CN105634628B

CN105634628B - Signal characteristic difference condition caused by TRX calibrator (-ter) units and TRX determines method

Info

Publication number: CN105634628B
Application number: CN201510953205.6A
Authority: CN
Inventors: 何平华; 李少明; 刘学儒
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2011-06-24
Filing date: 2011-06-24
Publication date: 2018-05-11
Anticipated expiration: 2031-06-24
Also published as: CN105634628A

Abstract

A kind of transceiver calibrator (-ter) unit, including：N number of digital beam-forming module, the N number of and one-to-one transceiver of digital beam-forming module, the N number of and one-to-one coupler of transceiver, further include the first calibrated channel, the second calibrated channel, main connecting line and processor.Main connecting line and processor are all located between the first calibrated channel and the second calibrated channel.One end of each coupler connects main connecting line, and the other end connects corresponding transceiver；Processor, digital beam-forming module and the one-to-one transceiver of digital beam-forming module and the one-to-one coupler of transceiver, main connecting line, the first calibrated channel, processor are linked in sequence to form the first loop.Processor, digital beam-forming module and the one-to-one transceiver of digital beam-forming module and the one-to-one coupler of transceiver, main connecting line, the second calibrated channel, processor are linked in sequence to form the second loop.

Description

Signal characteristic difference condition caused by TRX calibrator (-ter) units and TRX determines method

Technical field

The present invention relates to field of communication technology, signal caused by more particularly to a kind of transceiver T RX calibrator (-ter) units and TRX Feature difference situation determines method.

Background technology

Being connected to the inside of base station of multiple antennas generally has multiple transceivers (Transceiver, abbreviation TRX), in order to Satisfactory radiation lobe figure (Radiation pattern) is formed in the air, it is desirable to encourages the width of every road signal of multiple antennas Degree, phase, delay feature have to comply with specific distribution, that is to say, that it is required that amplitude, phase per road transceiver output signal Position, delay feature meet specific distribution.But even if all using same device per road transceiver, but due to transceiver Core devices be still analog device, thus the signal caused by per road transceiver feature difference (i.e. the amplitude of signal, Phase, delay variance) still may be different, so needing to mend the feature difference of the signal caused by every road transceiver Repay, i.e., transceiver is calibrated.

Fig. 1 shows a kind of base station structure diagram using parallel calibration mode that the prior art provides, in order to clearly say Bright the prior art, is also shown for aerial array (Radiation Array) in Fig. 1.Wherein, base station includes two parts, i.e. RRU (Radio Remote Unit, Remote Radio Unit) and BBU (Building Base band Unit, indoor Base-Band Processing list Member).Interface between RRU and BBU is CPRI (Common Public Radio Interface, common public radio interface). Include inside RRU：It is S/P modules, COM modules, multiple DBF (Digital Beam Forming, digital beam shaping) module, more A TRX and multiple CP (Coupler, coupler), multiplexer (Multiplexer), calibration channel (Calibration channel).Wherein, S/P modules are serioparallel exchange module, it receives CPRI, signal from BBU (such as calibrating Signal, abbreviation original calibration signals) carry out serioparallel exchange, obtain multichannel I/Q signal, it is assumed that be N roads I/Q signal, N roads I/Q signal It is separately input in N number of DBF modules, N number of DBF modules are in completely the same original state, the output signal of N number of DBF modules Be input in N number of TRX, N number of TRX is modulated signal, demodulates, Up/Down Conversion, amplification, filtering, A/D, D/A etc. processing, will Radiofrequency signal after processing is sent to aerial array.N number of CP extracts the radio frequency letter that N number of TRX modules are sent to aerial array respectively Number, multiplexer is sent to, N number of CP radiofrequency signals sent are multiplexed into calibration channel by multiplexer, and calibration channel believes each road radio frequency Number it is modulated, demodulates, Up/Down Conversion, filtering, obtaining final calibration signal after the processing such as A/D, D/A, seeks final calibration signal With the difference of primary standard signal, and then the signal characteristic difference caused by N number of TRX is obtained, then control each DBF modules to carry out Feature compensation, to be calibrated to TRX.

Each CP parallel connection in such scheme, due to calibrated channel can only know per TRX to CP, CP all the way to multiplexer, Multiplexer is to the feature difference of calibrated channel, but cannot be distinguished by this feature difference is caused by TRX, or CP is to multiplexer Line caused by, so in order to seek the signal characteristic difference caused by N number of TRX, it is desirable to each road CP to the path of calibrated channel Caused signal characteristic difference is identical.

Fig. 2 shows a kind of base station structure diagram using serial calibrating mode that the prior art provides, and Fig. 2 is different from Fig. 1 Part is：One end order of each CP is connected on main connecting line, and the other end of each CP is connected with corresponding TRX, in order to seek N Signal characteristic difference caused by a TRX is, it is necessary to measure each CP to the signal characteristic difference caused by the path of calibrated channel.

Existing serial calibrating mode has as a drawback that：

In order to seek the signal characteristic difference caused by N number of TRX, it is necessary to measure caused by each CP to the path of calibrated channel Signal characteristic difference.

The content of the invention

It is true that the embodiment of the present invention provides signal characteristic difference condition caused by a kind of transceiver T RX calibrator (-ter) units and TRX Determine method, it is not necessary to measure each CP to the signal characteristic difference caused by the path of calibrated channel, it is possible to obtain TRX and drawn The signal characteristic difference condition risen, so as to carry out accurate calibration to each TRX.

One aspect of the present invention provides：

A kind of transceiver T RX calibrator (-ter) units, it includes：N number of digital beam forming module DBF, N number of and DBF mono- are a pair of The TRX that answers, N number of be more than or equal to 2, further include the first calibrated channel and the second school with the one-to-one coupler CP of TRX, N Quasi- passage, the main connecting line between the first calibrated channel and the second calibrated channel, one end of N number of CP connect the main connection Line, the other end connect corresponding TRX, and the TRX calibrator (-ter) units further include processor；

Wherein, processor, DBF and the one-to-one TRX of the DBF and the one-to-one CP of the TRX, main connection Line, the first calibrated channel, processor are linked in sequence to form the first loop；Processor, DBF and the one-to-one TRX of the DBF, CP one-to-one with the TRX, main connecting line, the second calibrated channel, processor are linked in sequence to form the second loop；

The processor, for sending raw digital signal, receives first loop and second loop pair respectively Digital signal after the raw digital signal processing；When signal characteristic difference is identical caused by each DBF, according to the first loop Digital signal after raw digital signal processing and the feature difference of raw digital signal are equal to caused by the first loop The sum of signal characteristic difference and the second loop the digital signal after raw digital signal processing is believed with original figure Number feature difference be equal to the sum of signal characteristic difference caused by the second loop, determine the signal characteristic caused by benchmark TRX The difference of difference and the signal characteristic difference caused by other TRX in addition to the benchmark TRX, wherein benchmark TRX is N number of TRX In any one TRX.

Another aspect of the present invention provides：

A kind of TRX calibrator (-ter) units, it includes：N number of digital beam forming module DBF, N number of and DBF one-to-one TRX, N It is a to be more than or equal to 2 with TRX one-to-one coupler CP, N, calibrated channel is further included, is had a first end and a second end Main connecting line, one end of N number of CP connect the main connecting line, and the other end connects corresponding TRX；

Wherein, calibrated channel under the control of a processor, connects the first end of main connecting line or the second end；When It is processor, DBF, TRX one-to-one with the DBF, one-to-one with the TRX when calibrated channel connects the first end CP, calibrated channel, processor are linked in sequence to form the first loop；When calibrated channel connects the second end, processor, DBF, with The one-to-one TRX of the DBF, with the one-to-one CP of the TRX, calibrated channel, processor be linked in sequence to form the second ring Road；

The processor, for controlling calibrated channel to connect the first end or the second end, institute is met in calibrated channel When stating first end, raw digital signal is sent, first loop is received and the numeral after raw digital signal processing is believed Number；When calibrated channel connects the second end, raw digital signal is sent, second loop is received and the original figure is believed Number processing after digital signal；When signal characteristic difference is identical caused by each DBF, according to the first loop to the original figure The feature difference of digital signal and raw digital signal after signal processing is equal to the signal characteristic difference caused by the first loop The sum of, and from the second loop to the digital signal and the feature difference of raw digital signal after raw digital signal processing Equal to the sum of signal characteristic difference caused by the second loop, determine that the signal characteristic difference caused by benchmark TRX is described with removing The difference of the signal characteristic difference caused by other TRX beyond benchmark TRX, wherein benchmark TRX are any one in N number of TRX TRX。

Another aspect of the invention provides：

Signal characteristic difference condition determines method caused by a kind of TRX, including：

Send raw digital signal；

First loop and second loop are received respectively to the digital signal after raw digital signal processing； Wherein, the first loop is by processor, DBF and the one-to-one TRX of the DBF and the one-to-one CP of the TRX, main company Wiring, the first calibrated channel, processor are linked in sequence what is formed；Second loop is a pair of by processor, DBF and the DBF mono- The TRX and the one-to-one CP of the TRX, main connecting line, the second calibrated channel, processor answered is linked in sequence what is formed；

When signal characteristic difference is identical caused by each DBF, after being handled according to the first loop the raw digital signal Digital signal and the feature difference of raw digital signal be equal to the sum of signal characteristic difference caused by the first loop, Yi Ji Second Ring Road is equal to the second loop to the digital signal after raw digital signal processing and the feature difference of raw digital signal The sum of caused signal characteristic difference, determine signal characteristic difference caused by benchmark TRX with addition to the benchmark TRX The difference of signal characteristic difference caused by other TRX, wherein benchmark TRX are any one TRX in N number of TRX.

Another aspect of the invention provides：

Signal characteristic difference determines method caused by a kind of TRX, including：

Control calibrated channel connects the first end of main connecting line, sends raw digital signal, receives the raw digital signal The digital signal returned by first loop；Wherein, the first loop be processor, it is DBF, one-to-one with the DBF TRX and the one-to-one CP of the TRX, main connecting line, calibrated channel, processor are linked in sequence what is formed；

Control calibrated channel connects the second end of main connecting line, sends the raw digital signal, receives the original figure Signal passes through the digital signal that second loop returns；Wherein, the second loop is that processor, DBF and the DBF mono- are a pair of The TRX and the one-to-one CP of the TRX, main connecting line, calibrated channel, processor answered is linked in sequence what is formed；

One embodiment of the invention is by processor, DBF, TRX one-to-one with the DBF, one-to-one with the TRX CP, main connecting line, the first calibrated channel, processor are linked in sequence to form the first loop；Processor, DBF and the DBF are one by one Corresponding TRX and the one-to-one CP of the TRX, main connecting line, the second calibrated channel, processor are linked in sequence to form second Loop, the feature difference for the digital signal that processor is received and dispatched according to oneself on two loops are respectively equal to the two loops and are drawn The sum of signal characteristic difference risen, it is not necessary to measure each CP to the signal characteristic difference caused by the path of calibrated channel, just It can determine the difference of the signal characteristic difference and the signal characteristic difference caused by other TRX caused by benchmark TRX, so as to Accurate calibration is carried out to each TRX.

Another embodiment of the present invention is when calibrated channel connects the first end of main connecting line, by processor, DBF and the DBF One-to-one TRX and the one-to-one CP of the TRX, calibrated channel, processor are linked in sequence to form the first loop；Work as school When quasi- passage connects the second end of main connecting line, by processor, DBF and the one-to-one TRX of the DBF and TRX one by one Corresponding CP, calibrated channel, processor are linked in sequence to form the second loop, and processor is received and dispatched according to oneself on two loops The feature difference of digital signal is respectively equal to the sum of signal characteristic difference caused by the two loops, it is not necessary to measures each CP To the signal characteristic difference caused by the path of calibrated channel, it is possible to determine signal characteristic difference caused by benchmark TRX with The difference of signal characteristic difference caused by other TRX, so as to carry out accurate calibration to each TRX.

Brief description of the drawings

In order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be to needed in the embodiment attached Figure is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the present invention, for this area For those of ordinary skill, without creative efforts, other attached drawings can also be obtained according to these attached drawings.

Fig. 1 is the base station structure diagram using parallel calibration mode that the prior art provides；

Fig. 2 is the base station structure diagram for the serial calibrating mode of use that the prior art provides；

Fig. 3 is a kind of TRX calibrator (-ter) units structure chart provided in an embodiment of the present invention using serial calibrating mode；

Fig. 4 is the specific transmission direction schematic diagram of signal in the direction of the launch provided in an embodiment of the present invention；

Fig. 5 is the specific transmission direction schematic diagram of the upward signal of recipient provided in an embodiment of the present invention；

Fig. 6 is another TRX calibrator (-ter) units structure chart provided in an embodiment of the present invention using serial calibrating mode；

Fig. 7 is another TRX calibrator (-ter) unit structure chart provided in an embodiment of the present invention using serial calibrating mode；

Fig. 8 is another TRX calibrator (-ter) unit structure chart provided in an embodiment of the present invention using serial calibrating mode；

Fig. 9 be a kind of TRX provided in an embodiment of the present invention caused by signal characteristic difference determine method flow diagram；

Figure 10 is that another kind signal characteristic difference caused by TRX provided in an embodiment of the present invention determines method flow diagram.

Embodiment

Refering to Fig. 3, the embodiment of the present invention provides a kind of TRX calibrator (-ter) units, which can be base station, it is wrapped Include：N number of DBF 20, it is N number of with the one-to-one TRX 30 of DBF, it is N number of with the one-to-one CP 40 of TRX, the first calibrated channel 50, Second calibrated channel 60, main connecting line 55 and processor 10 between the first calibrated channel 50 and the second calibrated channel 60； Wherein, N number of DBF includes the first DBF (i.e. DBF₁), the 2nd DBF (i.e. DBF₂), the 3rd DBF (i.e. DBF₃), the 4th DBF (i.e. DBF₄) ... N DBF (i.e. DBF_N)；N number of TRX includes the first TRX (i.e. TRX₁), the 2nd TRX (i.e. TRX₂), the 3rd TRX (i.e. TRX₃), the 4th TRX (i.e. TRX₄) ... N TRX (i.e. TRX_N)；N number of CP includes the first CP (i.e. CP₁), the 2nd CP (i.e. CP₂)、 3rd CP (i.e. CP₃), the 4th CP (i.e. CP₄) ... N CP (i.e. CP_N)。

Wherein, one end of N number of CP 40 connects the main connecting line 55, and the other end connects corresponding TRX 30；Processing Device 10, DBF 20 and the one-to-one TRX 30 of the DBF 20 and the one-to-one CP 40 of the TRX 30, main connecting line 55th, the first calibrated channel 50, processor 10 are linked in sequence to form the first loop；Processor 10, DBF 20 and the DBF 20 1 One corresponding TRX 30 and the one-to-one CP 40 of the TRX 30, main connecting line 55, the second calibrated channel 60, processor 10 It is linked in sequence to form the second loop；Such as shown in figure 3, processor 10, DBF₁And the DBF₁One-to-one TRX₁And The TRX₁One-to-one CP₁, main connecting line 55, the first calibrated channel 50, processor 10 be linked in sequence to form the first loop； Processor 10, DBF₁And the DBF₁One-to-one TRX₁And the TRX₁One-to-one CP₁, main connecting line 55, second Calibrated channel 60, processor 10 are linked in sequence to form the second loop.

The processor, for sending raw digital signal, receives first loop and second loop pair respectively Digital signal after the raw digital signal processing；When signal characteristic difference is identical caused by each DBF, according to the first loop Digital signal after raw digital signal processing and the feature difference of raw digital signal are equal to caused by the first loop The sum of signal characteristic difference and the second loop the digital signal after raw digital signal processing is believed with original figure Number feature difference be equal to the sum of signal characteristic difference caused by the second loop, determine the signal characteristic caused by benchmark TRX The difference of difference and the signal characteristic difference caused by other TRX in addition to the benchmark TRX, wherein benchmark TRX is N number of TRX In any one TRX, benchmark TRX can be TRX₁Or TRX_N, the realization of the present invention is not influenced.Benchmark TRX is drawn Rise signal characteristic difference be：Changes in amplitude, phase place change and/or the delay of signal caused by benchmark TRX, i.e. benchmark TRX Output signal of the input signal after benchmark TRX relative to the changes in amplitude of the input signal, phase place change and/or prolong When.

The processor, according to the signal characteristic difference caused by identified benchmark TRX and can also remove the benchmark The difference of the signal characteristic difference caused by other TRX beyond TRX, control each DBF to signal characteristic difference caused by each TRX into Row compensation, makes the DBF on each loop identical with the signal characteristic difference caused by TRX.It is following to illustrate：As shown in figure 3, For processor 10, DBF₁And the DBF₁One-to-one TRX₁And the TRX₁One-to-one CP₁, main connecting line 55, First calibrated channel 50, processor 10 are linked in sequence the first loop to be formed；And processor 10, DBF₂And the DBF₂One One corresponding TRX₂And the TRX₂One-to-one CP₂, main connecting line 55, the first calibrated channel 50,10 order of processor connect Connect the first loop to be formed；And processor 10, DBF_NAnd the DBF_NOne-to-one TRX_NAnd the TRX_NCorrespond CP_N, main connecting line 55, the first calibrated channel 50, processor 10 be linked in sequence the first loop to be formed, DBF₁With TRX₁Drawn The signal characteristic difference risen, DBF₂With TRX₂Caused signal characteristic difference, DBF_NWith TRX_NCaused signal characteristic difference Three should be identical, to ensure to encourage the amplitude of every road signal of multiple antennas, phase, delay feature to meet specific distribution.

The embodiment is retouched in detail exemplified by the signal characteristic difference caused by TRX is sought using the direction of the launch as follows State：

Processor 10, for sending raw digital signal to N number of DBF.

N number of DBF 20, for each raw digital signal from processor to be sent to corresponding TRX.I.e. each original Beginning digital signal passes through DBF respectively₁、DBF₂、DBF₃、DBF₄……DBF_N, each TRX is reached with same signal characteristic₁、TRX₂、 TRX₃、TRX₄……TRX_N。

N number of TRX 30, for handling the raw digital signal from DBF, exports radiofrequency signal；That is TRX₁、 TRX₂、TRX₃、TRX₄……TRX_NDA conversions, modulation, upconversion process are carried out to the raw digital signal of reception respectively, obtained Radiofrequency signal, and export radiofrequency signal.

N number of CP 40, for extracting the radiofrequency signal of N number of TRX outputs；

Main connecting line 55, for the radiofrequency signal of N number of TRX outputs to be transferred to first calibrated channel 50 respectively With second calibrated channel 60；

First calibrated channel 50, the radiofrequency signal for being extracted to the N number of CP for carrying out autonomous connecting line 55 are handled, obtained To N number of first kind digital signal, N number of first kind digital signal is sent to processor 10；Specifically, the first calibrated channel 50 is right The radiofrequency signal that N number of CP is extracted carries out down-converted, demodulation, AD conversion, obtains N number of first kind digital signal.

Second calibrated channel 60, the radiofrequency signal for being extracted to the N number of CP for carrying out autonomous connecting line 55 are handled, obtained To N number of he second-class number word signal, N number of he second-class number word signal is sent to processor 10.Specifically, the second calibrated channel 50 is right The radiofrequency signal that N number of CP is extracted carries out down-converted, demodulation, AD conversion, obtains N number of he second-class number word signal.

Processor 10, is additionally operable to receive N number of first kind digital signal and N number of he second-class number word signal.

For the first loop, processor establishes equation below group one：

SDBF₁+STRX₁+SCP₁₁+ SCALA=SA₁

SDBF₂+STRX₂+SCP₂₁+ SCALA=SA₂

……

SDBF_N+STRX_N+SCP_N1+ SCALA=SA_N

Wherein, SDBF₁、SDBF₂…..SDBF_NDBF is represented respectively₁、DBF₂……DBF_NCaused signal characteristic difference, Wherein, DBF₁、DBF₂……DBF_NCaused signal characteristic difference is：DBF₁、DBF₂……DBF_NThe width of caused signal Degree change, phase place change and/or delay, are specially：DBF (such as DBF₁、DBF₂……DBF_N) input signal pass through the DBF Afterwards output signal relative to the input signal changes in amplitude, phase place change and/or delay.In the embodiment of the present invention, due to Each DBF resets during calibration, then the signal characteristic difference caused by each DBF is identical, it can be assumed that SDBF₁、SDBF₂…..SDBF_NAll For 0.

Wherein, STRX₁、STRX₂……STRX_NTRX is represented respectively₁、TRX₂……TRX_NCaused signal characteristic difference. TRX₁Caused signal characteristic difference is：The TRX₁Input signal pass through TRX₁Output signal afterwards is believed relative to the input Number changes in amplitude, phase place change and/or delay.TRX₂……TRX_NThe definition of caused signal characteristic difference is similar to its, Details are not described herein.

Wherein, SCP₁₁、SCP₂₁、SCP_N1Each CP to CP is represented respectively₁Between main connecting line caused by signal characteristic it is poor It is different；Wherein, each CP to CP₁Between main connecting line caused by signal characteristic difference be：Each CP reaches CP₁Between main connecting line institute Changes in amplitude, phase place change and/or the delay of caused signal.

At this time, SCP₁₁=0；SCP₂₁For CP₂To CP₁Between main connecting line caused by signal characteristic difference；SCALA is represented Caused signal characteristic difference during the first calibration multi-channel operation, which is all identical for any first loop , which includes CP₁It is special to the main connecting line between the first calibrated channel, the signal caused by the first calibrated channel Levy the sum of difference, i.e. CP₁To the signal characteristic difference caused by the main connecting line between the first calibrated channel, with the first calibrated channel The sum of caused signal characteristic difference.Wherein, CP₁It is poor to the signal characteristic caused by the main connecting line between the first calibrated channel It is different to be：CP₁To changes in amplitude, phase place change and/or the delay of the signal caused by the main connecting line between the first calibrated channel.The Signal characteristic difference caused by one calibrated channel is：The input signal of first calibrated channel is after the first calibrated channel Export changes in amplitude, phase place change and/or delay of the signal relative to the input signal, i.e. letter caused by the first calibrated channel Number changes in amplitude, phase place change and/or delay.

Wherein, SA₁、SA₂…..SA_NRepresent each raw digital signal and the first loop to raw digital signal processing respectively The feature difference of digital signal afterwards；Such as SA₁Represent TRX₁First loop at place is to the number after raw digital signal processing The feature difference of word signal and raw digital signal；SA₂Represent TRX₂After first loop at place is to raw digital signal processing The feature difference of digital signal and raw digital signal.

For the second loop, processor establishes equation below group two：

SDBF₁+STRX₁+SCP_1N+ SCALB=SB₁

SDBF₂+STRX₂+SCP_2N+ SCALB=SB₂

SDBF_N+STRX_N+SCP_NN+ SCALB=SB_N

Wherein, SDBF₁、SDBF₂…..SDBF_NDefinition and STRX₁、STRX₂……STRX_NDefinition as hereinbefore, Details are not described herein.

Wherein, SCP_1N、SCP_2N、SCP_NNEach CP to CP is represented respectively_NBetween main connecting line caused by signal characteristic it is poor It is different；Wherein, each CP to CP_NBetween main connecting line caused by signal characteristic difference be：Each CP reaches CP_NBetween main connecting line institute Changes in amplitude, phase place change and/or the delay of caused signal.At this time, SCP_NN=0；SCP_1NFor CP₁To CP_NBetween main connection Signal characteristic difference caused by line；SCP_2NFor CP₂To CP_NBetween main connecting line caused by signal characteristic difference；SCALB tables Show signal characteristic difference caused during the second calibration multi-channel operation, which is all phase for any second loop With, which includes CP_NTo the main connecting line between the second calibrated channel, the signal caused by the second calibrated channel The sum of feature difference, i.e. CP_NIt is logical with the second calibration to the signal characteristic difference caused by the main connecting line between the second calibrated channel The sum of signal characteristic difference caused by road.CP_NTo the signal characteristic difference caused by the main connecting line between the second calibrated channel For：CP_NTo changes in amplitude, phase place change and/or the delay of the signal caused by the main connecting line between the second calibrated channel.Second Signal characteristic difference caused by calibrated channel is：The input signal of second calibrated channel is defeated after the second calibrated channel Go out changes in amplitude, phase place change and/or delay of the signal relative to the input signal, i.e. signal caused by the second calibrated channel Changes in amplitude, phase place change and/or delay.

Wherein, SB₁、SB₂…..SB_NRepresent each raw digital signal and the second loop to raw digital signal processing respectively The feature difference of digital signal afterwards；Such as SB₁Represent TRX₁Second loop at place is to the number after raw digital signal processing The feature difference of word signal and raw digital signal；SB₂Represent TRX₂After second loop at place is to raw digital signal processing The feature difference of digital signal and raw digital signal.

Main connecting line 55 connects one end of N number of CP respectively in the embodiment of the present invention, wherein, main connecting line 55 has passive Property：The delay feature of the signal caused by a CP to another CP on the main connecting line 55 of signal is equal to another CP to institute State the delay feature of the signal caused by a CP.According to the passivity, processor is pre-configured with equation below group three：

SCP_1N=SCP_N1-SCP₁₁

SCP_2N=SCP_N1-SCP₂₁

...,

SCP_NN=SCP_N1-SCP_N1

Wherein, SCP₁₁=SCP₂₂…..SCP_NN=0；

And SCP₃₁=SCP₂₁+SCP₃₂

Processor is obtained according to above-mentioned equation group one：

STRX₂-STRX₁=SA₂-SA₁+SCP₁₁-SCP₂₁ (1)

Processor is obtained according to above-mentioned equation group two：

STRX₂-STRX₁=SB₂-SB₁-(SCP_2N-SCP_1N) (2)

Processor is obtained according to above-mentioned equation group three：

SCP_2N-SCP_1N=SCP₁₁-SCP₂₁ (3)

Processor is obtained according to above-mentioned formula (1), (2), (3)：

STRX₂-STRX₁=0.5* (SA₂-SA₁+SB₂-SB₁) (4)

According to similar calculation, processor obtains：

(STRX₃-STRX₁)=0.5* (SA₃+SB₃-SA₁-SB₁), (5)

……

(STRX_N-STRX₁)=0.5* (SA_N+SB_N-SA₁-SB₁) (6)

Since in TRX calibrator (-ter) unit operational process, TRX calibrations are the routine activities to carry out at any time.Because environment (ratio Such as temperature, traffic load, power down) change, all the characteristic of each TRX can be caused to change, therefore the signal caused by each TRX Feature difference can also change, it is necessary to restart calibration, but CP values will not change with environment.So processor can Calibrate to carry out a TRX after electrifying startup and try to achieve CP values, then save each CP values.In this way, later first Calibrated channel damage when, can according to equation group two, try to achieve benchmark TRX caused by signal characteristic difference and remove the benchmark The difference of the signal characteristic difference caused by other TRX beyond TRX, wherein, benchmark TRX can be TRX₁, at this point it is possible to according to Equation group two tries to achieve TRX₂、TRX₃…..TRX_NCaused signal characteristic difference and TRX₁Caused signal characteristic difference Difference.When the second calibrated channel damages, can according to equation group one, try to achieve benchmark TRX caused by signal characteristic difference with removing The difference of the signal characteristic difference caused by other TRX beyond the benchmark TRX, wherein, benchmark TRX can be TRX₁, at this time, TRX can be tried to achieve according to equation group one₂、TRX₃…..TRX_NCaused signal characteristic difference and TRX₁Caused signal is special Levy the difference of difference.

Specifically, processor described below solves the process of CP values：

1) each CP to CP, is sought₁Between main connecting line caused by signal characteristic difference

First equation of equation group one is subtracted each other with second equation, can be obtained：

STRX₂-STRX₁=SA₂-SA₁+SCP₁₁-SCP₂₁

Above-mentioned formula (4) is substituted into the formula, and due to SCP₁₁=0, therefore SCP can be obtained₂₁Value；

Similarly, first equation of equation group one and the 3rd equation are subtracted each other, can obtained：

STRX₃-STRX₁=SA₃-SA₁+SCP₁₁-SCP₃₁

Above-mentioned formula (5) is substituted into the formula, and due to SCP₁₁=0, therefore SCP can be obtained₃₁Value；

Similarly, first equation of equation group one is subtracted each other with last equation, can obtained：

STRX_N-STRX₁=SA_N-SA₁+SCP₁₁-SCP_N1

Above-mentioned formula (6) is substituted into the formula, and due to SCP₁₁=0, therefore SCP can be obtained_N1Value.

2) each CP to CP, is sought_NBetween main connecting line caused by signal characteristic difference

First equation of equation group two is subtracted each other with second equation, can be obtained：

STRX₂-STRX₁=SB₂-SB₁+SCP_2N-SCP_1N

Further according to the first two equation of equation group three, and SCP_1N=SCP_N1, SCP₁₁=0, SCP can be obtained_2N。

Similarly, SCP can be obtained_3N、SCP_4N…..SCP_NN。

As shown in figure 3, TRX calibrator (-ter) units can also be multiple including the first multiplexing demultiplexing device 70 and second in the embodiment With/demultiplexer 80, it is with above-mentioned TRX calibrator (-ter) units difference：

Main connecting line 55, the radiofrequency signal for N number of TRX to be exported are transferred to the first multiplexer 70 and the second multiplexing respectively Device 80；

First multiplexer 70, the first school is sent to specifically for N number of TRX of autonomous connecting line in the future radiofrequency signals exported Quasi- passage 50；

Second multiplexer 80, the second school is sent to specifically for N number of TRX of autonomous connecting line in the future radiofrequency signals exported Quasi- passage 60；

First calibrated channel 50, the radiofrequency signal for being extracted to N number of CP from the first multiplexer 70 are handled, N number of first kind digital signal is obtained, N number of first kind digital signal is sent to processor 10；

Second calibrated channel 60, the radiofrequency signal for being extracted to N number of CP from the second multiplexer 80 are handled, N number of he second-class number word signal is obtained, N number of he second-class number word signal is sent to processor 10.

And the particular content of the represented signal characteristic difference of SCALA and SCALB is different：The signal that SCALA is represented Feature difference includes CP₁To the signal caused by the main connecting line between the first calibrated channel, the first multiplexer, the first calibrated channel The sum of feature difference；The signal characteristic difference that SCALB is represented includes CP_NAnswered to the main connecting line between the second calibrated channel, second With the sum of signal characteristic difference caused by device, the second calibrated channel.

Wherein, in order to close the connection between CP 40, TRX 30, main connecting line, the first calibrated channel, the second calibrated channel System becomes apparent from, and Fig. 4 shows that the connection between CP 40, TRX 30, main connecting line, the first calibrated channel, the second calibrated channel is closed The specific transmission direction of signal when being, and the signal characteristic difference caused by TRX is sought in the embodiment.Wherein, CP 40 includes 4 ends, i.e. first end 41, second end 42, the 3rd end 43 and the 4th end 44, wherein, the first termination TRX, second end 42 connects main connection What equipment line, the 3rd termination aerial array, the 4th end do not take over, and optionally, which can also only include 3 ends, i.e. first end 41st, second end 42, the 3rd end 43.

The embodiment of the present invention is by processor, DBF and the one-to-one TRX of DBF and the one-to-one CP of TRX, main connection Line, the first calibrated channel, processor are linked in sequence to form the first loop；Processor, DBF, with the one-to-one TRX of DBF, with The one-to-one CP of TRX, main connecting line, the second calibrated channel, processor are linked in sequence to form the second loop；Processor is according to hair The difference for penetrating the digital signal received and dispatched on direction on two loops is respectively equal to signal characteristic difference caused by the two loops The sum of, it is not necessary to each CP is measured to the signal characteristic difference caused by the path of calibrated channel, it is possible to determines benchmark TRX institutes The difference of caused signal characteristic difference and the signal characteristic difference caused by other TRX, so as to carry out accurate school to each TRX It is accurate.

Processor 10, for sending raw digital signal to the first calibrated channel 50 and the second calibrated channel 60；Specifically, Can send raw digital signal to the first calibrated channel 50 at the first moment, be sent out at the second moment to the second calibrated channel 60 Raw digital signal is sent, i.e. timesharing sends raw digital signal to the first calibrated channel 50 and the second calibrated channel 60；

First calibrated channel 50, for the raw digital signal from processor to be handled, obtains first kind radio frequency Signal is simultaneously output to the main connecting line 55；Specifically, by the raw digital signal from processor carry out DA conversions, modulation, Upconversion process, obtains first kind radiofrequency signal, and first kind radiofrequency signal is output to the main connecting line 55；

Second calibrated channel 60, for the raw digital signal from processor to be handled, obtains the second class radio frequency Signal output is to the main connecting line 55；Specifically, by the raw digital signal from processor carry out DA conversions, modulation, on Frequency-conversion processing, obtains the second class radiofrequency signal, and the second class radiofrequency signal is output to the main connecting line 55；

Main connecting line 55, for by the first kind radiofrequency signal from the first calibrated channel and from the second calibrated channel Second class radio signal transmission gives N number of CP；

N number of CP 40, is sent respectively to for the first kind radiofrequency signal of autonomous connecting line and the second class radiofrequency signal in the future N number of TRX, i.e. CP₁、CP₂、CP₃、CP_NThe first kind radiofrequency signal of autonomous connecting line and the second class radiofrequency signal difference in the future It is sent to TRX₁、TRX₂、TRX₃、TRX_N。

N number of TRX 30, for handling the first kind radiofrequency signal from N number of CP, output first kind numeral Signal is to N number of DBF；The second class radiofrequency signal from N number of CP is handled, output he second-class number word signal is to N number of DBF；Specifically, each TRX carries out down-converted, demodulation, AD conversion to first kind radiofrequency signal, first kind numeral letter is obtained Number；Down-converted, demodulation, AD conversion are carried out to the second class radiofrequency signal, obtain he second-class number word signal；TRX₁、TRX₂、 TRX₃、TRX₄、TRX_NFirst kind digital signal and he second-class number word signal are sent to DBF respectively₁、DBF₂、DBF₃、DBF_N；

N number of DBF 20, for N number of first kind digital signal from N number of TRX to be sent to the processor, will come from N N number of he second-class number word signal of a TRX is sent to the processor.

Processor 10, for receiving N number of first kind digital signal and N number of he second-class number word signal, subsequent processor 10 is built Vertical equation group one, equation group two, and solve the signal characteristic difference caused by benchmark TRX and its in addition to the benchmark TRX The difference of signal characteristic difference caused by his TRX, and solve each CP to CP₁Between main connecting line caused by signal characteristic it is poor It is different and seek each CP to CP_NBetween main connecting line caused by signal characteristic difference mode and the above-mentioned direction of the launch The process solved in TRX calibration embodiments is identical, and details are not described herein.

It should be noted that：Processor timesharing sends original figure letter to the first calibrated channel 50 and the second calibrated channel 60 Number, also will timesharing receive first kind digital signal and he second-class number word signal, in this way, processor can just distinguish reception Which is digital signal after the first loop processed to digital signal, which is the digital signal after the second loop processed, Cai Nengqu The first digital signal and the second digital signal are separated, to believe by the first digital signal and raw digital signal, by the second numeral Number contrasted with raw digital signal, obtain signal characteristic difference caused by benchmark TRX with addition to the benchmark TRX The difference of signal characteristic difference caused by other TRX.

Wherein, in order to close the connection between CP 40, TRX 30, main connecting line, the first calibrated channel, the second calibrated channel System becomes apparent from, and Fig. 5 shows that the connection between CP 40, TRX 30, main connecting line, the first calibrated channel, the second calibrated channel is closed System, and when the signal characteristic difference caused by TRX is sought in the embodiment signal specific transmission direction, the structure of CP 40 with Fig. 4 is identical, and details are not described herein.

Optionally, the first demultiplexer 70 and the second demultiplexer 80 can also be included, it is different from above-mentioned TRX calibrator (-ter) units Part is：

First calibrated channel 50, for the raw digital signal from processor to be handled, obtains first kind radio frequency Signal is simultaneously output to the first demultiplexer 70；Specifically, by the raw digital signal from processor carry out DA conversions, modulation, Upconversion process, obtains first kind radiofrequency signal, and first kind radiofrequency signal is output to the first demultiplexer 70；

Second calibrated channel 60, for the raw digital signal from processor to be handled, obtains the second class radio frequency Signal output is to the second demultiplexer 80；Specifically, by the raw digital signal from processor carry out DA conversions, modulation, on Frequency-conversion processing, obtains the second class radiofrequency signal, and the second class radiofrequency signal is output to the second demultiplexer 80；

First demultiplexer 70, specifically for exporting first kind radiofrequency signal to main connecting line；

Second demultiplexer 80, specifically for the second class radiofrequency signal is sent output to main connecting line；

Main connecting line 55, for by the first kind radiofrequency signal from the first demultiplexer 70 and from the second demultiplexer 80 the second class radio signal transmission gives N number of CP.

And the particular content of the represented signal characteristic difference of SCALA and SCALB is different：The signal that SCALA is represented Feature difference includes CP₁To the letter caused by the main connecting line between the first calibrated channel, the first demultiplexer, the first calibrated channel The sum of number feature difference；The signal characteristic difference that SCALB is represented includes CP_NTo the main connecting line between the second calibrated channel, second The sum of signal characteristic difference caused by demultiplexer, the second calibrated channel.

In another embodiment：

Processor 10, for sending the first raw digital signal to the first calibrated channel 50, sends out to the second calibrated channel 50 The second raw digital signal is sent, the first raw digital signal and the second raw digital signal are the digital signals of different coding；Tool Body, processor 10 can send the first raw digital signal in synchronization to the first calibrated channel 50, logical to the second calibration Road 50 sends the second raw digital signal, can also send at different moments, does not influence the realization of the present invention.

First calibrated channel 50, for the first raw digital signal from processor 10 to be handled, obtains first Class radiofrequency signal is simultaneously output to the main connecting line 55；

Second calibrated channel 60, for the second raw digital signal from processor to be handled, obtains the second class Radiofrequency signal is output to the main connecting line 55；

Follow-up main connecting line 55, N number of CP 40, N number of TRX 30, N number of DBF 20, the function of processor 10 and foregoing description Identical, details are not described herein.

In this way, since the first raw digital signal and the second raw digital signal are the digital signals of different coding, then A kind of radiofrequency signal and the second class radiofrequency signal are also the signal of different coding, in this way, processor 10 can just distinguish the first number Word signal and the second digital signal, so as to by the first digital signal and the first raw digital signal, by the second digital signal and the Two raw digital signals are contrasted, and obtain signal characteristic difference caused by benchmark TRX and its in addition to the benchmark TRX The difference of signal characteristic difference caused by his TRX.

The embodiment of the present invention is by processor, DBF and the one-to-one TRX of DBF and the one-to-one CP of TRX, main connection Line, the first calibrated channel, processor are linked in sequence to form the first loop；Processor, DBF, with the one-to-one TRX of DBF, with The one-to-one CP of TRX, main connecting line, the second calibrated channel, processor are linked in sequence to form the second loop；Processor is according to connecing The difference for the digital signal received and dispatched on upward two loops of debit is respectively equal to the signal characteristic difference caused by the two loops The sum of, it is not necessary to each CP is measured to the signal characteristic difference caused by the path of calibrated channel, it is possible to determines benchmark TRX institutes The difference of caused signal characteristic difference and the signal characteristic difference caused by other TRX, so as to carry out accurate school to each TRX It is accurate.

Refering to Fig. 6, the embodiment of the present invention provides another kind TRX calibrator (-ter) units, its main distinction with embodiment illustrated in fig. 3 It is, which further includes：Serioparallel exchange module/combining module 90, indoor baseband processing module 40.Serioparallel exchange Interface between module/combining module 90 and indoor baseband processing module 40 is CPRI.Wherein, serioparallel exchange module will come from The signal to be sent of BBU carries out serioparallel exchange, obtains N roads I/Q signal, N roads I/Q signal is separately input in N number of DBF modules；N A DBF modules are sent to corresponding TRX after carrying out feature compensation to N roads I/Q signal；N number of TRX is respectively to received signal DA conversions, modulation, upconversion process are carried out, obtains radiofrequency signal, and export radiofrequency signal to antenna.N number of TRX, which is received, to be come from The radiofrequency signal of antenna, carries out down-converted, demodulation, AD conversion by the radiofrequency signal from antenna, obtains digital signal, will Digital signal is sent to respective DBF；N number of DBF modules carry out N railway digitals signal to be sent to combining module after feature compensation 90；Combining module 90 is sent to indoor baseband processing module 40 after the digital signal from N number of DBF is combined.

In a kind of embodiment, serioparallel exchange module/combining module 90 can be integrated in one with processor 10 In module.

The embodiment of the present invention can ensure after processor controls DBF modules to feature difference compensates caused by TRX Encourage the amplitude, phase, delay feature of every road signal of multiple antennas to have to comply with specific distribution, i.e., formed and conformed in the air The radiation lobe figure asked.

Refering to Fig. 7, the embodiment of the present invention provides another kind TRX calibrator (-ter) units, is with the main distinction of above-described embodiment, A calibrated channel is only needed in the TRX calibrator (-ter) units, which includes：N number of DBF 200, N number of and DBF mono- are a pair of TRX 300, the N number of and one-to-one CP 400 of TRX, calibrated channel 500, the master with first end 551 and second end 552 answered Connecting line 550, processor 100, wherein, one end of N number of CP connects the main connecting line, and the other end connects corresponding TRX, Calibrated channel 500 under the control of a processor, connects the first end 551 or second end 552 of main connecting line 550；Wherein, N number of DBF Including the first DBF (i.e. DBF₁), the 2nd DBF (i.e. DBF₂), the 3rd DBF (i.e. DBF₃), the 4th DBF (i.e. DBF₄) ... N DBF (i.e. DBF_N)；N number of TRX includes the first TRX (i.e. TRX₁), the 2nd TRX (i.e. TRX₂), the 3rd TRX (i.e. TRX₃), the 4th TRX (i.e. TRX₄) ... N TRX (i.e. TRX_N)；N number of CP includes the first CP (i.e. CP₁), the 2nd CP (i.e. CP₂), the 3rd CP (i.e. CP₃), Four CP (i.e. CP₄) ... N CP (i.e. CP_N)。

Wherein, it is processor, DBF, one-to-one with DBF when calibrated channel connects the first end 551 of main connecting line 550 TRX and the one-to-one CP of TRX, main connecting line, calibrated channel, processor are linked in sequence to form the first loop；Work as calibrated channel When connecing the second end 552 of main connecting line 550, processor, DBF and the one-to-one TRX of DBF and the one-to-one CP of TRX, master Connecting line, calibrated channel, processor are linked in sequence to form the second loop；Such as shown in fig. 7, when calibrated channel connects main connection During the first end 551 of line 550, processor 100, DBF₁And the one-to-one TRX of DBF1₁With TRX₁One-to-one CP₁, it is main Connecting line 550, calibrated channel 500, processor 100 are linked in sequence to form the first loop；When calibrated channel connects main connecting line 550 During second end 552, processor 100, DBF₁With DBF₁One-to-one TRX₁With TRX₁One-to-one CP₁, main connecting line 550th, calibrated channel 500, processor 100 are linked in sequence to form the second loop.

Specifically, as shown in fig. 7, the TRX calibrator (-ter) units can also include switch 700, the processor 100 is specifically used for The state of controlling switch 700 so that the first end 551 of the calibrated channel 500 and main connecting line 550 is connected, alternatively, the school The second end 552 of quasi- passage 500 and main connecting line 550 is connected.

In the embodiment, the function of processor is identical with the function of processor in above-mentioned embodiment illustrated in fig. 3, herein no longer Repeat, specifically describe as follows in the signal characteristic difference asked caused by TRX in a transmit direction and recipient is upward The function of other elements when seeking the signal characteristic difference caused by TRX：

During the signal characteristic difference asked caused by TRX in a transmit direction, N number of DBF, for by from each of processor Raw digital signal is sent to corresponding TRX；N number of TRX, it is defeated for handling the raw digital signal from DBF Go out radiofrequency signal；N number of CP, for extracting the radiofrequency signal of N number of TRX outputs；Main connecting line, for passing through the first of main connecting line The radio signal transmission that end or second end extract N number of CP is to calibrated channel；Calibrated channel, for connecing the of main connecting line During one end, N number of CP radiofrequency signals extracted are handled, obtain N number of first kind digital signal, by N number of first kind numeral Signal is sent to processor；When connecing the second end of main connecting line, N number of CP radiofrequency signals extracted are handled, are obtained N number of He second-class number word signal, processor is sent to by N number of he second-class number word signal；Wherein, N number of first kind digital signal is：It is described First loop is to the digital signal after raw digital signal processing；N number of he second-class number word signal is：Second loop pair Digital signal after the raw digital signal processing.

During the signal characteristic difference asked caused by TRX in a receive direction, N number of DBF, for by from each of processor Raw digital signal is sent to corresponding TRX；N number of TRX, it is defeated for handling the raw digital signal from DBF Go out radiofrequency signal；N number of CP, for extracting the radiofrequency signal of N number of TRX outputs；Main connecting line, for passing through the first of main connecting line The radio signal transmission that end or second end extract N number of CP is to calibrated channel；Calibrated channel, for connecing the of main connecting line During one end, N number of CP radiofrequency signals extracted are handled, obtain N number of first kind digital signal, by N number of first kind numeral Signal is sent to processor；When connecing the second end of main connecting line, N number of CP radiofrequency signals extracted are handled, are obtained N number of He second-class number word signal, processor is sent to by N number of he second-class number word signal；Wherein, N number of first kind digital signal is：It is described First loop is to the digital signal after raw digital signal processing；N number of he second-class number word signal is：Second loop pair Digital signal after the raw digital signal processing.

Specifically, as shown in fig. 7, the TRX calibrator (-ter) units can also include multiplexing demultiplexing device 600, multiplex/demultiplex The function of device 600 is similar to the first multiplexing demultiplexing device in above-described embodiment, the function of the second multiplexing demultiplexing device, herein Repeat no more.

The embodiment of the present invention when the first end of calibrated channel connects main connecting line, by processor, DBF, with the DBF one by one Corresponding TRX and the one-to-one CP of the TRX, main connecting line, calibrated channel, processor are linked in sequence to form the first loop； When calibrated channel connects the second end of main connecting line, by processor, DBF and the one-to-one TRX of the DBF and TRX One-to-one CP, calibrated channel, processor are linked in sequence to form the second loop；Processor is received according to oneself on two loops The feature difference of the digital signal of hair is respectively equal to the sum of signal characteristic difference caused by the two loops, it is not necessary to measures Each CP is to the signal characteristic difference caused by the path of calibrated channel, it is possible to determines that the signal characteristic caused by benchmark TRX is poor The difference of the different signal characteristic difference with caused by other TRX, so as to carry out accurate calibration to each TRX.

Refering to Fig. 8, the embodiment of the present invention provides another TRX calibrator (-ter) unit, its main distinction with embodiment illustrated in fig. 7 It is, which further includes：Serioparallel exchange module/combining module 900, indoor baseband processing module 400.Go here and there and turn The interface changed the mold between block/combining module 900 and indoor baseband processing module 400 is CPRI.Wherein, serioparallel exchange module future Serioparallel exchange is carried out from the signal to be sent of BBU, N roads I/Q signal is obtained, N roads I/Q signal is separately input to N number of DBF modules In；N number of DBF modules carry out N roads I/Q signal the corresponding TRX of Fa send Give after feature compensation；N number of TRX is respectively to reception Signal carries out DA conversions, modulation, upconversion process, obtains radiofrequency signal, and export radiofrequency signal to antenna.N number of TRX is received Radiofrequency signal from antenna, carries out down-converted, demodulation, AD conversion by the radiofrequency signal from antenna, obtains digital letter Number, digital signal is sent to respective DBF；N number of DBF modules carry out N railway digitals signal to be sent to conjunction after feature compensation Road module；Hair send baseband processing module 400 in Give rooms after digital signal from N number of DBF is combined by combining module.

In a kind of embodiment, serioparallel exchange module/combining module 900 can be integrated in one with processor 100 In a module.

Refering to Fig. 9, signal characteristic difference condition caused by a kind of TRX of offer of the embodiment of the present invention determines method, this method The TRX calibrator (-ter) units provided using Fig. 3, embodiment illustrated in fig. 4, this method are specifically included：

901st, processor sends raw digital signal.

Specifically, the executive agent of each step can be processor in the embodiment.

902nd, first loop and second loop are received respectively to the numeral after raw digital signal processing Signal.

Wherein, the first loop is corresponded by processor, DBF, with the one-to-one TRX of the DBF, with the TRX CP, main connecting line, the first calibrated channel, processor be linked in sequence what is formed；Second loop be by processor, DBF, with it is described The one-to-one TRX of DBF, be linked in sequence shape with the one-to-one CP of the TRX, main connecting line, the second calibrated channel, processor Into；

Specifically, it can be specifically that processor sends original figure letter to each DBF that raw digital signal is sent in step 901 Number or processor send raw digital signal to the first calibrated channel and the second calibrated channel, received in step 902 First loop is to the first kind digital signal that the digital signal after raw digital signal processing is in above-described embodiment, step The second loop received in 902 is he second-class number in above-described embodiment to the digital signal after raw digital signal processing Word signal, specific raw digital signal in the first loop and the second loop processing procedure referring in above device embodiment Corresponding description, details are not described herein.

903rd, when signal characteristic difference is identical caused by each DBF, according to the first loop to the raw digital signal at The feature difference of digital signal and raw digital signal after reason be equal to the sum of signal characteristic difference caused by the first loop, with And second loop to the raw digital signal processing after digital signal and raw digital signal feature difference be equal to second The sum of signal characteristic difference caused by loop, determine signal characteristic difference caused by benchmark TRX with except the benchmark TRX with The difference of signal characteristic difference caused by other outer TRX, wherein benchmark TRX are any one TRX in N number of TRX.

Specifically, determine the signal characteristic difference caused by benchmark TRX and other TRX institutes in addition to the benchmark TRX The poor process of caused signal characteristic difference is similar to the description of above device embodiment, than repeating no more.

Optionally, since in TRX calibrator (-ter) unit operational process, TRX calibrations are the routine activities to carry out at any time.Because Environmental change can cause the characteristic of each TRX to change, therefore the signal characteristic difference caused by each TRX can also change, Restarting is needed to calibrate, but CP values will not change with environment.So processor can carry out one after electrifying startup Secondary TRX is calibrated and is tried to achieve CP values, then saves each CP values.In this way, later when a calibrated channel damages, Ke Yigen According to the corresponding equation group of another calibrated channel (such as the first calibrated channel damage when, utilize equation group two；Second calibrated channel damages Bad when, utilize equation group one) and the CP values that preserve, determine signal characteristic difference caused by benchmark TRX and remove the benchmark TRX The difference of the signal characteristic difference caused by other TRX in addition.Therefore CP values can be sought in the following way：According to the difference, And the feature difference of first kind digital signal and raw digital signal passes through the first loop institute equal to the raw digital signal The sum of caused signal characteristic difference, determines each CP to CP₁Between main connecting line caused by signal characteristic difference；According to described Difference, and he second-class number word signal and the feature difference of raw digital signal pass through the second loop equal to the raw digital signal The sum of caused signal characteristic difference, determines each CP to CP_NBetween main connecting line caused by signal characteristic difference.Wherein, Specifically determine each CP to CP₁Between main connecting line caused by signal characteristic difference process, and specifically determine each CP arrive CP_NBetween main connecting line caused by signal characteristic difference process it is identical with the accordingly description of above device embodiment, herein Repeat no more.

The feature difference difference for the digital signal that processor is received and dispatched according to oneself on two loops in the embodiment of the present invention Equal to the sum of signal characteristic difference caused by the two loops, it is not necessary to measure caused by each CP to the path of calibrated channel Signal characteristic difference, it is possible to determine signal characteristic difference caused by benchmark TRX and the signal characteristic caused by other TRX The difference of difference, so as to carry out accurate calibration to each TRX.

Refering to Figure 10, the embodiment of the present invention provides another kind signal characteristic difference condition caused by TRX and determines method, the party The TRX calibrator (-ter) units that method is provided using Fig. 7, embodiment illustrated in fig. 8, this method are with above method difference, it is necessary to control Calibrated channel processed connects the first end or second end of main connecting line, and this method specifically includes：

1001st, control calibrated channel connects the first end of main connecting line, sends raw digital signal, receives the original figure Signal passes through the digital signal that first loop returns；Wherein, the first loop connects the first end of main connecting line for calibrated channel When, processor, DBF, with the one-to-one TRX of the DBF, with the one-to-one CP of the TRX, main connecting line, calibrated channel, Processor is linked in sequence what is formed.

1002nd, control calibrated channel connects the second end of main connecting line, sends the raw digital signal, receives described original Digital signal passes through the digital signal that second loop returns；Wherein, the second loop connects the of main connecting line for calibrated channel During two ends, processor, DBF and the one-to-one TRX of the DBF and the one-to-one CP of the TRX, main connecting line, calibration Passage, processor are linked in sequence what is formed.

Specifically, it can be specifically that processor is sent out to each DBF that raw digital signal is sent in step 1001 and step 1002 Send raw digital signal or processor sends raw digital signal, step to the first calibrated channel and the second calibrated channel The first loop received in rapid 1001 is first in above-described embodiment to the digital signal after raw digital signal processing Class digital signal, the second loop received in step 1002 are above-mentioned realities to the digital signal after raw digital signal processing Apply the he second-class number word signal in example, specific raw digital signal in the first loop and the second loop processing procedure referring to upper The corresponding description in device embodiment is stated, details are not described herein.

1003rd, when signal characteristic difference is identical caused by each DBF, according to the first loop to the raw digital signal at The feature difference of digital signal and raw digital signal after reason be equal to the sum of signal characteristic difference caused by the first loop, with And second loop to the raw digital signal processing after digital signal and raw digital signal feature difference be equal to second The sum of signal characteristic difference caused by loop, determine signal characteristic difference caused by benchmark TRX with except the benchmark TRX with The difference of signal characteristic difference caused by other outer TRX, wherein benchmark TRX are any one TRX in N number of TRX.

Optionally, this method further includes：Determine that each CP reaches CP₁Main connecting line caused by signal characteristic difference mistake Journey, and determine that each CP reaches CP_NMain connecting line caused by signal characteristic difference process, concrete implementation mode with it is above-mentioned Implementation in embodiment of the method is identical, and details are not described herein.

Processor control calibrated channel meets CP in the embodiment of the present invention₁Or CP_NTwo loops are formed, according to oneself two The feature difference for the digital signal received and dispatched on a loop is respectively equal to the sum of signal characteristic difference caused by the two loops, no Need to measure each CP to the signal characteristic difference caused by the path of calibrated channel, it is possible to determine caused by benchmark TRX The difference of signal characteristic difference and the signal characteristic difference caused by other TRX, so as to carry out accurate calibration to each TRX.

Can be with one of ordinary skill in the art will appreciate that realizing that all or part of step in above-described embodiment method is Relevant hardware is instructed to complete by program, the program can be stored in a kind of computer-readable recording medium, example Such as read-only storage, disk or CD etc..

Signal characteristic difference condition caused by the TRX calibrator (-ter) units and definite TRX provided above the embodiment of the present invention Method be described in detail, specific case used herein is set forth the principle of the present invention and embodiment, The explanation of above example is only intended to help to understand method and its core concept of the invention；Meanwhile for the one of this area As technical staff, according to the thought of the present invention, there will be changes in specific embodiments and applications, to sum up institute State, this specification content should not be construed as limiting the invention.

Claims

1. a kind of transceiver T RX calibrator (-ter) units, it includes：N number of digital beam forming module DBF, N number of and DBF are corresponded TRX, N number of be more than or equal to 2 with TRX one-to-one coupler CP, N, it is characterised in that：Further include the first calibrated channel With the second calibrated channel, the main connecting line between the first calibrated channel and the second calibrated channel, one end connection institute of N number of CP Main connecting line is stated, the other end connects corresponding TRX, and the TRX calibrator (-ter) units further include processor；

Wherein, processor, DBF, with the one-to-one TRX of the DBF, with the one-to-one CP of the TRX, main connecting line, the One calibrated channel, processor are linked in sequence to form the first loop；Processor, DBF and the one-to-one TRX of the DBF and institute The one-to-one CP of TRX, main connecting line, the second calibrated channel, processor is stated to be linked in sequence to form the second loop；

The processor, for sending raw digital signal to each DBF, receives first loop and second loop respectively Digital signal after the raw digital signal processing sent to processor to each DBF；In signal characteristic difference phase caused by each DBF Meanwhile the digital signal after the raw digital signal processing sent to processor to each DBF according to the first loop and processor to The feature difference for the raw digital signal that each DBF is sent be equal to the sum of signal characteristic difference caused by first loop, with And the digital signal after raw digital signal processing from processor to each DBF that sent to of second loop and processor are to each The feature difference for the raw digital signal that DBF is sent is equal to the sum of signal characteristic difference caused by second loop, determines Signal characteristic difference caused by benchmark TRX and the signal characteristic difference caused by other TRX in addition to the benchmark TRX Difference, wherein benchmark TRX are any one TRX in N number of TRX；

The processor, is additionally operable to the signal characteristic difference according to caused by the definite benchmark TRX with removing the benchmark TRX The difference of the signal characteristic difference caused by other TRX in addition, controls each DBF to carry out signal characteristic difference caused by each TRX Compensation, makes the DBF on each loop identical with the signal characteristic difference caused by TRX.

2. TRX calibrator (-ter) units according to claim 1, it is characterised in that：

N number of DBF, for each raw digital signal from processor to be sent to corresponding TRX；

N number of TRX, for handling the raw digital signal from DBF, exports radiofrequency signal；

N number of CP, for extracting the radiofrequency signal of N number of TRX outputs；

The main connecting line, for the radiofrequency signal of N number of TRX outputs to be transferred to first calibrated channel and institute respectively State the second calibrated channel；

First calibrated channel, for handling the radiofrequency signal for carrying out autonomous connecting line, obtains N number of first kind numeral letter Number, N number of first kind digital signal is sent to processor；

Second calibrated channel, for handling the radiofrequency signal for carrying out autonomous connecting line, obtains N number of he second-class number word letter Number, N number of he second-class number word signal is sent to processor；

Wherein, N number of first kind digital signal is：At the raw digital signal that first loop sends processor to each DBF Digital signal after reason；N number of he second-class number word signal is：The original figure that second loop sends processor to each DBF Digital signal after signal processing.

3. according to claim 1 to 2 any one of them TRX calibrator (-ter) units, it is characterised in that

N number of CP includes the first CP and the 2nd CP；N number of TRX includes the first TRX and the 2nd TRX；

The processor, for establishing equation below group one and equation group two, is made up of group of equations one and equation group two Simultaneous Equations determine the difference of signal characteristic difference caused by the first TRX and the signal characteristic difference caused by the 2nd TRX；

The equation group one includes：

STRX₁+SCP₁₁+ SCALA=SA₁；

STRX₂+SCP₂₁+ SCALA=SA₂；

Wherein, SA₁After the raw digital signal processing that the first loop where representing the first TRX sends processor to the first DBF Digital signal and feature difference from processor to the first DBF raw digital signals sent；SA₂Where representing the 2nd TRX Digital signal after the raw digital signal processing that first loop sends from processor to the 2nd DBF and processor are to the 2nd DBF The feature difference of the raw digital signal of transmission；SCP₁₁=0；SCP₂₁Caused by main connecting line between the 2nd CP to the first CP Signal characteristic difference；SCALA is included caused by the first CP to the main connecting line between the first calibrated channel, the first calibrated channel The sum of signal characteristic difference；

The equation group two includes：

STRX₁+SCP_1N+ SCALB=SB₁；

STRX₂+SCP_2N+ SCALB=SB₂；

Wherein, SB₁After the raw digital signal processing that the second loop where representing the first TRX sends processor to the first DBF Digital signal and feature difference from processor to the first DBF raw digital signals sent；SB₂Where representing the 2nd TRX Digital signal after the raw digital signal processing that second loop sends from processor to the 2nd DBF and processor are to the 2nd DBF The feature difference of the raw digital signal of transmission；SCP_1NIt is poor to the signal characteristic caused by the main connecting line of N CP for the first CP It is different；SCP_2NThe signal characteristic difference caused by main connecting line between the 2nd CP to N CP；SCALB includes N CP to second The sum of signal characteristic difference caused by main connecting line, the second calibrated channel between calibrated channel；

Wherein, STRX₁、STRX₂The signal characteristic difference caused by the first TRX, the 2nd TRX is represented respectively.

4. TRX calibrator (-ter) units according to claim 3, it is characterised in that

The processor, be additionally operable to signal characteristic difference according to caused by the benchmark TRX with addition to the benchmark TRX The difference of signal characteristic difference caused by other TRX, and the first loop where each DBF send processor to each DBF Digital signal after raw digital signal processing is equal to each with processor to the feature difference of each DBF raw digital signals sent The sum of signal characteristic difference caused by the first loop where DBF, determines caused by the main connecting line between each CP to the first CP Signal characteristic difference；And/or the signal characteristic difference according to caused by the benchmark TRX with addition to the benchmark TRX The difference of signal characteristic difference caused by other TRX, and the second loop where each DBF send processor to each DBF Digital signal after raw digital signal processing is equal to each with processor to the feature difference of each DBF raw digital signals sent The sum of signal characteristic difference caused by the second loop where DBF, determines caused by the main connecting line between each CP to N CP Signal characteristic difference.

5. TRX calibrator (-ter) units according to claim 3, it is characterised in that it is multiple that the TRX calibrator (-ter) units further include first With/demultiplexer and the second multiplexing demultiplexing device；

The main connecting line, for the radiofrequency signal of N number of TRX outputs to be transferred to first multiplex/demultiplex respectively Device and second multiplexing demultiplexing device；

First multiplexing demultiplexing device is used to send the radiofrequency signal of N number of TRX outputs from the main connecting line To first calibrated channel；

Second multiplexing demultiplexing device is used to send the radiofrequency signal of N number of TRX outputs from the main connecting line To second calibrated channel；

First calibrated channel, for handling the radiofrequency signal from first multiplexing demultiplexing device, obtains N A first kind digital signal, processor is sent to by N number of first kind digital signal；

Second calibrated channel, for handling the radiofrequency signal from second multiplexing demultiplexing device, obtains N A he second-class number word signal, processor is sent to by N number of he second-class number word signal；

The SCALA includes the first CP to the main connecting line between first calibrated channel, first multiplexing/solution The sum of signal characteristic difference caused by multiplexer, first calibrated channel；

It is logical to the main connecting line between second calibrated channel, second calibration that the SCALB includes the N CP The sum of signal characteristic difference caused by road.

6. TRX calibrator (-ter) units according to claim 1, it is characterised in that the signal characteristic caused by the benchmark TRX is poor Changes in amplitude, phase place change and/or the delay of the different signal caused by the benchmark TRX.

7. TRX calibrator (-ter) units according to claim 1, it is characterised in that the TRX calibrator (-ter) units are base station.