspect of the present invention are directed to according to the first aspect of the invention and according to this hair
The communication function of the above-mentioned different embodiment of bright first aspect.
According to the third aspect, the present invention relates to a kind of computer program, which includes ought be real on computers
For executing the program code of method according to the second aspect of the invention when applying.
The present invention can be implemented in hardware and/or software.
Detailed description of the invention
Further embodiment of the present invention is described below with reference to accompanying drawings, in which:
Fig. 1 shows the schematic diagram of the communication transmitters according to one embodiment；
Fig. 2 shows the schematic diagrames in terms of the frequency planning illustrated according to the communication transmitters of one embodiment；
Fig. 3 shows the schematic diagram in terms of illustrating the mirror image duplicate according to the communication transmitters of one embodiment；
Fig. 4 shows the schematic diagram of the communication transmitters with LO crosstalk alignment loop according to one embodiment；
Fig. 5 shows the schematic diagram of the communication transmitters for polymerizeing up to 5 communication carriers according to one embodiment；
Fig. 6 shows explanation according to the frequency of the communication transmitters for polymerizeing up to 5 communication carriers of one embodiment
The schematic diagram of rate planning aspect；And
Fig. 7 shows the schematic diagram of the communication means according to one embodiment.
Specific embodiment
In the following detailed description, with reference to attached drawing, which constitutes a part of this disclosure, and passes through the side of explanation
Formula shows the specific aspect that the disclosure can be implemented.It should be appreciated that without departing from the scope of the disclosure, Ke Yili
With other aspects and carry out structure or change in logic.Therefore, detailed description below is not to be considered as limiting, and
The scope of the present disclosure is defined by the following claims.
It should be appreciated that disclosure relevant to described method for be configured to execute this method relevant device or
System is also possible to applicable, and vice versa.For example, corresponding equipment can wrap if describing specific method and step
The unit for executing described method and step is included, even if not being expressly recited or showing such unit in figure.In addition, should
Understand, unless otherwise specified, the feature of various illustrative aspects as described herein can be combined with each other.
Fig. 1 shows the schematic diagram of the communication transmitters 100 according to one embodiment.Communication transmitters 100 are configured as
The signal of communication including multiple frequency channels is sent, plurality of frequency channels include being located at frequency fRF1Neighbouring first frequency
Channel and be located at frequency fRF2Neighbouring second frequency channel, and the multiple frequency channels are limited with shared spectral band
Wide Δ f and be located at frequency fRFThe spectral range of neighbouring concern.
In one embodiment, communication transmitters 100 include the antenna 117 for sending signal of communication.In the upper right of Fig. 1
Angle shows the exemplary frequency spectrum of the concern including three frequencies or communication channel that are identified as " ch1 ", " ch2 " and " ch3 "
Range.
Communication transmitters 100 include the first modulator 103a and the second modulator 103b, and the first modulator 103a is configured
For based on the first local frequency fLO1Modulate the first baseband frequency channel (such as first frequency channel shown in FIG. 1 " ch1 "),
It include being located at frequency f to obtainRF1First modulated signal of neighbouring first frequency channel, the second modulator 103b are configured as
Based on the second local frequency fLO2Modulate the second baseband frequency channel (such as second frequency channel shown in FIG. 1 " ch2 "), with
Obtain includes being located at frequency fRF2Second modulated signal of neighbouring second frequency channel.
Communication transmitters 100 further include the first combiner 105, and the first combiner 105 is configured as will be by the first modulator
The first modulated signal that 103a is provided is added with the second modulated signal provided by the second modulator 103b to obtain the tune of combination
Signal processed.In one embodiment, combiner 105 can be only that combination indicates the first modulated signal and the second modulated signal
The ball bearing made node of electric current.
Communication transmitters 100 further include frequency mixer 107, and frequency mixer 107 is configured as to be provided by the first combiner 105
Combined modulated signal with there is mixing frequencies fcPeriod mixed frequency signal mixing, to generate signal of communication, thus signal of communication
The through up-conversion of the first frequency channel through frequency reducing conversion including combined modulated signal and combined modulated signal
Two frequency channels.
In one embodiment, communication transmitters 100 further include third modulator 103c, and third modulator 103c is configured
For based on third local frequency fLO3Modulate third baseband frequency channel (such as third frequency channels shown in FIG. 1 " ch3 "),
It include being located at frequency f to obtainRF3The third modulated signal of neighbouring third frequency channels.In one embodiment, communication is sent
Device 100 includes the second combiner 109, and the second combiner 109 is configured as third modulated signal being added to and be generated by frequency mixer 107
Signal of communication on.
It in one embodiment, is sinusoidal mixing letter by the period mixed frequency signal that frequency mixer 107 is used to generate signal of communication
Number.It can choose the frequency f of mixed frequency signalc, thus fcAnd its harmonic wave not with the frequency spectrum model of the recentering of the concern of signal of communication
It encloses and interferes, as will be discussed in more detail below.
In one embodiment, the frequency f of mixed frequency signalcHigher than the frequency spectrum of the shared spectral range of the concern of signal of communication
Bandwidth deltaf fBPF。
In one embodiment, the first, second, and third local frequency is respectively by fLO1=fRF1+fc、fLO2=fRF2-fcWith
fLO3=fRF3It provides.In alternative embodiments, the first, second, and third local frequency is respectively by fLO1=fRF1-fc、fLO2=fRF2
+fcAnd fLO3=fRF3It provides.In one embodiment, communication transmitters 100 further include being configured to supply with the first local oscillator
Frequency fLO1The first local oscillation signal the first local oscillator, be configured to supply with the second local frequency fLO2Second
Shake signal the second local oscillator and be configured to supply with third local frequency fLO3Third local oscillation signal third sheet
Ground oscillator.
In one embodiment, first, second and/or third modulator 103a-c may include respective modulator mixing
Device 111a-c.The modulator frequency mixer 111a of first modulator 103a is configured as base-band input signal and has the first local oscillator
Frequency fLO1Mixed frequency signal mixing.The modulator frequency mixer 111b of second modulator 103b is configured as base-band input signal
And have the second local frequency fLO2Mixed frequency signal mixing.The modulator frequency mixer 111c of third modulator 103c is configured as
By base-band input signal and there is third local frequency fLO3Mixed frequency signal mixing.As shown in Figure 1, modulator frequency mixer 111a-
C is configured to supply the frequency up-conversion of the first, second, and third baseband frequency channel.Modulator frequency mixer 111a-c can be with
It is realized in the form of compound output frequency mixer.As shown in Figure 1, the first, second, and third modulator 103a-c and modulator mixing
Device 111a-c can be configured as the same phase (in-phase, I) for handling signal of communication and orthogonal (quadrature, Q) component.
In one embodiment, first, second and/or third modulator 103a-c further includes being configured as from respective base
With low-pass filter (low-pass filter, the LPF) 113a-c for filtering out unwanted frequency component in input signal.One
In a embodiment, low-pass filter 113a-c may include automatic growth control (aotomatic gain control, AGC),
As shown in Figure 1.
In one embodiment, communication transmitters 100 further include in an analogue form to the first, second, and third modulation
Device 103a-c provides the first, second, and third digital analog converter (digital to analog of respective input signal
Converter, DAC) 119a-c.
As shown in Figure 1, in one embodiment, communication transmitters 100 include being configured in the upstream of the second combiner 109
For the power amplifier (power amplifier, PA) 115 for amplifying the signal of communication provided by the second combiner 109.
Fig. 2 shows the schematic diagrames in terms of the frequency planning of the communication transmitters 100 of explanatory diagram 1.
The offer of signal of communication is shown at the top of Fig. 2, which is limited by combiner 105 and frequency mixer 107
With positioned at frequency fRFThe shared spectral range of the concern of neighbouring spectral bandwidth, and including being located at frequency fRF1Neighbouring
One frequency channels (i.e. " ch1 ") and be located at frequency fRF2Neighbouring second frequency channel (i.e. " ch2 ").
The communication transmitters 100 that can be seen that Fig. 1 from the middle section of Fig. 2 are provided in local frequency fLO1、fLO2And fLO3
Between enough intervals so that signal of communication have example frequency or communication channel " ch1 ", " ch2 " and " ch3 ", thus
So that local frequency fLO1、fLO2And fLO3Between there is no or only very small LO traction generates.
In the bottom of Fig. 2, local frequency f is shownLO1、fLO2And fLO3With mixing frequencies fcAnd its between harmonic multiples
Exemplary relation.As the skilled person will appreciate, if mixing frequencies fcAnd its multiple is not and by modulator
The communication channel that 103a-c is provided is interfered, then superior function and the improved frequency rule of communication transmitters 100 may be implemented
Draw flexibility.
In one embodiment, communication transmitters 100 shown in FIG. 1 further include bandpass filter (band-pass
Filter, BPF) 116.In one embodiment, bandpass filter 116 is configured as to by frequency mixer 107 and the second combiner
109 signals of communication generated are filtered.In one embodiment, the bandwidth deltaf f of bandpass filter 116BPFIt is confirmed as specific
The most spread spectrum bandwidth that the communication technology is supported, wherein bandpass filter is located at frequency fRFNear.As shown schematically in figure 3, band
Bandpass filter 116 allows to inhibit the unwanted mirror image of the frequency channels except the shared spectral regions of concern.Bandpass filtering
Device (BPF) 116 is also prevented from the transmission of harmonic signal.
Fig. 4 shows the schematic diagram of the communication transmitters 400 according to one embodiment.Communication transmitters 400 shown in Fig. 4
The main distinction between communication transmitters 100 shown in FIG. 1 is that communication transmitters 400 further include detection and calibration unit
401.In the calibration mode of communication transmitters 400, communication transmitters 400 are configured as only sending the first of signal of communication every time
With one in second frequency channel, and detect and calibration unit 401 be configured as measuring letting out on another frequency channels
Leakage signal.In the sending mode of communication transmitters 400, detection and 401 allocating digital signal processor of calibration unit
(digital signal processor, DSP) 403 with predistortion first and/or second frequency channel, to inhibit any survey
The leakage signal of amount.
Fig. 5 shows the schematic diagram of the communication transmitters 500 according to one embodiment.Communication transmitters 500 shown in fig. 5
The main distinction between communication transmitters 100 shown in FIG. 1 be communication transmitters 500 further include the 4th modulator 103d and
5th modulator 103e, the 4th modulator 103d are configured as based on the 4th local frequency fLO4To modulate the 4th baseband frequency letter
Road includes being located at frequency f to obtainRF44th modulated signal of the 4th neighbouring frequency channels, the 5th modulator 103e are configured
For based on the 5th local frequency fLO5The 5th baseband frequency channel is modulated, is located at frequency f to obtainRF5The 5th neighbouring modulation letter
Number.In the embodiment shown in fig. 5, the first combiner 105 is configured as the first modulated signal, the second modulated signal, the 4th
Modulated signal is added with the 5th modulated signal, to obtain combined modulated signal.In the embodiment shown in fig. 5, frequency mixer 107
It is configured as the modulated signal that will be combined and there is mixing frequencies fcSquare-wave signal mixing, to generate signal of communication, in Fig. 5
It schematically shows, so that signal of communication includes the first frequency channel through frequency reducing conversion of combined modulated signal, combination
The second frequency channel through up-conversion of modulated signal, the modulated signal of combination the 4th frequency channels through frequency reducing conversion and
The 5th frequency channels through up-conversion of combined modulated signal.
In one embodiment, the frequency f of the 4th frequency channelsRF4, the 4th local frequency fLO4Pass through f with mixing frequenciesLO4
=fRF4+3fcIt is associated, and the frequency f of the 5th frequency channelsRF5, the 5th local frequency fLO5Pass through f with mixing frequenciesLO5=
fRF5-3fcIt is associated.
As the skilled person will appreciate, in the embodiment shown in fig. 5, user's wave mixing signal principle
On allow to handle even more than five frequencies or communication channel, as long as the modulator of respective numbers is available.Fig. 6 show explanation by
The communication transmitters 500 of Fig. 5 generate the schematic diagram of the process of the shared spectral range of the concern of signal of communication comprising 5 logical
Believe channel and each fcAnd harmonic wave.
Fig. 7 shows transmission the showing including the method 700 of the signal of communication of multiple frequency channels according to one embodiment
It is intended to.The multiple frequency channels include being located at frequency fRF1Neighbouring first frequency channel and it is located at frequency fRF2Neighbouring second
Frequency channels, and limit with spectral bandwidth Δ f and be located at frequency fRFThe shared spectral range of neighbouring concern.This method
700 the following steps are included: be based on the first local frequency fLO1It modulates 701 first baseband frequency channels, includes being located at frequency to obtain
Rate fRF1First modulated signal of neighbouring first frequency channel；Based on the second local frequency fLO2To modulate 703 second base band frequency
Rate channel includes being located at frequency f to obtainRF2Second modulated signal of neighbouring second frequency channel；By the first modulated signal and
Second modulated signal is added 705 to obtain combined modulated signal；And by combined modulated signal and there is mixing frequencies fc
Period mixed frequency signal mixing 707, to generate signal of communication, so that signal of communication includes combined modulated signal through frequency reducing turn
The second frequency channel through up-conversion of the first frequency channel and combined modulated signal that change.
It will be understood by those skilled in the art that at least some of above-mentioned steps can be sequentially performed, be performed in parallel,
Or it is executed in a manner of their combination.For example, step 701 and 703 can execute concurrently with each other and relative to step 705
It is sequentially performed with 707.
Device described herein may be embodied as optical circuit in chip or integrated circuit or specific integrated circuit
(application specific integrated circuit, ASIC).The present invention can be in number and/or simulation electronic
Implement in optical circuit.
Although the special characteristic or aspect of the disclosure may pass through the only one in several embodiments or embodiment
Disclose, but as it is may expect and for it is any given or it is specific be advantageously applied, these features or aspect
It other features or aspect can be combined with one or more of other embodiments or embodiment.In addition, being just described in detail
Or in claim using term " includes ", " having ", " having " or their other variants for, these terms are intended to similar
In term " includes " mode by comprising.In addition, term " example ", " such as " and " such as " only as an example, rather than
It is best or optimal.Term " coupling " and " connection " and derivative words may have been used.It should be appreciated that these terms can be with
It is used to indicate that two element coordination with one another or interaction, is directly physically or electrically contacted regardless of whether they are in, or
They are not in direct contact with one another.
Although specific aspect has been illustrated and described, those of ordinary skill in the art be will be understood that
Without departing from the scope of the disclosure, various substitutions and/or equivalent embodiment can replace shown and retouched
The particular aspects stated.This application is intended to cover any modifications or variation of the particular aspects being discussed herein.
Although the element in following following claims is listed with the particular order with corresponding label, unless right is wanted
Asking separately has the explanation implied for implementing the particular order of some or all of elements in these elements, these elements are not limited to
Implemented with the specific sequence.
In view of above-mentioned introduction, it is many substitution, modifications and variations it will be apparent to those skilled in the art that.When
So, those skilled in the art are it is readily appreciated that other than described herein, and there are many applications by the present invention.Although having joined
It examines one or more specific embodiments and describes the present invention, but those skilled in the art will appreciate, it is of the invention not departing from
In the case where range, many changes can be carried out to the present invention.It will thus be appreciated that in the following claims and their equivalents
In the range of, the present invention can be different from the mode specifically described herein and implement.
Claims (14)
1. a kind of for sending the communication transmitters (100 of the signal of communication including multiple frequency channels；400；500), described more
A frequency channels include being located at frequency fRF1Neighbouring first frequency channel and it is located at frequency fRF2Neighbouring second frequency channel, and
And the multiple frequency channels limit with spectral bandwidth Δ f and are located at frequency fRFThe shared spectral range of neighbouring concern,
The communication transmitters (100；400；500) include:
First modulator (103a) is configured as based on the first local frequency fLO1The first baseband frequency channel is modulated, to obtain
The first modulated signal including the first frequency channel；
Second modulator (103b) is configured as based on the second local frequency fLO2The second baseband frequency channel is modulated, to obtain
The second modulated signal including the second frequency channel；
First combiner (105) is configured as first modulated signal being added with second modulated signal, to obtain group
The modulated signal of conjunction；And
Frequency mixer (107) is configured as the combined modulated signal and has mixing frequencies fcPeriod mixed frequency signal it is mixed
Frequently, to generate the signal of communication, wherein the signal of communication includes the institute of the combined modulated signal converted through frequency reducing
State the second frequency channel through up-conversion of first frequency channel and the combined modulated signal.
2. communication transmitters (100 according to claim 1；400；500), wherein the frequency of the first frequency channel
Rate fRF1, the first local frequency fLO1Pass through f with the mixing frequenciesLO1=fRF1+fcIt is associated, and wherein described second
The frequency f of frequency channelsRF2, the second local frequency fLO2Pass through f with the mixing frequenciesLO2=fRF2-fcIt is associated.
3. communication transmitters (100 according to claim 1；400；500), wherein the communication transmitters (100；400；
It 500) further include third modulator (103c), the third modulator (103c) is configured as based on third local frequency fLO3Come
Third baseband frequency channel is modulated, to obtain the third modulated signal for including third frequency channels, wherein the third frequency is believed
Road is located at frequency fRF3Near, wherein the third local frequency is by fLO3=fRF3It provides, wherein the communication transmitters (100；
400；It 500) include the second combiner (109) that second combiner (109) is configured as the third modulated signal being added to
On the signal of communication generated by the frequency mixer (107).
4. communication transmitters (100 according to claim 3；400；500), wherein the communication transmitters (100；400；
It 500) further include being configured to supply with the first local frequency fLO1The first local oscillation signal the first local oscillator,
It is configured to supply with the second local frequency fLO2The second local oscillation signal the second local oscillator and be configured as
There is provided has the third local frequency fLO3Third local oscillation signal third local oscillator.
5. communication transmitters (100 according to claim 3；400；500), wherein first, second or third modulation
Device (103a-c) includes modulator frequency mixer (111a-c), wherein the modulator frequency mixer of first modulator (103a)
(111a) is configured as the first baseband frequency channel and has the first local frequency fLO1Mixed frequency signal mixing,
Wherein the modulator frequency mixer (111b) of second modulator (103b) is configured as believing second baseband frequency
Road with have the second local frequency fLO2Mixed frequency signal mixing, and the wherein third modulator (103c) is described
Modulator frequency mixer (111c) is configured as the third baseband frequency channel and has the third local frequency fLO3It is mixed
The mixing of frequency signal.
6. communication transmitters (100 according to claim 5；400；500), wherein first, second or third modulation
Device (103a-c) further includes the low-pass filter (113a-c) for being configured as being filtered the respective baseband frequency channel.
7. communication transmitters (100 according to claim 1；400；500), wherein the communication transmitters (100；400；
It 500) further include the power amplifier (115) for being configured as the signal of communication that amplification is generated by the frequency mixer (107).
8. communication transmitters (100 according to claim 7；400；500), wherein the frequency f of the mixed frequency signalcIt is higher than
The spectral bandwidth Δ f of the shared spectral range of the concern of the signal of communicationBPF。
9. communication transmitters (400) according to claim 8, wherein the communication transmitters (400) further include detection and
Calibration unit (401) and digital signal processor (403), the detection and calibration unit (401) are configured as measurement in institute
The leakage signal at first frequency channel or the second frequency channel is stated, the digital signal processor (403) is configured as
Based on the detection and the measurement of calibration unit (401) to the first baseband frequency channel and/or second baseband frequency
Channel carries out predistortion, to inhibit any leakage signal.
10. communication transmitters (100 according to any one of claim 1 to 9；400；500), wherein the communication is sent
Device (100；400；It 500) further include being configured as being filtered the signal of communication generated by the frequency mixer (107)
Bandpass filter (116), wherein the bandwidth deltaf f of the bandpass filter (116)BPFPositioned at the frequency fRFNear.
11. communication transmitters (100 according to any one of claim 1 to 9；400；500), wherein the period is mixed
Signal is sinusoidal mixed frequency signal.
12. communication transmitters (500) according to any one of claim 1 to 9, wherein the communication transmitters (500)
Further include:
4th modulator (103d) is configured as based on the 4th local frequency fLO4To modulate positioned at frequency fRF4The 4th neighbouring base
Band frequency channels, to obtain the 4th modulated signal for including the 4th frequency channels；And
5th modulator (103e) is configured as based on the 5th local frequency fLO5To modulate positioned at frequency fRF5The 5th neighbouring base
Band frequency channels, to obtain the 5th modulated signal for including the 5th frequency channels；
Wherein first combiner (105) is configured as first modulated signal, second modulated signal, described
Four modulated signals are added with the 5th modulated signal, to obtain combined modulated signal；And
Wherein the frequency mixer (107) is configured as the combined modulated signal and has mixing frequencies fcSquare-wave signal
Mixing, to generate the signal of communication, wherein the signal of communication includes converting through frequency reducing for the combined modulated signal
The first frequency channel, the second frequency channel through up-conversion of the combined modulated signal, the combination
Modulated signal through frequency reducing conversion the 4th frequency channels and the combined modulated signal through described in up-conversion
5th frequency channels.
13. communication transmitters (500) according to claim 12, wherein the frequency f of the 4th frequency channelsRF4、
The 4th local frequency fLO4Pass through f with the mixing frequenciesLO4=fRF4+3fcIt is associated, and wherein the 5th frequency
The frequency f of channelRF5, the 5th local frequency fLO5Pass through f with the mixing frequenciesLO5=fRF5-3fcIt is associated.
14. a kind of method (700) for sending the signal of communication including multiple frequency channels, the multiple frequency channels include being located at
Frequency fRF1Neighbouring first frequency channel and it is located at frequency fRF2Neighbouring second frequency channel, and the multiple frequency channels
Limiting has spectral bandwidth Δ f and is located at frequency fRFThe shared spectral range of neighbouring concern, the method includes following steps
It is rapid:
Based on the first local frequency fLO1(701) first baseband frequency channels are modulated, include the first frequency channel to obtain
The first modulated signal；
Based on the second local frequency fLO2(703) second baseband frequency channels are modulated, include the second frequency channel to obtain
The second modulated signal；
First modulated signal is added (705) with second modulated signal to obtain combined modulated signal；And
By the combined modulated signal and there is mixing frequencies fcPeriod mixed frequency signal be mixed (707), to generate the communication
Signal, wherein the signal of communication includes the first frequency channel converted through frequency reducing and the institute of the combined modulated signal
State the second frequency channel through up-conversion of the modulated signal of combination.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/EP2015/063511 WO2016202371A1 (en) | 2015-06-17 | 2015-06-17 | A communication transmitter and method |
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| WO (1) | WO2016202371A1 (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1529522A (en) * | 2003-09-28 | 2004-09-15 | 中兴通讯股份有限公司 | Multi-carrier transmssion digital merging device |
| CN102113223A (en) * | 2008-08-01 | 2011-06-29 | 高通股份有限公司 | Method and apparatus for mitigating VCO pulling |
| CN103595684A (en) * | 2013-11-26 | 2014-02-19 | 中国电子科技集团公司第四十一研究所 | Discontinuous carrier aggregation LTE-advanced signal analysis method and device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7529322B2 (en) * | 2005-08-26 | 2009-05-05 | University Of Macau | Two-step channel selection for wireless receiver front-ends |
| EP2579487B1 (en) * | 2011-10-03 | 2014-05-21 | ST-Ericsson SA | Non-contiguous carrier aggregation |
| GB2500231B (en) * | 2012-03-14 | 2014-04-30 | Broadcom Corp | Transmitter |
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2015
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1529522A (en) * | 2003-09-28 | 2004-09-15 | 中兴通讯股份有限公司 | Multi-carrier transmssion digital merging device |
| CN102113223A (en) * | 2008-08-01 | 2011-06-29 | 高通股份有限公司 | Method and apparatus for mitigating VCO pulling |
| CN103595684A (en) * | 2013-11-26 | 2014-02-19 | 中国电子科技集团公司第四十一研究所 | Discontinuous carrier aggregation LTE-advanced signal analysis method and device |
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| WO2016202371A1 (en) | 2016-12-22 |
| CN107735954A (en) | 2018-02-23 |
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