CN101938307B - Digital junction transmission method and multi-path digital optical fiber repeater - Google Patents
Digital junction transmission method and multi-path digital optical fiber repeater Download PDFInfo
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Abstract
The one that the present invention introduces is by power supply, antenna-feedback system, multiple wireless receiver, multiple transmitting set, optical transport receive-transmit system, microprocessor, analog to digital converter, digital to analog converter, encoder, decoder, digital channel multiplexer, digital channel demodulation multiplexer, the digital junction transmission method that power splitter and mixer realize and multi-path digital optical fiber repeater, have and can realize the relay transmission of any point to multiple access, the relay transmission to multiple wireless system can be used for, can long-distance transmission be carried out to light signal and amplify process, and the feature reduced as much as possible because amplifying the noise superposition brought.
Description
Technical field
The present invention is wireless communications relay transmission technology, is applicable to the relay transmission of wireless communication system, belongs to wireless communication technology field.
Background technology
In the optical-fiber wireless relay system of application at present, extensive utilization optical fiber direct amplification relaying technique, its system configuration normally adopts the form of the composition being connected one or more remote termination by a near-end machine by fibre circuit, mutual wireless communications relay forwarding capability can be realized between near-end machine and remote termination, its method of work is that wireless reception of signals is converted to light signal and restores into the signal of telecommunication by Optical Fiber Transmission to remote termination and send with identical frequency process by near-end machine, wireless reception of signals is converted to light signal and restores into the signal of telecommunication by Optical Fiber Transmission to near-end machine and send with identical frequency process by remote termination, its subject matter existed is, for the relay system that multiple optical fiber repeater is formed, its main operation modes is: a bit (near-end machine) is to multiple access (remote termination), or multiple access (remote termination) is to the transmission means of a bit (near-end machine), the work functions of a bit (near-end machine) and multiple access (remote termination) is wherein stationary state, power and energy can not be carried out, this mode of operation is feasible and extensive use for there being center wireless system, as GSM, CDMA, the wireless systems such as WCDMA, for non-stop layer wireless system, as joining common-frequency simplex or alien frequencies simplex radio intercom system, because the functional status of its near-end machine and remote termination is different and change with the position of the promoter of signal transmission, namely the relay transmission function of any point to multiple access is needed, in addition, in practical application, needing can to the relay transmission of multiple wireless system, in some applications, distance between optical fiber repeater is far, need to carry out long-distance transmission to the light signal transmitted each other and amplify process, and require to reduce as much as possible because amplifying the noise superposition brought.
Summary of the invention
In view of the foregoing, the object of the present invention is to provide a kind of digital junction transmission method and multi-path digital optical fiber repeater, this optical fiber repeater is had can realize any point to the relay transmission of multiple access, relay transmission to multiple wireless system can be used for, can long-distance transmission be carried out to the light signal transmitted each other and amplify process, and reduce the feature because amplifying the noise superposition brought as much as possible.
For achieving the above object, the present invention introduces a kind of digital junction transmission method of multi-path digital optical fiber repeater, it is characterized in that multi-path digital optical fiber repeater is selected to adopt following method of work:
(1) reception of each wireless receiver output signal is carried out analog to digital conversion respectively and obtain receiving digital signals, each receiving digital signals is carried out respectively coding to obtain receiving digitally encoded signal, each is received digitally encoded signal and carry out channel multiplexing process generation reception conjunction railway digital signal;
(2) in the light signal sending time slots of multi-path digital optical fiber repeater, the reception that this multi-path digital optical fiber repeater generates is closed railway digital signal and is carried out wireless forwarding by this multi-path digital optical fiber repeater, and this reception conjunction railway digital signal is issued other the multi-path digital optical fiber repeater be connected on left side and right side fibre circuit by optical transmission system, in the light signal sending time slots of this multi-path digital optical fiber repeater, this multi-path digital optical fiber repeater does not receive the light signal in optical transmission system;
(3) in the light signal receiving slot of multi-path digital optical fiber repeater, this multi-path digital optical fiber repeater receives the light signal being connected to other multi-path digital optical fiber repeaters on a certain side optical fibers circuit and being sent by optical transmission system, in the light signal receiving slot of this multi-path digital optical fiber repeater, this multi-path digital optical fiber repeater does not send by optical transmission system the reception generated by this multi-path digital optical fiber repeater and closes railway digital signal;
(4) in the light signal receiving slot of multi-path digital optical fiber repeater, this multi-path digital optical fiber repeater is reduced to primary reception conjunction railway digital signal by other multi-path digital optical fiber repeaters on a certain side optical fibers circuit by the light signal that optical transmission system sends by what received by optical transmission system, railway digital signal is closed in this primary reception sent to other multi-path digital optical fiber repeaters on opposite side fibre circuit by optical transmission system, simultaneously, also this primary reception is closed railway digital signal and carry out each primary reception digitally encoded signal that channel demultiplexing is reduced to correspondence, it is each primary reception digital signal that this each primary reception digitally encoded signal is distinguished decoded back, this each primary reception digital signal is carried out respectively digital-to-analogue conversion and be reduced to corresponding primary reception output signal, this each primary reception output signal is input to corresponding transmitting set respectively and carries out wireless transmission.
For realizing method of work of the present invention, the present invention also introduces a kind of multi-path digital optical fiber repeater, include by power supply, antenna-feedback system, multiple wireless receiver, multiple transmitting set, microprocessor, a set of left side optical transport receive-transmit system and a set of right side optical transport receive-transmit system, it is characterized in that there is multiple analog to digital converter, multiple digital to analog converter, multiple encoder, multiple decoder, a digital channel multiplexer, a digital channel demultiplexer, wireless receiving three branch power splitter, a wireless transmission three branch mixer, a left side transmission Received signal strength power splitter, a right side transmission Received signal strength power splitter, a left side transmission sends signal combiner, a right side transmission sends signal combiner, the input end of analog signal of each analog to digital converter is connected with the Received signal strength output of each wireless receiver respectively, the digital signal output end of each analog to digital converter is connected with the digital signal input end of each encoder respectively, the digital signal output end of each encoder is connected with each shunt digital signal input end of digital channel multiplexer respectively, the conjunction railway digital signal output part of digital channel multiplexer is connected with the input of wireless receiving three branch power splitter, three merits of wireless receiving three branch power splitter divide output respectively with wireless transmission three branch mixer, the branch input that left side transmission sends signal combiner and right side transmission transmission signal combiner is connected, the conjunction road output that left side transmission sends signal combiner is connected with the electric signal input end of the transmission optical-electrical converter of left side optical transmission system, the conjunction road output that right side transmission sends signal combiner is connected with the electric signal input end of the transmission optical-electrical converter of right side optical transmission system, the electrical signal of the reception optical-electrical converter of left side optical transmission system is connected with the input that Received signal strength power splitter is transmitted in left side, the merit of left side transmission Received signal strength power splitter is divided output to transmit the branch input sending signal combiner respectively with wireless transmission three branch's mixer and right side and is connected, the electrical signal of the reception optical-electrical converter of right side optical transmission system is connected with the input that Received signal strength power splitter is transmitted on right side, the merit of right side transmission Received signal strength power splitter is divided output to transmit the branch input sending signal combiner respectively with wireless transmission three branch's mixer and left side and is connected, the conjunction road signal output part of wireless transmission three branch mixer is connected with the conjunction railway digital signal input part of digital channel demodulation multiplexer, each shunt digital signal output end of digital channel demodulation multiplexer is connected with the digital signal input end of each decoder respectively, the digital signal output end of each decoder is connected with the digital signal input end of each digital to analog converter respectively, the analog signal output of each digital to analog converter is connected with the input that transmits of each transmitting set respectively.
Operation principle of the present invention is:
When radio carrier frequency signal launched by the mobile wireless transceiver of certain non-stop layer wireless system in the multi-path digital optical fiber repeater area of coverage, usually have certain multi-path digital optical fiber repeater and receive this CF signal, reception carrier signal is converted to intermediate-freuqncy signal or audio signal output by the multi-path digital optical fiber repeater receiving this CF signal, the intermediate-freuqncy signal export the reception of each wireless receiver or audio signal are carried out analog to digital conversion by analog to digital converter and are obtained receiving digital signals, the receiving digital signals exported by each analog to digital converter carries out coding respectively by encoder and obtains receiving digitally encoded signal, each reception digitally encoded signal is carried out channel multiplexing process by digital channel multiplexer and synthesizes reception conjunction railway digital signal, in the light signal sending time slots of multi-path digital optical fiber repeater, the reception that this multi-path digital optical fiber repeater generates is closed railway digital signal and is carried out wireless forwarding by this multi-path digital optical fiber repeater, and this reception conjunction railway digital signal is issued other the multi-path digital optical fiber repeater be connected on left side and right side fibre circuit by optical transmission system, in the light signal sending time slots of this multi-path digital optical fiber repeater, this multi-path digital optical fiber repeater does not receive the light signal in optical transmission system, and mode of operation is now the broadcast transmission mode of a Point to mang address, in the light signal receiving slot of multi-path digital optical fiber repeater, this multi-path digital optical fiber repeater does not send by optical transmission system the reception generated by this multi-path digital optical fiber repeater and closes railway digital signal, but this multi-path digital optical fiber repeater will be received by optical transmission system, be reduced to primary reception by other multi-path digital optical fiber repeaters on a certain side optical fibers circuit by the light signal that optical transmission system sends and close railway digital signal, railway digital signal is closed in this primary reception sent to other multi-path digital optical fiber repeaters on opposite side fibre circuit by optical transmission system, simultaneously, also railway digital signal is closed in this primary reception and be reduced to each corresponding primary reception digitally encoded signal by digital channel demodulation multiplexer involutory railway digital signal demultiplexing, this each primary reception digitally encoded signal is obtained each primary reception digital signal by decoders decode, this each primary reception digital signal is carried out digital-to-analogue conversion by digital to analog converter and is reduced to corresponding primary reception output signal, this primary reception is input to corresponding transmitting set and carries out wireless transmission, received by other mobile wireless transceivers of adjacent non-stop layer wireless system again, namely the relay transmission completing radio communication connects, in the above-mentioned course of work, owing to have employed Digital Transmission technology to wireless receiving output signal, and in transmitting procedure, the light signal received by side is sent after opposite side has carried out reception again, namely achieve and amplify process, therefore, it is possible to the light signal between realizing the larger optical fiber repeater of spacing carries out long-distance transmissions, the noise superposed is regenerated to the amplification of digital optical signal very low, owing to have employed single work bidirectional broadcast formula transmission mode of light signal, therefore can by the relay transmission method of work of any point initiation to multiple access, therefore the relay transmission that can realize non-stop layer wireless system, owing to wherein additionally using multi-channel Technology, therefore, it is possible to realize the relay transmission to multiple non-stop layer wireless system.
Accompanying drawing explanation
Fig. 1 is the multi-path digital optical fiber repeater System's composition figure of one embodiment of the invention.
Fig. 2 is the multi-path digital optical fiber repeater electricity principle pie graph of one embodiment of the invention
Embodiment
For accompanying drawing, embodiments of the invention are described below.
Fig. 1 indicates the multi-path digital optical fiber repeater System's composition figure of an embodiment, wherein:
1. be radio receiving-transmitting unit, adopt programmable radio Transceiver Module, and enter setting operating state under control of the microprocessor; 2. be digital processing and Signal transmissions distributor, wherein include multiple analog to digital converter, multiple digital to analog converter, multiple encoder, multiple decoder, a digital channel multiplexer, a digital channel demultiplexer, wireless receiving three branch power splitter, a wireless transmission three branch mixer, a left side transmission Received signal strength power splitter, a right side transmission Received signal strength power splitter, a left side transmission sends signal combiner, and a right side transmission sends signal combiner; 3. be optical transport receive-transmit system, wherein include and receive optical-electrical converter, transmission optical-electrical converter, optical branching device.
Fig. 2 is the multi-path digital optical fiber repeater electricity principle pie graph of one embodiment of the invention, wherein:
1-1 ~ 1-n is wireless receiver, adopts conventional wireless receiving module to form; 2-1 ~ 2-n is transmitting set, adopts conventional wireless transmitter module to form; 3-1 ~ 3-n is analog to digital converter, adopts conventional analog to digital conversion circuit or module composition; 4-1 ~ 4-n is digital to analog converter, adopts conventional D/A converting circuit or module composition; 5-1 ~ 5-n is encoder, adopts conventional coding module to form; 6-1 ~ 6-n is decoder, adopts regular decode module composition; 7 is digital channel multiplexer, adopts digital time-division multiplex (MUX) Multiplexing module to form; 8 is digital channel demodulation multiplexer, adopts digital time-division multiplex (MUX) demultiplexing module to form; 9 is wireless receiving three branch power splitter; 10 is wireless transmission three branch mixer; 11-1 is that left side transmission sends signal combiner; 11-2 is that right side transmission sends signal combiner; 12-1 is left side transmission Received signal strength power splitter; 12-2 is right side transmission Received signal strength power splitter; 13-1 is the transmission optical-electrical converter of left side optical transport receive-transmit system; 13-2 is the transmission optical-electrical converter of right side optical transport receive-transmit system; 14-1 is the reception optical-electrical converter of left side optical transmission system; 14-2 is the reception optical-electrical converter of right side optical transmission system; 15-1 is the optical branching device of left side optical transmission system; 15-2 is the optical branching device of right side optical transmission system; 16-1,16-2 are optical fiber.
Multi-path digital optical fiber repeater, under the software control of microprocessor, is selected to adopt following method of work:
(5) reception of each wireless receiver output signal is carried out analog to digital conversion respectively and obtain receiving digital signals, each receiving digital signals is carried out respectively coding to obtain receiving digitally encoded signal, each is received digitally encoded signal and carry out channel multiplexing process generation reception conjunction railway digital signal;
(6) in the light signal sending time slots of multi-path digital optical fiber repeater, the reception that this multi-path digital optical fiber repeater generates is closed railway digital signal and is carried out wireless forwarding by this multi-path digital optical fiber repeater, and this reception conjunction railway digital signal is issued other the multi-path digital optical fiber repeater be connected on left side and right side fibre circuit by optical transmission system, in the light signal sending time slots of this multi-path digital optical fiber repeater, this multi-path digital optical fiber repeater does not receive the light signal in optical transmission system;
(7) in the light signal receiving slot of multi-path digital optical fiber repeater, this multi-path digital optical fiber repeater receives the light signal being connected to other multi-path digital optical fiber repeaters on a certain side optical fibers circuit and being sent by optical transmission system, in the light signal receiving slot of this multi-path digital optical fiber repeater, this multi-path digital optical fiber repeater does not send by optical transmission system the reception generated by this multi-path digital optical fiber repeater and closes railway digital signal;
(1) in the light signal receiving slot of multi-path digital optical fiber repeater, this multi-path digital optical fiber repeater is reduced to primary reception conjunction railway digital signal by other multi-path digital optical fiber repeaters on a certain side optical fibers circuit by the light signal that optical transmission system sends by what received by optical transmission system, railway digital signal is closed in this primary reception sent to other multi-path digital optical fiber repeaters on opposite side fibre circuit by optical transmission system, simultaneously, also this primary reception is closed railway digital signal and carry out each primary reception digitally encoded signal that channel demultiplexing is reduced to correspondence, it is each primary reception digital signal that this each primary reception digitally encoded signal is distinguished decoded back, this each primary reception digital signal is carried out respectively digital-to-analogue conversion and be reduced to corresponding primary reception output signal, this each primary reception output signal is input to corresponding transmitting set respectively and carries out wireless transmission.
Configure each functional module, components and parts, join dependency device blocks according to accompanying drawing 2 and above-mentioned explanation and write working software program for microprocessor and running parameter is set, enforcement of the present invention can be completed.
The one that the present invention introduces is by power supply, antenna-feedback system, multiple wireless receiver, multiple transmitting set, optical transport receive-transmit system, microprocessor, analog to digital converter, digital to analog converter, encoder, decoder, digital channel multiplexer, digital channel demodulation multiplexer, the digital junction transmission method that power splitter and mixer realize and multi-path digital optical fiber repeater, have and can realize the relay transmission of any point to multiple access, the relay transmission to multiple wireless system can be used for, can long-distance transmission be carried out to light signal and amplify process, and the feature reduced as much as possible because amplifying the noise superposition brought.
Claims (2)
1. a digital junction transmission method for multi-path digital optical fiber repeater, is characterized in that multi-path digital optical fiber repeater is selected to adopt following method of work:
(1) reception of each wireless receiver output signal is carried out analog to digital conversion respectively and obtain receiving digital signals, each receiving digital signals is carried out respectively coding to obtain receiving digitally encoded signal, each is received digitally encoded signal and carry out channel multiplexing process generation reception conjunction railway digital signal;
(2) in the light signal sending time slots of multi-path digital optical fiber repeater, the reception that this multi-path digital optical fiber repeater generates is closed railway digital signal and is carried out wireless forwarding by this multi-path digital optical fiber repeater, and this reception conjunction railway digital signal is issued other the multi-path digital optical fiber repeater be connected on left side and right side fibre circuit by optical transmission system, in the light signal sending time slots of this multi-path digital optical fiber repeater, this multi-path digital optical fiber repeater does not receive the light signal in optical transmission system;
(3) in the light signal receiving slot of multi-path digital optical fiber repeater, this multi-path digital optical fiber repeater receives the light signal being connected to other multi-path digital optical fiber repeaters on a certain side optical fibers circuit and being sent by optical transmission system, in the light signal receiving slot of this multi-path digital optical fiber repeater, this multi-path digital optical fiber repeater does not send by optical transmission system the reception generated by this multi-path digital optical fiber repeater and closes railway digital signal;
(4) in the light signal receiving slot of multi-path digital optical fiber repeater, this multi-path digital optical fiber repeater is reduced to primary reception conjunction railway digital signal by other multi-path digital optical fiber repeaters on a certain side optical fibers circuit by the light signal that optical transmission system sends by what received by optical transmission system, railway digital signal is closed in this primary reception sent to other multi-path digital optical fiber repeaters on opposite side fibre circuit by optical transmission system, simultaneously, also this primary reception is closed railway digital signal and carry out each primary reception digitally encoded signal that channel demultiplexing is reduced to correspondence, it is each primary reception digital signal that this each primary reception digitally encoded signal is distinguished decoded back, this each primary reception digital signal is carried out respectively digital-to-analogue conversion and be reduced to corresponding primary reception output signal, this each primary reception output signal is input to corresponding transmitting set respectively and carries out wireless transmission.
2. a multi-path digital optical fiber repeater, include by power supply, antenna-feedback system, multiple wireless receiver, multiple transmitting set, microprocessor, a set of left side optical transport receive-transmit system and a set of right side optical transport receive-transmit system, it is characterized in that there is multiple analog to digital converter, multiple digital to analog converter, multiple encoder, multiple decoder, a digital channel multiplexer, a digital channel demultiplexer, wireless receiving three branch power splitter, a wireless transmission three branch mixer, a left side transmission Received signal strength power splitter, a right side transmission Received signal strength power splitter, a left side transmission sends signal combiner, a right side transmission sends signal combiner, the input end of analog signal of each analog to digital converter is connected with the Received signal strength output of each wireless receiver respectively, the digital signal output end of each analog to digital converter is connected with the digital signal input end of each encoder respectively, the digital signal output end of each encoder is connected with each shunt digital signal input end of digital channel multiplexer respectively, the conjunction railway digital signal output part of digital channel multiplexer is connected with the input of wireless receiving three branch power splitter, three merits of wireless receiving three branch power splitter divide output respectively with wireless transmission three branch mixer, the branch input that left side transmission sends signal combiner and right side transmission transmission signal combiner is connected, the conjunction road output that left side transmission sends signal combiner is connected with the electric signal input end of the transmission optical-electrical converter of left side optical transmission system, the conjunction road output that right side transmission sends signal combiner is connected with the electric signal input end of the transmission optical-electrical converter of right side optical transmission system, the electrical signal of the reception optical-electrical converter of left side optical transmission system is connected with the input that Received signal strength power splitter is transmitted in left side, the merit of left side transmission Received signal strength power splitter is divided output to transmit the branch input sending signal combiner respectively with wireless transmission three branch's mixer and right side and is connected, the electrical signal of the reception optical-electrical converter of right side optical transmission system is connected with the input that Received signal strength power splitter is transmitted on right side, the merit of right side transmission Received signal strength power splitter is divided output to transmit the branch input sending signal combiner respectively with wireless transmission three branch's mixer and left side and is connected, the conjunction road signal output part of wireless transmission three branch mixer is connected with the conjunction railway digital signal input part of digital channel demodulation multiplexer, each shunt digital signal output end of digital channel demodulation multiplexer is connected with the digital signal input end of each decoder respectively, the digital signal output end of each decoder is connected with the digital signal input end of each digital to analog converter respectively, the analog signal output of each digital to analog converter is connected with the input that transmits of each transmitting set respectively, microprocessor arranges running parameter to analog to digital converter, digital to analog converter, encoder, decoder, digital channel multiplexer and digital channel demodulation multiplexer and performs relevant work program.
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103124197B (en) * | 2011-11-18 | 2015-08-19 | 北京旋极信息技术股份有限公司 | The transmission system of voltage mode analog signal in private network |
| CN102497226A (en) * | 2011-11-25 | 2012-06-13 | 耿直 | Audio code transmission method for optical fiber repeater, and audio code transmission optical fiber repeater |
| CN103237273B (en) * | 2013-04-25 | 2015-08-26 | 广州日滨科技发展有限公司 | Digital data transmission equipment, system and broadcast intercom |
| CN106452595A (en) * | 2016-09-28 | 2017-02-22 | 成都奥克特科技有限公司 | Digital relay transmission method for analog system and multipath digital optical fiber repeater |
| CN106341203A (en) * | 2016-10-18 | 2017-01-18 | 潘致远 | Multi-program addressable fiber transmission public broadcast system |
| CN108880597A (en) * | 2018-07-17 | 2018-11-23 | 广州供电局有限公司 | Repeater circuit and repeater |
| CN111970059A (en) * | 2019-05-20 | 2020-11-20 | 江苏永鼎通信有限公司 | Digital optical fiber repeater transmission system |
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