CN105703828A - Infrared laser communication system - Google Patents
Infrared laser communication system Download PDFInfo
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- CN105703828A CN105703828A CN201610040948.9A CN201610040948A CN105703828A CN 105703828 A CN105703828 A CN 105703828A CN 201610040948 A CN201610040948 A CN 201610040948A CN 105703828 A CN105703828 A CN 105703828A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/11—Arrangements specific to free-space transmission, i.e. transmission through air or vacuum
- H04B10/112—Line-of-sight transmission over an extended range
- H04B10/1123—Bidirectional transmission
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Abstract
The invention discloses an infrared laser communication system, and the system comprises a data input processing module which is used for carrying out the clock domain conversion, data multiplexing, framing and parallel-series conversion of parallel data, and enabling a processed serial data signal to be outputted; a modulation module which is used for modulating a digital signal generated by the data input processing module into an analog signal for output; a light transmitting module which is used for converting the analog signal into an infrared laser signal and transmitting the infrared laser signal to an atmosphere channel; a light receiving module which is used for receiving the infrared laser signal from the atmosphere channel, carrying out the photoelectric conversion and filtering amplification of the received infrared laser signal, and forming an analog electric signal for output; a demodulation module which is used for demodulating an electric signal into a digital signal for output; and a data output processing module which is used for the clock extraction, deframing, series-parallel conversion, data demultiplexing, clock domain conversion and parallel-series conversion of the digital signal for output.
Description
Technical field
The present invention relates to wireless communication technology field, particularly relate to a kind of iraser communication system。
Background technology
Optic communication is to utilize light wave as the communication technology of information carrier。Wired and wireless two kinds can be divided into。Space optical communication can be generally divided into: Aerospace Satellite laser communication, lasercom and underwater laser communication。Lasercom is the carrier utilizing laser beam to transmit as information, is made directly the bi-directionally transmitted of the information such as voice, data, image in space with air for transmission medium。Infrared communication technology is a kind of novel communication system architecture proposed at wireless communication field recent years, and achieve noticeable progress, cause the huge concern and broad interest that include the electronic applications such as military communication, PMC, microelectronics and computer。The performance of whole system is played vital effect as the critical piece of infrared communication system by infrared light supply and photodetector。Domestic and international each research department is except studying infrared communication system entirety, and the research also ratio of infrared light supply and photodetector is more prominent。The research of lasercom is that the aspects such as hybrid satellite, aircraft, ground carry out in the world, is engaged in the principal organ of this respect research in U.S., European and Japanese。Such as US Airways space travel office (NASA) and USAF；The Postal Service Ministry's Communication Studies room (CTL) of Japan and NASDA (NASDA)；These great institutions such as the European Space Agency (ESA) in Europe are monopolized。It is 850nm that Photoelectric Technology Inst., Chinese Academy of Sciences have developed operation wavelength, it is possible to two product of transmission two kinds of distances of 1km, 4km。Shanghai ray machine institute, in 1999 and 2000, is proposed the communication model machine of 34Mb/s and 155Mb/s respectively, and communication distance is 1 to 2km。
The advantage of iraser wireless communication technology and advantage are that the huge advantage of the use of its high secrecy row and bandwidth channel, are that other means of communication are not commeasurable, and its capacity of resisting disturbance is also very prominent。But implementing product really exists the shortcomings such as structure complexity, poor stability, transmission range be short。Additionally, this communication technology is mainly used in military research aspect at present, and communication mode is single。
Therefore, it is necessary to existing iraser communication technology to be improved the many disappearances overcoming prior art to exist, become the difficult problem that current industry is urgently captured in fact。
Summary of the invention
In view of the disappearance of above-mentioned prior art, one of present invention purpose is in that to provide a kind of iraser communication system, and it can realize signal high-speed transfer, simplification product structure, promotion signal stability, increase signal transmission distance。
Another object of the present invention is in that to provide a kind of iraser communication system, and it can realize serial ports and or parallel data communication。
For reaching above-mentioned and other purpose, the present invention proposes a kind of iraser communication system, including: data input processing module, receive the serial data of serial ports input, received serial data is gone here and there-and conversion processing, clock zone conversion process, data-reusing process, framing process and also-string conversion process, and the digital signal output that will produce after processing；Modulation module, being used for this digital signal modulated is analog electrical signal output；Light emission module, for launching to atmospheric channel after this analog electrical signal is transformed to iraser signal；Optical Receivers, for receiving iraser signal from atmospheric channel, and is undertaken received iraser signal forming analog electrical signal output after light-to-current inversion and filter amplifying processing；And data output processing module, for receiving the digital signal of this demodulation module output, and this digital signal is carried out Clock Extraction, solve frame and process, output after string-conversion processing, data demultiplexing process, clock zone conversion process and also-string conversion process。
It is preferred that this data input processing module includes: string-conversion module, for the converting serial data that serial ports inputs is become parallel data；Clock zone conversion module, for exporting after this parallel data carries out clock zone conversion；Data-reusing module, for exporting after the parallel data after this clock zone conversion module processes is carried out time division multiplex process；Framing module, for output after adding frame sync head in the parallel data of output after this data-reusing resume module；And also-string conversion module, for the parallel data after this framing resume module being transformed to serial data output。
It is preferred that this data output processing module includes: Clock Extraction module, for extracting clock signal in the digital signal that this demodulation module exports；Solve frame module, for carrying out this digital signal solving frame process under this clock signal effect, form the output of former data signal；String-and conversion module, for being undertaken this former data signal going here and there-and conversion process export to form parallel data；Data demultiplexing module, for carrying out time-division demultiplexing process by the parallel data that this string-conversion module export；Clock zone conversion module, for carrying out clock zone conversion process by the parallel data of output after this data demultiplexing module processes；And-string conversion module, for the parallel data of output after this clock zone conversion module processes is transformed to serial data output。
It is preferred that this light emission module includes: electro-optical conversion module, for the analog electrical signal that modulation module exports being transformed to the output of iraser signal；And transmitting antenna, for this iraser signal is launched to atmospheric channel。
It is preferred that this Optical Receivers includes: light detection module, for detecting the iraser signal from atmospheric channel, and detected iraser signal is transformed to signal of telecommunication output；And filter and amplification module, for this signal of telecommunication is filtered processing and amplifying。
The present invention also proposes another iraser communication system, including: data input processing module, receive the serial data of serial ports input and the parallel data of parallel port input, received serial data is gone here and there-and conversion processing formation parallel data, and the parallel data of the parallel data formed after this conversion and parallel port input is carried out clock zone conversion process, data-reusing processes, framing processes and also-string conversion process, and the digital signal that produces exports after processing；Modulation module, being used for this digital signal modulated is analog electrical signal output；Light emission module, for launching to atmospheric channel after this analog electrical signal is transformed to iraser signal；Optical Receivers, for receiving iraser signal from atmospheric channel, and is undertaken received iraser signal forming analog electrical signal output after light-to-current inversion and filter amplifying processing；Demodulation module, for being demodulated into digital signal output by the analog electrical signal that this Optical Receivers exports；And data output processing module, for receiving the digital signal of this demodulation module output, and this digital signal is carried out Clock Extraction, solve frame and process, output after string-conversion processing, data demultiplexing process, clock zone conversion process and/or also-string conversion process。
It is preferred that this data input processing module includes: string-conversion module, the converting serial data for serial ports input becomes parallel data；Clock zone conversion module, for exporting after the parallel data of the parallel data of this string-conversion module output and parallel port input is carried out clock zone conversion；Data-reusing module, for exporting after the parallel data after this clock zone conversion module processes is carried out time division multiplex process；Framing module, for output after adding frame sync head in the parallel data of output after this data-reusing resume module；And also-string conversion module, for the parallel data after this framing resume module being transformed to the digital signal output of serial data。
It is preferred that this data output processing module includes: Clock Extraction module, for extracting clock signal in the digital signal that this demodulation module exports；Solve frame module, for carrying out this digital signal solving frame process under this clock signal effect, form the output of former data signal；String-and conversion module, for being undertaken this former data signal going here and there-and conversion process export to form parallel data；Data demultiplexing module, for carrying out time-division demultiplexing process by the parallel data that this string-conversion module export；Clock zone conversion module, for the parallel data of output after this data demultiplexing module processes is carried out clock zone conversion process, in order to parallel data is directly output to parallel port, maybe sends this parallel data to also-string conversion module；And also-string conversion module, export to serial ports for the parallel data of output after this clock zone conversion module processes is transformed to serial data。
Realize it is also preferred that the left above-mentioned data input processing module, data output processing module are through FPGA (Field-ProgrammableGateArray, field programmable gate array)。
Compared with prior art, the present invention mainly through data input/output processing module to serial data and or parallel data process, to change the clock zone of data, promote data transmission bauds。Additionally, the present invention provides serial data, parallel data communication, be available for user carry out follow-up practical application scene carry out serial interface communication mode and/or Parallel Interface Communication model selection, communication pattern is no longer single。Furthermore, the present invention adopts FPGA to realize data input, data output processing, and then can simplify product structure, promotion signal stability, reduces signal error rate, promotion signal transmission range。And the present invention is filtered processing and amplifying in advance at the signal receiving end optical signal to receiving, so can promotion signal sensitivity, reduce signal noise。
Accompanying drawing explanation
Below by the way of clearly understandable, accompanying drawings preferred implementation, the above-mentioned characteristic of a kind of iraser communication system, technical characteristic, advantage and implementation thereof are further described。
Fig. 1 is the basic framework schematic diagram of the iraser communication system first embodiment of the present invention；
Fig. 2 is signal sending end system architecture diagram in embodiment illustrated in fig. 1 of the present invention；
Fig. 3 is signal receiving end system architecture diagram in embodiment illustrated in fig. 1 of the present invention；And
Fig. 4, Fig. 5 be respectively the present invention iraser communication system the second embodiment in signal sending end system architecture diagram and signal receiving end system architecture diagram。
Drawing reference numeral illustrates:
10 data input processing module, 11. modulation module, 12. light emission module, 13. Optical Receivers, 14 demodulation modules, 15. data output processing module, 100. string-conversion module, 101. clock zone conversion module, 102. data-reusing module, 103. framing module, 104. also-string conversion module, 120. electro-optical conversion module, 121. transmitting antenna, 130. light detection module, 131. filter and amplification module, 150. Clock Extraction module, 151. solution frame module, 152. string-conversion module, 153. data demultiplexing module, 154. clock zone conversion module, 155. also-string conversion module, 10'. data input processing module, 15'. data output processing module。
Detailed description of the invention
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below comparison accompanying drawing is illustrated the specific embodiment of the present invention。It should be evident that the accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the premise not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings, and obtain other embodiment。
For making simplified form, only schematically show part related to the present invention in each figure, they do not represent its practical structures as product。It addition, so that simplified form readily appreciates, some figure has the parts of identical structure or function, only symbolically depict one of them, or only mark one of them。In this article, " one " not only represents " only this ", it is also possible to represent the situation of " more than one "。
The present invention proposes a kind of iraser communication system, for serial data (speech data of such as telephone system, the serial data of data terminal equipment), parallel data (such as vedio data, for instance EPP interface data) communication。Refer to Fig. 1, for first embodiment of the invention shownschematically iraser communication system basic framework schematic diagram。As shown in Figure 1, this iraser communication system includes: data input processing module 10, modulation module 11, optical transmission module 12, Optical Receivers 13, demodulation module 14 and data output processing module 15, wherein, data input processing module 10, modulation module 11 and optical transmission module 12 form the transmitting terminal of this communication system, and Optical Receivers 13, demodulation module 14 and data output processing module 15 form the receiving terminal of this communication system。Hereinafter namely the logical relation between those modules and Operational Mechanisms are described in detail。
Data input processing module 10 is used for receiving the serial data that outside serial ports (serial ports a as shown in Figure 2, serial ports b, serial ports c) inputs, and received serial data is performed string-conversion process, clock zone conversion process, data-reusing processes, framing processes and after also-string conversion process, generation digital signal exports。
Modulation module 11, is connected with data input processing mould 10 pieces, and the digital signal modulated produced for entering data into processing module 10 is analog electrical signal output。
Light emission module 12, is connected with modulation module 11, for sending to atmospheric channel after the analog electrical signal that modulation module exports is transformed into iraser signal。
Optical Receivers 13, receives the iraser signal from atmospheric channel, and forms analog electrical signal output after received iraser signal execution light-to-current inversion and filter amplifying processing。
Demodulation module 14, is connected with Optical Receivers 13, for the analog electrical signal that Optical Receivers 13 exports is demodulated into digital signal output。
Data output processing module 15, it is connected with demodulation module 14, for receiving the digital signal of demodulation module 14 output, and this digital signal is carried out Clock Extraction, solve frame and process, output after string-conversion processing, data demultiplexing process, clock zone conversion process and also-string conversion process。
Seeing also Fig. 2, it is each inside modules structural representation of signal sending end of Fig. 1 of the present invention shownschematically iraser communication system。As shown in Figure 2, data input processing module 10 farther includes string-conversion module 100, clock zone conversion module 101, data-reusing module 102, framing module 103 and also-string conversion module 104, wherein string-conversion module 101 are connected with outside serial ports a, serial ports b and serial ports c, receive the serial data of those serial ports input, and be that parallel data is sent to clock zone conversion module 101 by received converting serial data；Clock zone conversion module 101 exports to data-reusing module 102 after received parallel data is carried out clock zone conversion process；The parallel data that clock zone conversion module 101 exports is carried out time division multiplex and processes and multichannel data is multiplexed to a circuit-switched data exports to framing module by data-reusing module 102
103；Data-reusing module 102 is exported after a circuit-switched data adds frame sync head and exports to parallel-serial converter module 104 by framing module 103；The data adding frame synchronization head that framing module 103 is exported by parallel-serial converter module 104 are transformed into serial data output。
Being speech data for the serial data of outside serial ports input, in the data input processing module 10 shown in above-mentioned Fig. 2, the multi-path voice data of input are transformed to parallel data output by string-conversion module 100, and each channel parallel data speed is such as 8kbps；Clock zone conversion module 101, by the conversion of parallel data clock territory that this speed is 8kbps, is converted into the parallel data of such as 12.5Mbps, and then completes the rate-matched of asynchronous signal, and signaling rate can be substantially improved；Multichannel 8kbps data are carried out time division multiplex process so that multichannel 8kbps data are carried out multiple connection with the clock signal of 12.5MHz by data-reusing module 102 afterwards, form a circuit-switched data, then frame sync head is added by the framing module 103 circuit-switched data after this multiple connection, such as adding 13 at this circuit-switched data head is Barker code, for Frame Synchronization Test。
In the present embodiment, above-mentioned clock zone conversion module 101 is such as FIFO (FirstInputFirstOutput) double port buffers。Above-mentioned data input processing module 10 entirety can be realized by FPGA (Field-ProgrammableGateArray) device。
Please continue to refer to Fig. 2, optical transmission module 12 farther includes electro-optical conversion module 120, for the analog electrical signal of modulation 11 output is transformed to iraser signal；And transmitting antenna 121 is by this iraser signal transmitting to atmospheric channel。In the present embodiment, electro-optical conversion module 120 is a laser modulation circuit, it includes laser instrument and drive circuit, and drive circuit is driven and then make laser instrument to send iraser by above-mentioned analog electrical signal, and sends it in atmospheric channel through transmitting antenna and be transmitted。This laser instrument can be selected for such as ultraviolet LED lamp as illuminating source, and under the effect of drive circuit, this light source can produce the iraser of such as 1550nm wavelength。This drive circuit adopts DC driven mode, has the several modulation rate advantages of higher of motility compared with the fluorescent lamp that prior art uses exchange type of drive。
Seeing also Fig. 3, it shows each inside modules structural representation of the signal receiving end of iraser communication system shown in Fig. 1 of the present invention。As it is shown on figure 3, Optical Receivers 13 farther includes light detection module 130, for detecting the iraser signal from atmospheric channel, and detected iraser signal is transformed to analog electrical signal output；And filter and amplification module 131, for being filtered by the analog electrical signal that light detection module 130 exports, signal processing and amplifying, and then filter the noise interferences in received signal。
As it is shown on figure 3, the data output processing module 15 shown in Fig. 1 farther includes Clock Extraction module 150, solution frame module 151, string-conversion module 152, data demultiplexing module 153, clock zone conversion module 154 and also-string conversion module 155。Wherein, Clock Extraction module 150 extracts clock signal in the digital signal that demodulation module 14 exports；Solve frame module 151 to carry out the digital signal of demodulation module 14 output solving frame process (the i.e. frame synchronization head in detection digital signal under clock signal effect under this clock signal effect, if frame synchronization head being detected, then represent the beginning of frame data, then in this digital signal, recover the former data signal after frame synchronization head), to produce the output of former data signal；This former data signal is carried out converting to produce a channel parallel data by string-conversion module 152, and a channel parallel data is carried out solving time division multiplex and processes a channel parallel data taps into multichannel data output by data demultiplexing module 153；Clock zone conversion module 154 demultiplexes the data into the multichannel data of module 153 output and carries out clock zone conversion process；And the multichannel data that this clock zone conversion module 154 is exported by-string conversion module 155 carries out parallel serial conversion process respectively to form the output of multi-path serial data。
In the embodiment shown in Fig. 3, clock zone conversion module 154 is identical with clock zone conversion module 101 structure shown in above-mentioned Fig. 2, it is FIFO double port buffers, in figure 3, the clock zone conversion module 154 being positioned at signal receiving end is that the 12.5Mbps speech data such as received is transformed to such as 8kbps speech data。Above-mentioned data output processing module 15 entirety also can be realized by FPGA device。
The present invention also proposes the second embodiment of iraser communication system, the iraser communication system of the present embodiment also includes data input processing module 10', modulation module 11, light emission module 12, Optical Receivers 13, demodulation module 14 and data output processing module 15', wherein data input processing module 10', modulation module 11, light emission module 12 forms the signal sending end of this system, and Optical Receivers 13, demodulation module 14 and data output processing module 15' form the signal receiving end of this system, the modulation module 11 that the present embodiment is disclosed, light emission module 12, Optical Receivers 13, the modulation module that demodulation module 14 is disclosed with above-mentioned first embodiment, light emission module, Optical Receivers, the operation principle of demodulation module is identical, therefore no longer repeat for literary composition at this。It is different in that with the embodiment shown in above-mentioned Fig. 1, the disclosed iraser communication system of the present embodiment can receive serial ports input and parallel port input, and the data processing method of the data input processing module 10' and data output processing module 15' of corresponding the present embodiment is slightly different with Fig. 1 shownschematically data input processing module 10 and data output processing module 15。The parallel data that the serial data that serial ports inputs and parallel port input can be handled as follows by the data input processing module 10' of the present embodiment: the converting serial data first inputted by serial ports is parallel data, and the parallel data of the parallel data after conversion and parallel port input carries out clock zone conversion process, data-reusing process, framing process and also-string conversion process afterwards。The data received at signal receiving end may be from opposite end (signal sending end of another iraser communication system) and send serial ports input data and/or the parallel data of parallel port input, correspondingly, in the data output processing module 15' of the present embodiment in data after clock zone converts, or send either directly through parallel port, or again pass by and sent by serial ports after-string conversion。
Refer to Fig. 4 and Fig. 5, signal sending end that respectively second embodiment of the invention is disclosed, the internal structure schematic diagram of signal receiving end。As shown in Figure 4, the disclosed data input processing module 10' of above-mentioned second embodiment farther includes: string-conversion module 100, be used for receiving outside serial ports (serial ports a, b, c of such as diagram ... .) serial data that inputs；Parallel data that clock zone conversion module 101' exports for receiving string-conversion module and parallel port (the parallel port d of such as diagram ... .) parallel data that inputs, and received multidiameter delay data are carried out clock zone conversion process, this clock zone conversion module is such as FIFO both-end buffer, each road speed such as can be transformed into, for the parallel data of 8kbps, the parallel data that speed is 12.5Mbps by it, and then completes the rate-matched of asynchronous signal；Data-reusing module 102, for carrying out time division multiplex process by the multichannel data that clock zone conversion module 101' exports, so that multichannel data to be multiplexed to a circuit-switched data output；Framing module 103, circuit-switched data data-reusing module 102 exported exports after adding frame sync head；And-string conversion module 104, the data adding frame sync head are transformed to serial data output。The serial data signal of data input processing module 10' output is modulated to analog electrical signal after being modulated module 11, optical transmission module 12 this analog electrical signal is transformed to the iraser signal that such as wavelength is 1550nm and launches to atmospheric channel。
Please continue to refer to Fig. 5, signal receiving end described in second embodiment of the invention includes Optical Receivers 13, demodulation module 14 and data output processing module 15', owing to Optical Receivers 13, demodulation module 14 Optical Receivers 13 disclosed with first embodiment, demodulation module 14 are identical, therefore do not repeat them here。As it is shown in figure 5, data input processing module 15' farther includes: Clock Extraction module 150, for extracting clock signal (such as 12.5MHz) in the digital signal of demodulation module 14 output；Solve frame module 151, the digital signal of demodulation module 14 output carries out solve frame process under this clock signal effect (solve frame to recover former data signal and process the frame synchronization head namely detecting in digital signal under clock signal effect, if detecting, then represent the beginning of frame data, former data signal can be recovered in this digital signal)；String-conversion module 152, be transformed into parallel data output by this former data signal；Data demultiplexing module 153, for being undertaken the parallel data that string-conversion module 152 export solving time division multiplex process so that this parallel data to tap into multichannel data output；Clock zone conversion module 154', multichannel data for demultiplexing the data into module 153 output is sent directly to parallel port (such as parallel port d of the diagram) output after carrying out clock zone conversion process (such as the data of the 12.5Mbps on each road being transformed to 8Kpbs data), or multichannel data is transformed into the transmission of multi-path serial data is exported to serial ports (serial ports a, b, c of such as diagram) through also-string conversion module 155。
The data input processing module of the present embodiment, data output processing module realize also through FPGA, for Fig. 5 shownschematically signal receiving end, at receiving terminal, the iraser signal from atmospheric channel exports a road 12.5Mbps differential data through Photoelectric Detection, signal filtering processing and amplifying。Only need to defining a holding wire at the internal port of FPGA, differential signal is both threads when FPGA external transmission。If merely desiring to allow a data lines difference output, it is possible to direct it out the difference P pin place of FPGA, select LVDS (Low-VoltageDifferentialSignaling) just passable during distribution pin。In FPGA, difference pin is to occur in pairs, i.e. a corresponding N pin of P pin。This differential data is first sent to clock extracting circuit, extracts the clock signal of 12.5MHz。Data recovery circuit (i.e. above-mentioned solution frame module 151) is to recover former data signal under the effect of 12.5MHz clock。String-conversion are to prepare for justification, and the data input of FIFO is 8。FIFO completes the rate-matched of asynchronous signal。The data of FIFO output, or send either directly through parallel port, or carry out once and-string conversion converts serial data to and passes to telephone system or serial ports again。
It should be noted that, above-described embodiment all can independent assortment as required。The above is only the preferred embodiment of the present invention; it should be pointed out that, for those skilled in the art, under the premise without departing from the principles of the invention; can also making some improvements and modifications, these improvements and modifications also should be regarded as protection scope of the present invention。
Claims (10)
1. an iraser communication system, it is characterised in that including:
Data input processing module, receive serial ports input serial data, received serial data is gone here and there-and conversion processing, clock zone conversion process, data-reusing process, framing process and also-string conversion process after produce digital signal output；
Modulation module, being used for this digital signal modulated is analog electrical signal output；
Light emission module, for launching to atmospheric channel after this analog electrical signal is transformed to iraser signal；
Optical Receivers, for receiving iraser signal from atmospheric channel, and is undertaken received iraser signal forming analog electrical signal output after light-to-current inversion and filter amplifying processing；
Demodulation module, for being demodulated into digital signal output by the analog electrical signal that this Optical Receivers exports；And
Data output processing module, for receiving the digital signal of this demodulation module output, and this digital signal is carried out Clock Extraction, solve frame and process, output after string-conversion processing, data demultiplexing process, clock zone conversion process and also-string conversion process。
2. iraser communication system as claimed in claim 1, it is characterised in that: this data input processing module includes:
String-conversion module, for becoming parallel data by the converting serial data that serial ports inputs；
Clock zone conversion module, for exporting after this parallel data carries out clock zone conversion；
Data-reusing module, for exporting after the parallel data after this clock zone conversion module processes is carried out time division multiplex process；
Framing module, for output after adding frame sync head in the parallel data of output after this data-reusing resume module；And
And-string conversion module, for the parallel data after this framing resume module being transformed to the digital signal output of serial data。
3. iraser communication system as claimed in claim 1, it is characterised in that: this light emission module includes:
Electro-optical conversion module, for being transformed to the output of iraser signal by the analog electrical signal that modulation module exports；And
Transmitting antenna, for launching this iraser signal to atmospheric channel。
4. iraser communication system as claimed in claim 1, it is characterised in that: this Optical Receivers includes:
Light detection module, for detecting the iraser signal from atmospheric channel, and is transformed to signal of telecommunication output by detected iraser signal；And
Filter and amplification module, for being filtered processing and amplifying by this signal of telecommunication。
5. iraser communication system as claimed in claim 1, it is characterised in that: this data output processing module includes:
Clock Extraction module, for extracting clock signal in the digital signal that this demodulation module exports；
Solving frame module, the digital signal for this demodulation module being exported under this clock signal effect carries out solving frame and processes, and forms the output of former data signal；
String-and conversion module, for being undertaken this former data signal going here and there-and conversion process export to form parallel data；
Data demultiplexing module, for carrying out time-division demultiplexing process by the parallel data that this string-conversion module export；
Clock zone conversion module, for carrying out clock zone conversion process by the parallel data of output after this data demultiplexing module processes；And
And-string conversion module, for the parallel data of output after this clock zone conversion module processes is transformed to serial data output。
6. an iraser communication system, it is characterised in that including:
Data input processing module, receive the serial data of serial ports input and the parallel data of parallel port input, received serial data is gone here and there-and conversion processing formation parallel data, and carry out clock zone conversion process to the parallel data formed after converting and through the parallel data of parallel port input, data-reusing processes, framing processes and also-string conversion process, and the serial digital signal that produce exports after processing；
Modulation module, the digital signal modulated for being produced by this data input processing module is analog electrical signal output；
Light emission module, for launching to atmospheric channel after this analog electrical signal is transformed to iraser signal；
Optical Receivers, for receiving iraser signal from atmospheric channel, and is undertaken received iraser signal forming analog electrical signal output after light-to-current inversion and filter amplifying processing；
Demodulation module, for being demodulated into digital signal output by the analog electrical signal that this Optical Receivers exports；And
Data output processing module, for receiving the digital signal of this demodulation module output, and this digital signal is carried out Clock Extraction, solve frame and process, output after string-conversion processing, data demultiplexing process, clock zone conversion process and/or also-string conversion process。
7. iraser communication system as claimed in claim 6, it is characterised in that: this data input processing module includes:
String-conversion module, for becoming parallel data by the converting serial data that serial ports inputs；
Clock zone conversion module, for the parallel data this string-conversion module exported and output after the parallel data of parallel port input carries out clock zone conversion；
Data-reusing module, for exporting after the parallel data after this clock zone conversion module processes is carried out time division multiplex process；
Framing module, for output after adding frame sync head in the parallel data of output after this data-reusing resume module；And
And-string conversion module, for the parallel data after this framing resume module being transformed to serial data output。
8. iraser communication system as claimed in claim 6, it is characterised in that: this light emission module includes:
Electro-optical conversion module, for being transformed to the output of iraser signal by the analog electrical signal that modulation module exports；And
Transmitting antenna, for launching this iraser signal to atmospheric channel。
9. iraser communication system as claimed in claim 6, it is characterised in that: this Optical Receivers includes:
Light detection module, for detecting the iraser signal from atmospheric channel, and is transformed to signal of telecommunication output by detected iraser signal；And
Filter and amplification module, for being filtered processing and amplifying by this signal of telecommunication。
10. iraser communication system as claimed in claim 6, it is characterised in that: this data output processing module includes:
Clock Extraction module, for extracting clock signal in the digital signal that this demodulation module exports；
Solve frame module, for carrying out this digital signal solving frame process under this clock signal effect, form the output of former data signal；
String-and conversion module, for being undertaken this former data signal going here and there-and conversion process export to form parallel data；
Data demultiplexing module, for carrying out time-division demultiplexing process by the parallel data that this string-conversion module export；
Clock zone conversion module, for the parallel data of output after this data demultiplexing module processes is carried out clock zone conversion process, in order to this parallel data is directly output to parallel port, maybe sends this parallel data to also-string conversion module；
And-string conversion module, export to serial ports for the parallel data of output after this clock zone conversion module processes is transformed to serial data。
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| CN111934780A (en) * | 2020-10-19 | 2020-11-13 | 鹏城实验室 | Optical communication transmitter, optical communication receiver, and optical communication system |
| WO2022110101A1 (en) * | 2020-11-30 | 2022-06-02 | 中国科学院微电子研究所 | Photoelectric detection device having closed design and capable of preventing distortion of optical signals and implementation method therefor |
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