CN102763446B - Signal receiving and sending methods, transmitter, receiver, and system thereof - Google Patents
Signal receiving and sending methods, transmitter, receiver, and system thereof Download PDFInfo
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- CN102763446B CN102763446B CN201280000496.1A CN201280000496A CN102763446B CN 102763446 B CN102763446 B CN 102763446B CN 201280000496 A CN201280000496 A CN 201280000496A CN 102763446 B CN102763446 B CN 102763446B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
- H01Q3/26—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
- H04W16/24—Cell structures
- H04W16/28—Cell structures using beam steering
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Abstract
Embodiments of the present invention provide a signal receiving method, a signal sending method, a transmitter, a receiver, and a system thereof. The signal receiving method comprises: respectively performing analog beamforming (ABF) processing on M channels of signals received by a plurality of antenna elements, M being a natural number greater than or equal to 2; respectively performing digital beamforming (DBF) processing on N channels of the M-channel signals after the ABF processing, N being a natural number greater than or equal to 2; and performing decoding processing on the signals after the DBF processing. Therefore, desirable performance can be achieved, and meanwhile, the costs can be reduced, thereby improving the cost-effectiveness.
Description
Technical field
The embodiment of the present invention relates to the communications field, and more specifically, relates to a kind ofly receiving the method for signal, the method for transmitted signal, transmitter, receiver and system thereof.
Background technology
Active antenna system is a kind of significant base stations system, it can effectively reduce antenna and radio frequency (Radio Frequency, RF) loss between module, promote the radiation efficiency of radiofrequency signal, install simple, thereby and can change by numeric field covering and the capacity of the beam shape improvement system of antenna, thereby be more and more subject to operator and telecommunication apparatus supplier's attention.
Wave beam forming (Beamforming) is a kind of advanced person's multi-antenna technology, it forms aerial array by a plurality of bays (antenna element), between a plurality of bays by transmitting or the signal that receives are given the weight of certain feature and the signal in a plurality of array element are produced to wave beam forming, thereby make transmitting there is obvious directional characteristic or make to receive the signal with certain party tropism, can effectively strengthen useful signal and suppress disturbing, and then the Signal to Interference plus Noise Ratio (Signal-Interference-Noise Rate, SINR) of raising signal.
Current, conventionally adopt analog beam figuration (Analog Beamforming, ABF) or digital beam forming (Digital Beamforming, DBF) to adjust amplitude and/or the phase place that transmits or receive signal.But, although ABF cost is lower, can not obtain good performance, although and DBF can to obtain good performance cost higher.
Summary of the invention
The invention provides and a kind ofly receive the method for signal, the method for transmitted signal, transmitter, receiver and system thereof, make it possible to, when obtaining good performance, can also reduce costs, promote cost performance.
According to the embodiment of the present invention aspect, provide a kind of for receiving the method for signal, the method comprises: the signal receiving via a plurality of bays is carried out respectively to analog beam figuration (ABF) according to M road and process, wherein M is more than or equal to 2 natural number; To the M road signal after ABF processes, according to combine digital wave beam forming (DBF) processing respectively of N road, wherein N is more than or equal to 2 natural number; And the signal after DBF processes is carried out to decoding and process.
According to another aspect of the embodiment of the present invention, a kind of method for transmitting is provided, the method comprises: to the signal that will send, according to combine digital wave beam forming (DBF) processing respectively of N road, wherein N is more than or equal to 2 natural number; N road signal after DBF processes is carried out respectively to analog beam figuration (ABF) according to M road and process, wherein M is more than or equal to 2 natural number; And launch the signal after ABF processes via a plurality of bays.
Another aspect according to the embodiment of the present invention, provides a kind of receiver, and this receiver comprises: analog beam figuration (ABF) unit, and for the signal to via a plurality of antenna receptions, according to M road, carry out respectively ABF and process, wherein M is more than or equal to 2 natural number; Digital beam forming (DBF) unit, carries out respectively DBF for the M road signal to after ABF processes according to N road and processes, and wherein N is more than or equal to 2 natural number; And decoder, for the signal to after DBF processes, carry out decoding and process.
Another aspect according to the embodiment of the present invention, provides a kind of transmitter, and this transmitter comprises: digital beam forming (DBF) unit, and for being carried out respectively to DBF according to N road, processes the signal that will send, and wherein N is more than or equal to 2 natural number; Analog beam figuration (ABF) unit, carries out respectively ABF for the N road signal to after DBF processes according to M road and processes, and wherein M is more than or equal to 2 natural number; And transmitter unit, for the signal after ABF processes via a plurality of antenna transmissions.
Another aspect according to the embodiment of the present invention, provides a kind of antenna system, comprises described receiver and/or described transmitter.
Technical solution of the present invention, by the mode that adopts ABF and DBF to combine, makes it possible to, when obtaining good performance, can also reduce costs, and promotes cost performance.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme of the embodiment of the present invention, below the accompanying drawing of required use during embodiment is described is briefly described, 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.In the whole text, same or similar Reference numeral refers to same or similar element.
Fig. 1 be illustrate according to the embodiment of the present invention for receiving the exemplary flow chart of the method for signal.
Fig. 2 is the exemplary flow chart illustrating according to the method for transmitted signal of the embodiment of the present invention.
Fig. 3 illustrates according to the schematic diagram of the first specific implementation of the receiver of the embodiment of the present invention.
Fig. 4 illustrates according to the schematic diagram of the second specific implementation of the receiver of the embodiment of the present invention.
Fig. 5 illustrates according to the schematic diagram of the first specific implementation of the transmitter of the embodiment of the present invention.
Fig. 6 illustrates according to the schematic diagram of the second specific implementation of the transmitter of the embodiment of the present invention.
Fig. 7 illustrates the schematic diagram of carrying out linearizing another transmitter according to the employing APD of the embodiment of the present invention.
Fig. 8 illustrate according to the embodiment of the present invention, wherein based on each in a plurality of He Lu path, carry out linearizing schematic diagram.
Fig. 9 is the exemplary block diagram illustrating according to the structure of the receiver of the embodiment of the present invention.
Figure 10 is the exemplary block diagram illustrating according to the structure of the transmitter of the embodiment of the present invention.
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.
Technical scheme of the present invention, can be applied to various communication systems, for example: global system for mobile communications (Global System of Mobile communication, GSM), code division multiple access (CDMA, Code Division Multiple Access) system, Wideband Code Division Multiple Access (WCDMA) (WCDMA, Wideband Code Division Multiple Access Wireless), GPRS (GPRS, General Packet Radio Service), universal mobile telecommunications system (Universal Mobile Telecommunications System, UMTS), Long Term Evolution (LTE, Long Term Evolution) etc.
Mobile terminal (Mobile Terminal), also can be referred to as subscriber equipment (UE, User Equipment), mobile subscriber equipment etc., can be through wireless access network (for example, RAN, RadioAccess Network) communicate with one or more core net, mobile terminal can be mobile terminal, as mobile phone (or being called " honeycomb " phone) or there is the computer of mobile terminal, for example, can be portable, pocket, hand-hold type, mobile device built-in computer or vehicle-mounted, they and wireless access network exchange language and/or data.
Base station can be the base station (BTS, Base Transceiver Station) in GSM or CDMA, also can be the base station (NodeB) in WCDMA, can also be the evolved base station (eNB or e-NodeB, evolutional Node B) in LTE, the present invention limit.
After this, for convenience of description, will in the context at active antenna system (Active Antenna System, AAS), specifically describe the embodiment of the present invention, but the invention is not restricted to this, can also be applied to other antenna systems.
Fig. 1 be illustrate according to the embodiment of the present invention for receiving the exemplary flow chart of the method 10 of signal.Can in receiver, realize the method 10.
As shown in fig. 1, method 10 101 in, the signal receiving via a plurality of bays is carried out respectively to analog beam figuration (Analog Beamforming, ABF) according to M road and processes, wherein M is more than or equal to 2 natural number.
In 102, to the M road signal after ABF processes, according to combine digital wave beam forming (Digital Beamforming, the DBF) processing respectively of N road, wherein N is more than or equal to 2 natural number.DBF in all embodiment of the present invention processes and both can carry out at digital intermediate frequency, also can carry out in base band.For example, when DBF processes when digital intermediate frequency carries out, the signal after DBF processes carries out sending into Base Band Unit after multiplexing and carries out Base-Band Processing, and this Base-Band Processing comprises that demodulation code processes; When DBF processes when base band is carried out, after the M road signal after ABF processes downconverts to base band according to the demodulation of N road after, carry out respectively DBF and process, afterwards, to the processing of decoding of the signal after DBF processes.The DBF of take in all embodiment of the present invention processes and carries out describing as example at digital intermediate frequency, but is not limited to this, and DBF processes the scheme of carrying out in base band can adopt existing scheme, does not repeat them here.
In 103, to the processing of decoding of the signal after DBF processes.
According to the embodiment of the present invention, by the mode that adopts ABF and DBF to combine, make it possible to, when obtaining good performance, can also reduce costs, thereby promote cost performance.
Further, N<M in above embodiment.
Like this, by the number N of digital channel, be less than the number M of analog channel, thereby when can effectively reduce the channel resource consumption of digital intermediate frequency, promote the degree of freedom of the Inclination maneuver scope of antenna system.
Fig. 2 is the exemplary flow chart illustrating according to the method 20 for transmitted signal of the embodiment of the present invention.Can in transmitter, realize the method 20.
As shown in Figure 2, method 20 201 in, to the signal that will send according to N road respectively combine digital wave beam forming (DBF) process, wherein N is more than or equal to 2 natural number.
In 202, the N road signal after DBF processes is carried out respectively to analog beam figuration (ABF) according to M road and process, wherein M is more than or equal to 2 natural number.
In 203, the signal via a plurality of bay transmittings after ABF processes.
According to the embodiment of the present invention, by the mode that adopts ABF and DBF to combine, make it possible to, when obtaining good performance, can also reduce costs, thereby promote cost performance.
Further, N<M.
Like this, by the number N of digital channel, be less than the number M of analog channel, thereby when can effectively reduce the channel resource consumption of digital intermediate frequency, promote the degree of freedom of the Inclination maneuver scope of antenna system.
Below, explain in more detail with reference to the accompanying drawings the specific implementation according to the embodiment of the present invention.
Fig. 3 illustrates according to the schematic diagram of the first specific implementation 300 of the receiver of the embodiment of the present invention.
As shown in Figure 3, receiver 310 receives signal from a plurality of bays, and in this example, the number of bay is ten (#1 to #10), but the invention is not restricted to this, and the number of bay can be other any suitable numbers according to actual needs.Received signal in a plurality of RX path (being analog channel) by duplexer (DUP) carry out filtering, by low noise amplifier (Low Noise Amplifier, LNA) amplify, then through low-converter (local oscillation signal for " LO ") (in Fig. 3 (a)
shown in) carry out ABF processing after down-conversion.Wherein, in a plurality of RX path, one or more in included DUP, LNA, low-converter, ABF also can carry out multiplexing according to the actual conditions of application.In this example, the number of RX path is 10, and RX path and bay be one to one, and each RX path (analog channel) is also 10 corresponding to the number of 1 bay and bay.But, adopt each RX path wherein corresponding to the mode of 1 bay (, so-called one drives a framework) be a preferred implementation of the embodiment of the present invention, and the invention is not restricted to this, those skilled in the art can adopt other modes according to factors such as design requirement and applied environments, drive two frameworks, drive three frameworks etc. such as one.When each RX path is during corresponding to 1 bay, can retain and drive a framework at analog domain, thereby obtain the maximum degree of freedom of the Inclination maneuver scope of antenna system.
After this, the signal after ABF processes being carried out to DBF processes.Particularly, for example, can the signal after ABF processes be synthesized to a plurality of synthesis paths by synthesizer (as shown in " Σ " of the mid portion in Fig. 3), then in each of a plurality of synthesis paths (being digital channel), carry out subsequent process.Here, because the needs in follow-up DBF processing at least need 2 digital channels, therefore, the number of a plurality of synthesis paths is to be more than or equal to 2 natural number.In addition, synthesizer can represent it is the signal from a plurality of RX path to be carried out to vector add here.
In example illustrated in fig. 3, the number of synthesis path is 2, wherein bay #1 to #5 is synthesized corresponding (as shown in the first half in Fig. 3 with a digital channel, after this be called the first digital channel), and bay #6 to #10 is synthesized to corresponding with another digital channel (as shown in the latter half in Fig. 3, being after this called the second digital channel).But the embodiment of the present invention is not limited to this, the signal after synthetic can be multichannel more, for example, the signal after synthetic can for 3 tunnels, 4 tunnels, etc.
In addition, can depend on that reception (target) antenna pattern, the parameter based on each bay (such as main lobe size, secondary lobe big or small etc.) synthesize.Particularly, when synthetic, can will in several signals, make the signal (or signal of analog channel) of the best several bays of loss of signal minimum after synthetic and performance synthesize corresponding with a digital channel.For example, except the example shown in figure, can exist wherein the signal from odd number bay to be synthesized as being synthesized as the situation corresponding with another digital channel with a corresponding signal from even number bay of digital channel.In addition, the number of the corresponding a plurality of bays of each digital channel (or analog channel) can be different, for example, in some cases, the number of supposing bay is S, can be bay #1 to #J is synthesized corresponding with the first digital channel, bay #J+1 to #K is synthesized corresponding with the second digital channel, bay #L+1 to #P is synthesized corresponding with N-1 digital channel, and bay #P+1 to #S is synthesized corresponding with N digital channel, 1≤J<K<L<PLEssT.LTss T.LTS and be all natural number wherein.That is to say, the number of synthesis path (digital channel) and each synthesis path (digital channel) are corresponding with which bay (or which bay) can depend on that the parameter of bay decides.
Although above, in one drives the context of a framework, be illustrated, those skilled in the art can understand, when adopting one to drive many frameworks, can synthesize similar to the abovely.
After the signal after ABF processes is synthesized, for each road in a plurality of synthesis paths, can be divided into homophase (0 °) vector quadrature (90 °) vector, according to antenna beam inclination angle, require adjusting range and/or phase place respectively, and sample and experience the Digital Signal Processing (not shown) such as speed conversion, filtering etc. through analog to digital converter (Analog-Digital Converter, ADC).
In addition, each Lu Junke in N road signal after synthetic thinks multi-carrier signal, and according to N road, carrying out respectively DBF processes and can comprise: each the road multi-carrier signal in the signal of described N road is divided into T road according to wireless access standard or carrier wave frequency range and carries out respectively DBF processing, wherein T is more than or equal to 1 natural number.Further, each the road signal in the multiple signals of processing through ABF in all embodiment of the present invention can be all also multi-carrier signal.
Particularly, in order to carry out DBF processing, each road signal after Digital Signal Processing can pass through filter (as shown in " Div " in Fig. 3 (a), also can be described as frequency mixer) at numeric field, carry out shunt, such as carrying out shunt according to application request based on each wireless access standard (as GSM, LTE and WCDMA etc.) or carrier wave frequency range.Here, can utilize numerically-controlled oscillator (numerical controlled oscillator, NCO) to select along separate routes.In Fig. 3, based on working form, the signal in each digital channel is divided into GSM, WCDMA and LTE, but the invention is not restricted to this, can also divide the signal of the different carrier in same standard, for example, the signal in different carrier frequency in GSM signal be divided.Because each digital channel can be multi-carrier channel, be that signal after synthetic in each digital channel can be multi-carrier signal, so can divide according to the quantity and the corresponding carrier frequency thereof that are input to the different carrier of the signal in this passage, and the quantity of the signal after dividing is not limited to 3.
Afterwards, according to each carrier wave, in numeric field, carry out DBF and process, and deliver to next stage (not shown) and decode, for example, can according to GSM signal, WCDMA signal and LTE signal, decode respectively.Here, as shown in Figure 3, each in GSM signal, WCDMA signal and LTE signal can be decoded according to same phasor1 (I) and orthogonal vector (Q) respectively, wherein, GSM_I signal, WCDMA_I signal and LTE_I signal belong to the first digital channel, and GSM_Q signal, WCDMA_Q signal and LTE_Q signal belong to the second digital channel.Follow-up Base-Band Processing can be existing Base-Band Processing process, little with flesh and blood relation of the present invention, does not repeat them here.
In each digital channel, can also comprise that finite impulse response (FIR) (Finite Impulse Response, FIR) filter respectively the signal after dividing by carrier wave carries out to filtering.
The principle of FIR filter and NCO and act on this area and know altogether, and little with flesh and blood relation of the present invention, so therefore for the easy detailed description of here having omitted.
In addition,, although two-way digital channel is only shown as an example for convenience of description here, those skilled in the art can understand that the present invention is equally applicable to the situation more than two-way digital channel.
According to the embodiment of the present invention, because adopted the structure of ABF+DBF, make it possible to when obtaining good performance, can also reduce costs, promote cost performance, and further make the number of digital channel can be less than the number of analog channel, thereby make can adopt few digital channel of trying one's best in numeric field.Thereby, can effectively reduce the channel resource consumption of digital intermediate frequency, system power dissipation and cost, and can obtain the degree of freedom of larger antenna system Inclination maneuver scope.
Fig. 4 illustrates according to the schematic diagram of the second specific implementation 400 of the receiver of the embodiment of the present invention.
Except the position of ABF unit and low-converter is different, receiver 400 has basic similarly structure and can carry out essentially identical function with receiver 300, therefore, event for simplicity, after this difference of paying close attention between them is described, and similar 26S Proteasome Structure and Function is repeated no more.
In Fig. 3, before the signal to received is carried out ABF processing, it is carried out to down-converted, before low-converter is positioned at ABF unit.But as shown in Figure 4, in receiver 400, the ABF unit in each analog channel is arranged in low-converter (as Fig. 4
shown in) before, before processing, in each in a plurality of synthesis paths, carry out respectively down-conversion after the signal execution to after ABF processes is synthetic and to the signal execution DBF after synthetic.Therefore, each digital channel separately corresponding a plurality of analog channel can further share a low-converter.
Therefore, circuit design be can simplify, power consumption and cost further reduced simultaneously.
Fig. 5 illustrates according to the schematic diagram of the first specific implementation 500 of the transmitter of the embodiment of the present invention.
As shown in Figure 5, transmitter 500 comprises two digital channels and ten bays, and adopts one to drive a framework, but is understandable that, the invention is not restricted to this.
With the example of above-mentioned receiver similarly, transmitter 500 shown in Fig. 5 also comprises two synthesis paths, i.e. the first synthesis path (digital channel) (as shown in the first half of Fig. 5), this first synthesis path comprises homophase (I) and quadrature (Q) two-way, with the second synthesis path (digital channel) (as shown in the latter half of Fig. 5), this second synthesis path also comprises homophase (I) and quadrature (Q) two-way.Armed signal numeric field in this two-way digital channel according to application request based on each working form (as GSM, LTE or WCDMA etc.) or work carrier wave in numeric field adjusting range and/or phase place, process through DBF.For example, as shown in Figure 5, the GSM signal of homophase (I) and quadrature (Q), WCDMA signal and LTE signal are imported in each in two-way digital channel, and according to carrier wave, experience respectively DBF and process, wherein, GSM1 signal, WCDMA1 signal and LTE1 signal belong to the first digital channel (synthesis path), and GSM2 signal, WCDMA2 signal and LTE2 signal belong to the second digital channel (synthesis path).Here, according to work carrier wave, signal being carried out to shunt can utilize NCO to realize.
In addition, signal in all embodiment of the present invention in each synthesis path, be that each Lu Junke in the signal of N road thinks multi-carrier signal, and the signal that will send is processed and can be comprised according to N road difference combine digital wave beam forming (DBF): each the road multi-carrier signal in the signal of described N road is divided into T road according to wireless access standard or carrier wave frequency range and carries out respectively DBF processing, wherein T is more than or equal to 1 natural number.
Afterwards, the signal after DBF processes is a plurality of transmission paths (the same with the RX path in the specific implementation of receiver, also to can be described as analog channel) along separate routes.With receiver section similarly, for example can utilize splitter (as shown in " Div " of the mid portion in Fig. 5) is a plurality of transmission paths by the signal after DBF processes along separate routes, and and then corresponding to a plurality of bays.Preferably, when a plurality of transmission paths and a plurality of bay in the situation that adopting one to drive a framework, one by one at once, can obtain the maximum degree of freedom of the Inclination maneuver scope of whole antenna system.But the embodiment of the present invention is not limited to this, can also take other one to drive many frameworks, also can improve the degree of freedom of Inclination maneuver scope.
Particularly, for example, this splitter also can depend on that transmitting (target) antenna pattern, the parameter based on each bay (such as main lobe size, secondary lobe big or small etc.) carry out shunt.Multiple signals after shunt respectively the upconverter by separately (as left side in Fig. 5
shown in) by up-conversion, then in analog channel separately, experience respectively ABF and process with adjusting range and/or phase place.Finally, the multiple signals after ABF processes amplify and are transmitted to corresponding bay for radiateing through amplifier respectively.Each road in the multiple signals of processing through ABF in all embodiment of the present invention can be all also multi-carrier signal.
In the transmitter 500 shown in Fig. 5, in order to solve because of power output rollback (Output Power Back Off, the problem of the reduction of the delivery efficiency OPBO) causing, can utilize peak factor to reduce (Crest Factor Reduction, CFR) and linearization technique.CFR claims again wave absorption algorithm, and its crest by cancellation signal reduces the papr (Peak to Average Power Ratio, PAPR) of multicarrier input signal.Linearization technique, for the linear working range of extended power amplifier, can comprise the modes such as analog predistortion (Analog Pre-distortion, APD) and digital pre-distortion (Digital Pre-distortion, DPD).Their principle is known in the art, thus therefore for simplicity omitted the detailed description to them here.That in the example shown in Fig. 5, adopt is CFR and DPD, but the invention is not restricted to this, and those skilled in the art can adopt one or more in CFR, DPD and APD according to design requirement and applied environment.
Similarly, although two-way digital channel is only shown as an example for convenience of description here, those skilled in the art can understand that the present invention is equally applicable to the situation more than two-way digital channel.
According to the embodiment of the present invention, by adopting the structure of ABF+DBF, make it possible to when obtaining good performance, can also reduce costs, and further make the number of digital channel can be less than the number of analog channel, thereby make can adopt few digital channel of trying one's best in numeric field.Thereby, can effectively reduce the channel resource consumption of digital intermediate frequency, system power dissipation and cost, and can obtain the degree of freedom of larger antenna system Inclination maneuver scope.
Fig. 6 illustrates the second specific implementation 600 according to the transmitter of the embodiment of the present invention.
Similarly, in Fig. 5, before each the ABF unit in analog channel, be provided with upconverter (as left side in Fig. 5
shown in),, after the signal after DBF processes is a plurality of transmission paths along separate routes, in each in a plurality of transmission paths, carry out respectively up-conversion, and then carry out respectively ABF and process.But as shown in Figure 6, in transmitter 600, upconverter is (as left side in Fig. 6
shown in) be positioned at splitter and ABF unit before, before the signal after DBF processes is a plurality of transmission paths along separate routes, in each of a plurality of He Lu path, carry out respectively up-conversion, then the signal after up-conversion is carried out respectively to ABF again for a plurality of transmission paths along separate routes and process.
Circuit design be can simplify like this, power consumption and cost further reduced simultaneously.
Although adopting digital pre-distortion (Digital Pre-Distortion shown in Fig. 5 and Fig. 6, DPD) technology is carried out linearisation to the signal that will launch, but also can adopt analog predistortion (AnalogPre-Distortion, APD) to carry out linearisation.Fig. 7 illustrates according to the employing APD of the embodiment of the present invention and carries out linearizing another transmitter 700.Except adopting APD, the transmitter 700 shown in Fig. 7 has identical structure with the transmitter 600 shown in Fig. 6.
Adopting APD to carry out in linearizing situation, in each of a plurality of transmission paths, carrying out respectively after ABF processes, respectively the signal in each transmission path is being carried out to APD.Certainly, the invention is not restricted to this, can also adopt other suitable technology to carry out linearisation.
Fig. 8 illustrate according to the embodiment of the present invention, wherein based on each in a plurality of He Lu path, carry out linearizing schematic diagram.Although in the drawings linearization technique is depicted as to DPD, the invention is not restricted to this, can also adopt other suitable linearization techniques, such as APD.
As shown in Figure 8, close the corresponding a plurality of transmission paths (analog channel) of Lu Lujing (digital channel) and can share a feedback path with one, adopt identical feedback result (such as amplitude and/or phase place) to adjust the parameter of linearization technique.Because the signal of a plurality of analog channels corresponding with same digital channel can show good performance when being synthesized as mentioned above, so correspondingly, in feedback path, being synthesized, the signal being coupled out respectively from a plurality of analog channels also carries out ABF processing, and each ABF can take with each ABF on transmission channel respectively corresponding configuration adjust amplitude and/or the phase place of signal, so that also show good performance like synthetic class signal in feedback path, thereby the signal power that can guarantee to give linearizer is larger, and then can guarantee to carry out effective linearisation.
Fig. 9 is the exemplary block diagram illustrating according to the structure of the receiver 900 of the embodiment of the present invention.
As shown in Figure 9, receiver 900 can comprise ABF unit 901, DBF unit 902 and decoder 903.
ABF unit 901 is processed for the signal receiving via a plurality of bays is carried out respectively to ABF according to M road, and wherein M is more than or equal to 2 natural number.DBF unit 902 is carried out respectively DBF for the M road signal to after ABF processes according to N road and is processed, and wherein N is more than or equal to 2 natural number.Decoder 903 is for processing that the signal after DBF processes is decoded.
According to the embodiment of the present invention, receiver 900, by the mode that adopts ABF and DBF to combine, makes it possible to, when obtaining good performance, can also reduce costs, thereby promotes cost performance.
In addition, receiver 900 can also comprise synthesizer (not shown), for the M road signal after DBF processes is synthesized to N road, so that DBF is carried out respectively to the N road signal after synthetic in described DBF unit, processes, and wherein N is less than M.
Figure 10 is the exemplary block diagram illustrating according to the structure of the transmitter 1000 of the embodiment of the present invention.
As shown in Figure 10, transmitter 1000 comprises DBF unit 1001, ABF unit 1002 and transmitter unit 1003.
DBF unit 1001 is processed for the signal that will send is carried out respectively to DBF according to N road, and wherein N is more than or equal to 2 natural number.ABF unit 1002 is carried out ABF for the signal to after DBF processes and is processed, and wherein M is more than or equal to 2 natural number.Transmitter unit 1003 is for the signal after ABF processes via a plurality of bay transmittings.
According to the embodiment of the present invention, transmitter 1000, by the mode that adopts ABF and DBF to combine, makes it possible to, when obtaining good performance, can also reduce costs, thereby promotes cost performance.
In addition, transmitter 1000 can also comprise splitter, for being M road by the N road division of signal after DBF processes, so that the M road signal after the shunt of 1002 pairs of described ABF unit is carried out respectively ABF, processes, and wherein, N is less than M.
Be understandable that, the specific implementation of the receiver shown in above Fig. 3 to Fig. 7 or transmitter is only for giving an example, analog-to-digital conversion in receiver except the combination of ABF and DBF, down-conversion, filtering, the processes such as IQ processing can be mode of the prior art, those skilled in the art can be according to known to it, these parts being out of shape or being increased and decreased, the mode that the present invention is not limited to anticipate shown in figure or structure, similarly, IQ in transmitter except the combination of ABF and DBF processes, digital-to-analogue conversion, up-conversion, the processes such as filtering can be mode of the prior art, those skilled in the art can be according to known to it, these parts being out of shape or being increased and decreased, the mode that the present invention is not limited to anticipate shown in figure or structure.In addition, the embodiment of the present invention also provides a kind of antenna system, can comprise receiver and/or transmitter that above-described embodiment provides.The embodiment of the present invention can be applied to the antenna system such as active antenna system etc.
The embodiment of the present invention also provides a kind of communication system, comprises above-mentioned antenna system.
It should be noted in the discussion above that for clarity and conciseness, only show the part relevant to the embodiment of the present invention in Fig. 3 to Figure 10, but it will be appreciated by those skilled in the art that, the equipment shown in Fig. 3 to Figure 10 or device can comprise the unit that other are necessary.
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 electronic hardware, computer software or the combination of the two, for the interchangeability of hardware and software is clearly described, composition and the step of each example described according to function in the above description in general manner.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 implementations 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, both 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 a unit two or more unit.Above-mentioned integrated unit both can adopt the form of hardware to realize, and also can adopt the form of SFU software functional unit to realize.
If the form of SFU software functional unit of usining described integrated 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 all or part of of the part that technical scheme of the present invention contributes to prior art in essence in other words or 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-OnlyMemory), random access memory (RAM, Random Access Memory), magnetic disc or CDs.
Also it is pointed out that in apparatus and method of the present invention, obviously, each parts or each step can decompose and/or reconfigure.These decomposition and/or reconfigure and should be considered as equivalents of the present invention.And, carry out the step of above-mentioned series of processes and can order naturally following the instructions carry out in chronological order, but do not need necessarily according to time sequencing, to carry out.Some step can walk abreast or carry out independently of one another.
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 (20)
1. for receiving a method for signal, it is characterized in that, the method comprises:
The signal receiving via a plurality of bays is carried out respectively to analog beam figuration (ABF) according to M road and process, wherein M is more than or equal to 2 natural number;
M road signal after ABF processes is synthesized to N road signal, to combine digital wave beam forming (DBF) processing respectively of the N road signal after synthetic, each road in the signal of described N road is multi-carrier signal, describedly N road signal after synthetic is carried out respectively to DBF process and comprise that each road of described N road signal is divided into T road according to wireless access standard or carrier wave frequency range carries out respectively DBF and process, wherein N is more than or equal to 2 and be less than the natural number of M, and T is more than or equal to 1 natural number; And
Signal after DBF processes is carried out to decoding to be processed.
2. method according to claim 1, is characterized in that: the number of described a plurality of bays equals M, and each bay is corresponding with each road in the signal of M road.
3. method according to claim 1, is characterized in that, the method further comprises:
Before M road signal is carried out to ABF processing, respectively down-conversion is carried out in each road in this M road signal.
4. according to the method described in any one in claims 1 to 3, it is characterized in that, the method further comprises:
Carry out respectively DBF processing after the M road signal after ABF processes is synthesized to N road signal and to the N road signal after synthetic before, respectively down-conversion is carried out in each road in this N road signal.
5. the method for transmitting, is characterized in that, the method comprises:
The signal that will send is processed according to N road signal difference combine digital wave beam forming (DBF), each road in the signal of described N road is multi-carrier signal, describedly according to N road signal, carry out respectively DBF and process and to comprise that each road of described N road signal is divided into T road according to wireless access standard or carrier wave frequency range carries out respectively DBF and process, wherein N is more than or equal to 2 natural number, and T is more than or equal to 1 natural number;
By the N road division of signal after DBF processes, be M road, the M road signal after shunt carried out respectively to analog beam figuration (ABF) and process, wherein M is more than or equal to 2 and be greater than the natural number of N; And
Signal via a plurality of bay transmittings after ABF processes.
6. method according to claim 5, is characterized in that, each road in the signal of described M road is multi-carrier signal.
7. method according to claim 5, is characterized in that: the number of described a plurality of bays equals M, and each bay is corresponding with each road in the signal of M road.
8. method according to claim 5, is characterized in that, described method further comprises:
After the N road division of signal after DBF processes is M road, respectively up-conversion is carried out in each road in this M road signal.
9. method according to claim 5, is characterized in that, described method further comprises:
Before N road division of signal is M road, up-conversion is carried out respectively in each road in the signal of N road.
10. according to the method described in any one in claim 5 to 9, it is characterized in that, described method further comprises:
The execution linearisation of often coming based in the signal of N road.
11. 1 kinds of receivers, is characterized in that, this receiver comprises:
Analog beam figuration (ABF) unit, carries out respectively ABF for the signal to via a plurality of antenna receptions according to M road and processes, and wherein M is more than or equal to 2 natural number;
Digital beam forming (DBF) unit, for the M road signal after ABF processes is synthesized to N road signal, N road signal after synthetic is carried out respectively to DBF to be processed, each road in the signal of described N road is multi-carrier signal, describedly N road signal after synthetic is carried out respectively to DBF process and comprise that each road of described N road signal is divided into T road according to wireless access standard or carrier wave frequency range carries out respectively DBF and process, wherein N is more than or equal to 2 and be less than the natural number of M, and T is more than or equal to 1 natural number; And
Decoder, carries out decoding for the signal to after DBF processes and processes.
12. receivers according to claim 11, is characterized in that: the number of described a plurality of bays equals M, and each bay is corresponding with each road in the signal of M road.
13. according to the receiver described in claim 11 or 12, it is characterized in that, this receiver further comprises:
Low-converter, is located between described bay and described ABF unit, for before M road signal is carried out to ABF processing, respectively down-conversion is carried out in each road in this M road signal.
14. receivers according to claim 11, is characterized in that, this receiver further comprises:
Low-converter, between described synthesizer and described DBF unit, for carry out respectively DBF processing after the M road signal after ABF processes is synthesized to N road signal and to the N road signal after synthetic before, respectively down-conversion is carried out in each road in this N road signal.
15. 1 kinds of transmitters, is characterized in that, this transmitter comprises:
Digital beam forming (DBF) unit, for being carried out respectively to DBF according to N road signal, processes the signal that will send, each road in the signal of described N road is multi-carrier signal, describedly according to N road signal, carry out respectively DBF and process and to comprise that each road of described N road signal is divided into T road according to wireless access standard or carrier wave frequency range carries out respectively DBF and process, wherein N is more than or equal to 2 natural number, and T is more than or equal to 1 natural number;
Analog beam figuration (ABF) unit, for being M road by the N road division of signal after DBF processes, carrying out respectively ABF to the M road signal after shunt and processes, and wherein M is more than or equal to 2 and be greater than the natural number of N; And
Transmitter unit, for the signal after ABF processes via a plurality of antenna transmissions.
16. transmitters according to claim 15, is characterized in that: the number of described a plurality of bays equals M, and each bay is corresponding with each road in the signal of M road.
17. transmitters according to claim 15, is characterized in that, described transmitter further comprises:
Upconverter, between described splitter and ABF unit, for carry out respectively ABF processing after the N road division of signal after DBF processes is M road and to the M road signal after shunt before, carries out up-conversion to each road in this M road signal respectively.
18. transmitters according to claim 15, is characterized in that, described transmitter further comprises:
Upconverter, between described DBF unit and splitter, for be M road after N road signal is carried out to DBF respectively and by N road division of signal before, carries out respectively up-conversion to each road in the signal of N road.
19. according to claim 15 to the transmitter described in any one in 18, it is characterized in that, described transmitter further comprises:
Linearizer, for the execution linearisation of often coming based on N road signal.
20. 1 kinds of antenna systems, comprise according to claim 11 to the receiver described in any one in 14 and/or according to claim 15 to the transmitter described in any one in 19.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| PCT/CN2012/074197 WO2012103853A2 (en) | 2012-04-17 | 2012-04-17 | Signal receiving and sending methods, transmitter, receiver, and system thereof |
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| CN102763446B true CN102763446B (en) | 2014-09-17 |
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| CN105637778B (en) * | 2014-07-11 | 2019-02-19 | 华为技术有限公司 | A kind of electronic equipment |
| CN104954071B (en) * | 2015-07-07 | 2017-10-03 | 中邮科通信技术股份有限公司 | A kind of digital Optical fiber relay systems of LTE Advanced and its implementation |
| CN108140947A (en) * | 2015-10-19 | 2018-06-08 | 华为技术有限公司 | Analog-digital hybrid array antenna and communication equipment |
| KR102487332B1 (en) | 2016-06-21 | 2023-01-10 | 광동 오포 모바일 텔레커뮤니케이션즈 코포레이션 리미티드 | Signal transmission method, network equipment and terminal equipment |
| CA3065407C (en) | 2017-05-31 | 2022-03-15 | Huawei Technologies Co., Ltd. | Pre-distortion processing method and apparatus |
| CN107395255B (en) * | 2017-07-05 | 2020-06-16 | 南京理工大学 | Robust hybrid beam forming method based on convex optimization |
| CN111786676B (en) * | 2020-09-07 | 2020-12-01 | 成都正扬博创电子技术有限公司 | Circuit for improving anti-interference performance of analog signal in analog-digital hybrid circuit |
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| WO2011161198A1 (en) * | 2010-06-23 | 2011-12-29 | Astrium Limited | An antenna |
| CN102365789A (en) * | 2009-02-02 | 2012-02-29 | 联邦科学技术研究组织 | Hybrid adaptive antenna array |
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| EP2388931B1 (en) * | 2010-05-21 | 2017-09-13 | Imec | Method and system for mixed analog/digital beamforming in wireless communication systems |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102365789A (en) * | 2009-02-02 | 2012-02-29 | 联邦科学技术研究组织 | Hybrid adaptive antenna array |
| WO2011161198A1 (en) * | 2010-06-23 | 2011-12-29 | Astrium Limited | An antenna |
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| WO2012103853A3 (en) | 2013-03-21 |
| WO2012103853A2 (en) | 2012-08-09 |
| CN102763446A (en) | 2012-10-31 |
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