CN203574664U - LTE digital double-channel transmission apparatus - Google Patents
LTE digital double-channel transmission apparatus Download PDFInfo
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- CN203574664U CN203574664U CN201320688205.4U CN201320688205U CN203574664U CN 203574664 U CN203574664 U CN 203574664U CN 201320688205 U CN201320688205 U CN 201320688205U CN 203574664 U CN203574664 U CN 203574664U
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Abstract
The utility model relates to an LTE digital double-channel transmission apparatus which is characterized by including a base station, a near-end unit, and a plurality of far-end units, one end of the near-end unit includes two interfaces which are connected with the base station, the other end of the near-end unit includes a plurality of fiber interfaces which are connected with the fiber interfaces of the plurality of far-end units via fibers, and each far-end unit includes a first retransmission antenna and a second retransmission antenna which are used for covering a coverage area with radio remote and amplified signals. According to the LTE digital double-channel transmission apparatus, the combination and the branching of the LTE double-channel signals are carried out by means of digital processing technology, so that the LTE double-channel signals can be transmitted on one fiber, and thereby the fiber resources are saved and the download rate of an LTE double-channel mode is ensured.
Description
Technical field
The utility model relates to wireless communication technology field, especially a kind of LTE numeral binary channels transmission equipment.
Background technology
2G, 3G mobile communication technology is all to adopt SISO(single-input single-output system) technology, it is single channel system, 4G mobile communication technology LTE adopts MIMO(multi-input multi-output system) technology, it is dual channel system, the downloading rate of dual channel system is 2 times of single channel system, and traditional radio-frequency (RF) transmission system is single pass, realize binary channels transmission and need two two optical fiber of complete equipment, very large waste is all caused in the installation site of equipment and fiber resource, difficulty of construction is larger, a kind of LTE numeral binary channels transmission method and equipment that the present invention proposes, utilize digital processing technology to close road and shunt to LTE two-way signal, LTE double-channel signal is transmitted on an optical fiber, saved fiber resource, and guaranteed the downloading rate of LTE dual channel mode.
Utility model content
In view of this, the purpose of this utility model is to provide a kind of LTE numeral binary channels transmission equipment, and LTE double-channel signal is transmitted on an optical fiber, has saved fiber resource, and has guaranteed the downloading rate of LTE dual channel mode.
The utility model adopts following scheme to realize: a kind of LTE numeral binary channels transmission equipment, it is characterized in that: comprise a base station, a near-end unit and a plurality of far-end unit, one end of described near-end unit comprises two interfaces and is connected with described base station respectively, the other end of described near-end unit comprises a plurality of optical fiber interfaces, and be connected with the optical fiber interface of described a plurality of far-end units by optical fiber, described far-end unit comprises one first retransmitting antenna and one second retransmitting antenna, in order to the radiofrequency signal zooming out after amplification is covered the area of coverage.
In the utility model one embodiment, described near-end unit comprises a first duplexer, one second duplexer, one first near-end up/down frequency converter, one second near-end up/down frequency converter, a near-end two-channel digital ifd module and a digital light module; Two-way communication between two-way communication between described first duplexer, the first near-end up/down frequency converter and near-end two-channel digital ifd module and the second duplexer, the second near-end up/down frequency converter and near-end two-channel digital ifd module forms binary channels up link and down link; Described near-end two-channel digital ifd module is connected with described digital light module, the optical fiber interface that the output of described digital light module is connected with described far-end unit as described near-end unit.
In the utility model one embodiment, described near-end two-channel digital ifd module comprises one modulus/D/A converting circuit and a baseband processing circuitry, and the two-way communication between described modulus/D/A converting circuit and baseband processing circuitry forms binary channels up link and down link.
In the utility model one embodiment, described far-end unit comprises a far-end two-channel digital ifd module, one first far-end up/down frequency converter, the second far-end up/down frequency converter, one first power amplifier low noise integrated module, the second power amplifier low noise integrated module, one the 3rd duplexer, one the 4th duplexer and a digital light module; The two-way communication of the two-way communication of described far-end two-channel digital ifd module, the first far-end up/down frequency converter, the first power amplifier low noise integrated module, the 3rd duplexer and the first retransmitting antenna and described far-end two-channel digital ifd module, the second far-end up/down frequency converter, the second power amplifier low noise integrated module, the 4th duplexer and the second retransmitting antenna forms binary channels up link and down link; Described far-end two-channel digital ifd module is connected with described digital light module, the optical fiber interface that the output of described digital light module is connected with described near-end unit as described far-end unit.
In the utility model one embodiment, described far-end two-channel digital ifd module comprises a baseband processing circuitry and one digital-to-analogue/analog to digital conversion circuit; Two-way communication between described baseband processing circuitry and digital-to-analogue/analog to digital conversion circuit forms binary channels up link and down link.
In the utility model one embodiment, a base station zoom out system equivalent substitution for described base station.
In the utility model one embodiment, described base station is LTE binary channels base station.
In the utility model one embodiment, described far-end unit also comprises another optical fiber interface, in order to be connected with other far-end units.
A kind of LTE numeral binary channels transmission equipment proposed by the invention, utilize digital processing technology to close road and shunt to LTE two-way signal, LTE double-channel signal is transmitted on an optical fiber, saved fiber resource, and guaranteed the downloading rate of LTE dual channel mode, have that equipment volume is little, stable performance, little to web influence, the features such as simple, easy construction, networking capability be strong are installed.
For making the purpose of this utility model, technical scheme and advantage clearer, below will, by specific embodiment and relevant drawings, the utility model be described in further detail.
Accompanying drawing explanation
Fig. 1 is system architecture diagram of the present utility model.
Fig. 2 is near-end of the present utility model unit principle framework figure.
Fig. 3 is far-end unit principle framework figure of the present utility model.
Fig. 4 is near-end of the present utility model unit and far-end unit catenation principle frame diagram.
Embodiment
As shown in Figure 1, the utility model provides a kind of LTE numeral binary channels transmission equipment, comprise a base station, one near-end unit and a plurality of far-end unit are (as the far-end unit 11 in Fig. 1, far-end unit 12 ... far-end unit 41, far-end unit 42 etc.), one end of described near-end unit comprises two interfaces and is connected with described base station respectively, the other end of described near-end unit comprises a plurality of optical fiber interfaces, and be connected with the optical fiber interface of described a plurality of far-end units by optical fiber, described far-end unit comprises one first retransmitting antenna and one second retransmitting antenna, in order to the radiofrequency signal zooming out after amplification is covered the area of coverage.
Preferably, described base station can be with a base station zoom out system equivalent substitution; Described base station is LTE binary channels base station, and now base station zoom out system synchronously changes to LTE binary channels base station zoom out system; Described far-end unit also comprises another optical fiber interface, in order to being connected with other far-end units (in Fig. 1, being connected between far-end unit 11 and far-end unit 12).
As shown in Figure 2, described near-end unit comprises a first duplexer, one second duplexer, one first near-end up/down frequency converter, one second near-end up/down frequency converter, a near-end two-channel digital ifd module and a digital light module; Two-way communication between two-way communication between described first duplexer, the first near-end up/down frequency converter and near-end two-channel digital ifd module and the second duplexer, the second near-end up/down frequency converter and near-end two-channel digital ifd module forms binary channels up link and down link; Described near-end two-channel digital ifd module is connected with described digital light module, the optical fiber interface that the output of described digital light module is connected with described far-end unit as described near-end unit.
Continue referring to Fig. 2, described near-end two-channel digital ifd module comprises one modulus/D/A converting circuit (ADC/DAC) and a baseband processing circuitry, and the two-way communication between described modulus/D/A converting circuit and baseband processing circuitry forms binary channels up link and down link.
As shown in Figure 3, described far-end unit comprises a far-end two-channel digital ifd module, one first far-end up/down frequency converter, the second far-end up/down frequency converter, one first power amplifier low noise integrated module, the second power amplifier low noise integrated module, one the 3rd duplexer, one the 4th duplexer and a digital light module; The two-way communication of the two-way communication of described far-end two-channel digital ifd module, the first far-end up/down frequency converter, the first power amplifier low noise integrated module, the 3rd duplexer and the first retransmitting antenna and described far-end two-channel digital ifd module, the second far-end up/down frequency converter, the second power amplifier low noise integrated module, the 4th duplexer and the second retransmitting antenna forms binary channels up link and down link; Described far-end two-channel digital ifd module is connected with described digital light module, the optical fiber interface that the output of described digital light module is connected with described near-end unit as described far-end unit.
Continue referring to Fig. 3, described far-end two-channel digital ifd module comprises a baseband processing circuitry and one digital-to-analogue/analog to digital conversion circuit (DAC/ADC); Two-way communication between described baseband processing circuitry and digital-to-analogue/analog to digital conversion circuit forms binary channels up link and down link.
Below in conjunction with hardware configuration of the present utility model and accompanying drawing, the operation principle of the utility model unit is described:
As shown in Figure 2, near-end unit is from base station (or base station zoom out system) coupling LTE two-way downlink radio-frequency signal, through first duplexer and the second duplexer, enter the first near-end up/down frequency converter and the second near-end up/down frequency converter respectively, through lower frequency changer circuit 1(in the first near-end up/down frequency converter) and lower frequency changer circuit 2(in the second near-end up/down frequency converter) enter the modulus/D/A converting circuit (ADC/DAC) of near-end two-channel digital ifd module after being down-converted to 85MHz and 93MHz intermediate-freuqncy signal, after being converted to digital signal, 85MHz and 93MHz intermediate-freuqncy signal enter baseband processing circuitry, it is light signal by digital light module converts that baseband processing circuitry closes road two-way LTE digital signal, through Optical Fiber Transmission, arrive far-end unit, from far-end unit, pass the uplink optical signal of coming, through digital light module converts, it is the baseband processing circuitry that digital signal enters near-end two-channel digital ifd module, baseband processing circuitry is digital demodulation signal and be decomposed into two-way LTE digital signal, after being converted to analog signal, modulus/D/A converting circuit (ADC/DAC) enters respectively the first near-end up/down frequency converter and the second near-end up/down frequency converter, after up-converter circuit upconverts to LTE upward signal, enter first duplexer and the second duplexer, get back to base station (or base station zoom out system) interface.
As shown in Figure 3, far-end unit receives the light signal that near-end unit transmits, through digital light module converts, it is the baseband processing circuitry that digital signal enters far-end two-channel digital ifd module, baseband processing circuitry is digital demodulation signal and be decomposed into the descending digital signal of two-way LTE, after being converted to analog signal, digital-to-analogue/analog to digital conversion circuit (DAC/ADC) enters respectively the first far-end up/down frequency converter and the second far-end up/down frequency converter, through up-converter circuit, upconvert to LTE downstream signal and enter the first power amplifier low noise integrated module and the second power amplifier low noise integrated module, through descending power amplifying circuit by entering the 3rd duplexer and the 4th duplexer, through the first retransmitting antenna and the second retransmitting antenna, the area of coverage is covered, the first retransmitting antenna and the second retransmitting antenna receive LTE two-way upward signal, through the 3rd duplexer and the 4th duplexer, enter the first power amplifier low noise integrated module and the second power amplifier low noise integrated module, through up low noise amplifier circuit, be amplified into the first far-end up/down frequency converter and the second far-end up/down frequency converter, after being down-converted to 88MHz and 96MHz intermediate-freuqncy signal, lower frequency changer circuit enters the digital-to-analogue/analog to digital conversion circuit (DAC/ADC) of far-end two-channel digital ifd module, 88MHz and 96MHz intermediate-freuqncy signal are converted to digital signal and enter baseband processing circuitry, it is light signal by digital light module converts that baseband processing circuitry closes road two-way LTE digital signal, through Optical Fiber Transmission, arrive near-end unit.
Below in conjunction with hardware configuration of the present utility model and accompanying drawing, an embodiment of the utility model total system is described:
As shown in Figure 4, down link is: near-end unit is from base station (or base station zoom out system) coupling LTE two-way downlink radio-frequency signal, through first duplexer and the second duplexer, enter the first near-end up/down frequency converter and the second near-end up/down frequency converter respectively, through lower frequency changer circuit 1(in the first near-end up/down frequency converter) and lower frequency changer circuit 2(in the second near-end up/down frequency converter) enter the modulus/D/A converting circuit (ADC/DAC) of near-end two-channel digital ifd module after being down-converted to 85MHz and 93MHz intermediate-freuqncy signal, after being converted to digital signal, 85MHz and 93MHz intermediate-freuqncy signal enter baseband processing circuitry, it is light signal by digital light module converts that baseband processing circuitry closes road two-way LTE digital signal, through Optical Fiber Transmission, arrive far-end unit, far-end unit receives the light signal that near-end unit transmits, through digital light module converts, it is the baseband processing circuitry that digital signal enters far-end two-channel digital ifd module, baseband processing circuitry is digital demodulation signal and be decomposed into the descending digital signal of two-way LTE, after being converted to analog signal, digital-to-analogue/analog to digital conversion circuit (DAC/ADC) enters respectively the first far-end up/down frequency converter and the second far-end up/down frequency converter, through up-converter circuit, upconvert to LTE downstream signal and enter the first power amplifier low noise integrated module and the second power amplifier low noise integrated module, through descending power amplifying circuit by entering the 3rd duplexer and the 4th duplexer, through the first retransmitting antenna and the second retransmitting antenna, the area of coverage is covered.
Up link is: the first retransmitting antenna and the second retransmitting antenna receive LTE two-way upward signal, through the 3rd duplexer and the 4th duplexer, enter the first power amplifier low noise integrated module and the second power amplifier low noise integrated module, through up low noise amplifier circuit, be amplified into the first far-end up/down frequency converter and the second far-end up/down frequency converter, after being down-converted to 88MHz and 96MHz intermediate-freuqncy signal, lower frequency changer circuit enters the digital-to-analogue/analog to digital conversion circuit (DAC/ADC) of far-end two-channel digital ifd module, 88MHz and 96MHz intermediate-freuqncy signal are converted to digital signal and enter baseband processing circuitry, it is light signal by digital light module converts that baseband processing circuitry closes road two-way LTE digital signal, through Optical Fiber Transmission, arrive near-end unit, from far-end unit, pass the uplink optical signal of coming, through digital light module converts, it is the baseband processing circuitry that digital signal enters near-end two-channel digital ifd module, baseband processing circuitry is digital demodulation signal and be decomposed into two-way LTE digital signal, after being converted to analog signal, modulus/D/A converting circuit (ADC/DAC) enters respectively the first near-end up/down frequency converter and the second near-end up/down frequency converter, after up-converter circuit upconverts to LTE upward signal, enter first duplexer and the second duplexer, get back to base station (or base station zoom out system) interface.
Above-listed preferred embodiment; the purpose of this utility model, technical scheme and advantage are further described; institute is understood that; the foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection range of the present utility model.
Claims (8)
1. LTE numeral binary channels transmission equipment, it is characterized in that: comprise a base station, a near-end unit and a plurality of far-end unit, one end of described near-end unit comprises two interfaces and is connected with described base station respectively, the other end of described near-end unit comprises a plurality of optical fiber interfaces, and be connected with the optical fiber interface of described a plurality of far-end units by optical fiber, described far-end unit comprises one first retransmitting antenna and one second retransmitting antenna, in order to the radiofrequency signal zooming out after amplification is covered the area of coverage.
2. a kind of LTE numeral binary channels transmission equipment according to claim 1, is characterized in that: described near-end unit comprises a first duplexer, one second duplexer, one first near-end up/down frequency converter, one second near-end up/down frequency converter, a near-end two-channel digital ifd module and a digital light module; Two-way communication between two-way communication between described first duplexer, the first near-end up/down frequency converter and near-end two-channel digital ifd module and the second duplexer, the second near-end up/down frequency converter and near-end two-channel digital ifd module forms binary channels up link and down link; Described near-end two-channel digital ifd module is connected with described digital light module, the optical fiber interface that the output of described digital light module is connected with described far-end unit as described near-end unit.
3. a kind of LTE numeral binary channels transmission equipment according to claim 2, it is characterized in that: described near-end two-channel digital ifd module comprises one modulus/D/A converting circuit and a baseband processing circuitry, the two-way communication between described modulus/D/A converting circuit and baseband processing circuitry forms binary channels up link and down link.
4. a kind of LTE numeral binary channels transmission equipment according to claim 1, is characterized in that: described far-end unit comprises a far-end two-channel digital ifd module, one first far-end up/down frequency converter, the second far-end up/down frequency converter, one first power amplifier low noise integrated module, the second power amplifier low noise integrated module, one the 3rd duplexer, one the 4th duplexer and a digital light module; The two-way communication of the two-way communication of described far-end two-channel digital ifd module, the first far-end up/down frequency converter, the first power amplifier low noise integrated module, the 3rd duplexer and the first retransmitting antenna and described far-end two-channel digital ifd module, the second far-end up/down frequency converter, the second power amplifier low noise integrated module, the 4th duplexer and the second retransmitting antenna forms binary channels up link and down link; Described far-end two-channel digital ifd module is connected with described digital light module, the optical fiber interface that the output of described digital light module is connected with described near-end unit as described far-end unit.
5. a kind of LTE numeral binary channels transmission equipment according to claim 1, is characterized in that: described far-end two-channel digital ifd module comprises a baseband processing circuitry and one digital-to-analogue/analog to digital conversion circuit; Two-way communication between described baseband processing circuitry and digital-to-analogue/analog to digital conversion circuit forms binary channels up link and down link.
6. a kind of LTE numeral binary channels transmission equipment according to claim 1, is characterized in that: a base station zoom out system equivalent substitution for described base station.
7. a kind of LTE numeral binary channels transmission equipment according to claim 1, is characterized in that: described base station is LTE binary channels base station.
8. a kind of LTE numeral binary channels transmission equipment according to claim 1, is characterized in that: described far-end unit also comprises another optical fiber interface, in order to be connected with other far-end units.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201320688205.4U CN203574664U (en) | 2013-11-04 | 2013-11-04 | LTE digital double-channel transmission apparatus |
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| CN201320688205.4U CN203574664U (en) | 2013-11-04 | 2013-11-04 | LTE digital double-channel transmission apparatus |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104065413A (en) * | 2014-07-10 | 2014-09-24 | 中邮科通信技术股份有限公司 | Digital multi-medium transmission to-the-home covering system |
| CN104393924A (en) * | 2014-12-16 | 2015-03-04 | 福建师范大学 | LTE (Long Term Evolution) two-channel digital optical fiber remote home-entry coverage system |
| CN104486771A (en) * | 2014-12-16 | 2015-04-01 | 福建师范大学 | Remote home-entry covering method for LTE dual-channel digital optical fiber |
| CN106130851A (en) * | 2016-08-29 | 2016-11-16 | 中邮科通信技术股份有限公司 | A kind of LTE digital two-channel multimedium is registered one's residence covering system |
-
2013
- 2013-11-04 CN CN201320688205.4U patent/CN203574664U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104065413A (en) * | 2014-07-10 | 2014-09-24 | 中邮科通信技术股份有限公司 | Digital multi-medium transmission to-the-home covering system |
| CN104393924A (en) * | 2014-12-16 | 2015-03-04 | 福建师范大学 | LTE (Long Term Evolution) two-channel digital optical fiber remote home-entry coverage system |
| CN104486771A (en) * | 2014-12-16 | 2015-04-01 | 福建师范大学 | Remote home-entry covering method for LTE dual-channel digital optical fiber |
| CN104393924B (en) * | 2014-12-16 | 2017-11-10 | 福建师范大学 | A kind of LTE two-channel digitals fiber optic stretch is registered one's residence covering system |
| CN104486771B (en) * | 2014-12-16 | 2017-12-08 | 福建师范大学 | A kind of LTE two-channel digitals fiber optic stretch is registered one's residence covering method |
| CN106130851A (en) * | 2016-08-29 | 2016-11-16 | 中邮科通信技术股份有限公司 | A kind of LTE digital two-channel multimedium is registered one's residence covering system |
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Granted publication date: 20140430 |