CN102637963A - Indoor distributed antenna system and multiple input multiple output method - Google Patents
Indoor distributed antenna system and multiple input multiple output method Download PDFInfo
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Abstract
The invention provides an indoor distributed antenna system and a multiple input multiple output method, wherein the system comprises a radio frequency signal processing module and a circularly polarized radiation module, wherein the circularly polarized radiation module comprises a first radiation caliber and a second radiation caliber which are the same, are perpendicular to each other, and are respectively connected with the radiation frequency signal processing module; the radiation frequency signal processing module is used for generating a first radio frequency signal and a second radio frequency signal and sending the first radio frequency signal and the second radio frequency signal to the circularly polarized radiation module; the first radio frequency signal and the second radio frequency signal are equal in both amplitude and frequency and are different from each other in phase by 90 degrees; the first radiation caliber receives the first radio frequency signal and sends a first radiation signal; and the second radiation caliber receives the second radio frequency signal and sends a second radiation signal. The indoor distribution antenna system and the multiple input multiple output method provided by the invention can be used for realizing the uniform spatial coverage area of two paths of radiation signals, and realizing an excellent diversity effect.
Description
Technical field
The embodiment of the invention relates to communication technical field, relates in particular to a kind of indoor distributed antenna system and multiple-input multiple-output method.
Background technology
Development along with mobile communication technology; In multiple GSM, used multiple-input and multiple-output (Multiple-Input Multiple-Out-put at present; MIMO) technology is with the elevator system capacity; Such as: Long Term Evolution (Long Term Evolution, LTE) system and WCDMA (Wideband Code Division Multiple Access, WCDMA) system etc.
Because indoor communication service proportion is increasing, therefore using MIMO is very important in indoor GSM.At present; The indoor distributed antenna system of using MIMO mainly is after receiving the radiofrequency signal of two-way constant amplitude equifrequency through perpendicular polarization Radiation Module in the dual polarized antenna and horizontal polarization Radiation Module; Send the radiation signal of two-way quadrature, thereby provide two-way incoherent radiation signal for the portable terminal in the interior space.
But; Because the restriction of dual polarized antenna technology and structural manufacturing process, cause the coverage of two-way radiation signal of horizontal polarization Radiation Module and perpendicular polarization Radiation Module transmission inconsistent, some is overlapping; Some is not overlapping; The signal of lap can only receive a path radiation signal under covering to cause portable terminal in moving process, to be positioned at not, and diversity is relatively poor, and the MIMO effect is not good.
Summary of the invention
To the above-mentioned defective of prior art, the embodiment of the invention provides a kind of indoor distributed antenna system and multiple-input multiple-output method.
One aspect of the present invention provides a kind of indoor distributed antenna system, comprising:
Radiofrequency signal processing module and circular polarization radiation module; Said circular polarization radiation module comprises first radiating aperture and second radiating aperture; Measure-alike and the position of said first radiating aperture and said second radiating aperture is orthogonal, and said radiofrequency signal processing module is connected with said second radiating aperture with said first radiating aperture respectively;
Said radiofrequency signal processing module is used to generate first radiofrequency signal and second radiofrequency signal and sends to said circular polarization radiation module, and said first radiofrequency signal and the said second radiofrequency signal constant amplitude equifrequency and phase difference are 90 degree;
Said circular polarization radiation module is used for receiving said first radiofrequency signal and sending first radiation signal through said first radiating aperture, and receives said second radiofrequency signal and send second radiation signal through said second radiating aperture.
The present invention provides a kind of multiple-input multiple-output method that above-mentioned indoor distributed antenna system carries out of using on the other hand, comprising:
Said radiofrequency signal processing module generates first radiofrequency signal and second radiofrequency signal; Said first radiofrequency signal and the said second radiofrequency signal constant amplitude equifrequency and phase difference are 90 degree, and said first radiofrequency signal and said second radiofrequency signal are sent to said circular polarization radiation module;
Said circular polarization radiation module receives said first radiofrequency signal and sends first radiation signal through said first radiating aperture, and receives said second radiofrequency signal and send second radiation signal through said second radiating aperture.
Indoor distributed antenna system and multiple-input multiple-output method that the embodiment of the invention provides; After the radiofrequency signal that two-way constant amplitude equifrequency that sends through two identical and orthogonal first radiating apertures on the circular polarization radiation module and the second radiating aperture received RF signal processing module and phase difference are 90 degree and send radiation signal; Thereby formed the consistent radiation signal of two-way quadrature and coverage in the space; Can both receive the incoherent radiation signal of two-way when portable terminal is moved in the scope that signal covers, have good diversity.
Description of drawings
Fig. 1 is the structural representation of an embodiment of the indoor distributed antenna system of the present invention;
Fig. 2 is the flow chart of the application multiple-input multiple-output method embodiment one that indoor distributed antenna system carried out shown in Figure 1;
Fig. 3 is the structural representation of indoor another embodiment of distributed antenna system of the present invention;
Fig. 4 is the flow chart of the application multiple-input multiple-output method embodiment two that indoor distributed antenna system carried out shown in Figure 3;
Fig. 5 is the structural representation of the another embodiment of the indoor distributed antenna system of the present invention;
Fig. 6 is the flow chart of the application multiple-input multiple-output method embodiment three that indoor distributed antenna system carried out shown in Figure 5.
Embodiment
Fig. 1 is the structural representation of an embodiment of the indoor distributed antenna system of the present invention, and as shown in Figure 1, this system comprises:
Radiofrequency signal processing module 1 and circular polarization radiation module 2; Circular polarization radiation module 2 comprises first radiating aperture 21 and second radiating aperture 22; Measure-alike and the position of first radiating aperture 21 and second radiating aperture 22 is orthogonal, and radiofrequency signal processing module 1 is connected with second radiating aperture 22 with first radiating aperture 21 respectively;
Wherein, radiofrequency signal processing module 1 is used to generate first radiofrequency signal and second radiofrequency signal and sends to circular polarization radiation module 2, the first radiofrequency signals and the second radiofrequency signal constant amplitude equifrequency and phase difference are 90 degree; Circular polarization radiation module 2 is used for receiving first radiofrequency signal and sending first radiation signal through first radiating aperture 21, and receives second radiofrequency signal and send second radiation signal through second radiating aperture 22.
Fig. 2 is the flow chart of the application multiple-input multiple-output method embodiment one that indoor distributed antenna system carried out shown in Figure 1, and as shown in Figure 2, this method specifically comprises:
The radiofrequency signal processing module generates according to the real needs of indoor GSM using MIMO and meets the two-way radiofrequency signal that MIMO uses required frequency and be respectively first radiofrequency signal and second radiofrequency signal; Wherein, The amplitude of first radiofrequency signal and second radiofrequency signal is identical with frequency, but the different differences of phase place are 90 degree.It is understandable that; Because concrete indoor GSM is different; The required frequency of using MIMO is also different; Illustrate, if the needed frequency of using MIMO is the radiation signal of 2500～2690MHZ in LTE, then first radiofrequency signal of radiofrequency signal processing module generation and the frequency of second radiofrequency signal are 2500～2690MHZ.The radiofrequency signal processing module is that first radiofrequency signal and second radiofrequency signal of 90 degree sends to the circular polarization radiation module with constant amplitude equifrequency and phase difference; Need to prove; Those of ordinary skills can be understood that the radiofrequency signal processing module is that first radiofrequency signal and second radiofrequency signal of 90 degree sends to the circular polarization radiation module through two isometric feeder lines with constant amplitude equifrequency and phase difference; Thereby the transmission path that guarantees first radiofrequency signal and second radiofrequency signal equates that the phase difference of first radiofrequency signal and second radiofrequency signal still is 90 degree when arriving the circular polarization radiation module.
Step 101, the circular polarization radiation module receives first radiofrequency signal and sends first radiation signal through first radiating aperture, and receives second radiofrequency signal and send second radiation signal through second radiating aperture.
Comprise first radiating aperture and second radiating aperture on the circular polarization radiation module, the size and the structural manufacturing process of first radiating aperture and second radiating aperture are identical, and first radiating aperture and second radiating aperture are orthogonal.It should be noted that what one of ordinary skill in the art will appreciate that is that the size of radiating aperture on the circular polarization radiation module is according to the needed frequency of using MIMO in the indoor GSM and concrete the setting.
The circular polarization radiation module receives first radiofrequency signal through first radiating aperture, and receives second radiofrequency signal through second radiating aperture.First radiating aperture sends first radiation signal to the interior space after receiving first radiofrequency signal, second radiating aperture sends second radiation signal to the interior space after receiving second radiofrequency signal.Because first radiofrequency signal and the second radiofrequency signal constant amplitude equifrequency and phase difference are 90 degree; And first radiating aperture is vertical each other with second radiating aperture; Therefore; The electric field intensity of first radiation signal and second radiation signal is spatially orthogonal and have isolation, thereby first radiation signal and second radiation signal have irrelevance.Because the size and the structural manufacturing process of first radiating aperture and second radiating aperture are identical, and are positioned on the same circular polarization radiation module, therefore, the radiation scope of first radiation signal and second radiation signal is spatially in full accord.Thereby in the process that indoor portable terminal moves in signal cover; All the time can receive the incoherent radiation signal of two-way of circular polarization radiation module through first radiating aperture and the second radiating aperture radiation; Can obtain good diversity reception effect, using MIMO to greatest extent in indoor GSM.
Therefore; Compared with prior art; The indoor distributed antenna system that present embodiment provides; Be the radiofrequency signal of 90 degree and send radiation signal through two-way constant amplitude equifrequency and the phase difference that two isometric feeder lines send through two identical and orthogonal first radiating apertures on the circular polarization radiation module and the second radiating aperture received RF signal processing module; Thereby formed the consistent radiation signal of two-way quadrature and coverage in the space, can receive the incoherent radiation signal of two-way all the time when portable terminal is moved in the scope that signal covers, had good diversity reception effect.Simultaneously, owing to only used a circular polarization radiation module promptly to realize the emission of two paths of signals in the indoor distributed antenna system that provides of present embodiment, antenna volume is less, helps laying indoor.
Fig. 3 is the structural representation of indoor another embodiment of distributed antenna system of the present invention; As shown in Figure 3; Based on embodiment illustrated in fig. 1; Radiofrequency signal processing module 1 comprises: remote radio unit (RRU) 11 and phase shifter 12, and remote radio unit (RRU) 11 is connected with phase shifter 12, and phase shifter 12 is connected with second radiating aperture 22 with first radiating aperture 21 respectively;
Wherein, remote radio unit (RRU) 11 is used to generate first radiofrequency signal and second radiofrequency signal of constant amplitude equifrequency, and first radiofrequency signal and second radiofrequency signal are sent to phase shifter 12; Phase shifter 12 is used for first radiofrequency signal and/or second radiofrequency signal are carried out the phase shift processing; The phase difference that makes first radiofrequency signal and second radiofrequency signal is 90 degree; And first radiofrequency signal sent to first radiating aperture 21, second radiofrequency signal is sent to second radiating aperture 22.
Fig. 4 is the flow chart of the application multiple-input multiple-output method embodiment two that indoor distributed antenna system carried out shown in Figure 3, and as shown in Figure 4, this method specifically comprises:
Step 200, remote radio unit (RRU) generates first radiofrequency signal and second radiofrequency signal of constant amplitude equifrequency, and said first radiofrequency signal and second radiofrequency signal are sent to phase shifter;
Remote radio unit (RRU) carries out modulation treatment to the base band light signal that receives; Thereby generate and to meet the two-way radiofrequency signal that MIMO uses required frequency and be respectively first radiofrequency signal and second radiofrequency signal; The amplitude of first radiofrequency signal and second radiofrequency signal is all identical with frequency, and remote radio unit (RRU) sends to phase shifter with first radiofrequency signal and second radiofrequency signal.
Step 201; Phase shifter carries out the phase shift processing to first radiofrequency signal and/or second radiofrequency signal; The phase difference that makes first radiofrequency signal and second radiofrequency signal is 90 degree, and first radiofrequency signal is sent to first radiating aperture, and second radiofrequency signal is sent to second radiating aperture.
After phase shifter receives first radiofrequency signal and second radiofrequency signal; Phase place to first radiofrequency signal and second radiofrequency signal detects, thereby according to the concrete phase place use of first radiofrequency signal and second radiofrequency signal first radiofrequency signal and/or second radiofrequency signal is carried out the phase shift processing.Illustrate; If detect and know that first radiofrequency signal is identical with the phase place of second radiofrequency signal; Then first radiofrequency signal is carried out the phase shift processing of 90 degree; The phase place that makes first radiofrequency signal than the phase place of second radiofrequency signal in advance or quadrature lagging, thereby the phase difference of first radiofrequency signal and second radiofrequency signal is 90 degree.First radiating aperture that first radiofrequency signal after phase shifter is handled phase shift and second radiofrequency signal send to first radiofrequency signal circular polarization radiation module; And second radiofrequency signal sent to second radiating aperture of circular polarization radiation module; Need to prove; Those of ordinary skills can be understood that phase shifter is that first radiofrequency signal and second radiofrequency signal of 90 degree sends to the circular polarization radiation module through two isometric feeder lines with constant amplitude equifrequency and phase difference; Thereby the transmission path that guarantees first radiofrequency signal and second radiofrequency signal equates; When arriving the circular polarization radiation module, the phase difference of first radiofrequency signal and second radiofrequency signal still is 90 degree.
Step 202, the circular polarization radiation module receives first radiofrequency signal and sends first radiation signal through first radiating aperture, receives second radiofrequency signal and sends second radiation signal through second radiating aperture.
The practical implementation process of step 202 can repeat no more referring to the step 101 in the foregoing description here in the present embodiment.
Therefore; Compared with prior art; The indoor distributed antenna system that present embodiment provides; After the radiofrequency signal that remote radio unit (RRU) is generated through phase shifter was carried out phase shift and handled, two identical and orthogonal first radiating apertures and second radiating aperture received two-way constant amplitude equifrequency and the phase difference that phase shifter sends and are the radiofrequency signal of 90 degree and send radiation signal on the circular polarization radiation module, thereby have formed the consistent radiation signal of two-way quadrature and coverage in the space.Owing to used phase shifter in the present embodiment; Therefore can carry out phase shift flexibly to the radiofrequency signal of two-way constant amplitude equifrequency and handle the radiofrequency signal that generates two-way 90 degree phase differences; All the time can receive the incoherent radiation signal of two-way when portable terminal is moved in the scope that signal covers, have good diversity reception effect.
To the indoor distributed antenna system shown in above-mentioned; What one of ordinary skill in the art will appreciate that is that the circular polarization radiation module specifically comprises: microband paste circular polarization radiation module, spiral circle polarized radiation module etc.; With microband paste circular polarization radiation module is typical circular polarization radiation module; Need to prove; Circular polarization radiation module with identical and mutually perpendicular first radiating aperture and second radiating aperture all can be carried out the function of circular polarization radiation module in the embodiment of the invention, and the embodiment of the invention does not limit this.Be elaborated through Fig. 5 concrete processing procedure to microband paste circular polarization radiation module extremely embodiment illustrated in fig. 6 below.
Fig. 5 is the structural representation of the another embodiment of the indoor distributed antenna system of the present invention, and present embodiment is that the concrete processing procedure of microband paste circular polarization radiation module is elaborated to the circular polarization radiation module in embodiment illustrated in fig. 1.As shown in Figure 5; This system comprises: radiofrequency signal processing module 1 and microband paste circular polarization radiation module 3; Microband paste circular polarization radiation module 3 comprises first radiating aperture 31, second radiating aperture 32, the 3rd radiating aperture 33 and the 4th radiating aperture 34; First radiating aperture 31 and the 3rd radiating aperture 33 are parallel to each other; Second radiating aperture 32 and the 4th radiating aperture 34 are parallel to each other, and first radiating aperture 31 is identical orthogonal with second radiating aperture 32, and the 3rd radiating aperture 33 is vertical each other with the 4th radiating aperture 34; Radiofrequency signal processing module 1 comprises: radio frequency controlled processing unit 13, first feeder line 14 and second feeder line 15, and radio frequency controlled processing unit 13 links to each other with first radiating aperture 31 through first feeder line 14, and links to each other with second radiating aperture 32 through second feeder line 15;
Radio frequency controlled processing unit 13 is used to generate first radiofrequency signal and second radiofrequency signal of constant amplitude equifrequency; And control the transmitting time of first radiofrequency signal and second radiofrequency signal according to the length difference of the phase difference of first radiofrequency signal and second radiofrequency signal and first feeder line 14 and second feeder line 15; Pass 15 when being transferred to second radiating aperture 32 so that first radiofrequency signal is transferred to first radiating aperture 31 and second radiofrequency signal through first feeder line 14 through second feeder line, the phase difference of first radiofrequency signal and second radiofrequency signal is 90 degree.
Fig. 6 is the flow chart of the application multiple-input multiple-output method embodiment three that indoor distributed antenna system carried out shown in Figure 5, and as shown in Figure 6, this method specifically comprises:
The radio frequency controlled processing unit generates according to the real needs of indoor GSM using MIMO and meets the two-way radiofrequency signal that MIMO uses required frequency and be respectively first radiofrequency signal and second radiofrequency signal; Wherein, the amplitude of first radiofrequency signal and second radiofrequency signal is identical with frequency.
The radio frequency controlled processing unit detects the phase place of first radiofrequency signal and second radiofrequency signal, thereby obtains the phase difference of first radiofrequency signal and second radiofrequency signal.The radio frequency controlled processing unit detects the length of first feeder line and second feeder line, thereby obtains the length difference of first feeder line and second feeder line.Need to prove that what one of ordinary skill in the art will appreciate that is that the detection mode of radio frequency controlled processing unit correlation frequency signal phase can be accomplished in several ways, and comprises the test of software test and hardware circuit.The radio frequency controlled processing unit can repeat no more through modes such as physical measurement, signal passbacks to the detection mode of feeder line length here.
Because first radiofrequency signal is identical with the frequency of second radiofrequency signal; So the wavelength of first radiofrequency signal and second radiofrequency signal is identical with the propagation cycle; Because first radiofrequency signal is through the transmission of first feeder line, second radiofrequency signal is through the transmission of second feeder line, therefore; The length of first feeder line is the transmission path of first radiofrequency signal, and the length of second feeder line is the transmission path of second radiofrequency signal.The radio frequency controlled processing unit is according to detecting first radiofrequency signal and the phase difference of second radiofrequency signal and the length difference of first feeder line and second feeder line that is obtained; Each phase cycling of reference sine wave is 2 π; If change 90 ° phase place; Be π/4, then the transmission time shifts to an earlier date or hysteresis T/4, and promptly transmission path increases or reduce l/4; The delay inequality of sending first radiofrequency signal and second radiofrequency signal is obtained in calculating; Thereby control the transmitting time of first radiofrequency signal and second radiofrequency signal, so that first radiofrequency signal is when being transferred to first radiating aperture and second radiofrequency signal and being transferred to second radiating aperture through second feeder line through first feeder line, the phase difference of first radiofrequency signal and second radiofrequency signal is 90 degree.
For how clearer explanation radio frequency controlled processing unit obtains the delay inequality of first radiofrequency signal and second radiofrequency signal according to the length difference of the phase difference of first radiofrequency signal and second radiofrequency signal and first feeder line and second feeder line, be that example describes with several kinds of simple application scenarioss.Such as: the radio frequency controlled processing unit is if detection knows that the phase difference of first radiofrequency signal and second radiofrequency signal and the length difference of first feeder line and second feeder line are zero; Explain that the phase place of first radiofrequency signal and second radiofrequency signal is identical and transmission path is identical, the transmission delay difference of then controlling first radiofrequency signal and second radiofrequency signal is 1/4th the odd in the propagation cycle of first radiofrequency signal or second radiofrequency signal.The radio frequency controlled processing unit is zero if detect the phase difference of knowing first radiofrequency signal and second radiofrequency signal; And the length difference of first feeder line and second feeder line is 1/4th a odd of the wavelength of first radiofrequency signal or second radiofrequency signal; Explain that the identical and transmission path of the phase place of first radiofrequency signal and second radiofrequency signal differs the phase difference of 90 degree, then sends first radiofrequency signal and second radiofrequency signal simultaneously.
Comprise four sizes and the identical radiating aperture of structural manufacturing process on the microband paste circular polarization radiation module; And first is parallel with the 3rd radiating aperture; Second is parallel with the 4th radiating aperture, and first and second radiating apertures are orthogonal, and third and fourth radiating aperture is orthogonal.It should be noted that what one of ordinary skill in the art will appreciate that is that the size of radiating aperture on the circular polarization radiation module is according to the needed frequency of using MIMO in the indoor GSM and concrete the setting.
Microband paste circular polarization radiation module receives first radiofrequency signal through first radiating aperture; And receive second radiofrequency signal through second radiating aperture; First radiating aperture sends first radiation signal through the first and the 3rd radiating aperture to the interior space after receiving first radiofrequency signal, second radiating aperture sends second radiation signal through the second and the 4th radiating aperture to the interior space after receiving second radiofrequency signal.Because first radiofrequency signal and the second radiofrequency signal constant amplitude equifrequency and phase difference are 90 degree; And first radiating aperture is vertical each other with second radiating aperture; Therefore; The electric field intensity of first radiation signal and second radiation signal is spatially orthogonal and have isolation, thereby first radiation signal and second radiation signal have irrelevance.Because the size and the structural manufacturing process of four radiating apertures are identical, and are positioned on the same microband paste circular polarization radiation module, therefore, the radiation scope of first radiation signal and second radiation signal is spatially in full accord.Thereby in the process that indoor portable terminal moves in signal cover; All the time can receive the incoherent radiation signal of two-way of microband paste circular polarization radiation module radiation; Can obtain good diversity, using MIMO to greatest extent in indoor GSM.It should be noted that present embodiment also can carry out the function of above-mentioned first radiating aperture and second radiating aperture through orthogonal the 3rd radiating aperture and the 4th radiating aperture, repeat no more here.
Therefore; Compared with prior art; The indoor distributed antenna system that present embodiment provides; Be the radiofrequency signal of 90 degree and send radiation signal through two-way constant amplitude equifrequency and the phase difference that feeder line received RF controlled processing unit sends through two identical and orthogonal first radiating apertures on the microband paste circular polarization radiation module and second radiating aperture; Thereby formed the consistent radiation signal of two-way quadrature and coverage in the space, can receive the incoherent radiation signal of two-way all the time when portable terminal is moved in the scope that signal covers, had good diversity reception effect.Simultaneously, because present embodiment utilizes software control to realize that two-way radiofrequency signal phase difference is 90 degree, can carry out configuration according to actual conditions more flexibly.
One of ordinary skill in the art will appreciate that: all or part of step that realizes said method embodiment can be accomplished through the relevant hardware of program command; Aforesaid program can be stored in the computer read/write memory medium; This program the step that comprises said method embodiment when carrying out; And aforesaid storage medium comprises: various media that can be program code stored such as ROM, RAM, magnetic disc or CD.
What should explain at last is: above embodiment is only in order to explaining technical scheme of the present invention, but not to its restriction; Although with reference to previous embodiment the present invention has been carried out detailed explanation, those of ordinary skill in the art is to be understood that: it still can be made amendment to the technical scheme that aforementioned each embodiment put down in writing, and perhaps part technical characterictic wherein is equal to replacement; And these are revised or replacement, do not make the spirit and the scope of the essence disengaging various embodiments of the present invention technical scheme of relevant art scheme.
Claims (9)
1. an indoor distributed antenna system is characterized in that, comprising:
Radiofrequency signal processing module and circular polarization radiation module; Said circular polarization radiation module comprises first radiating aperture and second radiating aperture; Measure-alike and the position of said first radiating aperture and said second radiating aperture is orthogonal, and said radiofrequency signal processing module is connected with said second radiating aperture with said first radiating aperture respectively;
Said radiofrequency signal processing module is used to generate first radiofrequency signal and second radiofrequency signal and sends to said circular polarization radiation module, and said first radiofrequency signal and the said second radiofrequency signal constant amplitude equifrequency and phase difference are 90 degree;
Said circular polarization radiation module is used for receiving said first radiofrequency signal and sending first radiation signal through said first radiating aperture, and receives said second radiofrequency signal and send second radiation signal through said second radiating aperture.
2. indoor distributed antenna system according to claim 1 is characterized in that, said radiofrequency signal processing module comprises:
Remote radio unit (RRU) and phase shifter, said remote radio unit (RRU) is connected with said phase shifter, and said phase shifter is connected with said second radiating aperture with said first radiating aperture respectively;
Said remote radio unit (RRU) is used to generate first radiofrequency signal and second radiofrequency signal of constant amplitude equifrequency, and said first radiofrequency signal and second radiofrequency signal are sent to said phase shifter;
Said phase shifter is used for said first radiofrequency signal and/or said second radiofrequency signal are carried out the phase shift processing; The phase difference that makes said first radiofrequency signal and said second radiofrequency signal is 90 degree; And said first radiofrequency signal sent to said first radiating aperture, said second radiofrequency signal is sent to said second radiating aperture.
3. indoor distributed antenna system according to claim 1 is characterized in that, said radiofrequency signal processing module comprises:
Radio frequency controlled processing unit, first feeder line and second feeder line;
Said radio frequency controlled processing unit links to each other with said first radiating aperture through said first feeder line, and links to each other with said second radiating aperture through said second feeder line;
Said radio frequency controlled processing unit is used to generate first radiofrequency signal and second radiofrequency signal of constant amplitude equifrequency; And control the transmitting time of said first radiofrequency signal and said second radiofrequency signal according to the length difference of the phase difference of said first radiofrequency signal and said second radiofrequency signal and said first feeder line and said second feeder line; So that said first radiofrequency signal is when being transferred to said first radiating aperture and said second radiofrequency signal and being transferred to said second radiating aperture through said second feeder line through said first feeder line, the phase difference of said first radiofrequency signal and said second radiofrequency signal is 90 degree.
4. according to each described indoor distributed antenna system of claim 1-3, it is characterized in that,
Said circular polarization radiation module is microband paste circular polarization radiation module or spiral circle polarized radiation module.
5. use the multiple-input multiple-output method that indoor distributed antenna system as claimed in claim 1 carries out for one kind, it is characterized in that, comprising:
Said radiofrequency signal processing module generates first radiofrequency signal and second radiofrequency signal; Said first radiofrequency signal and the said second radiofrequency signal constant amplitude equifrequency and phase difference are 90 degree, and said first radiofrequency signal and said second radiofrequency signal are sent to said circular polarization radiation module;
Said circular polarization radiation module receives said first radiofrequency signal and sends first radiation signal through said first radiating aperture, and receives said second radiofrequency signal and send second radiation signal through said second radiating aperture.
6. multiple-input multiple-output method according to claim 5 is characterized in that, said radiofrequency signal processing module comprises: remote radio unit (RRU) and phase shifter,
Said remote radio unit (RRU) generates first radiofrequency signal and second radiofrequency signal of constant amplitude equifrequency, and said first radiofrequency signal and said second radiofrequency signal are sent to said phase shifter;
Said phase shifter carries out the phase shift processing to said first radiofrequency signal and/or said second radiofrequency signal; The phase difference that makes said first radiofrequency signal and said second radiofrequency signal is 90 degree; And said first radiofrequency signal sent to said first radiating aperture, said second radiofrequency signal is sent to said second radiating aperture.
7. multiple-input multiple-output method according to claim 5 is characterized in that, said radiofrequency signal processing module comprises: radio frequency controlled processing unit, first feeder line and second feeder line,
Said radio frequency controlled processing unit generates first radiofrequency signal and second radiofrequency signal of constant amplitude equifrequency;
Said radio frequency controlled processing unit detects the phase difference of said first radiofrequency signal and said second radiofrequency signal and the length difference of said first feeder line and said second feeder line;
Said radio frequency controlled processing unit is controlled the transmitting time of said first radiofrequency signal and said second radiofrequency signal according to said phase difference and said length difference; So that said first radiofrequency signal is when being transferred to said first radiating aperture and said second radiofrequency signal and being transferred to said second radiating aperture through said second feeder line through said first feeder line, the phase difference of said first radiofrequency signal and said second radiofrequency signal is 90 degree.
8. multiple-input multiple-output method according to claim 7 is characterized in that, the transmitting time that said radio frequency controlled processing unit is controlled said first radiofrequency signal and said second radiofrequency signal according to said phase difference and said length difference comprises:
Said radio frequency controlled processing unit is if detect the phase difference know said first radiofrequency signal and said second radiofrequency signal and the length difference of said first feeder line and said second feeder line is zero, and the transmission delay difference of then controlling said first radiofrequency signal and said second radiofrequency signal is 1/4th the odd in the propagation cycle of said first radiofrequency signal or said second radiofrequency signal.
9. multiple-input multiple-output method according to claim 7 is characterized in that, the transmitting time that said radio frequency controlled processing unit is controlled said first radiofrequency signal and said second radiofrequency signal according to said phase difference and said length difference also comprises:
Said radio frequency controlled processing unit is zero if detect the phase difference of knowing said first radiofrequency signal and said second radiofrequency signal; And the length difference of said first feeder line and said second feeder line is 1/4th a odd of the wavelength of said first radiofrequency signal or said second radiofrequency signal, then sends said first radiofrequency signal and said second radiofrequency signal simultaneously.
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| CN110635251A (en) * | 2019-08-21 | 2019-12-31 | 内江喜马雅拉网络技术有限公司 | 2T2R symmetrical antenna system and multi-input multi-output power balancing method |
| CN110649944A (en) * | 2019-08-21 | 2020-01-03 | 内江喜马雅拉网络技术有限公司 | Laminated 1T1R antenna system and single-input multi-output power equalization method |
| CN110661074A (en) * | 2019-08-21 | 2020-01-07 | 成都喜马拉雅电通网络有限公司 | 4T4R symmetrical antenna system and multi-input multi-output power balancing method |
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Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101197465A (en) * | 2006-12-05 | 2008-06-11 | 松下电器产业株式会社 | Antenna apparatus and wireless communication device |
| US20090051618A1 (en) * | 2007-08-22 | 2009-02-26 | Samsung Electronics Co., Ltd. | Multiple input multiple output (mimo) antenna system adaptable for environmental multiplicity |
| CN101635393A (en) * | 2008-07-23 | 2010-01-27 | 公安部第三研究所 | Circularly polarized MIMO antenna system in RFID technical management field |
| CN101641828A (en) * | 2007-03-30 | 2010-02-03 | 松下电器产业株式会社 | Mimo communication device |
| CN201408840Y (en) * | 2009-05-05 | 2010-02-17 | 中兴通讯股份有限公司 | circularly polarized antenna |
| CN101807739A (en) * | 2009-02-13 | 2010-08-18 | 公安部第三研究所 | Miniaturized and circularly polarized antenna for RFID (Radio Frequency Identification) management field |
| CN201601227U (en) * | 2009-12-15 | 2010-10-06 | 西安科技大学 | Indoor MIMO antenna |
| CN101900796A (en) * | 2009-05-26 | 2010-12-01 | Ge医疗系统环球技术有限公司 | Radio frequency body coil and open type magnetic resonance imaging (MRI) system using same |
| CN101997591A (en) * | 2009-08-10 | 2011-03-30 | 雷凌科技股份有限公司 | Wireless transceiver, multi-input multi-output wireless communication system and method |
| CN102055064A (en) * | 2009-10-30 | 2011-05-11 | 雷凌科技股份有限公司 | Circularly polarized antenna in MIMO wireless communication system |
| CN102130382A (en) * | 2010-01-15 | 2011-07-20 | 雷凌科技股份有限公司 | Antenna assembly with adaptive polarization switching function |
| CN102150327A (en) * | 2009-07-10 | 2011-08-10 | 松下电器产业株式会社 | Antenna apparatus and wireless communication apparatus |
| CN102185182A (en) * | 2011-04-09 | 2011-09-14 | 合肥安大电子检测技术有限公司 | Circularly polarized multimode wideband antenna and microstrip power division phase shift network |
-
2012
- 2012-03-28 CN CN201210086676.8A patent/CN102637963B/en active Active
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101197465A (en) * | 2006-12-05 | 2008-06-11 | 松下电器产业株式会社 | Antenna apparatus and wireless communication device |
| CN101641828A (en) * | 2007-03-30 | 2010-02-03 | 松下电器产业株式会社 | Mimo communication device |
| US20090051618A1 (en) * | 2007-08-22 | 2009-02-26 | Samsung Electronics Co., Ltd. | Multiple input multiple output (mimo) antenna system adaptable for environmental multiplicity |
| CN101635393A (en) * | 2008-07-23 | 2010-01-27 | 公安部第三研究所 | Circularly polarized MIMO antenna system in RFID technical management field |
| CN101807739A (en) * | 2009-02-13 | 2010-08-18 | 公安部第三研究所 | Miniaturized and circularly polarized antenna for RFID (Radio Frequency Identification) management field |
| CN201408840Y (en) * | 2009-05-05 | 2010-02-17 | 中兴通讯股份有限公司 | circularly polarized antenna |
| CN101900796A (en) * | 2009-05-26 | 2010-12-01 | Ge医疗系统环球技术有限公司 | Radio frequency body coil and open type magnetic resonance imaging (MRI) system using same |
| CN102150327A (en) * | 2009-07-10 | 2011-08-10 | 松下电器产业株式会社 | Antenna apparatus and wireless communication apparatus |
| CN101997591A (en) * | 2009-08-10 | 2011-03-30 | 雷凌科技股份有限公司 | Wireless transceiver, multi-input multi-output wireless communication system and method |
| CN102055064A (en) * | 2009-10-30 | 2011-05-11 | 雷凌科技股份有限公司 | Circularly polarized antenna in MIMO wireless communication system |
| CN201601227U (en) * | 2009-12-15 | 2010-10-06 | 西安科技大学 | Indoor MIMO antenna |
| CN102130382A (en) * | 2010-01-15 | 2011-07-20 | 雷凌科技股份有限公司 | Antenna assembly with adaptive polarization switching function |
| CN102185182A (en) * | 2011-04-09 | 2011-09-14 | 合肥安大电子检测技术有限公司 | Circularly polarized multimode wideband antenna and microstrip power division phase shift network |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110581367A (en) * | 2019-08-21 | 2019-12-17 | 内江喜马雅拉网络技术有限公司 | 4T6R symmetrical antenna system and multi-input multi-output power balancing method |
| CN110635251A (en) * | 2019-08-21 | 2019-12-31 | 内江喜马雅拉网络技术有限公司 | 2T2R symmetrical antenna system and multi-input multi-output power balancing method |
| CN110649944A (en) * | 2019-08-21 | 2020-01-03 | 内江喜马雅拉网络技术有限公司 | Laminated 1T1R antenna system and single-input multi-output power equalization method |
| CN110661074A (en) * | 2019-08-21 | 2020-01-07 | 成都喜马拉雅电通网络有限公司 | 4T4R symmetrical antenna system and multi-input multi-output power balancing method |
| CN110635251B (en) * | 2019-08-21 | 2021-04-09 | 内江喜马雅拉网络技术有限公司 | 2T2R symmetrical antenna system and multi-input multi-output power balancing method |
| CN110661074B (en) * | 2019-08-21 | 2021-04-13 | 成都喜马拉雅电通网络有限公司 | 4T4R symmetrical antenna system and multi-input multi-output power balancing method |
| CN110649944B (en) * | 2019-08-21 | 2021-11-09 | 内江喜马雅拉网络技术有限公司 | Laminated 1T1R antenna system and single-input multi-output power equalization method |
| CN114142950A (en) * | 2021-11-29 | 2022-03-04 | 南京日月天科技有限公司 | Radio frequency signal amplitude identification method and phase analysis system thereof |
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