CN109819425A - V-band high-speed digital transmission near field communication system - Google Patents
V-band high-speed digital transmission near field communication system Download PDFInfo
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Abstract
A kind of V-band high-speed digital transmission near field communication system of disclosure of the invention, it is desirable to provide a kind of data transmission rate is high, and the bit error rate is low, highly reliable Data transfer system.The present invention is achieved through the following technical solutions: equipment platform end module and vehicle-mounted end module handle coding and the modulation that module completes number communication breath by respective communications baseband respectively, complete up-conversion through respective antenna and channel module, radiate to space；Finally, after equipment platform end module receives the wireless signal from vehicle-mounted end module using the antenna and channel module of itself, the downconverted communications baseband processing module for giving itself completes demodulation decoding, and give data to equipment platform information processing and control system, vehicle-mounted end module receives the wireless signal from the transmitting of equipment platform end module also by the antenna and channel module of itself simultaneously, completes the two-way 50Mbps full duplex radio data transmission in the dynamic range that operating distance is 10cm to 30m.
Description
Technical field
The present invention relates to a kind of short-range communication (NFC), Highspeed Data Transmission Technology can especially realize V-band short distance
High-speed digital transmission near field communication system.
Background technique
Low coverage wireless communication (NFC) is also known as near-field communication, is a kind of measured short-distance wireless interconnection technique, Neng Gou
Simple and safety two-way interactive is realized between multiple electronic equipments.Under normal conditions, two side of transceiver communication utilizes radio wave
Information is transmitted, and can be transmitted within the scope of tens meters, short-distance wireless communication, alternatively referred to as short haul connection skill can be all called
Art.The propagation conditions of wireless communication system is usually divided into two kinds of environment of sighting distance (LOS) and non line of sight (NLOS).Line of sight conditions
Under, wireless signal straightline propagation unobstructedly between transmitting terminal and receiving end, this is required in first Fresnel zone (First
Fresnel zone) in the object blocked is not caused to radio wave, if condition is unsatisfactory for, signal strength will it is obvious under
Drop.The size of Fresnel region depends on the frequency and distance between transmitter and receiver of radio wave.Utilize the nothing in the way of line-of-sight propagation
Line electric wave carries out the communication of information transmission, as horizon communication.Electric wave will receive ground when being propagated in a manner of line-of-sight propagation
Face and ground object are to the diffraction of electric wave, reflection and scattering, and atmosphere is to the refraction of electric wave, reflection, absorption and scattering, and by it
Caused signal amplitude declines, mostly through delay, arrival angle fluctuation and depolarization phenomenon.And in the case where there is barrier, wirelessly
Signal can only reach receiving end by reflection, scattering and diffraction mode, and we term it non line-of-sight communications.Wireless signal at this time
It is received through a variety of ways, and multipath effect can bring asynchronous time delay, signal decaying, polarization changes, link is unstable etc.
A series of problems.Traditional short-range transmission rapid deployment and real-time portion based on limited cable, for task mostly
Administration has a direct impact.Nowadays the information security of transmission is increasingly paid attention to, then to the flexibility ratio of transmission and security requirement
It is higher and higher, directly replace limited cable transmission according to general wireless transmitting system, is highly prone to the electromagnetism of ambient enviroment
The accuracy and reliability of interference effect, data transmission not can guarantee yet.Convince in view of channel radio of the people to high-speed high-quality amount
The demand of business, wireless transmission rate have also developed to Mbps via initial Kbps, and higher better wireless transmission also must be
The trend of unlimited technology development.Wireless data sending is distinguished by transmission rate, is divided into low speed digital transmission module and high-speed digital transmission module two is big
Class, the carrier frequency that low speed digital transmission module uses is lower, generally all in these frequency ranges of 315MHz, 433MHz and 915MHz, so
Typically up to transmission rate is no more than 150kB/s.But these use the wireless device of uhf band, and carrier wave still has certain
It penetrates and diffracting power, relatively far away from, maximum up to hundreds of meters, this is its advantage to transmitting range, but also has it to deposit admittedly simultaneously
The shortcomings that, because working frequency is low, interference is relatively serious, this technically seriously constrains the rate of data transmission.It needs to mention
High data transmission rate, it is necessary to this frequency range for the environment complexity that avoids interference.In addition, existing wireless technology makes frequency spectrum resource more next
It is more nervous, greatly limit the development of new technology.It for these reasons, can in order to realize that the data of more reliable higher speed are transmitted
To select V-band (60GHz) signal to pass for communicating number, which is not easy to penetrate or diffraction, interference seldom, space
Electromagnetic environment is cleaner, provides the foundation for high-speed digital transmission, but V-band frequency is too high at the same time also limits it using model
It encloses, is only limitted to the unlimited propagation distance at generally about tens meters of line-of-sight distance.V-band signal, can since its wavelength is short, frequency range is wide
Effectively to solve the problems, such as that it is many that high-speed wideband access faces, thus before having a wide range of applications in short-distance wireless communication
Scape.With the fast development of semiconductor technology and technique, the V-band chip of the more highly integrated more preferable price of performance, which has started investment, to be made
With the large-scale application of V-band millimeter wave wireless communication has become possibility.V-band signal belongs to millimeter wave scope, it with it is low
Frequency signal, which is compared, mainly has the following characteristics that (1) frequency spectrum is exempted from license and used；(2) bandwidth is high, and transmission rate is high, and 60GHz's is effective
Bandwidth is 7GHz, the order of magnitude of the data transmission rate up to number Gbps；(3) strong antijamming capability, transmission range is short, and 60GHz has
The propagation characteristic of millimeter wave increases propagation attenuation, simultaneously due to the absorption by rain, air etc. in communication process
Due to its big attenuation characteristic, a possibility that reducing inter-system interference, this but also 60GHz wireless communication in short haul connection side
The safety in face and anti-interference have guarantee very much, are conducive in short distance and small range building network；(4) it is suitble to point-to-point
Wireless communication, does not have wireless through-wall ability；(5) wavelength is short, high gain, small in size.
Summary of the invention
The purpose of the present invention is be directed to prior art sighting distance-short range communication systems terminal due to using the wired company of cable
The problem of connecing, being unfavorable for task rapid deployment and deployed in real time provides a kind of data transmission rate height, and the bit error rate is low, highly reliable V
Frequency range high-speed digital transmission near field communication system.
The present invention solves technical solution used by prior art problem: a kind of V-band high-speed digital transmission near-field communication system
System, comprising: equipment platform information processing and control system, equipment platform end module are mounted on equipment platform turning joint bottom end
The vehicle-mounted end module of side, on-vehicle information integrated treatment platform, it is characterised in that: equipment platform end module and vehicle-mounted end module
Data handle coding and the modulation that module completes number communication breath by respective communications baseband respectively, through respective antenna and channel
Module completes up-conversion, and up-conversion signal radiates after passing through duplexer to V-band plate aerial to space；Finally, equipment platform
It is downconverted to give itself after end module receives the wireless signal from vehicle-mounted end module using the antenna and channel module of itself
Communications baseband processing module complete demodulation decoding, and give data to equipment platform information processing and control system, simultaneously
Vehicle-mounted end module receives the wireless signal from the transmitting of equipment platform end module, warp also by the antenna and channel module of itself
Down coversion and the communications baseband processing module of itself complete modulation demodulation, decoding, give data to on-vehicle information General Office
Platform completes the two-way 50Mbps full duplex radio data transmission in the dynamic range that operating distance is 10cm to 30m.
The present invention has the following beneficial effects: compared with the prior art
Data transmission rate is high, highly reliable.The data of present device platform end module and vehicle-mounted end module pass through respective respectively
Communications baseband handles coding and the modulation that module completes number communication breath, completes up-conversion through respective antenna and channel module, on
Frequency variation signal radiates after passing through duplexer to V-band plate aerial to space, utilizes the property of V-band signal short distance high-speed digital transmission
Can, sighting distance-bidirectional transfer of information is carried out, changes legacy data by the way of cable wire transmission, the task of overcoming is not easy
The problem of rapid deployment, improves the real-time of task development.Using distinctive anti-interference, the anti-intercepting and capturing performance of V-band signal, no
Vulnerable to the electromagnetic interference influence of other frequency band signals, the two-way high reliability high speed test of sighting distance-short distance-and control are not only solved
Function processed, and it is also equipped with preferable " three is anti-" ability, volume, power consumption, weight minimize integrated design.
The bit error rate is low.Equipment platform end module antenna takes narrow beam Sidelobe to design, and increases RS and encodes (Reed-
Solomon codes) it designs and improves the modes such as processing gain, itself antenna and channel mould are utilized by equipment platform end module
After part receives the wireless signal from vehicle-mounted end module, the downconverted communications baseband processing module for giving itself completes demodulation
Decoding, and give data to equipment platform information processing and control system, at the same vehicle-mounted end module also by itself antenna and
Channel module receives the wireless signal from the transmitting of equipment platform end module, and the downconverted communications baseband with itself handles mould
Part completes base band demodulating, decoding, gives data to on-vehicle information integrated treatment platform, completes two-way 50Mbps full duplex radio number
According to transmission, realize short-range communication it is superpower it is anti-interference, anti-detect receipts, anti-intercepting and capturing characteristic, number passes the bit error rates up to 10-8Magnitude.
In present device console module and vehicle-mounted end module, respective antenna and Channel Elements are set using integrated
Meter, miniaturization portable design, low power dissipation design, stand-by time is long, reduces the volume power consumption of equipment, and weight is less than 1.5kg.
Detailed description of the invention
Present invention will be further explained below with reference to the attached drawings and examples.
Fig. 1 is the working principle diagram of V-band high-speed digital transmission near field communication system of the present invention.
Fig. 2 is the control information flow chart of Fig. 1.
Fig. 3 is the equipment platform end module composition block diagram of Fig. 1.
Fig. 4 is the vehicle-mounted end module composition block diagram of Fig. 1.
Fig. 5 is that the equipment platform end module of Fig. 1 and the number of vehicle-mounted end communications baseband processing module pass modulation circuit schematic diagram.
Fig. 6 is that the equipment platform end module of Fig. 1 and vehicle-mounted end communications baseband processing module number pass and receive circuit diagram.
Specific embodiment
Referring to Fig.1.In preferred embodiment described below, a kind of V-band high-speed digital transmission near field communication system, comprising: equipment
Platform information processing and control system, equipment platform end module are mounted on the vehicle-mounted end of equipment platform turning joint bottom end side
Module, on-vehicle information integrated treatment platform, wherein the data of equipment platform end module and vehicle-mounted end module pass through respective respectively
Communications baseband handles coding and the modulation that module completes number communication breath, completes up-conversion through respective antenna and channel module, on
Frequency variation signal radiates after passing through duplexer to V-band plate aerial to space；Finally, equipment platform end module utilizes the day of itself
After line and channel module receive the wireless signal from vehicle-mounted end module, the downconverted communications baseband processing module for giving itself
Demodulation decoding is completed, and gives data to equipment platform information processing and control system, while vehicle-mounted end module is also by certainly
The antenna and channel module of body receive the wireless signal from the transmitting of equipment platform end module, the downconverted communication with itself
Base-Band Processing module completes modulation demodulation, decoding, gives data to on-vehicle information integrated treatment platform, completes operating distance
For the two-way 50Mbps full duplex radio data transmission in the dynamic range of 10cm to 30m.
In an alternate embodiment of the invention, to realize high-speed communication between equipment platform end module and vehicle-mounted end module, equipment is flat
End module and vehicle-mounted end module antenna are all made of multilayer microband paste circular polarised array antenna, guarantee equipment platform end module day
Line beam angle is 10 ° × 10 °, 10 ° × 90 ° of vehicle-mounted end module antenna beam angle, and vehicle-mounted end module is mounted on equipment
Platform turning joint bottom end side, it is ensured that equipment platform end module-vehicle-mounted end module antenna beam position alignment, overlay device are flat
For platform from the overall process for being stowed to setting, the distance entirely communicated is the dynamic range of 10cm to 30m.
Multilayer microband paste circular polarised array antenna radiates submatrix, dielectric substrate integrated waveguide SIW by microband paste
(Substrate Integrated Waveguide) feeding network, SIW and metal waveguide converter form.Vehicle-mounted end module day
Line and equipment platform end module antenna select isolation properly and size meet the requirements using transmitting-receiving common mode for cooperation channel design
Duplexer integrated design, it is desirable that duplexer isolation be better than 50dB.Vehicle-mounted end module power-up is stablized, and receives link is waited to exhale
Be signal, after equipment platform end power-up stablize after, connect call signal to vehicle-mounted end module send chain, establish bi-directional chaining with communicate
Interconnection；The data of equipment platform end module and vehicle-mounted end module handle module by respective communications baseband respectively and complete number communication
The coding of breath and modulation complete up-conversion through respective Channel Elements, and up-conversion signal passes through duplexer to V-band plate aerial
Backward space radiation；Finally, equipment platform end module is received using the V-band plate aerial of itself from vehicle-mounted end module
After wireless signal, the downconverted communications baseband processing module for giving itself completes demodulation decoding, and gives data to equipment and put down
Station information processing and control system, while vehicle-mounted end module is received also by the V-band plate aerial of itself and is put down from equipment
The wireless signal of end module transmitting, downconverted and the communications baseband processing module completion modulation demodulation of itself, decoding,
It gives data to on-vehicle information integrated treatment platform, completes two-way in the dynamic range that operating distance is 10cm to 30m
The transmission of 50Mbps full duplex radio data.
Specific steps include:
(1) equipment platform end and vehicle-mounted end antenna are all made of multilayer Section of Microstrip Antenna Array, and circular polarisation design guarantees that equipment is flat
End module antenna beam angle is 10 ° × 10 °, 10 ° × 90 ° of vehicle-mounted end module antenna beam angle.Multilayer microband paste battle array
Array antenna radiates submatrix, dielectric substrate integrated waveguide SIW (Substrate Integrated Waveguide) by microband paste
Feeding network, SIW and metal waveguide converter form.Vehicle-mounted end antenna and equipment platform end antenna are all made of transmitting-receiving common mode and set
Meter selects isolation suitable and duplexer integrated design that size is met the requirements for cooperation channel design, it is desirable that duplexer every
It is better than 50dB from degree.
Vehicle-mounted end module is mounted on equipment platform turning joint bottom end side, it is ensured that equipment platform end-vehicle-mounted end antenna
Beam position alignment, for overlay device platform from the overall process for being stowed to setting, the distance entirely communicated is the dynamic of 10cm to 30m
Range.
Structure installation guarantees that equipment end and vehicle-mounted end antenna are directed toward after alignment, and vehicle-mounted end module is powered on and is stablized, is waited
Receives link call signal connects call signal to vehicle-mounted end module send chain, to establish after power-up is stablized after equipment platform end
Bi-directional chaining with communicate interconnection.
Refering to Fig. 2.In equipment platform end module and vehicle-mounted end module, vehicle integrated information processing platform sends operating condition and looks into
Inquiry, parameter setting, pattern switching etc. control information command to vehicle-carrying communication Base-Band Processing module, vehicle-carrying communication Base-Band Processing module
It receives and is packaged according to link protocol, and information command will be controlled by Radio Link and be sent to the processing of equipment communications baseband
Module carries out link protocol unpacking, and equipment communications baseband handles module and receives and according to link protocol, parses and executes control and refers to
Enable and this control processing, after by control response according to link protocol be packaged, vehicle-carrying communication base band is sent to by Radio Link
It handles module and carries out link protocol unpacking, control response is sent to vehicle integrated information processing platform.
Refering to Fig. 3, Fig. 4.Equipment platform end module and vehicle-mounted end module include that be separately connected beam angle be 10 ° × 10 °
With the duplexer of 10 ° × 90 ° V-band plate aerials, field in sequential series is put respectively, low-converter and power are put at duplexer both ends
Big device and upconverter, and it is connected in parallel on the frequency synthesizer that crystal oscillator is connected between low-converter and upconverter.Low-converter
It is handled with upconverter by baseband communication and connect power supply with monitoring module, transmit data to system bus, transmission data pass through
System bus and the just two-way communication of platform data processing center.Equipment platform end module and vehicle-mounted end module are in receives link
When, the signal that equipment platform end module and vehicle-mounted end module receiving antenna receive is put through being sent into field after duplexer, and frequency is comprehensive
Clutch provides fixed local oscillator source signal, and crystal oscillator provides 100MHz reference signal for frequency synthesizer, then through in secondary down-convert to
Frequency signal, then middle frequency communication number is output to respective baseband communication processing and monitoring module, it is transferred to by system bus flat
Platform data processing centre；And when emitting link, platform data processing center transfers data to baseband communication by system bus
Processing and monitoring module, through secondary up-conversion and then through, to respective duplexer, passing through V-band plate after power amplification
Antenna is radiated to space.Wherein, equipment platform end module receives uplink signal frequency point 60.9GHz, and vehicle-mounted end module receives downlink
Signal frequency point is 60.1GHz.
Refering to Fig. 5.In an alternate embodiment of the invention, the module communications baseband of equipment platform end module and vehicle-mounted end handles module
It all contains number and passes modulation circuit, wherein it includes having cyclic redundancy check module (Cyclic by sequential series that number, which passes modulation circuit,
Redundancy Check, CRC), data register, RS encoder (Reed-solomon codes), quadrature phase shift keying
(Quadrature Phase Shift Keying, QPSK) mapping block, multiphase modulator and high-speed A/D converter
(Digital/Analog, D/A) is constituted.The number of equipment platform end module and vehicle-mounted end module is passed after data unpack and is first recycled
Redundancy check CRC is calculated, and the data clock of data clock generator is extracted from data register, through RS encoder to data clock and
Check information carries out RS coding, then maps through quadrature phase shift keying QPSK, by frequency communication number in multiphase modulation generation, through height
Output intermediate frequency simulates number communication number after fast digital-to-analogue D/A conversion.
Refering to Fig. 6, the communications baseband processing module of equipment platform end module and vehicle-mounted end all contains number and passes reception demodulation
Circuit, wherein number pass receiving demodulation circuits include pre-filtering+amplification analog processor and be in sequential series in analog-to-digital conversion
Device (Analog to Digital Converter, ADC), automatic gain controller (Automatic Gain Control,
AGC), demodulator is constituted.Number in equipment platform end module and vehicle-mounted end communications baseband processing module passes reception circuit and receives
After middle frequency communication number, by analog processor first to transmitted in SMA (Small A Type) connector come intermediate-freuqncy signal into
Row pre-filtering amplification and power adjustment, then automatic gain controller AGC is sent after the quantization of ADC analog-to-digital conversion, at demodulator
Reason completes processing, the demodulators such as carrier synchronization, bit synchronization, data demodulation and RS decoding and exports Serial Flow, joined according to task
Number is provided with the operations such as corresponding decoding, frame synchronization, code conversion, data packing, and the data packing as unit of frame is sent
To user, the two-way 50Mbps wireless data transmission being finally completed in the dynamic range that operating distance is 10cm to 30m, and error code
Rate can reach 10-8Magnitude.
It is the description to the present invention and its embodiment provided to the engineers and technicians in familiar field of the present invention above,
These descriptions should be considered to be illustrative and not restrictive.Engineers and technicians can be accordingly in invention claims
Thought is done specific operation and is implemented, without prejudice to the spirit and scope of the invention as defined in the appended claims, can be right
It makes a variety of changes in the form and details.Above-mentioned these are regarded as coverage of the invention.
Claims (10)
1. a kind of V-band high-speed digital transmission near field communication system, comprising: equipment platform information processing and control system, equipment platform
End module is mounted on the vehicle-mounted end module of equipment platform turning joint bottom end side, on-vehicle information integrated treatment platform, feature
Be: the data of equipment platform end module and vehicle-mounted end module handle module by respective communications baseband respectively and complete number communication
The coding of breath and modulation complete up-conversion through respective antenna and channel module, and up-conversion signal is flat to V-band by duplexer
It is radiated after plate antenna to space；Equipment platform end module is received using the antenna and channel module of itself from vehicle-mounted end module
Wireless signal after, the downconverted communications baseband processing module for giving itself completes demodulation decoding, and gives data to equipment
Platform information processing and control system, while vehicle-mounted end module is received also by the antenna and channel module of itself from equipment
The wireless signal of platform end module transmitting, the downconverted communications baseband processing module with itself are completed modulation demodulation, are translated
Code gives data to on-vehicle information integrated treatment platform, completes two-way in the dynamic range that operating distance is 10cm to 30m
The transmission of 50Mbps full duplex radio data.
2. V-band high-speed digital transmission near field communication system as described in claim 1, it is characterised in that: to realize equipment platform end
High-speed communication between module and vehicle-mounted end module, equipment platform end module and vehicle-mounted end module antenna are all made of multilayer microband paste
Circular polarised array antenna guarantees that equipment platform end module antenna beamwidth is 10 ° × 10 °, and vehicle-mounted end module antenna wave beam is wide
10 ° × 90 ° of degree, and vehicle-mounted end module is mounted on equipment platform turning joint bottom end side, it is ensured that equipment platform end module-vehicle
It carries end module antenna beam and is directed toward alignment, from the overall process for being stowed to setting, the distance entirely communicated is overlay device platform
The dynamic range of 10cm to 30m.
3. V-band high-speed digital transmission near field communication system as claimed in claim 2, it is characterised in that: multilayer microband paste entelechy
Change array antenna by microband paste radiation submatrix, dielectric substrate integrated waveguide SIW feeding network, SIW and metal waveguide converter
Composition.
4. V-band high-speed digital transmission near field communication system as described in claim 1, it is characterised in that: vehicle-mounted end module antenna and
Equipment platform end module antenna uses transmitting-receiving common mode, to cooperate pair that channel design selects isolation suitable and size is met the requirements
Work device integrated design, it is desirable that duplexer isolation is better than 50dB.
5. V-band high-speed digital transmission near field communication system as claimed in claim 3, it is characterised in that: be powered on to equipment platform end
After stabilization, equipment platform end module connects call signal to vehicle-mounted end module send chain, establish bi-directional chaining with communicate interconnection；Equipment
The data of platform end module and vehicle-mounted end module handle the coding that module completes number communication breath by respective communications baseband respectively
And modulation, up-conversion is completed through respective Channel Elements, and up-conversion signal passes through after duplexer to V-band plate aerial to space
Radiation.
6. V-band high-speed digital transmission near field communication system as claimed in claim 4, it is characterised in that: equipment platform end module benefit
After receiving the wireless signal from vehicle-mounted end module with the V-band plate aerial of itself, the downconverted communication base for giving itself
Tape handling module completes demodulation decoding, and gives data to equipment platform information processing and control system, while vehicle-mounted end mould
Block also by the V-band plate aerial of itself receive from equipment platform end module transmitting wireless signal, it is downconverted and
The communications baseband processing module of itself completes modulation demodulation, decoding, gives data to on-vehicle information integrated treatment platform, complete
Two-way 50Mbps full duplex radio data transmission in the dynamic range for being 10cm to 30m at operating distance.
7. V-band high-speed digital transmission near field communication system as described in claim 1, it is characterised in that: in equipment platform end module
In vehicle-mounted end module, vehicle integrated information processing platform transmission operating condition inquiry, parameter setting, the control information of pattern switching refer to
It enables to vehicle-carrying communication Base-Band Processing module, vehicle-carrying communication Base-Band Processing module is received and is packaged according to link protocol, and is led to
It crosses Radio Link and control information command is sent to the processing module progress link protocol unpacking of equipment communications baseband, equipment communicates base
Tape handling module receive and according to link protocol, parse and execute control instruction and this control processing, after by control response according to
It is packaged according to link protocol, vehicle-carrying communication Base-Band Processing module is sent to by Radio Link and carries out link protocol unpacking, will be controlled
Response is sent to vehicle integrated information processing platform.
8. V-band high-speed digital transmission near field communication system as described in claim 1, it is characterised in that: equipment platform end module and
Vehicle-mounted end module includes being separately connected the duplexer that beam angle is 10 ° × 10 ° and 10 ° × 90 ° V-band plate aerials, duplex
Device both ends respectively field in sequential series put, low-converter and power amplifier and upconverter, and be connected in parallel on low-converter with
The frequency synthesizer of crystal oscillator is connected between upconverter；Low-converter and upconverter are handled by baseband communication and monitor module
Power supply is connected, transmits data to system bus, transmission data carry out two-way by system bus and platform data processing center
Letter.
9. V-band high-speed digital transmission near field communication system as claimed in claim 8, it is characterised in that: equipment platform end module and
When vehicle-mounted end module is in receives link, the signal that equipment platform end module and vehicle-mounted end module receiving antenna receive is through duplex
It is sent into field after device to put, frequency synthesizer provides fixed local oscillator source signal, and crystal oscillator provides 100MHz with reference to letter for frequency synthesizer
Number, then intermediate-freuqncy signal is down-converted to through secondary, then middle frequency communication number is output to respective baseband communication processing and monitoring module,
Platform data processing center is transferred to by system bus；And when emitting link, platform data processing center passes through system bus
Baseband communication processing and monitoring module are transferred data to, through secondary up-conversion and then through extremely respective after power amplification
Duplexer is radiated by V-band plate aerial to space.
10. V-band high-speed digital transmission near field communication system as described in claim 1, it is characterised in that: equipment platform end module and
The module communications baseband processing module of vehicle-mounted end all contains number and passes modulation circuit, wherein it includes by sequentially that number, which passes modulation circuit,
It is in series with cyclic redundancy check module CRC, data register, RS encoder, quadrature phase shift keying QPSK mapping block, multiphase tune
Device and high-speed A/D converter D/A processed is constituted；The number of equipment platform end module and vehicle-mounted end module is passed after data unpack and is first carried out
Cyclic redundancy check (CRC) calculates, and the data clock of data clock generator is extracted from data register, through RS encoder to data
Clock and check information carry out RS coding, then map through quadrature phase shift keying QPSK, and frequency communication number in generating is modulated by multiphase,
Output intermediate frequency simulates number communication number after high-speed digital-analog D/A conversion.
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| CN113922927A (en) * | 2021-07-29 | 2022-01-11 | 之讯科技(深圳)有限公司 | Wireless communication system and method based on coded aperture |
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