CN107528609B - Wireless communication system - Google Patents
Wireless communication system Download PDFInfo
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- CN107528609B CN107528609B CN201710985400.6A CN201710985400A CN107528609B CN 107528609 B CN107528609 B CN 107528609B CN 201710985400 A CN201710985400 A CN 201710985400A CN 107528609 B CN107528609 B CN 107528609B
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- 230000006854 communication Effects 0.000 title claims abstract description 293
- 238000004891 communication Methods 0.000 title claims abstract description 287
- 230000003287 optical effect Effects 0.000 claims abstract description 142
- 230000001360 synchronised effect Effects 0.000 claims abstract description 73
- 239000013307 optical fiber Substances 0.000 claims abstract description 61
- 238000000034 method Methods 0.000 claims abstract description 23
- 230000008569 process Effects 0.000 claims abstract description 12
- 230000005540 biological transmission Effects 0.000 claims description 33
- 238000012545 processing Methods 0.000 claims description 30
- 230000003321 amplification Effects 0.000 claims description 26
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 26
- 238000006243 chemical reaction Methods 0.000 claims description 11
- 230000008054 signal transmission Effects 0.000 claims description 5
- 238000010586 diagram Methods 0.000 description 28
- 238000005516 engineering process Methods 0.000 description 14
- 230000000694 effects Effects 0.000 description 8
- 230000033001 locomotion Effects 0.000 description 5
- 238000010295 mobile communication Methods 0.000 description 5
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/40—Circuits
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/3822—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving specially adapted for use in vehicles
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B5/00—Near-field transmission systems, e.g. inductive or capacitive transmission systems
- H04B5/70—Near-field transmission systems, e.g. inductive or capacitive transmission systems specially adapted for specific purposes
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/80—Services using short range communication, e.g. near-field communication [NFC], radio-frequency identification [RFID] or low energy communication
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- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Optical Communication System (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The present embodiments relate to a kind of wireless communication systems, comprising: wireless communication group column and wireless signal receive and dispatch chain；Wireless communication group column include: first group of column optical fiber, optical splitter and multiple wireless communication nodes；First group of column optical fiber transmits the first signal optical signal；First signal optical signal is carried out branch process by optical splitter, obtains branch optical signal；Wireless communication node is synchronous simultaneously to send the first pulse signal；It includes: isochronous controller, the first signal optical fibre, multiple first passive optical branching devices, multiple wireless signal transmitting-receiving nodes, multiple second passive optical branching devices, second signal optical fiber that wireless signal, which receives and dispatches chain,；Isochronous controller, which generates, receives control instruction, is sent to current radio signal transmitting-receiving node；Current radio signal transmitting-receiving node generates the first communicating light signal according to the first pulse signal.
Description
Technical field
The present invention relates to field of communication technology more particularly to a kind of wireless communication systems.
Background technique
Up to now, the purpose that all mobile communication system are established is provided to solve personal communication, so, the first generation is moved
Communication system is moved to 5G mobile communication system now, all mobile communication technologies development are provided to improve the matter of personal communication
Amount.Therefore, attempt to establish high under the conditions of solution in wide area on the existing technology of mobile communication or existing infrastructure
The train-ground communication of fast train is unpractical.In fact, increasingly cannot with the GSM-R that GSM technology is evolved at present
High-speed railway traffic more more and more urgent informationization and intelligentized train-ground communication demand are adapted to, and can't see this technology
Effective progress and high-speed rail land mobile communication system technical progress.
Due under high-speed mobile condition, wireless communication is first subjected to the influence of Doppler effect, due to wireless frequency with
The raising frequency shift (FS) phenomenon of movement speed can also synchronize aggravation, this not only results in frequency step-out and for believing in high density
Number modulation under broadband wireless communications can also bring obviously signal step-out, radio receiver can not parse sender institute
The signal of communication of transmission.
Under high-speed mobile condition, the multipath fading of wireless communication especially wireless broadband communication is sharply amplified, directly logical
Letter path is destroyed due to high-speed mobile instead many unforeseen communication paths, these phenomenons are directly to lead
Cause the main reason for multipath fading significantly increases under high-speed mobile.This phenomenon is under high-power remote communication
It is especially prominent.
In order to achieve the purpose that wirelessly communicate especially wireless broadband communication under high-speed condition, built at a distance along high-speed rail route
If base station simultaneously increases communication and power is common practice, and this way exactly reduces the reliability of wireless communication.Long distance
From wireless communication, such as rain, snow, mist harsh weather phenomenon can not only reduce the quality of wireless communication due to climate change,
Even it can therefore interrupt communication, therefore high-speed rail informationization and intelligentized important support means will be lost in this way by wirelessly communicating
Status can directly result in high-speed rail informationization and intelligentized failure.
Equally, although wireless light communication is not influenced by Doppler effect, the requirement to meteorological condition is excessively high and is
What the high complexity of system was also can't see a possibility that this technology is applied to high-speed rail communication at present, and satellite communication is in addition to communication
Outside the limitation of bandwidth, satellite-signal too weak and too many railway tunnel in high latitude area is also limitation satellite communication applications in high-speed rail
Train-ground communication main cause.
Summary of the invention
The purpose of the present invention is in view of the drawbacks of the prior art, providing a kind of wireless communication system, provide a kind of completely new
Wireless communications mode, millimetre-wave attenuator technology is applied to and train-ground communication is to solve communication bandwidth, with short distance micropower
The remote high-power communication of wireless communication technique substitution solves the integrity problem of wireless communication, with the direct tune of wireless light communication
Mode processed substitutes current wireless broadband communication commonly highdensity signal modulation technique, reaches the signal under high-speed mobile condition
Synchronous and Frequency Synchronization；The present invention combines millimetre-wave attenuator technology and optical communication technique as a result, and uses dedicated communication protocol
Come with realizing vehicle of the train under high-speed mobile condition large capacity, highly reliable data communication.
In view of this, the embodiment of the invention provides a kind of wireless communication systems, comprising:
Wireless communication system includes: that wireless communication group column and wireless signal receive and dispatch chain；
The wireless communication group column include: first group of column optical fiber, optical splitter and multiple wireless communication nodes；
First group of column optical fiber, is used for transmission the first signal optical signal；
The optical splitter obtains the identical branch of multichannel for the first signal optical signal to be carried out branch process
Optical signal；
The multiple wireless communication node, for generating identical first pulse letter according to the branch optical signal is synchronous
Number, thus each wireless communication node of the wireless communication group column is synchronous simultaneously sends first pulse signal；
Wireless signal transmitting-receiving chain include: isochronous controller, the first signal optical fibre, multiple first passive optical branching devices,
Multiple wireless signal transmitting-receiving nodes, multiple second passive optical branching devices, second signal optical fiber；
The isochronous controller receives control instruction for generating, passes through the first signal optical fibre and the first passive optical branch
It is corresponding and need multiple wireless signal transmitting-receiving nodes of return pulse signal to be sent to first passive optical branching device for device
In current radio signal transmitting-receiving node；
The presently described wireless signal transmitting-receiving node, for receiving multiple wireless communication sections of the wireless communication group column
Point while the first pulse signal sent, and the first communicating light signal is generated according to first pulse signal；
Second passive optical branching device, the first Communication ray letter sent for receiving corresponding wireless signal transmitting-receiving node
Number, and it is sent to the second signal optical fiber.
Preferably, after the current radio signal transmitting-receiving node receives first pulse signal, the synchronous control
Device processed is also used to generate reception halt instruction, and is sent to the current radio signal transmitting-receiving node, the wireless signal transmitting-receiving
Node stops receiving first pulse signal.
It is further preferred that the isochronous controller, is also used to generate connecting and receives instruction, it is sent to described current wireless
The connecting wireless signal transmitting-receiving node of signal transmitting and receiving node；
The wireless signal transmitting-receiving node that connects starts the first pulse letter for receiving multiple wireless communication nodes while sending
Number, generate the first communicating light signal；
Second passive optical branching device is led to for receiving the corresponding connecting wireless signal transmitting-receiving node is sent first
Believe optical signal, and is sent to the second signal optical fiber.
It is further preferred that the wireless signal receives and dispatches chain further include:
Second Optical Communication Terminal is connected with the second signal optical fiber, for handling the second signal optical fiber transmission
First communicating light signal.
Preferably, the wireless communication node include: the first photoelectric converter, first frequency generator, the first modulator,
First power amplifier and first antenna；
First photoelectric converter, the branch optical signal sent for receiving the optical splitter, by the branch light
Signal is converted to the first electric signal, is sent to first modulator；
The first frequency generator is sent to first modulator for generating frequency signal；
It is synchronous to generate first for modulating first electric signal into the frequency signal for first modulator
Driving signal, and it is sent to first power amplifier；
It is same to generate amplification first for amplifying to first synchronized signal for first power amplifier
Walk driving signal；
The first antenna, for sending the first pulse signal according to the first synchronized signal of the amplification.
It is further preferred that the wireless signal transmitting-receiving node includes: the second antenna, low-noise amplifier, frequency mixer,
Two frequency generators, limiting amplifier, the second modulator and the second photoelectric converter；
Second antenna, first for receiving multiple wireless communication nodes of the wireless communication group column while sending
Pulse signal；
The low-noise amplifier, for received first pulse signal of second antenna to be carried out low noise general goal
Reason generates processing pulse signal, and is sent to the frequency mixer；
The second frequency generator is sent to the frequency mixer for generating frequency signal；
The frequency mixer, for frequency signal processing to be mixed electric signal according to the processing pulse signal；
The limiting amplifier generates amplification electric signal for the mixing electric signal to be carried out limited range enlargement processing；
Second modulator generates the first communication electric signal for the amplification electric signal to be carried out protocol conversion；
Second photoelectric converter, for the first communication electric signal to be converted to the first communicating light signal.
It is further preferred that the wireless signal transmitting-receiving node further includes the second power amplifier；
First signal optical fibre, is also used to transmit second signal optical signal；
The multiple first passive optical branching device is respectively used to believe the second signal light of first signal transmission by optical fiber
It number is handled, obtains branch's optical signal；
Second photoelectric converter is also used to receive branch's light letter of corresponding first passive optical branching device transmission
Number, branch's optical signal is converted to the second electric signal, is sent to second modulator；
The second frequency generator, is also used to generate frequency signal, is sent to second modulator；
Second modulator is also used to receive synchronous send that the isochronous controller is sent and instructs, according to described same
Step sends instruction and modulates second electric signal into the frequency signal, generates the second synchronized signal, and be sent to
Second power amplifier；
Second power amplifier is also used to amplify second synchronized signal, generates amplification second
Synchronized signal；
Second antenna is also used to send the second pulse signal according to second synchronized signal, thus wirelessly
Synchronous transmission is identical simultaneously under the control of the isochronous controller for each wireless signal transmitting-receiving node of signal transmitting and receiving chain
Second pulse signal.
It is further preferred that the wireless communication group column include signal processor, saved respectively with the multiple wireless communication
Point is connected；
Each first antenna of the multiple wireless communication node is also used to receive the wireless signal transmitting-receiving node hair
The second pulse signal sent；
First modulator is also used to demodulate second pulse signal, generates the second communication electric signal；
First photoelectric converter, the second communication electric signal for being also used to correspond to the generation of the first demodulator generate second
Communicating light signal；
The signal processor, the second Communication ray letter sent for receiving each described wireless communication node respectively
Number, and filtration treatment is carried out to receive optical signal.
It is further preferred that the wireless communication group column further include:
Second group of column optical fiber, is connected with the signal processor, is used for transmission the reception that the signal processor is sent
Optical signal.
It is further preferred that the wireless communication group column further include:
First Optical Communication Terminal is connected with second group of column optical fiber, for handling second group of column optical fiber transmission
Receive optical signal.
A kind of wireless communication system provided in an embodiment of the present invention provides a kind of completely new wireless communications mode, will milli
The metric wave communication technology is applied to and train-ground communication is to solve communication bandwidth, substitutes long distance with short distance micropower wireless communication technology
From the integrity problem that high-power communication solves wireless communication, substituted with the reactance modulation system of wireless light communication at present without line width
Band communicates common highdensity signal modulation technique, reaches signal synchronization and Frequency Synchronization under high-speed mobile condition；As a result,
Present invention combination millimetre-wave attenuator technology and optical communication technique, and realize train in high-speed mobile using dedicated communication protocol
Under the conditions of vehicle ground large capacity, highly reliable data communication.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of wireless communication group provided in an embodiment of the present invention column；
Fig. 2 is the structural schematic diagram of wireless communication node provided in an embodiment of the present invention；
Fig. 3 is the schematic diagram that wireless communication node provided in an embodiment of the present invention sends signal；
Fig. 4 is the structural schematic diagram that wireless signal provided in an embodiment of the present invention receives and dispatches chain；
Fig. 5 is the structural schematic diagram of wireless signal transmitting-receiving node provided in an embodiment of the present invention；
Fig. 6 is the schematic diagram that wireless signal transmitting-receiving node provided in an embodiment of the present invention receives signal.
Specific embodiment
Below by drawings and examples, technical scheme of the present invention will be described in further detail.
Wireless communication system provided in an embodiment of the present invention includes that wireless communication group column and wireless signal receive and dispatch chain.
Firstly, introducing the structure of wireless communication group column, Fig. 1 is the structure of wireless communication group provided in an embodiment of the present invention column
Schematic diagram, as shown in Figure 1, wireless communication group column specifically include first group of column optical fiber 11, optical splitter 12 and multiple wireless communications
Node 13.It should be noted that wireless communication group column both can receive and dispatch chain to wireless signal and send signal in communication process,
Also it can receive the signal that wireless signal transmitting-receiving chain is sent.
First group of column optical fiber 11 is used for transmission the first signal optical signal；Specifically, what first group of column optical fiber 11 transmitted is
Optical signal, the first signal optical signal refer to that wireless communication group column will receive and dispatch the signal that chain is sent to wireless signal.
Optical splitter 12 is connected with first group of column optical fiber 11, therefore optical splitter 12 can receive to first group of column optical fiber
The signal optical signal of 11 transmission, the first signal optical signal that optical splitter 12 transmits first group of column optical fiber 11 carry out at branch
Reason, obtains the identical branch optical signal of multichannel；And optical splitter 12 is connected with multiple wireless communication nodes 13, and will be each
Road branch optical signal is respectively sent to a wireless communication node 13, so that the form for realizing signal optical signal to broadcast is downward
Transmission, so branch optical signal received on each wireless communication node 13 is the same.
Multiple wireless communication nodes 13 generate identical first pulse signal according to branch optical signal is synchronous, thus wirelessly
Each wireless communication node 13 of communication set column is synchronous simultaneously to send the first pulse signal.Fig. 2 provides for the embodiment of the present invention
Wireless communication node 13 structural schematic diagram, lower mask body introduces the structure of wireless communication node 13, as shown in Fig. 2, wirelessly
Communication node 13 includes the first photoelectric converter 131, first frequency generator 132, the first modulator 133, the first power amplification
Device 134 and first antenna 135.
Fig. 3 is the schematic diagram that wireless communication node 13 provided in an embodiment of the present invention sends signal, in conjunction with Fig. 2 and Fig. 3 institute
Show, when wireless communication node 13 sends signal, the first photoelectric converter 131 is used to receive the branch light of the transmission of optical splitter 12
Branch optical signal is converted to the first electric signal by signal, to complete optical signal to the conversion process of electric signal, and is sent to
One modulator 133；Wherein the waveform of branch optical signal can be the waveform diagram of 131 lower left of the first photoelectric converter in Fig. 3, warp
The waveform diagram of the first electric signal formed after photoelectric conversion can be the upper left waveform diagram of the first photoelectric converter 131.
First frequency generator 132 is sent to the first modulator 133 for generating frequency signal；Specifically, frequency occurs
Device can generate the frequency signal of stable waveform, so that modulator carries out carrier wave；Wherein, first frequency generator 132 generates
Frequency signal waveform diagram can be waveform diagram shown in 132 upper left side of first frequency generator in Fig. 3.
First modulator 133, the first electric signal is modulated into frequency signal, that is, the first electric signal is loaded steady
In the frequency signal of standing wave shape, the first synchronized signal is generated, and be sent to the first power amplifier 134；Wherein, first is same
The waveform diagram for walking driving signal can be waveform diagram shown in 133 upper left side of the first modulator in Fig. 3；The modulation system of modulator
For impulse modulation mode, such as on-off keying (on-off keying modulation, OOK) or digit pulse interval modulation
(digital pulse interval modulation, DPIM) etc..
First power amplifier 134 generates the synchronous driving of amplification first for amplifying to the first synchronized signal
Signal；Specifically, needing the first power to put since the waveform of the first synchronized signal of the first modulator 133 generation is smaller
Big device 134 amplifies the first synchronized signal, so that obtaining waveform significantly amplifies the first synchronized signal.
First antenna 135, for sending the first pulse signal according to the first synchronized signal of amplification；Wherein, first day
Line 135 is preferably radio-frequency antenna, and specifically, radio-frequency antenna is same according to the amplification first that the first power amplifier 134 generates
The first pulse signal that driving signal generates micropower is walked, the first pulse signal of micropower can be radiofrequency signal, and send
Chain is received and dispatched to wireless signal.
Secondly, introducing the structure of wireless signal transmitting-receiving chain, Fig. 4 is that wireless signal provided in an embodiment of the present invention receives and dispatches chain
Structural schematic diagram, as shown in figure 4, wireless signal transmitting-receiving chain includes isochronous controller 23, the first signal optical fibre 21, multiple first nothings
Source optical branching device 22, multiple wireless signal transmitting-receiving nodes 24, multiple second passive optical branching devices 25, second signal optical fiber 26.It needs
It is noted that wireless signal transmitting-receiving chain can both be arranged to wireless communication group, the letter that wireless communication group column are sent also can receive
Number.
Isochronous controller 23 receives control instruction for generating, passes through the first signal optical fibre 21 and the first passive optical branch
Device 22, is sent to that the first passive optical branching device 22 is corresponding, and multiple wireless signals of return pulse signal is needed to receive and dispatch section
Current radio signal transmitting-receiving node 24 in point 24.
Current radio signal transmitting-receiving node 24, for receiving multiple wireless communication nodes 13 of wireless communication group column while sending out
The first pulse signal sent, and the first communicating light signal is generated according to the first pulse signal；It should be noted that current wireless communication
Number transmitting-receiving node 24 refers to that in running order wireless signal transmitting-receiving node 24, the wireless signal of each working condition receive and dispatch section
Point 24 can be referred to as current radio signal transmitting-receiving node 24, and the structure of each wireless signal transmitting-receiving node 24 is identical.
Fig. 5 is the structural schematic diagram of wireless signal transmitting-receiving node 24 provided in an embodiment of the present invention, and lower mask body introduces nothing
The structure of line signal transmitting and receiving node 24, as shown in figure 5, wireless signal transmitting-receiving node 24 includes the second antenna 245, low noise amplification
Device 246, frequency mixer 247, second frequency generator 242, limiting amplifier 248, the second modulator 243 and the second photoelectric converter
241。
Fig. 6 is the schematic diagram that wireless signal transmitting-receiving node 24 provided in an embodiment of the present invention receives signal, in conjunction with Fig. 5 and figure
Shown in 6, for wireless signal transmitting-receiving node 24 when receiving signal, the second antenna 245 is used to receive multiple nothings of wireless communication group column
The first pulse signal that the first antenna 135 of line communication node 13 is sent simultaneously, that is to say, that wireless communication group column and wireless communication
Signal transmission between number transmitting-receiving chain is what the radiofrequency signal generated by antenna was transmitted；Wherein, the second antenna 245 receives
To the waveform of the first pulse signal can be the waveform diagram such as 245 left side of the second antenna in Fig. 6.
Low-noise amplifier 246, for received first pulse signal of the second antenna 245 to be carried out low noise enhanced processing,
Processing pulse signal is generated, and is sent to frequency mixer 247；The waveform for handling pulse signal can be for such as low noise amplification in Fig. 6
The waveform diagram in 246 upper right side of device.
Second frequency generator 242 is sent to frequency mixer 247 for generating frequency signal；Specifically, second frequency is sent out
Raw device 242 can generate the frequency signal of stable waveform, so that frequency mixer 247 carries out carrier wave, wherein the waveform of frequency signal can
Think such as the upper left waveform diagram of second frequency generator 242 in Fig. 6.
Frequency mixer 247, for frequency signal processing to be mixed electric signal according to processing pulse signal；Specifically, mixing
Device 247 will handle pulse signal load in having the frequency signal for stablizing waveform, to obtain mixed frequency signal, be sent to clipping
Amplifier 248, wherein the waveform diagram of obtained mixed frequency signal can be the waveform diagram such as 247 upper right side of frequency mixer in Fig. 6.
Limiting amplifier 248 carries out limited range enlargement processing for that will be mixed electric signal, generates amplification electric signal；Specifically,
Since the mixed frequency signal waveform that frequency mixer 247 generates is smaller, limiting amplifier 248 is needed to amplify processing to mixed frequency signal,
Significantly amplify electric signal to obtain waveform, and is sent to the second modulator 243；Wherein, the waveform diagram for amplifying electric signal can
Think the waveform diagram such as 248 upper right side of limiting amplifier in Fig. 6.
Second modulator 243 carries out protocol conversion generation the first communication electric signal for that will amplify electric signal；First communication
The waveform diagram of electric signal can be the waveform diagram such as 243 upper right side of the second modulator in Fig. 6.
Second photoelectric converter 241, for the first communication electric signal to be converted to the first communicating light signal, thus will transmission
Electric signal be converted to optical signal.
After current radio signal transmitting-receiving node 24 receives first pulse signal, isochronous controller 23 is also used to
It generates and receives halt instruction, and be sent to the current radio signal transmitting-receiving node 24, the stopping of wireless signal transmitting-receiving node 24 connects
Receive the first pulse signal.Isochronous controller 23 is also used to generate connecting and receives instruction, is sent to current radio signal transmitting-receiving node
24 connecting wireless signal transmitting-receiving node 24；Wireless signal transmitting-receiving node 24 is connected to start to receive multiple wireless communication nodes 13 together
When the first pulse signal for sending, generate the first communicating light signal.
Multiple second passive optical branching devices 25, are connected with wireless signal transmitting-receiving node 24 respectively, that is to say, that each wireless
Signal transmitting and receiving node 24 corresponds to second passive optical branching device 25, and the second passive optical branching device 25 is for receiving corresponding connecting nothing
The first communicating light signal that line signal transmitting and receiving node 24 generates, and it is sent to second signal optical fiber 26.
It further includes the second Optical Communication Terminal 27 that wireless signal, which receives chain, is connected with second signal optical fiber 26, for handling second
The first communicating light signal that signal optical fibre 26 is sent.
During wireless signal receives and dispatches chain and arranges signalling to wireless communication group, isochronous controller 23 is also used to generate together
Step sends signal, is sent to all wireless signal transmitting-receiving nodes 24, and all wireless signal transmitting-receiving nodes 24 are according to as defined in system
Communication protocol is synchronous to issue identical frequency, and the second synchronous in time pulse signal, and thus wireless signal receives and dispatches chain
Each wireless signal transmitting-receiving node 24 is synchronous simultaneously under the control of isochronous controller 23 to send identical second pulse signal.
Specifically, again as shown in figure 4, the first signal optical fibre 21 can be also used for transmission second signal optical signal, wherein
The transmission of first signal optical fibre 21 is optical signal, and second signal optical signal refers to that wireless signal transmitting-receiving chain will be arranged to wireless communication group
The signal of transmission.
Multiple first passive optical branching devices 22 are connected with the first signal optical fibre 21 respectively, and the first signal optical fibre 21 is transmitted
Second signal optical signal handled, obtain the identical branch's optical signal of multichannel, and be sent to corresponding wireless signal and receive
Node 24 is sent out, is transmitted downwards to realize signal optical signal in the form broadcasted, so in each wireless signal transmitting-receiving node
Received branch's optical signal is the same on 24.
In conjunction with shown in Fig. 4 and Fig. 5, the second photoelectric converter 241 of each wireless signal transmitting-receiving node 24 be can be also used for
The branch's optical signal for receiving corresponding first passive optical branching device 22 transmission, is converted to the second electric signal for branch's optical signal, thus
Optical signal is completed to the conversion process of electric signal, is sent to the second modulator 243.
Second frequency generator 242 can be also used for generating frequency signal, be sent to the second modulator 243；Specifically, frequency
Rate generator can generate the frequency signal of stable waveform, so that modulator carries out carrier wave.Second modulator 243, is also used to connect
It receives the synchronous of the transmission of isochronous controller 23 and sends instruction, modulated the second electric signal to frequency signal according to synchronous transmission instruction
In, the second synchronized signal is generated, and be sent to the second power amplifier 244, wherein the modulation system of modulator is pulse
Modulation system, such as OOK or DPIM etc..
Second power amplifier 244 can be also used for amplifying the second synchronized signal, and it is same to generate amplification second
Walk driving signal；Specifically, needing second since the waveform of the second synchronized signal of the second modulator 243 generation is smaller
Power amplifier 244 amplifies the second synchronized signal, so that obtaining waveform significantly amplifies the second synchronous driving letter
Number.
Second antenna 245 is also used to send the second pulse signal according to the second synchronized signal, and the second antenna 245 is excellent
It is selected as radio-frequency antenna, specifically, radio-frequency antenna is raw according to the second driving signal of amplification that the second power amplifier 244 generates
At the second pulse signal of micropower, the second pulse signal of micropower can be radiofrequency signal, and be sent to wireless communication group
Column.
The first antenna 135 of multiple wireless communication nodes 13 can be also used for receiving the wireless communication in wireless signal transmitting-receiving chain
The second pulse signal that number transmitting-receiving node 24 is sent.
Again as shown in Figure 1, wireless communication group column further include signal processor 14, signal processor 14 can be chip,
It is connected respectively with multiple wireless communication nodes 13, the identical communicating light signal for being generated to multiple wireless communication nodes 13
It is filtered processing.
Specifically, referring to figs. 1 and 2, the first modulator 133 is also used to demodulate the second pulse signal, produce
Raw second communication electric signal；First photoelectric converter 131 is also used to correspond to the second communication electric signal of the first demodulator generation
Generate the second communicating light signal.Signal processor 14 is used to receive the second communication of each wireless communication node 13 transmission respectively
Optical signal, and filtration treatment is carried out to receive optical signal.Wireless communication group column further include second group of column optical fiber 15, with signal processing
Device 14 is connected, and is used for transmission the reception optical signal of the transmission of signal processor 14.Wireless communication group column further include the first optic communication
Machine 16 is connected with second group of column optical fiber 15, for handling the reception optical signal of second group of column optical fiber 15 transmission.
Wireless communication system provided by the invention specifically can be applied in train-ground communication, specifically, wireless communication group arranges
Distribution with wireless signal transmitting-receiving chain be it is parallel, wireless communication group arranges the y direction along train and is mounted on compartment, multiple
Wireless communication node 13 forms the area of radio coverage of a line style by the combination of antenna or antenna；Wireless signal receives and dispatches chain edge
The direction of train rail is arranged, and multiple wireless signal transmitting-receiving nodes 24 are connected by passive optical network, forms chain wireless network,
The antenna of each wireless signal transmitting-receiving node 24 and rail are perpendicular, and opposite with the antenna direction of wireless communication node 13,
Its distance guarantees that the wireless signal mutually emitted can completely be received by other side, to form wireless communication relationship；Wherein, line style
The length of wireless communication group column is L, and the distance between each wireless signal transmitting-receiving node 24 of wireless signal transmitting-receiving chain is equal, and
And it is equal to the length L of line style wireless communication group column.Lower mask body is introduced in-vehicle wireless communication group column and is received and dispatched with terrestrial wireless signal
Communication process between chain.
When train communicates to the ground, train-ground communication mainly includes two parts, and one is in-vehicle wireless communication group column hair
The number of delivering letters, the other is the wireless signal transmitting-receiving link collection of letters number.
When in-vehicle wireless communication group arranges and sends signal, by the first signal optical signal of train signal processing system end sending
It is transmitted along first group of column optical fiber 11, the identical branch optical signal in the road N, the identical branch light in the road N is divided by optical splitter 12
Signal is transmitted to corresponding wireless communication node 13, the photoelectricity of each wireless communication node 13 along first group of column optical fiber 11 respectively
Converter receives the branch optical signal all the way that optical splitter 12 is sent.Isochronous controller 23 is used for all wireless communication nodes
13 send synchronous control signal, and it is identical according to the synchronous sending of communication protocol as defined in system to control all wireless communication nodes 13
Frequency, and the first synchronous in time pulse signal.
Specifically, the first photoelectric converter 131 of each wireless communication node 13 receives the branch that optical splitter 12 is sent
Branch optical signal is converted to the first electric signal by optical signal, to complete optical signal to the conversion process of electric signal, and is sent to
First modulator 133.First frequency generator 132 generates frequency signal, is sent to the first modulator 133；Specifically, frequency is sent out
Raw device can generate the frequency signal of stable waveform, so that modulator carries out carrier wave.First modulator 133 is by the first electric signal tune
System generates the first synchronous driving into frequency signal, that is, by the load of the first electric signal in the frequency signal for stablizing waveform
Signal, and it is sent to the first power amplifier 134；Wherein, the modulation system of modulator be impulse modulation mode, such as OOK or
DPIM etc..First power amplifier 134 amplifies the first synchronized signal, generates the first synchronized signal of amplification；
Specifically, needing the first power amplifier since the waveform of the first synchronized signal of the first modulator 133 generation is smaller
134 pair of first synchronized signal amplifies, so that obtaining waveform significantly amplifies the first synchronized signal.First antenna
135 send the first pulse signal according to the first synchronized signal of amplification；Wherein, first antenna 135 is preferably radio-frequency antenna, tool
For body, radio-frequency antenna generates micropower according to the first synchronized signal of amplification that the first power amplifier 134 generates
First pulse signal, the first pulse signal of micropower can be radiofrequency signal, and be sent to wireless signal transmitting-receiving chain.Thus real
Each wireless communication node 13 of wireless communication group column while the first pulse signal of synchronous transmission are showed.
When wireless signal receives and dispatches the link collection of letters, isochronous controller 23, which generates, receives control instruction, passes through the first signal
Optical fiber 21 and the first passive optical branching device 22, it is corresponding to be sent to the first passive optical branching device 22, and needs to receive pulse letter
Number multiple wireless signal transmitting-receiving nodes 24 in current radio signal transmitting-receiving node 24.Current radio signal transmitting-receiving node 24 connects
The first pulse signal that multiple wireless communication nodes 13 of wireless communication group column are sent simultaneously is received, and raw according to the first pulse signal
At the first communicating light signal.
Specifically, the second antenna 245 of current radio signal transmitting-receiving node 24 receives the multiple wireless of wireless communication group column
The first pulse signal that the first antenna 135 of communication node 13 is sent simultaneously, that is to say, that wireless communication group column and wireless signal
Signal transmission between transmitting-receiving chain is what the radiofrequency signal generated by antenna was transmitted.Low-noise amplifier 246 is by second
Received first pulse signal of antenna 245 carries out low noise enhanced processing, generates processing pulse signal, and be sent to frequency mixer 247.
Second frequency generator 242 generates frequency signal, is sent to frequency mixer 247；Specifically, second frequency generator 242 can produce
The raw frequency signal for stablizing waveform, so that frequency mixer 247 carries out carrier wave.Frequency mixer 247 believes frequency according to processing pulse signal
Number processing for mixing electric signal；Specifically, frequency mixer 247, which will handle pulse signal load, has the frequency signal for stablizing waveform
In, to obtain mixed frequency signal, it is sent to limiting amplifier 248.Limiting amplifier 248 will be mixed electric signal and carry out limited range enlargement
Processing generates amplification electric signal；Specifically, needing limiting amplifier since the mixed frequency signal waveform that frequency mixer 247 generates is smaller
248 pairs of mixed frequency signals amplify processing, so that obtaining waveform significantly amplifies electric signal, and are sent to the second modulator 243.
Amplification electric signal is carried out protocol conversion and generates the first communication electric signal by the second modulator 243, is sent to photoelectric converter.Second
First communication electric signal is converted to the first communicating light signal by photoelectric converter 241, so that the electric signal of transmission is converted to light
Signal, and it is sent to corresponding second passive optical branching device 25.
After current radio signal transmitting-receiving node 24 receives first pulse signal, isochronous controller 23 is also used to
It generates and receives halt instruction, and be sent to current radio signal transmitting-receiving node 24, wireless signal transmitting-receiving node 24 stops receiving the
One pulse signal；Isochronous controller 23, which generates to connect, receives instruction, is sent to the connecting nothing of current radio signal transmitting-receiving node 24
Line signal transmitting and receiving node 24；Connect wireless signal transmitting-receiving node 24 starts to receive the transmission simultaneously of multiple wireless communication nodes 13 the
One pulse signal generates the first communicating light signal, and is sent to corresponding second passive optical branching device 25.
Corresponding first for connecting wireless signal transmitting-receiving node 24 and generating that multiple second passive optical branching devices 25 will receive
Communicating light signal is sent to second signal optical fiber 26, the second optical fiber by the first communicating light signal be transmitted to the second Optical Communication Terminal 27 into
Traveling optical signal processing.
In above-mentioned train to the ground communication process, each wireless communication node 13 of in-vehicle wireless communication group column is according to being
Communication protocol as defined in uniting is synchronous to issue identical frequency, and the first pulse signal of micropower synchronous in time, these
The wireless signal that first pulse signal of synchronous micropower forms a direction GCS Ground Communication System receives and dispatches chain, thus wireless
A wireless signal transmitting-receiving node 24 in signal transmitting and receiving chain is received；Wireless signal transmitting-receiving node 24 receives and dispatches chain in wireless signal
Isochronous controller 23 control under, the signal received is subjected to protocol conversion, and by the of wireless signal transmitting-receiving node 24
Two photoelectric converters 241 are converted to optical signal, then according to the instruction of the second Optical Communication Terminal of the receiving end of ground network 27, by light
Signal is transferred to ground receiver end by optical fiber and is handled.
In train traveling process, with the movement of train, line style wireless communication group column can be mobile until being detached from train
The wireless signal transmitting-receiving node BF (k) of ground chain network, but due between the wireless signal transmitting-receiving node 24 of ground network
Therefore the equal length of distance and line style wireless communication group column is detached from wireless signal transmitting-receiving node when line style wireless communication group arranges
When BF (k), it is identical that another is necessarily accessed simultaneously according to moving direction, and in the wireless signal transmitting-receiving node BF of synchronous working
(k-1) or wireless signal transmitting-receiving node BF (k+1), and line style is received by new wireless signal transmitting-receiving node 24 and wirelessly communicates group
The wireless communication signals sent are arranged, and in order successively by the second photoelectric converter 241 of each wireless signal transmitting-receiving node 24
Optical signal is converted to, the second Optical Communication Terminal 27 for being transferred to terrestrial communication networks is handled.For convenience of description, above-mentioned BF is indicated
Wireless signal transmitting-receiving node 24, BF (k) indicate that k-th of wireless signal transmitting-receiving node, BF (k-1) indicate -1 wireless signal of kth
Transmitting-receiving node, BF (k+1) indicate+1 wireless signal transmitting-receiving node of kth.
Vehicle-mounted line style wireless communication group, which is arranged, as a result, is formed by chain wireless network along terrestrial wireless signal transmitting-receiving chain with train
Network is mobile, and 13 machine of each wireless communication node of line style wireless communication group column passes sequentially through the wireless communication of ground chain wireless network
Number transmitting-receiving node 24, due to the fully synchronized work of each wireless communication node 13, so when train passes through, the nothing of ground network
The signal that line signal transmitting and receiving node 24 receives be it is duplicate, not will receive the influence of train moving process.
Meanwhile although during train high-speed mobile, vehicle-mounted line style wireless communication group column also in high-speed mobile, by
It is substantially vertical in the wireless signal transmitting-receiving node of radio wave and ground network that line style wireless communication group column are sent, and use
The reactance modulation system of optic communication, thus influence of the Doppler effect for communication process is very little.Further, due to line
The direction of the launch of the radio wave of type wireless communication group column receives and dispatches chain perpendicular to terrestrial wireless signal, so there is high s/n ratios
The communication path based on directapath, organize by wireless communication column power adjustment and can using the antenna system of high-quality
To avoid the interference of multipath, to guarantee communication quality in the quick traveling process of train.
When ground is to train communication, train-ground communication mainly includes two parts, and one is that wireless signal transmitting-receiving chain is sent
Signal, the other is in-vehicle wireless communication group column receive signal.
When terrestrial wireless signal transmitting-receiving chain sends signal, isochronous controller 23 generates synchronous transmission signal, is sent to institute
There is wireless signal transmitting and receiving node 24, all wireless signal transmitting-receiving nodes 24 are identical according to the synchronous sending of communication protocol as defined in system
Frequency, and the second synchronous in time pulse signal, thus each wireless signal of wireless signal transmitting-receiving chain receives and dispatches section
Point 24 is synchronous simultaneously under the control of isochronous controller 23 to send identical second pulse signal.
Specifically, the first signal optical fibre 21 transmits second signal optical signal, wherein the transmission of the first signal optical fibre 21 is light
Signal, second signal optical signal refer to that wireless signal transmitting-receiving chain will arrange the signal sent to wireless communication group.Multiple first is passive
Optical branching device 22 handles the second signal optical signal that the first signal optical fibre 21 transmits, and obtains the identical branch's light letter of multichannel
Number, and it is sent to corresponding wireless signal transmitting-receiving node 24, it is passed downwards to realize signal optical signal in the form broadcasted
It is defeated, so branch's optical signal received on each wireless signal transmitting-receiving node 24 is the same.Each wireless signal is received
The second photoelectric converter 241 for sending out node 24 receives branch's optical signal of corresponding first passive optical branching device 22 transmission, by branch
Optical signal is converted to the second electric signal, to complete optical signal to the conversion process of electric signal, is sent to the second modulator 243.
Second frequency generator 242 generates frequency signal, is sent to the second modulator 243.Second modulator 243 receives isochronous controller
23 transmissions that synchronize sent instruct, and modulate the second electric signal into frequency signal according to synchronizing to send to instruct, generation second is together
Driving signal is walked, and is sent to the second power amplifier 244, wherein the modulation system of modulator is impulse modulation mode, such as
OOK or DPIM etc..Second power amplifier 244 amplifies the second synchronized signal, generates the synchronous driving of amplification second
Signal；Specifically, needing the second power to put since the waveform of the second synchronized signal of the second modulator 243 generation is smaller
Big device 244 amplifies the second synchronized signal, so that obtaining waveform significantly amplifies the second synchronized signal.Second
Antenna 245 sends the second pulse signal according to the second synchronized signal, and the second antenna 245 is preferably radio-frequency antenna, specifically
For, radio-frequency antenna generates the second pulse of micropower according to the second driving signal of amplification that the second power amplifier 244 generates
Signal, the second pulse signal of micropower can be radiofrequency signal, and be sent to wireless communication group column.
When wireless communication group is listed in and receives signal, the first antenna 135 of multiple wireless communication nodes 13 receives wireless communication
The signal of communication that wireless signal transmitting-receiving node 24 in number transmitting-receiving chain is sent.First modulator 133 carries out the second pulse signal
Demodulation generates the second communication electric signal；The second communication electric signal that first photoelectric converter 131 generates corresponding first demodulator
Generate the second communicating light signal.Signal processor 14 receives the second Communication ray letter of each wireless communication node 13 transmission respectively
Number, processing is filtered to the identical communicating light signal that multiple wireless communication nodes 13 generate and obtains receiving optical signal, and will
It handles obtained reception optical signal and the place that the first Optical Communication Terminal 16 receive optical signal is transmitted to by second group of column optical fiber 15
Reason.
Further, in this example, by taking communication frequency 90G millimeter wave as an example, if being calculated with 5% signal modulation rate,
The traffic rate of about 4.5G can be obtained under 90G carrier frequency, equally, be easier to these frequencies of frequency 45G, 60G of acquisition
Section getable traffic rate be also it is considerable, can be provided considerably beyond current communication system for bullet train
Traffic rate, therefore arrange that multiple Frequency points carry out communication and can obtain more communication bandwidths in millimeter-wave frequency section.
In above-mentioned communication process, although as train high-speed mobile sender is also in high-speed mobile, due to
The wireless signal transmitting-receiving node 24 that line style wireless communication group arranges emitted radio wave and ground network is substantially vertical, and uses
The reactance modulation system of optic communication, influence of the Doppler effect for communication process be very little.
In the structure of above-mentioned communication system, wireless communication group can be arranged and the wireless signal of terrestrial communication networks is received and dispatched
Node is regarded as in one plane, and maximum Doppler effect appears in the node just correspondence of ground network in vehicle-mounted line style
When between any two wireless communication nodes of wireless communication group column, therefore there is simplified Doppler effect formulas:
Wherein: frequency offseting value caused by Δ f=Doppler effect；
F=working frequency, in this case, it is 90G；
V=movement speed, in this case, it is 360km/h, 0.1km/s；
The C=light velocity, 300,000km/s；
Angle between θ=in-vehicle wireless communication group column moving direction and terrestrial wireless signal transmitting-receiving chain；
When the distance between wireless communication node of vehicle-mounted line style wireless communication group column is d, and wireless communication group column and ground
When vertical range between the wireless signal transmitting-receiving node of face chain wireless signal transmitting-receiving chain is similarly d, it is in movement speed
Under the conditions of 360km/h, above-mentioned formula is writeable are as follows:
Frequency offseting value Δ f=caused by maximum Doppler effect can be obtained by substituting into c=300,000km/s, F=90G
13416Hz。
This frequency shift (FS) rate is less than 15/10000000ths, for the fundamental frequency of 90G under the operating condition directly modulated work
It will not influence the normal work of radio receiving-transmitting unit when making completely.
To sum up, during above-mentioned train-ground communication, in-vehicle wireless communication group, which is arranged, receives and dispatches chain not offset along terrestrial wireless signal
Dynamic, the wireless signal for passing sequentially through each wireless signal transmitting-receiving node of terrestrial communication networks, and successively sequentially holding to the ground is received
It sends out node and issues wireless communication signals, each wireless signal transmitting-receiving node of ground surface end communication network receives these signals of communication
When by network rule of communication successively sequentially, and handled by the core network that optical communication network is sent to ground.Meanwhile ground
Each wireless signal transmitting-receiving node of face communication network is arranged to in-vehicle wireless communication group sends signal of communication, and logical in onboard wireless
Letter group arrange by when be received, then vehicle-mounted core network is transmitted to by vehicle-mounted optical communication network and carries out data processing, to realize
Continuous communiction process of the train of high-speed mobile to ground network in one section of region.
In addition, it should be noted that, during train operation, each in-vehicle wireless communication of in-vehicle wireless communication group column
Node also can receive the signal that terrestrial wireless signal transmitting-receiving chain is sent, can use frequency division multiplexing while sending signal
To realize.
Likewise, each wireless signal receives node using frequency multiplexing technique in reception vehicle in terrestrial wireless signal transmitting-receiving chain
While carrier radio communication group column send signal, it can also be arranged to wireless communication group and send signal.That is wireless communication section
Point and wireless signal receive node can send and receive signal simultaneously, to realize the continuous communiction mistake in train motion process
Journey.
A kind of wireless communication system provided in an embodiment of the present invention provides a kind of completely new wireless communications mode, will milli
The metric wave communication technology is applied to and train-ground communication is to solve communication bandwidth, substitutes long distance with short distance micropower wireless communication technology
From the integrity problem that high-power communication solves wireless communication, substituted with the reactance modulation system of wireless light communication at present without line width
Band communicates common highdensity signal modulation technique, reaches signal synchronization and Frequency Synchronization under high-speed mobile condition；As a result,
Present invention combination millimetre-wave attenuator technology and optical communication technique, and realize train in high-speed mobile using dedicated communication protocol
Under the conditions of vehicle ground large capacity, highly reliable data communication.
Professional should further appreciate that, described in conjunction with the examples disclosed in the embodiments of the present disclosure
Unit and algorithm steps, can be realized with electronic hardware, computer software, or a combination of the two, hard in order to clearly demonstrate
The interchangeability of part and software generally describes each exemplary composition and step according to function in the above description.
These functions are implemented in hardware or software actually, the specific application and design constraint depending on technical solution.
Professional technician can use different methods to achieve the described function each specific application, but this realization
It should not be considered as beyond the scope of the present invention.
The step of method described in conjunction with the examples disclosed in this document or algorithm, can be executed with hardware, processor
The combination of software module or the two is implemented.Software module can be placed in random access memory (RAM), memory, read-only memory
(ROM), electrically programmable ROM, electrically erasable ROM, register, hard disk, moveable magnetic disc, CD-ROM or technical field
In any other form of storage medium well known to interior.
Above-described specific embodiment has carried out further the purpose of the present invention, technical scheme and beneficial effects
It is described in detail, it should be understood that being not intended to limit the present invention the foregoing is merely a specific embodiment of the invention
Protection scope, all within the spirits and principles of the present invention, any modification, equivalent substitution, improvement and etc. done should all include
Within protection scope of the present invention.
Claims (10)
1. a kind of wireless communication system, which is characterized in that the wireless communication system includes: wireless communication group column and wireless signal
Receive and dispatch chain；
The wireless communication group column include: first group of column optical fiber, optical splitter and multiple wireless communication nodes；
First group of column optical fiber, is used for transmission the first signal optical signal；
The optical splitter obtains the identical branch light letter of multichannel for the first signal optical signal to be carried out branch process
Number；
The multiple wireless communication node, for generating identical first pulse signal according to the branch optical signal is synchronous, by
Each wireless communication node of this wireless communication group column is synchronous simultaneously to send first pulse signal；
Wireless signal transmitting-receiving chain includes: isochronous controller, the first signal optical fibre, multiple first passive optical branching devices, multiple
Wireless signal transmitting-receiving node, multiple second passive optical branching devices, second signal optical fiber；
The isochronous controller receives control instruction for generating, and passes through the first signal optical fibre and the first passive optical branching device, hair
It is corresponding and need in multiple wireless signal transmitting-receiving nodes of return pulse signal to give first passive optical branching device
Current radio signal transmitting-receiving node；
The current radio signal transmitting-receiving node, for receiving multiple wireless communication nodes of the wireless communication group column while sending out
The first pulse signal sent, and the first communicating light signal is generated according to first pulse signal；
Second passive optical branching device, the first communicating light signal sent for receiving corresponding wireless signal transmitting-receiving node, and
It is sent to the second signal optical fiber.
2. wireless communication system according to claim 1, which is characterized in that the current radio signal transmitting-receiving node receives
After finishing first pulse signal, the isochronous controller is also used to generate reception halt instruction, and is sent to described current
Wireless signal transmitting-receiving node, the current radio signal transmitting-receiving node stop receiving first pulse signal.
3. wireless communication system according to claim 2, which is characterized in that
The isochronous controller is also used to generate connecting and receives instruction, is sent to connecing for the current radio signal transmitting-receiving node
Continuous wireless signal transmitting-receiving node；
The wireless signal transmitting-receiving node that connects starts the first pulse signal for receiving multiple wireless communication nodes while sending, raw
At the first communicating light signal；
Second passive optical branching device, for receiving corresponding first Communication ray for connecting wireless signal transmitting-receiving node and sending
Signal, and it is sent to the second signal optical fiber.
4. wireless communication system according to claim 3, which is characterized in that the wireless signal receives and dispatches chain further include:
Second Optical Communication Terminal is connected with the second signal optical fiber, first sent for handling the second signal optical fiber
Communicating light signal.
5. wireless communication system according to claim 1, which is characterized in that the wireless communication node includes: the first light
Electric transducer, first frequency generator, the first modulator, the first power amplifier and first antenna；
First photoelectric converter, the branch optical signal sent for receiving the optical splitter, by the branch optical signal
It is converted to the first electric signal, is sent to first modulator；
The first frequency generator is sent to first modulator for generating frequency signal；
It is synchronous to generate first for modulating according to by first electric signal into the frequency signal for first modulator
Driving signal, and it is sent to first power amplifier；
First power amplifier generates the synchronous drive of amplification first for amplifying to first synchronized signal
Dynamic signal；
The first antenna, for sending the first pulse signal according to the first synchronized signal of the amplification.
6. wireless communication system according to claim 5, which is characterized in that the wireless signal transmitting-receiving node includes:
Two antennas, low-noise amplifier, frequency mixer, second frequency generator, limiting amplifier, the second modulator and the second photoelectric conversion
Device；
Second antenna, the first pulse for receiving multiple wireless communication nodes of the wireless communication group column while sending
Signal；
The low-noise amplifier, it is raw for received first pulse signal of second antenna to be carried out low noise enhanced processing
At processing pulse signal, and it is sent to the frequency mixer；
The second frequency generator is sent to the frequency mixer for generating frequency signal；
The frequency mixer, for frequency signal processing to be mixed electric signal according to the processing pulse signal；
The limiting amplifier generates amplification electric signal for the mixing electric signal to be carried out limited range enlargement processing；
Second modulator generates the first communication electric signal for the amplification electric signal to be carried out protocol conversion；
Second photoelectric converter, for the first communication electric signal to be converted to the first communicating light signal.
7. wireless communication system according to claim 6, which is characterized in that the wireless signal transmitting-receiving node further includes
Two power amplifiers；
First signal optical fibre, is also used to transmit second signal optical signal；
The multiple first passive optical branching device, be respectively used to by the second signal optical signal of first signal transmission by optical fiber into
Row processing, obtains branch's optical signal；
Second photoelectric converter is also used to receive branch's optical signal of corresponding first passive optical branching device transmission, will
Branch's optical signal is converted to the second electric signal, is sent to second modulator；
The second frequency generator, is also used to generate frequency signal, is sent to second modulator；
Second modulator is also used to receive synchronous send that the isochronous controller is sent and instructs, sent out according to the synchronization
It send instruction to modulate second electric signal into the frequency signal, generates the second synchronized signal, and be sent to described
Second power amplifier；
Second power amplifier is also used to amplify second synchronized signal, and it is synchronous to generate amplification second
Driving signal；
Second antenna is also used to send the second pulse signal according to second synchronized signal, thus wireless signal
Each wireless signal transmitting-receiving node of chain is received and dispatched under the control of the isochronous controller while synchronous transmission is identical described
Second pulse signal.
8. wireless communication system according to claim 7, which is characterized in that the wireless communication group column include signal processing
Device is connected with the multiple wireless communication node respectively；
Each first antenna of the multiple wireless communication node is also used to receive what the wireless signal transmitting-receiving node was sent
Second pulse signal；
First modulator is also used to demodulate second pulse signal, generates the second communication electric signal；
First photoelectric converter, the second communication electric signal for being also used to correspond to the generation of the first demodulator generate the second communication
Optical signal；
The signal processor, the second communicating light signal sent for receiving each described wireless communication node respectively, and
Processing is filtered to receive optical signal.
9. wireless communication system according to claim 8, which is characterized in that the wireless communication group column further include:
Second group of column optical fiber, is connected with the signal processor, is used for transmission the reception light letter that the signal processor is sent
Number.
10. wireless communication system according to claim 9, which is characterized in that the wireless communication group column further include:
First Optical Communication Terminal is connected with second group of column optical fiber, the reception sent for handling second group of column optical fiber
Optical signal.
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| CN110673034A (en) * | 2019-10-31 | 2020-01-10 | 许昌中科森尼瑞技术有限公司 | High-voltage motor monitoring system based on optical fiber power supply and wireless communication |
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| US6925263B2 (en) * | 2001-09-28 | 2005-08-02 | Intel Corporation | Method and apparatus for transmission of upstream data in an optical network |
| CN1212712C (en) * | 2002-01-30 | 2005-07-27 | 上海贝尔有限公司 | Distributed wavelength multiplexing multi-walength optical network system |
| WO2004111707A2 (en) * | 2003-06-12 | 2004-12-23 | Ubi Systems, Inc. | Converting signals in passive optical networks |
| CN101001121A (en) * | 2007-01-09 | 2007-07-18 | 湖南大学 | Simple structure mm wave demodulation method and system of radio-on-fibre communication |
| CN103095372A (en) * | 2013-01-11 | 2013-05-08 | 武汉邮电科学研究院 | Time-division multiplex passive optical network system and communication method based on multi-core optical fiber |
| JP2016100855A (en) * | 2014-11-26 | 2016-05-30 | 富士通株式会社 | Transmission device, reception device, and communication method |
| CN105763257B (en) * | 2016-04-25 | 2018-08-17 | 北京科技大学 | A kind of high ferro communication system |
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| CN107528609B (en) * | 2017-10-20 | 2019-05-31 | 北京凤凰汇通科技有限公司 | Wireless communication system |
| CN207354281U (en) * | 2017-10-20 | 2018-05-11 | 北京凤凰汇通科技有限公司 | Wireless communication system |
| CN207354265U (en) * | 2017-10-20 | 2018-05-11 | 北京凤凰汇通科技有限公司 | Radio communication device and wireless communication group row |
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