CN106301581A - The digital fiber remote termination that a kind of two-way signaling amplifies - Google Patents
The digital fiber remote termination that a kind of two-way signaling amplifies Download PDFInfo
- Publication number
- CN106301581A CN106301581A CN201610607113.7A CN201610607113A CN106301581A CN 106301581 A CN106301581 A CN 106301581A CN 201610607113 A CN201610607113 A CN 201610607113A CN 106301581 A CN106301581 A CN 106301581A
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- Prior art keywords
- module
- signal
- electric wire
- frequency
- power amplifier
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Classifications
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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
- H04B10/29—Repeaters
- H04B10/291—Repeaters in which processing or amplification is carried out without conversion of the main signal from optical form
- H04B10/297—Bidirectional amplification
-
- 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
- H04B10/25753—Distribution optical network, e.g. between a base station and a plurality of remote units
Abstract
The invention discloses the digital fiber remote termination that a kind of two-way signaling amplifies, including power module, optical communication module, LNA frequency-variable module, power amplifier module, duplexer and forwarding antenna, amplifying in the same direction and reversely of signal can be realized；Power module is connected with LNA frequency-variable module by the first power cable, connected with power amplifier module by second source electric wire, optical communication module is arranged on above LNA frequency-variable module, LNA frequency-variable module is connected with duplexer by the 3rd electric wire, connected with power amplifier module by the 4th electric wire, power amplifier module is connected with duplexer by the second electric wire, and duplexer is connected with forwarding antenna by the first electric wire.The signal of proximal fiber machine input can not only be amplified by the present invention in the same direction, the mobile phone signal received can also be carried out the isolation of effective spurious signal and improve the usefulness of digital fiber remote termination, and effectively isolate the interference between uplink and downlink signals and the interference impact on signal amplification.
Description
Technical field
The present invention relates to a kind of wireless mobile communications field, particularly relate to the digital fiber far-end that a kind of two-way signaling amplifies
Machine.
Background technology
Along with the fast development of cordless communication network, the semaphore request of mobile communication is also improved constantly by client, indoor letter
Number covering requirement and prescription the most vigorous, traditional indoor distributed system can not meet present situation client to signal
The requirement covered, so, the most employing optical fiber are one of which mainstream applications forms as the fiber distal end machine of transmission signal.
But, existing fiber distal end machine there is problems in that 1, Signal segregation degree is bad, and easily causing self-excitation risk cannot be accurately
Control uplink and downlink signal.2, can only carry out the big amplification of signal, the mobile phone signal received is spuious excessive, affects the end and makes an uproar.
Summary of the invention
It is an object of the invention to overcome the deficiencies in the prior art, it is provided that a kind of capacity of resisting disturbance is strong, it is possible to realize in the same direction
Amplify and can be effectively isolated the spuious digital fiber remote termination of mobile phone signal with reverse signal.
It is an object of the invention to be achieved through the following technical solutions: the digital fiber far-end that a kind of two-way signaling amplifies
Machine, including power module, optical communication module, LNA frequency-variable module, power amplifier module, duplexer and forwarding antenna, it is possible to realize
Amplifying in the same direction and reversely of signal；Described power module is by the first power cable with described LNA frequency-variable module even
Connecing, connected with described power amplifier module by second source electric wire, described optical communication module is arranged on described LNA and becomes
Above frequency module, described LNA frequency-variable module is connected with described duplexer by the 3rd electric wire, by the 4th electricity
Line cable connects with described power amplifier module, and described power amplifier module is connected with described duplexer by the second electric wire,
Described duplexer is connected with described forwarding antenna by the first electric wire.
Described low noise frequency-variable module includes IF board, shift frequency unit and converter unit；
Described IF board mainly realizes converting digital signals into analog if signal；
Described radio frequency unit mainly realizes analog if signal is converted to radiofrequency signal；
The coupled signal frequency conversion that described converter unit mainly realizes exporting power amplifier module is amplified.
Described optical communication module mainly realizes the optical signal of the proximal fiber machine received is converted to digital signal.
Upward signal and the downstream signal of power amplifier module output that LNA frequency-variable module is exported by described duplexer enter
Row signal is isolated.
The downstream signal that described forwarding antenna mainly realizes the first electric wire transmits sends, and connects simultaneously
Receive the signal from mobile phone the most reversely to amplify.
The IF board that described power amplifier module one signal of coupling is transferred in LNA frequency-variable module completes DPD and adjusts.
Described power module includes 28V feeder ear, 9V feeder ear and AC input；The 220V of input is handed over by power module
Stream electricity is powered by the power amplifier module described in 28V feeder ear and second source wire pair after carrying out AC/DC conversion, passes through 9V
Described LNA frequency-variable module is powered by feeder ear and the first power cable, real by the power interface in far end box
Now the power supply of described AC input is inputted.
The invention has the beneficial effects as follows: the digital fiber remote termination that a kind of two-way signaling amplifies, it is possible to strengthen and covered ground
Signal intensity, the simultaneously interference between effective isolation upward signal and downstream signal, capacity of resisting disturbance is strong, and can not only
Enough signals to the input of proximal fiber machine amplify in the same direction, moreover it is possible to the mobile phone signal received is carried out effective spurious signal
Isolation improves the usefulness of digital fiber remote termination.
Accompanying drawing explanation
Fig. 1 is fiber distal end machine structure chart；
In figure, 1-fiber distal end machine enclosure, 2-power amplifier module, 3-LNA frequency-variable module, 4-power module, 5-duplexer, 6-
Optical communication module, 7-forwarding antenna, 8-proximal fiber machine, 9-the first electric wire, 10-the second electric wire, 11-the 3rd electric wire
Cable, 12-the 4th electric wire, 13-the 5th electric wire, 14-the first power cable, 15-second source electric wire.
Detailed description of the invention
Technical scheme is described in further detail below in conjunction with the accompanying drawings, but protection scope of the present invention is not limited to
The following stated.
As it is shown in figure 1, a kind of two-way signaling amplify digital fiber remote termination, including power module 4, optical communication module 6,
LNA frequency-variable module 3, power amplifier module 2, duplexer 5 and forwarding antenna 7, it is possible to realize amplifying in the same direction and reversely of signal；Institute
The power module 4 stated is connected, by second source electric wire 15 with described LNA frequency-variable module 3 by the first power cable 14
With described power amplifier module 2 connects, described optical communication module 6 is arranged on above described LNA frequency-variable module 3, described
LNA frequency-variable module 3 is connected, by the 4th electric wire 12 with described with described duplexer 5 by the 3rd electric wire 11
Power amplifier module 2 connect, described power amplifier module 2 is connected by second electric wire duplexer 5 with described in 10, and described is double
Multiplexer 5 is connected with described forwarding antenna 7 by the first electric wire 9.
Described low noise frequency-variable module 3 includes IF board, shift frequency unit and converter unit；
Described IF board mainly realizes converting digital signals into analog if signal；
Described radio frequency unit mainly realizes analog if signal is converted to radiofrequency signal；
The coupled signal frequency conversion that described converter unit mainly realizes exporting power amplifier module is amplified.
Described optical communication module 6 mainly realizes the optical signal of the proximal fiber machine 8 received is converted to digital signal.
Upward signal that LNA frequency-variable module 3 is exported by described duplexer 5 and the downstream signal that power amplifier module 2 exports
Carry out signal isolation.
The downstream signal that described forwarding antenna 7 mainly realizes the first electric wire 9 transmits sends, simultaneously
Receive the signal from mobile phone the most reversely to amplify.
Described power amplifier module 2 couples the IF board that a signal is transferred in LNA frequency-variable module 3 and completes DPD and adjust
Whole.
Described power module 4 includes 28V feeder ear, 9V feeder ear and AC input；Power module is by the 220V of input
Described power amplifier module 2 is powered after carrying out AC/DC conversion by alternating current by 28V feeder ear and second source electric wire 15,
By 9V feeder ear and the first power cable 14, described LNA frequency-variable module 3 is powered, by far end box 1
Power interface realizes the power supply to described AC input and inputs.
The present invention is when realizing signal amplification in the same direction, and optical communication module 6 receives the optical signal from proximal fiber machine 8, and
After converting optical signals into digital signal, converted digital signals in simulation by the IF board in LNA frequency-variable module 3
Frequently signal, then by the radio frequency unit in LNA frequency-variable module 3, intermediate-freuqncy signal is converted to radiofrequency signal.Radiofrequency signal is passed through
4th electric wire 12 is input to power amplifier module 2 and is amplified, if the situation of distortion occurs in signal, power amplifier module 2 will coupling
Close out a coupled signal and complete DPD tune by the converter unit that the 5th electric wire 13 is input in LNA frequency-variable module 3
Whole, the signal after then LNA frequency-variable module 3 will be adjusted returns to power amplifier module 2, last merit by the 4th electric wire 12
Downstream signal is input to duplexer 5 by the second electric wire 10 by amplification module 2.Under duplexer 5 is incited somebody to action by the first electric wire 9
Row signal is input to forwarding antenna 7 and forwards, it is achieved signal amplifies in the same direction.Meanwhile, forwarding antenna 7 receives the letter from mobile phone
Number being input to duplexer 5 by the first electric wire 9, then the upward signal of duplexer 5 output is by the 3rd electric wire 11
It is input to LNA frequency-variable module 3 and realizes reverse signal amplification.Upward signal and downstream signal can effectively be entered by duplexer 5
Row isolation, the impact that signal is amplified by the interference between anti-stop signal.
The above is only the preferred embodiment of the present invention, it should be understood that the present invention is not limited to described herein
Form, is not to be taken as the eliminating to other embodiments, and can be used for other combinations various, amendment and environment, and can be at this
In the described contemplated scope of literary composition, it is modified by above-mentioned teaching or the technology of association area or knowledge.And those skilled in the art are entered
The change of row and change, the most all should be at the protection domains of claims of the present invention without departing from the spirit and scope of the present invention
In.
Claims (7)
1. the digital fiber remote termination that a two-way signaling amplifies, it is characterised in that: include power module (4), optical communication module
(6), LNA frequency-variable module (3), power amplifier module (2), duplexer (5) and forwarding antenna (7)；Described power module (4) leads to
Crossing the first power cable (14) and connect with described LNA frequency-variable module (3), power module (4) is also by second source electric wire
(15) connecting with described power amplifier module (2), described optical communication module (6) is arranged on described LNA frequency-variable module (3)
On, described LNA frequency-variable module (3) is connected with described duplexer (5) by the 3rd electric wire (11), by the 4th
Electric wire (12) connects with described power amplifier module (2), and described power amplifier module (2) passes through the second electric wire (10) with institute
The duplexer (5) stated connects, and described duplexer (5) is connected with described forwarding antenna (7) by the first electric wire (9).
The digital fiber remote termination that a kind of two-way signaling the most according to claim 1 amplifies, it is characterised in that: described is low
Noise frequency-variable module (3) includes IF board, shift frequency unit and converter unit；
Described IF board mainly realizes converting digital signals into analog if signal；
Described radio frequency unit mainly realizes analog if signal is converted to radiofrequency signal；
The coupled signal frequency conversion that described converter unit mainly realizes exporting power amplifier module is amplified.
The digital fiber remote termination that a kind of two-way signaling the most according to claim 1 amplifies, it is characterised in that: described light
The optical signal of the proximal fiber machine (8) received is converted to digital signal by communication module (6).
The digital fiber remote termination that a kind of two-way signaling the most according to claim 1 amplifies, it is characterised in that: described is double
Upward signal that LNA frequency-variable module (3) is exported by multiplexer (5) and the downstream signal that power amplifier module (2) exports carry out signal every
From.
The digital fiber remote termination that a kind of two-way signaling the most according to claim 1 amplifies, it is characterised in that: described turns
Send out antenna (7) to be sent by the downstream signal that the first electric wire (9) transmits, receive the signal from mobile phone right simultaneously
After reversely amplify.
The digital fiber remote termination that a kind of two-way signaling the most according to claim 1 amplifies, it is characterised in that: described merit
The IF board that amplification module (2) one signal of coupling is transferred in LNA frequency-variable module (3) completes DPD and adjusts.
The digital fiber remote termination that a kind of two-way signaling the most according to claim 1 amplifies, it is characterised in that: described electricity
Source module (4) includes 28V feeder ear, 9V feeder ear and AC input；The 220V alternating current of input is carried out AC/DC by power module
By 28V feeder ear and second source electric wire (15), described power amplifier module is powered after conversion, by 9V feeder ear and
Described LNA frequency-variable module is powered by the first power cable (14), real by the power interface in far end box (1)
Now the power supply of described AC input is inputted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610607113.7A CN106301581A (en) | 2016-07-29 | 2016-07-29 | The digital fiber remote termination that a kind of two-way signaling amplifies |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610607113.7A CN106301581A (en) | 2016-07-29 | 2016-07-29 | The digital fiber remote termination that a kind of two-way signaling amplifies |
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| Publication Number | Publication Date |
|---|---|
| CN106301581A true CN106301581A (en) | 2017-01-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610607113.7A Pending CN106301581A (en) | 2016-07-29 | 2016-07-29 | The digital fiber remote termination that a kind of two-way signaling amplifies |
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Citations (9)
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| CN101034943A (en) * | 2006-03-09 | 2007-09-12 | 上海欣民通信技术有限公司 | WCDMA optical fiber direct amplifying station |
| CN101262457A (en) * | 2007-03-07 | 2008-09-10 | 中兴通讯股份有限公司 | A time division duplex linear power amplification module with digital pre-distortion technology |
| CN201243292Y (en) * | 2008-07-11 | 2009-05-20 | 福建三元达通讯股份有限公司 | Digital frequency selection optical fiber station |
| CN201248143Y (en) * | 2008-08-29 | 2009-05-27 | 福建三元达通讯股份有限公司 | Pressing belt ultra-far shrouding system |
| CN201528431U (en) * | 2009-09-23 | 2010-07-14 | 京信通信系统（中国）有限公司 | CDMA digital optical fiber repeater system based on far-end integral module |
| CN101951701A (en) * | 2010-10-19 | 2011-01-19 | 京信通信系统（中国）有限公司 | DPD-based far-end machine and repeater system |
| CN201805424U (en) * | 2010-08-18 | 2011-04-20 | 奥维通信股份有限公司 | Digital predistortion repeater for mobile multimedia broadcast |
| CN102412855A (en) * | 2010-09-20 | 2012-04-11 | 大唐移动通信设备有限公司 | Determination method of impedance match situation and equipment |
| WO2016038336A1 (en) * | 2014-09-12 | 2016-03-17 | Bae Systems Plc | Signal processing apparatus |
-
2016
- 2016-07-29 CN CN201610607113.7A patent/CN106301581A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101034943A (en) * | 2006-03-09 | 2007-09-12 | 上海欣民通信技术有限公司 | WCDMA optical fiber direct amplifying station |
| CN101262457A (en) * | 2007-03-07 | 2008-09-10 | 中兴通讯股份有限公司 | A time division duplex linear power amplification module with digital pre-distortion technology |
| CN201243292Y (en) * | 2008-07-11 | 2009-05-20 | 福建三元达通讯股份有限公司 | Digital frequency selection optical fiber station |
| CN201248143Y (en) * | 2008-08-29 | 2009-05-27 | 福建三元达通讯股份有限公司 | Pressing belt ultra-far shrouding system |
| CN201528431U (en) * | 2009-09-23 | 2010-07-14 | 京信通信系统（中国）有限公司 | CDMA digital optical fiber repeater system based on far-end integral module |
| CN201805424U (en) * | 2010-08-18 | 2011-04-20 | 奥维通信股份有限公司 | Digital predistortion repeater for mobile multimedia broadcast |
| CN102412855A (en) * | 2010-09-20 | 2012-04-11 | 大唐移动通信设备有限公司 | Determination method of impedance match situation and equipment |
| CN101951701A (en) * | 2010-10-19 | 2011-01-19 | 京信通信系统（中国）有限公司 | DPD-based far-end machine and repeater system |
| WO2016038336A1 (en) * | 2014-09-12 | 2016-03-17 | Bae Systems Plc | Signal processing apparatus |
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Application publication date: 20170104 |
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| RJ01 | Rejection of invention patent application after publication |