CN105680950B - A kind of five moulds, seven ten channel intelligent digital optical fiber indoor distributed systems of frequency - Google Patents
A kind of five moulds, seven ten channel intelligent digital optical fiber indoor distributed systems of frequency Download PDFInfo
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- CN105680950B CN105680950B CN201610055760.1A CN201610055760A CN105680950B CN 105680950 B CN105680950 B CN 105680950B CN 201610055760 A CN201610055760 A CN 201610055760A CN 105680950 B CN105680950 B CN 105680950B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/25—Arrangements specific to fibre transmission
- H04B10/2575—Radio-over-fibre, e.g. radio frequency signal modulated onto an optical carrier
- H04B10/25752—Optical arrangements for wireless networks
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/25—Arrangements specific to fibre transmission
- H04B10/2581—Multimode transmission
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
- H04W16/18—Network planning tools
- H04W16/20—Network planning tools for indoor coverage or short range network deployment
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Abstract
The present invention provide a kind of five kinds of standards of support simultaneously, seven kinds of frequencies, ten channels digital fiber indoor distributed system.The invention includes access unit, expanding element, radio frequency unit.Access unit duplexer containing the Multi-standard multi-band/filter, Multi-standard multi-band radio-frequency front-end, clock module, debugging mouth, network monitoring mouth, FPGA1, CPU mini system, power supply module, 7 SFP main light ports, 1 SFP is from optical port.The expanding element contains clock module, and debugging mouth, FPGA2, CPU mini system, power supply module, 1 SFP is from optical port, 9 SFP main light ports.Radio frequency unit multiplexer containing the Multi-standard multi-band/filter, Multi-standard multi-band power amplifier/low noise, Multi-standard multi-band radio-frequency front-end, clock module, debugging mouth, FPGA3, CPU mini system, power supply module, SFP is from optical port.The present invention has while realizing the advantages that cell splitting Diffuse Dimension model is realized in the signal all standing of multiple mobile operator multi-standards, access unit cascade, and configuration is flexible, and difficulty of construction is small.
Description
Technical field:
The present invention relates to a kind of five moulds, seven ten channel intelligent digital optical fiber indoor distributed systems of frequency.The system is based on digital light
Fibre transmission, while support the second generation (GSM, DCS, CDMA1x), the third generation (WCDMA, CDMA-EVDO), forth generation (FDD-LTE,
TDD-LTE) mobile communication technology, and work at the same time in 800MHz, 900MHz, 1800MHz, 2100MHz and 2300MHz frequency range
On.
Background technique:
Mobile communication field has gone through the first generation (simulation), the second generation (GSM, CDMA1x), the third generation at present
(WCDMA, CDMA-EVDO, TD-SCDMA) is stepping into forth generation (FDDLTE, TDLTE).We use 1G, 2G, 3G, 4G below
To state the first generation, the second generation, the third generation, fourth generation mobile communication technology.Wherein 1G has been eliminated, but 2G, 3G, 4G will
Meeting Long Coexistence, 3 big mobile communication carriers actually need while O&M GSM, CDMA2000, TD-SCDMA, WCDMA, TD-
A variety of wireless communication networks standards such as LTE, LTE FDD, each wireless communication system work respectively 800MHz, 900MHz,
In multiple common wireless communication frequency ranges such as 1800MHz, 2100MHz, 2300MHz.
With development of new techniques, wireless network application environment is more complicated, and an operator possesses multiple standards, multistage frequency
The case where rate, area of coverage multisystem, Multi net voting, a full frequency band coexist, is also more and more.In some occasions, such as intensive building
Or large stadium etc., it is difficult by outdoor different systems different frequency macro base station to the effective signal covering of indoor carry out.This
When just need to lay multimode multi-frequency section indoor distributed system.Existing indoor distributed system can be divided into two classes in the market, a kind of
It is the modeling scheme for using combiner, coupler, power splitter, this scheme feeder line cost is too high, owner's difficult coordination, nets interior dry
It disturbs big.Another kind of is low-speed digital scheme, and this kind of scheme can only support two kinds of 2G, 3G systems since the technology of use is relatively outmoded
Formula, and multiple band operations cannot be supported simultaneously.
Summary of the invention:
The technical problem to be solved in the present invention is the provision of a kind of interior point of five moulds, seven ten channel intelligent digital fiber chambers of frequency
Distribution system, using a set of hardware device realize five kinds of standards of GSM, CDMA2000, WCDMA, TD-LTE and FDD-LTE under, seven kinds
The remote transmission and covering of the multi-carrier mobile communication signal of working frequency range.It is increased for mobile communication system a kind of flexible
, the new technique means that the radiofrequency signal of Larger Dynamic range and large capacity is transmitted and covered at a distance, effectively reduce construction
Difficulty and cost.
The present invention is implemented as follows:
Five mould of one kind of the invention, seven ten channel intelligent digital optical fiber indoor distributed systems of frequency include three kinds of units: access is single
Member, expanding element and radio frequency unit.The access unit is connected with expanding element, can also be cascaded with newly-increased access unit and be realized load
Wavefront splitting Diffuse Dimension model, expanding element can also reconnect expanding element with connection radio frequency unit.The unit is mutual
It is connected by optical fiber.
The access unit includes: 850 frequency range duplexer of CDMA/filter, 850 frequency range radio-frequency front-end of CDMA, GSM
900 frequency range duplexers/filter, 900 frequency range radio-frequency front-end of GSM, 1800 frequency range duplexer of GSM/filter, 1800 frequency of GSM
Section radio-frequency front-end, 2100 frequency range duplexer of WCDMA/filter, 2100 radio-frequency front-end of WCDMA, 2300 frequency range of TDD-LTE are double
Work device/filter, 2300 frequency range radio-frequency front-end of TDD-LTE, 1800 frequency range duplexer of FDD-LTE/filter, FDD-LTE
1800 frequency range radio-frequency front-ends, 2100 frequency range duplexer of FDD-LTE/filter, 2100 frequency range radio-frequency front-end of FDD-LTE, clock
Module, RJ45 debugging serial interface, RJ45 network monitoring network interface, FPGA1, CPU mini system, power supply module, 7 SFP main light ports, 1
SFP is from optical port.850 frequency range duplexer of the CDMA/filter is connected to 850 frequency range radio-frequency front-end of CDMA, is connected to institute
State FPGA1.900 frequency range duplexer of the GSM/filter is connected to 900 frequency range radio-frequency front-end of GSM, is connected to FPGA1.
1800 frequency range duplexer of the GSM/filter is connected to 1800 frequency range radio-frequency front-end of GSM, is connected to FPGA1.It is described
2100 frequency range duplexer of WCDMA/filter is connected to WCDMA2100 radio-frequency front-end, is connected to FPGA1.The TDD-LTE
2300 frequency range duplexers/filter is connected to 2300 frequency range radio-frequency front-end of TDD-LTE, is connected to FPGA1.The FDD-LTE
1800 frequency range duplexers/filter is connected to 1800 frequency range radio-frequency front-end of FDD-LTE, is connected to FPGA1.The FDD-
LTE2100 frequency range duplexer/filter is connected to 2100 frequency range radio-frequency front-end of FDD-LTE, is connected to FPGA1.The RJ45
Debugging serial interface is connected to FPGA1.The RJ45 network monitoring network interface connection is to FPGA1.The CPU mini system is connected to FPGA1.
7 SFP main light ports are all connected to FPGA1.1 SFP is all connected to FPGA1 from optical port.The clock module is to each
Radio-frequency front-end and FPGA1 provide local clock.The power module is powered to each part mentioned above.
The expanding element includes: clock module, RJ45 network interface, FPGA2, CPU mini system, power supply module, 1 SFP from
Optical port, 9 SFP main light ports.The RJ45 network interface connection is to FPGA2.The CPU mini system is connected to FPGA2.1 SFP
FPGA2 is all connected to from optical port and 9 SFP main light ports.The clock module provides local clock to FPGA2.The power supply mould
Block is powered to each part mentioned above.
The radio frequency unit includes: 850 frequency range duplexer of CDMA/filter, 850 frequency range power amplifier of CDMA/low noise,
850 frequency range radio-frequency front-end of CDMA, 900 frequency range duplexer of GSM/filter, 900 frequency range power amplifier of GSM/low noise, GSM 900
Frequency range radio-frequency front-end, GSM 1800 and FDD-LTE 1800 frequency range duplexer/filter, 1800 frequency of GSM 1800 and FDD-LTE
1800 frequency range radio-frequency front-end of Duan Gongfang/low noise, GSM 1800 and FDD-LTE, 2300 frequency range duplexer of TDD-LTE/filtering
Device, 2300 frequency range power amplifier of TDD-LTE/low noise, 2300 frequency range radio-frequency front-end of TDD-LTE, WCDMA 2100 and FDD-LTE
2100 frequency range duplexers/filter, WCDMA 2100 and FDD-LTE 2100 frequency range power amplifier/low noise, 2100 He of WCDMA
FDD-LTE2100 frequency range radio-frequency front-end, clock module, RJ45 network interface, FPGA3, CPU mini system, power supply module, SFP is from optical port.
850 frequency range duplexer of the CDMA/filter is connected to 850 frequency range power amplifier of CDMA/low noise, is connected to 850 frequency of CDMA
Section radio-frequency front-end, is connected to the FPGA3.900 frequency range duplexer of the GSM/filter is connected to 900 frequency range function of GSM
/ low noise is put, 900 frequency range radio-frequency front-end of GSM is connected to, is connected to the FPGA3.The GSM 1800 and FDD-LTE
1800 frequency range duplexers/filter is connected to GSM 1800 and FDD-LTE 1800 frequency range power amplifier/low noise, is connected to GSM
1800 and FDD-LTE, 1800 frequency range radio-frequency front-end, is connected to FPGA3.2300 frequency range duplexer of the TDD-LTE/filtering
Device is connected to 2300 frequency range power amplifier of TDD-LTE/low noise, is connected to 2300 frequency range radio-frequency front-end of TDD-LTE, is connected to
FPGA3.The WCDMA 2100 and FDD-LTE 2100 frequency range duplexer/filter are connected to WCDMA 2100 and FDD-LTE
2100 frequency range power amplifiers/low noise are connected to 2100 frequency range radio-frequency front-end of WCDMA 2100 and FDD-LTE, are connected to
FPGA3.The RJ45 network interface connection is to FPGA3.The CPU mini system is connected to FPGA3.The SFP is connected to from optical port
FPGA3.The clock module provides local clock to each radio-frequency front-end and FPGA3.The power module is supplied to each part mentioned above
Electricity.
Further, the access unit, expanding element, radio frequency unit can form Star Network, chain network and star-like
Chain hybrid network.The access unit can support access unit to cascade, and realize any standard cell splitting dilatation.Each standard expands
Rong Shi need to only access dilatation information source newly-increased access unit, increase access newly without changing original expanding element, radio frequency unit
Unit concatenates former access unit.Network construction form is very flexible, and access unit at most can connect 4 expanding elements, while can be with
Connection 3 newly-increased cascade access units realize the dilatation of multi-standard multiple cell, and each expanding element again can star-like connection 9 expansions again
Unit is opened up, at most chain can also connect 4 expanding elements, then each expanding element reconnects multiple radio frequency units.It is described
GSM link has 12 carrier wave frequency-selecting functions, and CDMA, WCDMA, LTE-FDD and TD-LTE link has maximum 6 carrier cells
Divide dilatation function.
The present invention has the advantage that
GSM 900 of the invention, GSM 1800, CDMA 850, WCDMA 2100, LTE-FDD 1800, LTE-
23005 kinds of standards of FDD2100 and TD-LTE, 7 band frequencies are to work at the same time.
The present invention is by selecting different radio-frequency devices that can support all mobile communication standards, all common communications
Frequency range.
Support double hairs are double to receive (double antenna MIMO) in the channel 4G of the invention.
Access unit of the invention supports access unit cascade, realizes any standard cell splitting dilatation.Each standard dilatation
When, without changing original expanding element, radio frequency unit, dilatation information source need to only be accessed newly-increased access unit, it is single to increase access newly
Member concatenates former access unit.
The maximum length of access unit of the invention to the connection optical fiber between radio frequency unit can be 6 kilometers.This length
Degree is access unit, expanding element, the sum of fiber lengths of a light-path between radio frequency unit.
Detailed description of the invention:
Fig. 1 access unit module diagram of the present invention
Fig. 2 expanding element module diagram of the present invention
Fig. 3 radio frequency unit module schematic diagram of the present invention
Fig. 4 present system structural schematic diagram
Fig. 5 radio frequency unit connection schematic diagram of the present invention
Specific embodiment:
The present invention is described further in conjunction with attached drawing.
Illustrate specific embodiment so that product is divided in a kind of room of suitable Chinese steel tower as an example below.The product includes that access is single
Member, expanding element and radio frequency unit.The product needs support 850 frequency range of CDMA, 900 frequency range of GSM, GSM 1800, WCDMA
2100 frequency ranges, 1800 frequency range of FDDLTE, 2100 frequency range of FDDLTE, five kinds of TDLTE2300 frequency range, seven kinds of standard frequency, ten channel.
As shown in fig.1, in this embodiment, the access unit includes: 850 frequency range duplexer of CDMA/filter
Wave device, 850 frequency range radio-frequency front-end of CDMA, 900 frequency range duplexer of GSM/filter, 900 frequency range radio-frequency front-end of GSM, GSM
1800 frequency range duplexers/filter, 1800 frequency range radio-frequency front-end of GSM, WCDMA2100 frequency range duplexer/filter, WCDMA
2100 radio-frequency front-ends, 2300 frequency range duplexer of TDD-LTE/filter, 2300 frequency range radio-frequency front-end of TDD-LTE, FDD-LTE
1800 frequency range duplexers/filter, 1800 frequency range radio-frequency front-end of FDD-LTE, 2100 frequency range duplexer of FDD-LTE/filter,
2100 frequency range radio-frequency front-end of FDD-LTE, clock module, RJ45 debugging serial interface, RJ45 network monitoring network interface, the small system of FPGA1, CPU
System, power supply module, 7 SFP main light ports, 1 SFP is from optical port.850 frequency range duplexer of the CDMA/filter is connected to CDMA
850 frequency range radio-frequency front-ends, are connected to the FPGA1.900 frequency range duplexer of the GSM/filter is connected to 900 frequency of GSM
Section radio-frequency front-end, is connected to FPGA1.1800 frequency range duplexer of the GSM/filter is connected to 1800 frequency range radio frequency of GSM
Front end is connected to FPGA1.The WCDMA2100 frequency range duplexer/filter is connected to 2100 radio-frequency front-end of WCDMA, then
It is connected to FPGA1.2300 frequency range duplexer of the TDD-LTE/filter is connected to 2300 frequency range radio-frequency front-end of TDD-LTE,
It is connected to FPGA1.Before 1800 frequency range duplexer of the FDD-LTE/filter is connected to 1800 frequency range radio frequency of FDD-LTE
End, is connected to FPGA1.Before 2100 frequency range duplexer of the FDD-LTE/filter is connected to FDD-LTE2100 frequency range radio frequency
End, is connected to FPGA1.The RJ45 debugging serial interface is connected to FPGA1.The RJ45 network monitoring network interface connection is to FPGA1.
The CPU mini system is connected to FPGA1.7 SFP main light ports are all connected to FPGA1.1 SFP is all connected with from optical port
To FPGA1.The clock module provides local clock to each radio-frequency front-end and FPGA1.The power module is to each part mentioned above
Power supply.
As shown in fig.2, in this specific implementation, the expanding element includes: clock module, RJ45 network interface,
FPGA2, CPU mini system, power supply module, 1 SFP is from optical port, 9 SFP main light ports.The RJ45 network interface connection is to FPGA2.Institute
It states CPU mini system and is connected to FPGA2.1 SFP is all connected to FPGA2 from optical port and 9 SFP main light ports.The clock mould
Block provides local clock to FPGA2.The power module is powered to each part mentioned above.
As shown in fig.3, the radio frequency unit includes: combiner 1, combiner 2, CDMA in this specific implementation
850 frequency range duplexers/filter, 850 frequency range power amplifier of CDMA/low noise, 850 frequency range radio-frequency front-end of CDMA, 900 frequency range of GSM
Duplexer/filter, 900 frequency range power amplifier of GSM/low noise, 900 frequency range radio-frequency front-end of GSM, GSM 1800 and FDD-LTE
1800 frequency range duplexers/filter, 1800 frequency range power amplifier of GSM 1800 and FDD-LTE/low noise, GSM 1800 and FDD-LTE
1800 frequency range radio-frequency front-ends, 2300 frequency range duplexer of TDD-LTE/filter, 2300 frequency range power amplifier of TDD-LTE/low noise,
TDD-LTE2300 frequency range radio-frequency front-end, WCDMA 2100 and FDD-LTE 2100 frequency range duplexer/filter, WCDMA 2100
With 2100 frequency range power amplifier of FDD-LTE/low noise, 2100 frequency range radio-frequency front-end of WCDMA 2100 and FDD-LTE, clock module,
RJ45 network interface, FPGA3, CPU mini system, power supply module, SFP is from optical port.The CDMA850 frequency range duplexer/filter connection
To 850 frequency range power amplifier of CDMA/low noise, it is connected to 850 frequency range radio-frequency front-end of CDMA, is connected to the FPGA3.It is described
900 frequency range duplexer of GSM/filter is connected to 900 frequency range power amplifier of GSM/low noise, is connected to 900 frequency range radio frequency of GSM
Front end is connected to the FPGA3.The GSM 1800 and FDD-LTE 1800 frequency range duplexer/filter are connected to GSM
1800 and FDD-LTE, 1800 frequency range power amplifier/low noise is connected to 1800 frequency range radio-frequency front-end of GSM 1800 and FDD-LTE,
It is connected to FPGA3.2300 frequency range duplexer of the TDD-LTE/filter is connected to TDD-LTE2300 frequency range power amplifier/low noise
It puts, is connected to 2300 frequency range radio-frequency front-end of TDD-LTE, is connected to FPGA3.The WCDMA 2100 and FDD-LTE
2100 frequency range duplexers/filter is connected to WCDMA 2100 and FDD-LTE 2100 frequency range power amplifier/low noise, is connected to
2100 frequency range radio-frequency front-end of WCDMA 2100 and FDD-LTE, is connected to FPGA3.The RJ45 network interface connection is to FPGA3.Institute
It states CPU mini system and is connected to FPGA3.The SFP is connected to FPGA3 from optical port.The clock module to each radio-frequency front-end and
FPGA3 provides local clock.The power module is powered to each part mentioned above.
The CDMA radio frequency mouth of the access unit is connected by coupler with the radio frequency mouth of CDMA information source base station.The access
The 900 radio frequency mouth of GSM of unit is connected by coupler with the radio frequency mouth of the 900 information source base station GSM.The GSM of the access unit
1800 radio frequency mouths are connected by coupler with the radio frequency mouth of the 1800 information source base station GSM.The WCDMA 2100 of the access unit is penetrated
Frequency mouth is connected by coupler with the radio frequency mouth of the 2100 information source base station WCDMA.The two of the FDD-LTE 1800 of the access unit
A radio frequency mouth is connected each by coupler with two radio frequency mouths of the 1800 information source base station FDD-LTE.The access unit
Two radio frequency mouths of FDD-LTE 2100 are connected each by coupler with two radio frequency mouths of the 2100 information source base station FDD-LTE.
Two radio frequency mouths of the TDLTE of the access unit are connected each by coupler with two radio frequency mouths of TDLTE information source base station.
The SFP of the expanding element is connected from optical port and the main light port (connecing expanding element) of the SFP of access unit by optical fiber
It connects.The SFP of the expanding element can also be connected with the SFP main light port of upper level expanding element by optical fiber from optical port.It is described
The SFP of access unit is connected with the SFP main light port (connecing access unit) of cascade access unit by optical fiber from optical port.
The SFP of the radio frequency unit is connected with the SFP main light port of expanding element by optical fiber from optical port.The radio frequency unit
SFP can also be connected from optical port with the SFP main light port of access unit.The radio frequency mouth 1 of the radio frequency unit and dual polarized antenna
Broadband ports are connected by radio-frequency cable.The radio frequency mouth 2 of the radio frequency unit and another broadband ports of dual polarized antenna pass through
Radio-frequency cable connection.
Present system working principle:
Downlink working principle: access unit passes through 850 radio frequency mouth of CDMA, 900 radio frequency mouth of GSM, GSM1800 radio frequency respectively
Mouth, 2100 radio frequency mouth of WCDMA, 1800 Double RF mouth of LTE-FDD, the 2100 Double RF port LTE-FDD, TDLTE Double RF mouth
Radiofrequency signal is obtained from information source base station.850 radiofrequency signal of CDMA passes through duplexer branch and filters, and then inputs CDMA 850
Radio-frequency front-end.It is integrated with downstream mixer in 850 radio-frequency front-end of CDMA, receives local oscillator, AD (modulus) converter, digital filtering
Device.The digital signal come out from 850 radio-frequency front-end of CDMA enters FPGA1, becomes to accord with after Digital Down Convert, linear filter
Close the code stream of CPRI agreement.900 radiofrequency signal of GSM passes through duplexer branch and filters, and then inputs 900 radio-frequency front-end of GSM.
It is integrated with downstream mixer in 900 radio-frequency front-end of GSM, receives local oscillator, AD converter, digital filter.From 900 radio frequency of GSM
The digital signal that front end comes out enters FPGA1, becomes the code stream for meeting CPRI agreement after Digital Down Convert, linear filter.
1800 radiofrequency signal of GSM passes through duplexer branch and filters, and then inputs 1800 radio-frequency front-end of GSM.Before 1800 radio frequency of GSM
It is integrated with downstream mixer in end, receives local oscillator, AD converter, digital filter.The number come out from 1800 radio-frequency front-end of GSM
Word signal enters FPGA1, becomes the code stream for meeting CPRI agreement after Digital Down Convert, linear filter.WCDMA 2100 is penetrated
Frequency signal passes through duplexer branch and filters, and then inputs 2100 radio-frequency front-end of WCDMA.Collection in 2100 radio-frequency front-end of WCDMA
At downstream mixer, local oscillator, AD converter, digital filter are received.The number letter come out from 2100 radio-frequency front-end of WCDMA
Number enter FPGA1, become the code stream for meeting CPRI agreement after Digital Down Convert, linear filter.LTE-FDD is penetrated on 18002 tunnel
Frequency signal passes through duplexer branch and filters, and then inputs 1800 radio-frequency front-end of LTE-FDD.1800 radio-frequency front-end of LTE-FDD
2 tunnel downstream mixers are inside integrated with, local oscillator, 2 road AD converters, 2 railway digital filters are received.Before 1800 radio frequency of LTE-FDD
It brings out the digital signal come and enters FPGA1, become the code stream for meeting CPRI agreement after Digital Down Convert, linear filter.
21002 tunnel radiofrequency signal of LTE-FDD passes through duplexer branch and filters, and then inputs 2100 radio-frequency front-end of LTE-FDD.LTE-
It is integrated with 2 tunnel downstream mixers in 2100 radio-frequency front-end of FDD, receives local oscillator, 2 road AD converters, 2 railway digital filters.From
The digital signal that 2100 radio-frequency front-end of LTE-FDD comes out enters FPGA1, becomes to meet after Digital Down Convert, linear filter
The code stream of CPRI agreement.Then the 2 road signals of TDLTE input TDLTE radio-frequency front-end by filters filter.Before TDLTE radio frequency
2 tunnel downstream mixers, 2 road AD converters, 2 railway digital filters are integrated in end.The number letter come out from TDLTE radio-frequency front-end
Number enter FPGA1, become the code stream for meeting CPRI agreement after Digital Down Convert, linear filter.Above-mentioned CDMA850 code stream,
900 code stream of GSM, 1800 code stream of GSM, 2100 code stream of WCDMA, 1800 code stream of FDDLTE, FDDLTE 2100, TDLTE code stream
It respectively enters the CPRI module inside FPGA1 to be packaged, then be exported by SFP optical port.
The SFP optical port of access unit connection expanding element can connect expanding element, can also be directly connected to radio frequency unit.
The SFP of access unit connects the SFP main light port of cascade access unit from optical port, is used for source foreign dilatation.Expanding element is under
The effect of line direction is CPRI data distribution that SFP is inputted from optical port to each SFP main light port.
Radio frequency unit receive SFP optical port come CPRI format data after using FPGA3 recover 850 code stream of CDMA,
900 code stream of GSM, 1800 code stream of GSM, 2100 code stream of WCDMA, 1800 code stream of FDDLTE, FDDLTE 2100, TDLTE code
Stream.850 code stream of CDMA is output to 850 radio-frequency front-end of CDMA after Digital Up Convert, linear filter.Before 850 radio frequency of CDMA
Digital filter is integrated in end, downstream mixer emits local oscillator, DA (digital-to-analogue) converter.Go out from 850 radio-frequency front-end of CDMA
The analog signal come enters 850 power amplifier module of CDMA and carries out power amplification, be filtered subsequently into 850 duplexer of CDMA and
Transmitting-receiving combining, is then output to combiner again.900 code stream of GSM is output to GSM 900 after Digital Up Convert, linear filter
Radio-frequency front-end.Digital filter is integrated in 900 radio-frequency front-end of GSM, downstream mixer emits local oscillator, DA (digital-to-analogue) conversion
Device.The analog signal come out from 900 radio-frequency front-end of GSM enters 900 power amplifier module of GSM and carries out power amplification, subsequently into GSM
1800 duplexers are filtered and receive and dispatch combining, are then output to combiner again.Number is integrated in 1800 radio-frequency front-end of GSM
Filter, downstream mixer emit local oscillator, DA (digital-to-analogue) converter.From 1800 radio-frequency front-end of GSM come out analog signal into
Enter 1800 power amplifier module of GSM and carry out power amplification, is filtered and receives and dispatches combining subsequently into 1800 duplexer of GSM, then
It is output to combiner again.Digital filter is integrated in 2100 radio-frequency front-end of WCDMA, downstream mixer emits local oscillator, DA (number
Mould) converter.The analog signal come out from 2100 radio-frequency front-end of WCDMA enters 2100 power amplifier module of WCDMA progress power and puts
Greatly, it is filtered and is received and dispatched combining subsequently into 2100 duplexer of WCDMA, be then output to combiner again.LTEFDD 1800
Code stream is output to 1800 radio-frequency front-end of LTEFDD after Digital Up Convert, linear filter.In 1800 radio-frequency front-end of LTEFDD
2 railway digital filters are integrated with, 2 tunnel downstream mixers emit local oscillator, 2 tunnel D/A converters.From 1800 radio-frequency front-end of LTEFDD
2 tunnel analog signals out enter 1800 power amplifier module of two-way LTEFDD and carry out power amplification, subsequently into two-way
LTEFDD1800 duplexer is filtered, and is then wherein output to combiner again all the way, is in addition output to another combining again all the way
Device.2100 code stream of LTEFDD is output to 2100 radio-frequency front-end of LTEFDD after Digital Up Convert, linear filter.LTEFDD
2 railway digital filters are integrated in 2100 radio-frequency front-ends, 2 tunnel downstream mixers emit local oscillator, 2 tunnel D/A converters.From LTEFDD
The 2 tunnel analog signals that 2100 radio-frequency front-ends come out enter 2100 power amplifier module of two-way LTEFDD and carry out power amplification, subsequently into
2100 duplexer of two-way LTEFDD is filtered, and is then wherein output to combiner again all the way, is in addition output to again all the way another
Combiner.TDLTE code stream is output to TDLTE radio-frequency front-end after Digital Up Convert, linear filter.In TDLTE radio-frequency front-end
It is integrated with 2 railway digital filters, 2 tunnel downstream mixers, 2 tunnel D/A converters.Letter is simulated from 2 tunnels that TDLTE radio-frequency front-end comes out
Number enter two-way TDLTE power amplifier module carry out power amplification, subsequently into two-way TDLTE filters filter, then wherein all the way
It is output to combiner again, is in addition output to another combiner again all the way.Into the CDMA 850 of combiner, LTEFDD 1800,
LTEFDD 2100 and the road TDLTE signal are output to the wide band radio-frequency port 1 of dual polarized antenna after being combined.Into another combiner
GSM 900, GSM 1800WCDMA 2100, LTEFDD 1800, LTEFDD 2100 and the road TDLTE signal combining after be output to
The wide band radio-frequency port 2 of dual polarized antenna.
Uplink working principle: radio frequency unit passes through radio frequency mouth 1 respectively and receives the broadband upstream signal that dual polarized antenna is sent,
This signal is divided into CDMA 850, LTEFDD 1800, LTEFDD 2100 and TDLTE uplink signal after combiner.Radio frequency
Unit mouth 2 receives the broadband upstream signal that dual polarized antenna is sent, this signal is divided into GSM 900, GSM after combiner
1800WCDMA 2100, LTEFDD 1800, LTEFDD 2100 and TDLTE.Above-mentioned 850 signal of CDMA passes through duplexer branch
And filter, 850 low noise of CDMA is then inputted, 850 radio-frequency front-end of CDMA is entered back into.It is integrated in 850 radio-frequency front-end of CDMA
Upstream mixer receives local oscillator, AD (modulus) converter, digital filter.The number letter come out from 850 radio-frequency front-end of CDMA
Number enter FPGA3, become the code stream for meeting CPRI agreement after Digital Down Convert, linear filter.Above-mentioned GSM900 signal is logical
It crosses duplexer branch and filters, then input 900 low noise of GSM, enter back into 900 radio-frequency front-end of GSM.Before 900 radio frequency of GSM
It is integrated with upstream mixer in end, receives local oscillator, AD (modulus) converter, digital filter.It is come out from 900 radio-frequency front-end of GSM
Digital signal enter FPGA3, become the code stream for meeting CPRI agreement after Digital Down Convert, linear filter.GSM 1800
It is integrated with upstream mixer in radio-frequency front-end, receives local oscillator, AD (modulus) converter, digital filter.From 1800 radio frequency of GSM
The digital signal that front end comes out enters FPGA3, becomes the code stream for meeting CPRI agreement after Digital Down Convert, linear filter.
It is integrated with upstream mixer in 2100 radio-frequency front-end of WCDMA, receives local oscillator, AD (modulus) converter, digital filter.From
The digital signal that 2100 radio-frequency front-end of WCDMA comes out enters FPGA3, becomes to meet after Digital Down Convert, linear filter
The code stream of CPRI agreement.Then the 2 road signals of LTEFDD 1800 input 1800 low noise of LTEFDD by filters filter,
Enter back into 1800 radio-frequency front-end of LTEFDD.It is integrated with 2 tunnel upstream mixers in LTEFDD1800 radio-frequency front-end, receives local oscillator, 2
Road AD converter, 2 railway digital filters.The digital signal come out from 1800 radio-frequency front-end of LTEFDD enters FPGA3, by number
Become the code stream for meeting CPRI agreement after word down coversion, linear filter.The 2 road signals of LTEFDD 2100 pass through filters filter,
Then 2100 low noise of LTEFDD is inputted, 2100 radio-frequency front-end of LTEFDD is entered back into.It is integrated in 2100 radio-frequency front-end of LTEFDD
2 tunnel upstream mixers receive local oscillator, 2 road AD converters, 2 railway digital filters.It is come out from 2100 radio-frequency front-end of LTEFDD
Digital signal enter FPGA3, become the code stream for meeting CPRI agreement after Digital Down Convert, linear filter.The 2 of TDLTE
Then road signal inputs TDLTE low noise, enters back into TDLTE radio-frequency front-end by filters filter.In TDLTE radio-frequency front-end
2 tunnel upstream mixers are integrated with, local oscillator, 2 road AD converters, 2 railway digital filters are received.It is come out from TDLTE radio-frequency front-end
Digital signal enters FPGA3, becomes the code stream for meeting CPRI agreement after Digital Down Convert, linear filter.Above-mentioned CDMA
850 code streams, 900 code stream of GSM, 1800 code stream of GSM, 2100 code stream of WCDMA, LTEFDD1800 code stream, 2100 yards of LTEFDD
Stream, TDLTE code stream, the CPRI module respectively enterd inside FPGA3 are packaged, and are then exported by SFP optical port.
The SFP optical port of radio frequency unit can connect expanding element, can also be directly connected to access unit.Expanding element is upper
The effect of line direction carries out amplitude adjustment to radio frequency CPRI data, then carries out vector addition, is merged into CPRI data all the way, sends out
It is sent to upper level expanding element or access unit.
Access unit receive SFP optical port come CPRI format data after using FPGA1 recover 850 code stream of CDMA,
900 code stream of GSM, 1800 code stream of GSM, 2100 code stream of WCDMA, 1800 code stream of LTEFDD, 2100 code stream of LTEFDD, TDLTE
Code stream.850 code stream of CDMA is output to 850 radio-frequency front-end of CDMA after Digital Up Convert, linear filter.850 radio frequency of CDMA
Digital filter is integrated in front end, upstream mixer emits local oscillator, DA (digital-to-analogue) converter.From 850 radio-frequency front-end of CDMA
Analog signal out enters CDMA850 duplexer and is filtered and receives and dispatches combining, is then output to 850 port CDMA.GSM
900 code streams are output to 900 radio-frequency front-end of GSM after Digital Up Convert, linear filter.It is integrated in 900 radio-frequency front-end of GSM
Digital filter, upstream mixer emit local oscillator, DA (digital-to-analogue) converter.The analog signal come out from 900 radio-frequency front-end of GSM
It is filtered and is received and dispatched combining into 900 duplexer of GSM, is then output to the port GSM900.1800 code stream of GSM is by number
1800 radio-frequency front-end of GSM is output to after up-conversion, linear filter.It is integrated with digital filter in 1800 radio-frequency front-end of GSM, on
Row frequency mixer emits local oscillator, DA (digital-to-analogue) converter.The analog signal come out from 1800 radio-frequency front-end of GSM enters GSM 1800
Duplexer is filtered and receives and dispatches combining, is then output to 1800 port GSM.2100 code stream of WCDMA by Digital Up Convert,
2100 radio-frequency front-end of WCDMA is output to after linear filter.Digital filter, uplink are integrated in 2100 radio-frequency front-end of WCDMA
Frequency mixer emits local oscillator, DA (digital-to-analogue) converter.The analog signal come out from 2100 radio-frequency front-end of WCDMA enters WCDMA
2100 duplexers are filtered and receive and dispatch combining, are then output to the port WCDMA2100.1800 code stream of LTEFDD is by number
1800 radio-frequency front-end of LTEFDD is output to after up-conversion, linear filter.2 railway digitals are integrated in 1800 radio-frequency front-end of LTEFDD
Filter, 2 tunnel upstream mixers emit local oscillator, 2 tunnel D/A converters.It is simulated from 2 tunnels that 1800 radio-frequency front-end of LTEFDD comes out
Signal enters 1800 filters filter of two-way LTEFDD, is then output to 2 1800 ports LTEFDD.2100 yards of LTEFDD
Stream is output to 2100 radio-frequency front-end of LTEFDD after Digital Up Convert, linear filter.Collection in 2100 radio-frequency front-end of LTEFDD
At 2 railway digital filters, 2 tunnel upstream mixers emit local oscillator, 2 tunnel D/A converters.Go out from 2100 radio-frequency front-end of LTEFDD
The 2 tunnel analog signals come enter 2100 filters filter of two-way LTEFDD, are then output to 2 2100 ports LTEFDD.
TDLTE code stream is output to TDLTE radio-frequency front-end after Digital Up Convert, linear filter.2 are integrated in TDLTE radio-frequency front-end
Railway digital filter, 2 tunnel upstream mixers, 2 tunnel D/A converters.The 2 tunnel analog signals come out from TDLTE radio-frequency front-end enter double
Road TDLTE filters filter is then output to 2 ports TDLTE.
Embodiment of above is only an example of the present invention, therefore, it cannot be limited according to practical range of the invention,
The equivalent changes and modifications done according to present specification, should still belong in the range of the present invention covers.
Claims (3)
1. a kind of five moulds, seven ten channel intelligent digital optical fiber indoor distributed systems of frequency, which is characterized in that CDMA, GSM, WCDMA,
Ten channel of five kinds of TDD-LTE, FDD-LTE seven kinds of standard frequency works at the same time, and supports double hairs of 4G are double to receive；The number
Word optical fiber indoor distributed system is made of access unit, expanding element, radio frequency unit；The access unit and expanding element connect
It connects, or is directly connected to radio frequency unit, or connected with another access unit and realize cell splitting Diffuse Dimension model；The expanding element
It connects with radio frequency unit, or is connected with next stage expanding element；Above-mentioned all connections all use optical fiber；
When each standard dilatation, without changing original expanding element, radio frequency unit, dilatation information source need to only be accessed newly-increased access list
Member increases access unit newly and concatenates former access unit；By selecting different radio-frequency devices to go to support all mobile communication standards
And all common communication frequency ranges；Access unit includes 7 SFP main light ports, and 1 SFP is from optical port；Access unit at most connects 4
Expanding element, while connecting 3 newly-increased cascade access units and realizing the dilatation of multi-standard multiple cell；The SFP of the expanding element from
Optical port is connected with the main light port of the SFP of access unit by optical fiber, and the SFP of the expanding element is also extended with upper level from optical port
The SFP main light port of unit is connected by optical fiber, the SFP main light port of the SFP of the access unit from optical port and cascade access unit
It is connected by optical fiber.
2. seven ten channel intelligent digital optical fiber indoor distributed systems of frequency of a kind of five mould according to claim 1, feature exist
In the access unit includes: CDMA850 frequency range duplexer/filter, CDMA850 frequency range radio-frequency front-end, GSM900 frequency range pair
Work device/filter, GSM900 frequency range radio-frequency front-end, GSM1800 frequency range duplexer/filter, GSM1800 frequency range radio-frequency front-end,
WCDMA2100 frequency range duplexer/filter, WCDMA2100 radio-frequency front-end, TDD-LTE2300 frequency range duplexer/filter,
TDD-LTE2300 frequency range radio-frequency front-end, FDD-LTE1800 frequency range duplexer/filter, FDD-LTE1800 frequency range radio-frequency front-end,
FDD-LTE2100 frequency range duplexer/filter, FDD-LTE2100 frequency range radio-frequency front-end, clock module, RJ45 debugging serial interface,
RJ45 network monitoring network interface, FPGA1, CPU mini system, power supply module, 7 SFP main light ports, 1 SFP is from optical port；It is described
CDMA850 frequency range duplexer/filter is connected to CDMA850 frequency range radio-frequency front-end, is connected to the FPGA1；It is described
GSM900 frequency range duplexer/filter is connected to GSM900 frequency range radio-frequency front-end, is connected to FPGA1；The GSM1800 frequency range
Duplexer/filter is connected to GSM1800 frequency range radio-frequency front-end, is connected to FPGA1；The WCDMA2100 frequency range duplexer/
Filter is connected to WCDMA2100 radio-frequency front-end, is connected to FPGA1；The TDD-LTE2300 frequency range duplexer/filter
It is connected to TDD-LTE2300 frequency range radio-frequency front-end, is connected to FPGA1；The FDD-LTE1800 frequency range duplexer/filter
It is connected to FDD-LTE1800 frequency range radio-frequency front-end, is connected to FPGA1；The FDD-LTE2100 frequency range duplexer/filter
It is connected to FDD-LTE2100 frequency range radio-frequency front-end, is connected to FPGA1；The RJ45 debugging serial interface is connected to FPGA1；It is described
RJ45 network monitoring network interface connection is to FPGA1；The CPU mini system is connected to FPGA1；7 SFP main light ports are all connected to
FPGA1；1 SFP is all connected to FPGA1 from optical port；When the clock module provides local to each radio-frequency front-end and FPGA1
Clock；Power supply module is powered to each part mentioned above；
The expanding element includes: clock module, RJ45 network interface, FPGA2, CPU mini system, power supply module, 1 SFP from optical port,
9 SFP main light ports；The RJ45 network interface connection is to FPGA2；The CPU mini system is connected to FPGA2；1 SFP is from light
Mouth and 9 SFP main light ports are all connected to FPGA2；The clock module provides local clock to FPGA2；Power supply module is to above-mentioned
Each section power supply；
The radio frequency unit includes: CDMA850 frequency range duplexer/filter, CDMA850 frequency range power amplifier/low noise, CDMA850
Frequency range radio-frequency front-end, GSM900 frequency range duplexer/filter, GSM900 frequency range power amplifier/low noise, before GSM900 frequency range radio frequency
End, GSM1800 and FDD-LTE1800 frequency range duplexer/filter, GSM1800 and FDD-LTE1800 frequency range power amplifier/low noise,
GSM1800 and FDD-LTE1800 frequency range radio-frequency front-end, TDD-LTE2300 frequency range duplexer/filter, TDD-LTE2300 frequency range
Power amplifier/low noise, TDD-LTE2300 frequency range radio-frequency front-end, WCDMA2100 and FDD-LTE2100 frequency range duplexer/filter,
WCDMA2100 and FDD-LTE2100 frequency range power amplifier/low noise, WCDMA2100 and FDD-LTE2100 frequency range radio-frequency front-end, clock
Module, RJ45 network interface, FPGA3, CPU mini system, power supply module, SFP is from optical port；The CDMA850 frequency range duplexer/filter
It is connected to CDMA850 frequency range power amplifier/low noise, CDMA850 frequency range radio-frequency front-end is connected to, is connected to the FPGA3；Institute
It states GSM900 frequency range duplexer/filter and is connected to GSM900 frequency range power amplifier/low noise, before being connected to GSM900 frequency range radio frequency
End, is connected to the FPGA3；GSM1800 the and FDD-LTE1800 frequency range duplexer/filter be connected to GSM1800 and
FDD-LTE1800 frequency range power amplifier/low noise, is connected to GSM1800 and FDD-LTE1800 frequency range radio-frequency front-end, is connected to
FPGA3；The TDD-LTE2300 frequency range duplexer/filter is connected to TDD-LTE2300 frequency range power amplifier/low noise, reconnects
To TDD-LTE2300 frequency range radio-frequency front-end, it is connected to FPGA3；WCDMA2100 the and FDD-LTE2100 frequency range duplexer/
Filter is connected to WCDMA2100 and FDD-LTE2100 frequency range power amplifier/low noise, is connected to WCDMA2100 and FDD-
LTE2100 frequency range radio-frequency front-end, is connected to FPGA3；The RJ45 network interface connection is to FPGA3；The CPU mini system is connected to
FPGA3；The SFP is connected to FPGA3 from optical port；The clock module provides local clock to each radio-frequency front-end and FPGA3；For
Electric module is powered to each part mentioned above.
3. seven ten channel intelligent digital optical fiber indoor distributed systems of frequency of a kind of five mould according to claim 2, feature exist
In: the access unit, expanding element, radio frequency unit form Star Network, chain network and the star-like hybrid network of chain；It is described
Access unit supports access unit cascade, realizes any standard cell splitting dilatation；GSM link has 12 carrier wave frequency-selecting functions,
CDMA, WCDMA, FDD-LTE and TDD-LTE link have maximum 6 carrier cells division dilatation function.
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| CN203788468U (en) * | 2014-04-11 | 2014-08-20 | 上海欣民通信技术有限公司 | Digital optical fiber remote device with GSM, DCS, TD-SCDMA and WLAN coexistence |
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Denomination of invention: Five-mode seven-frequency ten-channel intelligent digital optical fiber indoor distribution system Effective date of registration: 20200612 Granted publication date: 20181218 Pledgee: Nanjing Bank Co.,Ltd. Nanjing Financial City Branch Pledgor: NANJING DIGITGATE TECHNOLOGY Co.,Ltd. Registration number: Y2020980003035 |
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