CN106357340B - The interlinkage transmission method of optical fiber repeater - Google Patents
The interlinkage transmission method of optical fiber repeater Download PDFInfo
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- CN106357340B CN106357340B CN201610856381.2A CN201610856381A CN106357340B CN 106357340 B CN106357340 B CN 106357340B CN 201610856381 A CN201610856381 A CN 201610856381A CN 106357340 B CN106357340 B CN 106357340B
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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
Abstract
The present invention describes a kind of interlinkage transmission method of optical fiber repeater, include by power supply, microprocessor, antenna-feeder system, wireless receiver, wireless transmitter, outside line optical fiber, combiner, power splitter, it include the adaptive multiplexer of analog-digital converter, it include the time-division demultiplexer of digital analog converter, optical branching device, the linked fiber optic repeater that light transmission transmitter and light transmission receiver are constituted, wireless communications relay transmission service can be provided for the various types of wireless communication systems user being in Special section and tunnel, meet to reduce and uses number of fibers, it is interfered with each other between reduction system, light relay transmission and system interval are improved from degree, and have the characteristics that can be suitably used for carrying out relay transmission to various wireless communication system.
Description
Technical field
The present invention is wireless communications relay transmission technology, is suitable for passing the relaying of the wireless communication system of feeble field section
It is defeated, belong to wireless communication technology field.
Background technology
In current wireless system, there are various wireless communication system, as GSM, WCDMA, TD-SCDAM,
The wireless communication systems such as CDMA2000, intercommunication private network have above-mentioned wireless communication system respectively special in existing technology
Optical fiber repeater as trunking, but in some Special sections and tunnel, since the network of each wireless communication system is advised
Draw inconsistent, the base station location of each system, number of fibers limitation, the number of links of optical fiber repeater, optical transport routing length
And user distribution it is inconsistent, interfere with each other and system interval the influences of factors such as requires in that region cannot be by institute from degree
Some trunkings are all installed on the relaying demand for wherein removing to meet each wireless communication system, therefore existing optical fiber repeater
The trunking traffic requirement to each wireless communication system user in such region cannot be met；The comparison skill close with the present invention
Art is：The patent No. 2010100280127, linked fiber optic repeater method for transmitting signals and linked fiber optic repeater, wherein
Some technical solutions to solve the above problems are described, but in practical applications, the technology is using analog signal in optical transport system
It is transmitted in system, this makes the signal of interchannel be prone to interfere with each other, and the transmission range in optical transmission system
It is relatively close, it cannot effectively realize the purpose of invention.
Invention content
In view of the foregoing, the purpose of the present invention is to provide a kind of interlinkage transmission method of optical fiber repeater and links
Formula optical fiber repeater so that optical fiber repeater can be that the various types of wireless communication systems user being in Special section and tunnel carries
It transmits and services for wireless communications relay, meet and reduce using system interval is interfered with each other and met between number of fibers, reduction system
From requirements such as degree, the long distance optic transmission relaying between optical fiber repeater can be realized when there are multiple optical fiber repeaters to link,
And have the characteristics that can be suitably used for carrying out relay transmission to various wireless communication system；
In order to achieve the above objectives, the present invention introduces a kind of interlinkage transmission method of optical fiber repeater, includes power supply, micro-
Processor, multiple wireless receivers, multiple wireless transmitters, outside line optical fiber, combiner, power splitter, includes mould at antenna-feeder system
The adaptive multiplexer of number converter, the time-division demultiplexer for including digital analog converter, optical branching device, light transmission transmitter and light
Transmit receiver, which is characterized in that working method is controlled using following signals transmission and microprocessor：
(1) it by wireless signal frequency conversion that each wireless receiver receives and is filtered into the reception carrier of different frequency and becomes
Frequency signal is separately input to each input channel of adaptive multiplexer, and is controlled respectively by microprocessor and adjust connecing for each output
Record the amplitude-frequency and time-delay characteristics parameter of frequency frequency variation signal；
(2) will light transmission receiver output signal and adaptive multiplexer output signal combining after be input to the time-division and demultiplex
It is demultiplexed with the input terminal of device, and is exported by each output end of each time-division demultiplexer, then respectively by each wireless
Transmitter frequency conversion and being filtered is launched again as the CF signal of different frequency；
(3) above-mentioned each reception carrier frequency variation signal and subcarrier transmission control device modulation output signal processed is reconciled to be combined
It is digitized afterwards by analog-digital converter and coded treatment, light is then input to by a transmission channel of adaptive multiplexer and is passed
Defeated transmitter is converted to optical signal output；
(4) by after the input optical signal branch of a certain outside line optical fiber, optical signal transmission arrives light transmission receiver all the way
Optical signal input, another way optical signal are combined after being amplified by optical signal amplifier with the output optical signal of light transmission transmitter
It is transferred to another outside line optical fiber again；
(5) microprocessor carries out amplitude-frequency to each road signal for being input to each wireless transmitter input terminal and time-delay characteristics are joined
Several testing results carries out coding and obtains each transmitting input signal characteristics parameter code and corresponding systematic code, address code, and will
The transmitting input signal characteristics parameter code obtained and corresponding systematic code, address code reconcile device processed by subcarrier transmission control
After modulation, the outside linear light fibre of optical transmission system is input to by a transmission channel of adaptive multiplexer and is sent；Microprocessor connects
The transmitting output signal characteristics of device demodulation output processed are harvested to be received and reconciled by subcarrier transmission control by optical transmission system
Parameter code and corresponding systematic code, address code；
(6) microprocessor inputs each transmitting input signal characteristics parameter code of acquisition and the transmitting of the correspondence system of setting
Signal operating reference characterisitic parameter code is compared and judges, is exported to the reception of corresponding wireless receiver according to judgement situation
The amplitude-frequency and time-delay characteristics parameter of signal adjust accordingly.
To realize that the interlinkage transmission method of above-mentioned optical fiber repeater, the present invention also introduce a kind of interlinkage optical fiber direct amplification
It stands, includes power supply, microprocessor, antenna-feeder system, multiple wireless receivers, multiple wireless transmitters, outside line optical fiber, combining
Device, power splitter, optical branching device, light transmission transmitter and light transmission receiver, which is characterized in that there are multiple characteristics of signals parameters to examine
Survey device, multiple programmable signal amplitude-frequencies and time-delay characteristics parameter adjuster, one include analog-digital converter adaptive multiplexer,
One wireless reception of signals power splitter, a wireless transmission signal combiner, one include to demultiplex time-division of digital analog converter
With device, subcarrier transmission conciliation device processed, a transmission direction optical branching device, two outside line optical branching devices, two optical signals
Amplify transmission branch device, two optical signal amplifiers, the reception signal output end of each wireless receiver is compiled with each respectively
Journey signal amplitude-frequency and the signal input part of time-delay characteristics parameter adjuster are connected, each programmable signal amplitude-frequency and time-delay characteristics
The signal output end and subcarrier transmission of parameter adjuster reconcile the modulated signal output end of device processed respectively with include that modulus turns
Each branch input of the adaptive multiplexer of parallel operation is connected, and includes the combining output of the adaptive multiplexer of analog-digital converter
End is connected with the input terminal of wireless reception of signals power splitter, and a work(of wireless reception of signals power splitter divides output end to be passed with light
The electric signal input end of defeated transmitter is connected, another work(of wireless receiving power splitter divides output end to be closed with wireless transmission signal
One input terminal of road device is connected, another input terminal of wireless transmission signal combiner and the electric signal of light transmission receiver
Output end is connected, the combining output end of wireless transmission signal combiner and the time-division demultiplexer for including digital analog converter
Input terminal is connected, include the time-division demultiplexer of digital analog converter each work(divide output end respectively with each wireless transmission
The transmission signal input part of machine, the signal input part of each characteristics of signals parametric detector and subcarrier transmission reconcile the load of device processed
Frequency signal input part is connected, and the combining end of light transmitting-receiving branch combiner is connected with the combining end of transmission direction optical branching device,
The branch end of transmission direction optical branching device is connected from a branch end of different outside line optical branching devices respectively, each outer linear light
One branch end of splitter is connected from the combining end of different optical signal amplification transmission branch devices respectively, and optical signal amplification passes
One branch end of defeated splitter is connected with the input terminal of an optical transport amplifier, the output end of the optical transport amplifier with
One branch end of another optical signal amplification transmission branch device is connected, the combining end of each outside line optical branching device respectively with not
With outside line optical fiber connection, the detection signal output end of each characteristics of signals parametric detector, each programmable signal amplitude-frequency and
The programmable signal input terminal and subcarrier transmission of time-delay characteristics parameter adjuster reconcile the data input/output terminal difference of device processed
It is connected with the control input/output terminal of microprocessor；
The working principle and beneficial effect of the present invention
Corresponding systematic code and address code are all programmed with to each wireless receiver for being operated in different frequency range and standard, respectively
A different frequency range and the wireless receiver of standard of being operated in will export after the wireless signal received, by being set in wireless receiver
The processing of low-converter, filter and the upconverter docking collection of letters number set, improves system interval from degree index, improves each system
Isolation between system, and exported to each frequency conversion and after filtering by programmable signal amplitude-frequency and time-delay characteristics parameter adjuster
Wireless signal carries out characterisitic parameter adjustment, each output signal that is adjusted that treated by include analog-digital converter time-division
After multiplexer combining, it is respectively transmitted to light transmission transmitter to be changed into optical signal and be transferred to include that digital-to-analogue turns by optical branching device
The time-division demultiplexer wireless signal transmission combiner of parallel operation, the signal for being transferred to wireless signal transmission combiner are passed with by optical fiber
By including that the time-division demultiplexer of digital analog converter is converted to each analog signal after the electric signal combining of defeated receiver output
It is respectively outputted to each wireless transmitter for being operated in different frequency range and standard, passes through the down coversion being arranged in wireless transmitter
Device, filter and upconverter improve system interval from degree index, improve the isolation between each system, then by each wireless hair
Machine is penetrated respectively to launch input signal by wireless transmission method；The optical signals optical branching device inputted by outside line optical fiber
It is allocated processing, is combined with the optical signal of light transmission transmitter output after a routing image intensifer amplification, then to another outside line
Optical fiber transmits, and another way is received and converted to corresponding electric signal output by light transmission receiver, is input to light transmission transmitter
Electric signal corresponding optical signal is converted to from light transmission transmitter after processing is allocated to each external optical fiber from splitter
Optical signal is sent, in transmission process, microprocessor will enter into each wireless transmitter for being operated in different frequency range and standard
In reception signal characteristic parameter be detected, such as amplitude, Frequency Response, delay, and these parameters are encoded to obtain
Signal parameter code and corresponding systematic code, address code are received, reconciling device and optical transmission system processed by subcarrier transmission control will
The reception signal parameter code and corresponding systematic code, address code are transferred to other linked fiber optic repeaters, are carried also by pair
Wave transmission control reconciles device and optical transmission system processed and receives the reception signal parameter that other linked fiber optic repeaters are sent
Code and corresponding systematic code, address code, by the reception signal parameter code and corresponding systematic code of these acquisitions, address code and setting
Each transmitting input signal work amplitude-frequency and delay etc. be compared, judge and handle with reference to characterisitic parameter code, according to processing
Instruction is by realizing to the defeated of corresponding wireless receiver the adjustment of programmable signal amplitude-frequency and time-delay characteristics parameter adjuster
Go out the purpose that characteristics of signals parameter is adjusted, to meet the conditions such as transmission required amplitude, spectral characteristic, delay；Pass through
Include the adaptive multiplexer of analog-digital converter, include digital analog converter time-division demultiplexer combining and branch transmission at
Reason can reduce optical signal interfering with each other in mixed transfer；The present invention is can be seen that by the operation principle of above-mentioned introduction
The isolation between system can be improved, is interfered with each other between reduction system, in optical transmission system, there is mixed transfer to optical signal
And by formula amplifying power, and there is the ability of adjust automatically to wireless receiving output signal characteristic parameter, therefore can adapt to
The relay transmission demand of different system and transmission range.
Description of the drawings
Fig. 1 is the electrical schematic diagram of the linked fiber optic repeater of one embodiment of the invention；
Fig. 2 is the main working process figure of the linked fiber optic repeater of one embodiment of the invention；
Fig. 3 is the electrical schematic diagram of the optical carrier source controller of the linked fiber optic repeater of one embodiment of the invention；
Fig. 4 is the another form of electrical schematic diagram of the linked fiber optic repeater of the present invention；
It is identical function element and module that identical part is numbered in each figure.
Specific implementation mode
Illustrate the embodiment of the present invention by taking attached drawing as an example below：
Fig. 1 is the linked fiber optic repeater electrical schematic diagram of one embodiment of the invention, by power supply, microprocessor, antenna feeder system
System, multiple wireless receivers, multiple wireless transmitters, optical fiber, combiner, power splitter, optical branching device, light transmission transmitter and light
Transmit the compositions such as receiver, it is characterised in that have multiple characteristics of signals parametric detectors, multiple programmable signal amplitude-frequencies and delay
Characterisitic parameter adjuster, one include the adaptive multiplexer of analog-digital converter, a wireless reception of signals power splitter, a nothing
Line transmitting signal combiner, one include that the time-division demultiplexer of digital analog converter, subcarrier transmission reconcile device processed, one
A transmission direction optical branching device, two outside line optical branching devices, two optical signal amplification transmission branch devices, two optical signal amplifications
Device, in Fig. 1：1-1~1-n is wireless receiver, using conventional wireless receivers, and low-converter, filtering is arranged wherein
Device and upconverter meet system interval from degree index by filter therein offer；2 be microprocessor, using Conventional monolithic
Machine system；3-1~3-n is wireless transmitter, using Conventional wireless transmitters, and low-converter, filter is arranged wherein
Wave device and upconverter meet system interval from degree index by filter therein offer；4-1~4-n is programmable signal
Amplitude-frequency and timer are realized using compositions such as programmable attenuator, programmable equalizer and programmable delayers in Wei Chu
Programmable adjustment is carried out to parameters such as the intensity of output signal, amplitude-frequency equilibrium and delay features under reason device control；5-1~5-n
For characteristics of signals parametric detector, examined using there are the characteristic parameters such as the intensity to its input signal, amplitude-frequency equilibrium and delay
It surveys and the module and circuit exported is constituted；6 be include the adaptive multiplexer of analog-digital converter its input be multichannel analog signals,
Output is to pass through the digital signal after time division multiplexing；7 reconcile device processed for subcarrier transmission control, using conventional modem；8
For include digital analog converter time-division demultiplexer its input be combining digital signal, export for by when decomposition multiplex after
Multichannel analog signals；9 be wireless reception of signals power splitter, using conventional power splitter；10 be light transmission transmitter, using light modulation
Device module composition；11 be light transmission receiver, using optical demodulator module composition；12 be wireless transmission signal combiner, is used
Conventional power splitter；13 be optical signal transceiver branch combiner, using conventional optical branching device；14 be transmission direction optical branching device, is adopted
With conventional optical branching device；15,21 be external outside line optical fiber, using common communications optical fiber；16,20 be outside line optical branching device, is used
Conventional optical branching device；17,19 be optical signal amplification transmission branch device, using conventional optical branching device；18,22 be optical signal amplification
Device is composed using function modules such as opto-electronic conversion-electric signal amplification-electro-optic conversions；The reception of each wireless receiver
Signal output end is connected with the signal input part of each programmable signal amplitude-frequency and time-delay characteristics parameter adjuster respectively, each
Programmable signal amplitude-frequency and the signal output end and subcarrier transmission of time-delay characteristics parameter adjuster reconcile the modulated signal of device processed
Output end is connected with each signal input part for the adaptive multiplexer for including analog-digital converter respectively, includes analog-to-digital conversion
The combining output end of the adaptive multiplexer of device is connected with the input terminal of wireless reception of signals power splitter, wireless reception of signals work(point
One work(of device divides output end to be connected with the electric signal input end of light transmission transmitter, another work(of wireless receiving power splitter
Output end is divided to be connected with an input terminal of wireless transmission signal combiner, another input of wireless transmission signal combiner
End is connected with the electrical signal of light transmission receiver, the combining output end of wireless transmission signal combiner and include number
The input terminal of the time-division demultiplexer of mode converter is connected, and includes each signal of the time-division demultiplexer of digital analog converter
Output end respectively with each wireless transmitter transmission signal input part, each characteristics of signals parametric detector signal input part
And the CF signal input terminal of subcarrier transmission conciliation device processed is connected, light receives and dispatches combining end and the transmission direction of branch's combiner
The combining end of optical branching device is connected, the branch end of transmission direction optical branching device one from different outside line optical branching devices respectively
Branch end is connected, a branch end of each outside line optical branching device respectively from the conjunction of different optical signal amplification transmission branch devices
Terminal is connected, and a branch end of optical signal amplification transmission branch device is connected with the input terminal of an optical transport amplifier,
The output end of the optical transport amplifier is connected with a branch end of another optical signal amplification transmission branch device, each outside line
The combining end of optical branching device is connected from different outside line optical fiber respectively, the detection signal output of each characteristics of signals parametric detector
The programmable signal input terminal and subcarrier transmission at end, each programmable signal amplitude-frequency and time-delay characteristics parameter adjuster reconcile system
The data input/output terminal of device is connected with the control input/output terminal of microprocessor respectively；
Fig. 2 is the main program figure of the microprocessor of the linked fiber optic repeater of one embodiment of the invention；Wherein main work
It is as flow：
(1) microprocessor system starts, initializes；The corresponding systematic code of each wireless receiver, address code are set；Setting
Transmitting input signal work amplitude-frequency and delay etc. corresponding to each systematic code and address code refer to characterisitic parameter code；Setting is local
Optical carrier generator pro-jobs grade code；
(2) by the amplitude-frequency of each wireless transmitter input signal exported by characteristics of signals parametric detector and delay etc.
The detection Signal coding of characteristic parameter obtains each transmitting input signal characteristics parameter code and correspondence system code, address code, passes through
Device modulation processed is reconciled in subcarrier transmission control and optical transmission system sends the transmitting input signal characteristics to other optical fiber repeaters
Parameter code and corresponding systematic code, address code；Receive obtain by other optical fiber repeaters by optical transmission system transmit input and
The transmitting input signal condition code and corresponding systematic code, address code of device demodulation output processed are reconciled in subcarrier transmission control；
(3) transmitting of the transmitting input signal characteristics parameter code of acquisition and the correspondence system code of setting, address code is inputted
Signal operating reference characterisitic parameter code carries out comparison judgement, meets and then enters above-mentioned (2), does not meet, generate process instruction and go forward side by side
Enter following (4)；
(4) corresponding programmable signal amplitude-frequency and time-delay characteristics parameter adjuster are adjusted according to process instruction, it is real
Now adjust the wireless receiver output signal characteristic parameter corresponding to systematic code；It is then return to above-mentioned (2)；
The groundwork method of the interlinkage transmission method of the optical fiber repeater of one embodiment of the invention is as follows：
(1) each wireless receiver by the wireless signal frequency conversion of reception and be filtered into different frequency reception carrier become
Frequency signal is exported, and adjusts each output by controlling programmable signal amplitude-frequency and timer respectively by microprocessor
Reception carrier frequency variation signal amplitude-frequency and delay parameter；
(2) electric signal that above-mentioned each reception carrier frequency variation signal and light transmission receiver export is believed by wireless transmission
After number input combiner combining, by the time-division demultiplexer that includes digital analog converter, branch is assigned to each wireless transmission respectively
Machine is launched by each wireless transmitter frequency conversion and being filtered as the CF signal of different frequency again；
(3) above-mentioned each reception carrier frequency variation signal and subcarrier transmission control device modulation output signal processed is reconciled to be combined
Optical signal output is converted to by light transmission transmitter afterwards；
(4) after by the input optical signal of a certain outside line optical fiber by outside line optical branching device branch, optical signal transmission arrives all the way
The optical signal input of light transmission receiver carries out reception processing, another way optical signal amplified by optical transport amplifier after with light
It is transferred to another outside line optical fiber after the optical signals outside line optical branching device combining of transmission transmitter；
As specified above and diagram configures each function module, component, connection related device module, by above-mentioned work
Flow works out SCM program and the implementation of the present invention can be completed in the working method of the invention introduced.
The interlinkage transmission method of optical fiber repeater of the present invention can also be it is characterized in that, each reception carries
Frequency frequency variation signal, optical transport receive the electric signal of output and subcarrier transmission control is reconciled after device modulation output signal processed is combined and turned
It is changed to the outside linear light fibre of optical signal to send, can make the optical signal in transmission line interferes with each other to decrease in this way,
Convenient for the implementation of the present invention.
Linked fiber optic repeater of the present invention can also be to include wireless receiver, microprocessor, wireless hair
Penetrate machine, programmable signal amplitude-frequency and timer, characteristics of signals parametric detector, include analog-digital converter time division multiplexing
Device, subcarrier transmission control reconcile device processed, the time-division demultiplexer for including digital analog converter, wireless reception of signals power splitter,
Light transmission transmitter, light transmission receiver, wireless transmission signal combiner (component shown in label 1~12 in attached drawing 1,4), it is special
Sign is, there are one wireless reception of signals optical transport power splitter, an optical transport receives signal combiner, and two optical transports receive
Signal power divider, two optical transports send combiner, as shown in Fig. 4, wherein：33 be wireless reception of signals optical transport work(point
Device, 34 receive signal combiner for optical transport, and 35,42 be light transmission receiver, and 36,41 receive signal power divider for optical transport,
37,40 combiner is sent for optical transport, 38,39 be light transmission transmitter, the function element and module and Fig. 1 that other numbers indicate
In it is identical, a work(of wireless reception of signals power splitter therein divides output end and wireless reception of signals optical transport power splitter
Input terminal is connected, and the output end of wireless reception of signals optical transport power splitter sends signal combiner from different optical transports respectively
A branch input be connected, optical transport sends another branch input and the reception of optical transport of signal combiner
One branch's output end of signal power divider is connected, and optical transport sends combining end and the light transmission transmitter of signal combiner
Electric signal input end is connected, and the branch input that optical transport receives signal combiner receives signal from different optical transports respectively
One branch's output end of power splitter is connected, and optical transport receives combining end and the wireless transmission signal combiner of signal combiner
A branch input be connected, the electrical signal of light transmission receiver receives the input of signal power divider with optical transport
End is connected, and the optical signal input of light transmission receiver and the light signal output end of light transmission transmitter divide with outer linear light respectively
The different branch ends of prop are connected, and can make the optical signal in transmission line interferes with each other to decrease in this way,
Convenient for the implementation of the present invention.
The present invention can also be in linked fiber optic repeater include analog-digital converter adaptive multiplexer and packet
Each branch end of time-division demultiplexer containing digital analog converter is serially connected with the bandpass filter of different operating frequency range, passes through band
The processing of bandpass filter can make the present invention improve isolation between each wireless communication system, reduce inter-system interference, make this
Invention is provided preferably using index and widely application.
Linked fiber optic repeater of the present invention can also be it is characterized in that, there is multiple transmission direction optical branch
It is multi-direction external can so that the present invention has in this way for device, multiple outside line optical branching devices, multiple optical signal amplification transmission branch devices
The ability of outside line optical fiber has enabled the invention to wider application.
Linked fiber optic repeater of the present invention can also be the work it is characterized in that, each wireless receiver
Status signal output is connected with one group of control signal input of microprocessor respectively, and microprocessor is to each of acquisition
Transmitting input signal characteristics parameter code is compared with the correspondence system of setting transmitting input signal operating reference characterisitic parameter code
And judgement, it is executed to corresponding wireless receiver according to the operating condition of judgement situation and corresponding wireless receiver
The amplitude-frequency and time-delay characteristics parameter for receiving output signal adjust accordingly, and control function of the invention can be made more by doing so
It is accurate, improves the using effect of the present invention.
Invention describes a kind of interlinkage transmission methods of optical fiber repeater, include power supply, microprocessor, antenna feeder system
System, wireless receiver, wireless transmitter, outside line optical fiber, combiner, power splitter, the adaptive multiplexer for including analog-digital converter,
It include the chain that time-division demultiplexer, optical branching device, light transmission transmitter and the light transmission receiver of digital analog converter are constituted
Formula optical fiber repeater is connect, can be provided in wireless communication for the various types of wireless communication systems user being in Special section and tunnel
After transmission service, meet reduce using interfered with each other between number of fibers, reduction system, improve light relay transmission and system interval from
Degree, and have the characteristics that can be suitably used for carrying out relay transmission to various wireless communication system.
Claims (2)
1. a kind of interlinkage transmission method of optical fiber repeater, includes power supply, microprocessor, antenna-feeder system, multiple wirelessly connects
Receipts machine multiple wireless transmitters, outside line optical fiber, combiner, power splitter, the adaptive multiplexer for including analog-digital converter, includes
There are time-division demultiplexer, optical branching device, light transmission transmitter and the light transmission receiver of digital analog converter, which is characterized in that adopt
Working method is controlled with following signal transmission and microprocessor：
(1) it by wireless signal frequency conversion that each wireless receiver receives and is filtered into the reception carrier frequency conversion of different frequency and believes
It number is separately input to each input channel of adaptive multiplexer, and is controlled respectively by microprocessor and to be adjusted the reception of each output and carry
The amplitude-frequency and time-delay characteristics parameter of frequency frequency variation signal；
(2) time-division demultiplexer will be input to after the output signal combining of the signal of light transmission receiver output and adaptive multiplexer
Input terminal demultiplexed, and exported by each output end of each time-division demultiplexer, then respectively by each wireless transmission
Machine frequency conversion and being filtered is launched again as the CF signal of different frequency；
(3) lead to after above-mentioned each reception carrier frequency variation signal and subcarrier transmission control being reconciled device modulation output signal combining processed
It crosses analog-digital converter to be digitized and coded treatment, optical transport hair is then input to by a transmission channel of adaptive multiplexer
Device is sent to be converted to optical signal output；
(4) by after the input optical signal branch of a certain outside line optical fiber, the light of optical signal transmission to light transmission receiver is believed all the way
Number input terminal, another way optical signal pass after being amplified by optical signal amplifier with the output optical signal combining of light transmission transmitter again
Defeated to another outside line optical fiber；
(5) microprocessor carries out amplitude-frequency and time-delay characteristics parameter to each road signal for being input to each wireless transmitter input terminal
Testing result carries out coding and obtains each transmitting input signal characteristics parameter code and corresponding systematic code, address code, and will obtain
The transmitting input signal characteristics parameter code and corresponding systematic code, address code pass through subcarrier transmission control and reconcile device processed modulation
Afterwards, the outside linear light fibre of optical transmission system is input to by a transmission channel of adaptive multiplexer to send；Microprocessor reception obtains
It obtains and is received by optical transmission system and passed through the transmitting output signal characteristics parameter that subcarrier transmission control conciliation device demodulation processed exports
Code and corresponding systematic code, address code；
(6) each transmitting input signal characteristics parameter code of acquisition and the correspondence system of setting are emitted input signal by microprocessor
Operating reference characterisitic parameter code is compared and judges, according to judgement situation to the reception output signal of corresponding wireless receiver
Amplitude-frequency and time-delay characteristics parameter adjust accordingly.
2. the interlinkage transmission method of optical fiber repeater as described in claim 1, it is characterised in that become each reception carrier
Frequency signal, the electric signal of light transmission receiver output and subcarrier transmission control are converted after reconciling device modulation output signal combining processed
It is sent for the outside linear light fibre of optical signal.
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| JP2003188831A (en) * | 2001-12-20 | 2003-07-04 | Fujitsu Ltd | Optical transmission system and optical repeater |
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|---|---|---|---|---|
| CN101465697A (en) * | 2009-01-04 | 2009-06-24 | 耿直 | Optical fiber direct amplification and frequency conversion repeater and working method |
| CN101771472A (en) * | 2010-01-05 | 2010-07-07 | 耿直 | Link-type optical fiber repeater signal transmission method and link-type optical fiber repeater |
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| CN106357340A (en) | 2017-01-25 |
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