CN110223575A - A kind of synthesis measuring system and method for actual situation one wireless communication system - Google Patents
A kind of synthesis measuring system and method for actual situation one wireless communication system Download PDFInfo
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- CN110223575A CN110223575A CN201910418683.5A CN201910418683A CN110223575A CN 110223575 A CN110223575 A CN 110223575A CN 201910418683 A CN201910418683 A CN 201910418683A CN 110223575 A CN110223575 A CN 110223575A
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Abstract
The invention belongs to communication theories and technology experiment instructional technology field, a kind of synthesis measuring system and method for actual situation one wireless communication system is disclosed, the synthesis measuring system of the actual situation one wireless communication system is provided with baseband portion, radio frequency part, first antenna, the second antenna, control computer；Baseband portion and radio frequency part are by cable connection, and radio frequency part and first antenna, the second antenna are by cable connection, and baseband portion is connected by control line with data line with control computer, and radio frequency part is connected by control line with data line with control computer.Baseband portion and radio frequency part of the present invention use modularized design, are built by building block system, can both construct a complete wireless communication system, can also construct a communication subsystem.Multiple platforms are connected with the network equipment, construct Network Laboratory, can at any time, everywhere, arbitrarily carry out communication technology experiment.Baseband portion can carry out secondary development, and real-time loading carries out innovative experimental project.
Description
Technical field
The invention belongs to communication theory and technology experiment instructional technology field more particularly to a kind of actual situations integrally to wirelessly communicate
The synthesis measuring system and method for system
Background technique
Currently, experimental teaching is an important link in communication technology teaching, student deepens pair in this link
The structure of actual communication system, composition, relationship and connection between each module are familiar in theoretical understanding and grasp.Student from
Test lead observes the signal of each link, further intuitively understands communication system, principle and each link, while recognizing reality
System be based on principle, but it is different.
Communication technology experiment both at home and abroad mostly uses two ways at present, first is that another kind is software using communication experiment case
The method of radio, but all there is the drawbacks of itself can not overcoming.For communication experiment case based on replication experiment, experimentation is past
Toward be start it is more, beat one's brains lack, student only knows the function of some module and does not know how this function is realized, while testing item
Mesh is fixed, and student is merely able to the experiment provided on observation experiment case.Module parameter seldom can be set, and cause many experimental phenomenas
Do not observe.Base band is generally realized by the way of software in the mode of software radio, and experiment relies on analogue simulation communication system
It unites model, the case where real world is roughly imitated using simplified channel model, however this model is difficult accurately to describe
All current conditions, it is also difficult to learn the feasibility using certain model.Model table is only rested on to the understanding of communication theory
Face lacks understanding and design to model physical circuit, and complicated communication system is difficult accurate modeling.By room and time
Limitation, the experiment class hour that can be provided is inadequate.Student's scale is greater than the resource that laboratory can be provided, the number of experiments of development
It is few, the content of communication theory and technology cannot be covered.Experiment method is single, and the experiment content provided is fixed, and student lacks interest,
Lack innovative training, general style experiment can not be provided, does not meet the target of current experiment teaching.A kind of experimental courses use
One or more of experimental facilities cause the experimental facilities amount of purchasing big, difficult in maintenance, and occupied space resource is more.
In conclusion problem of the existing technology is:
1) at present the communication technology experiment using communication experiment case start it is more, beat one's brains lack, student only knows the function of some module
And not knowing how this function is realized, while experimental project is fixed, student is merely able to the experiment provided on observation experiment case；
Module parameter seldom can be set, and many experimental phenomenas is caused not observe.
2) communication technology experiment at present is difficult accurately to describe all real items using the method model of software radio
Part, it is also difficult to learn the feasibility using certain model.
Summary of the invention
In view of the problems of the existing technology, the present invention provides a kind of synthesis measurings of actual situation one wireless communication system
System and method.
The invention is realized in this way a kind of synthesis measuring system of actual situation one wireless communication system, the actual situation one
The synthesis measuring system of body wireless communication system is provided with baseband portion, radio frequency part, first antenna, the second antenna, control electricity
Brain；
Baseband portion and radio frequency part are connected by cable connection, radio frequency part and first antenna, the second antenna by cable
It connects, baseband portion is connected by control line with data line with control computer, and radio frequency part and control computer pass through control line sum number
It is connected according to line.
Further, the baseband portion includes transmitter base band and receiver base band；
Transmitter base band includes signal source module, message sink coding and Multiplexing module, channel coding module, band modulation mould
Block；
Receiver base band includes frequency band demodulation module, and channel decoding module demultiplexes and source decoding module and terminal module；
Signal source module, to message sink coding and Multiplexing module, can also pass through cable connection to terminal mould by cable connection
Block；Message sink coding and Multiplexing module pass through cable connection to channel coding module, can also pass through cable connection to channel decoding mould
Block；Band modulation module, to radio frequency part, can also pass through cable connection to frequency band demodulation module by cable connection.
Further, the signal source module is connected to camera by video interface, is connected to Mike by audio interface
Wind is connected to signal source instrument by data line；
Message sink coding and Multiplexing module include FPGA and single-chip microcontroller, and FPGA and single-chip microcontroller are connected by data line and control line
It connects.
Further, the terminal module is connected to display screen by video interface, is connected to loudspeaker by audio interface,
Test equipment is connected to by data line.
Further, the radio frequency part is divided into transmitter radio-frequency front-end and receiver radio frequency front end；
Transmitter radio-frequency front-end includes the first mixer module, the first local oscillator module, for the first VGA module and PA mould
Block；
First local oscillator module is arrived by cable connection to the first mixer module, the first mixer module by cable connection
First VGA module, the first VGA module pass through cable connection to transmitting antenna by cable connection to PA module, PA module；
Receiver radio frequency front end includes LNA module, the 2nd VGA module, the second mixer module and the second local oscillator module；
Receiver antenna arrives LNA module by cable connection, and LNA module passes through cable connection to the 2nd VGA module, and second
VGA module passes through cable connection to the second mixer module by cable connection to the second mixer module, the second local oscillator module.
Another object of the present invention is to provide a kind of synthesis measuring systems comprising the actual situation one wireless communication system
The LAN control system of system, the synthesis measuring system comprising at least one actual situation one wireless communication system, outer computer
Pass through server access local area network.
In conclusion advantages of the present invention and good effect are as follows: including baseband portion, radio frequency part, antenna and control electricity
Brain.Baseband portion and radio frequency part use modularized design, are built by building block system, can both construct a complete wireless communication
System can also construct a communication subsystem.Multiple platforms are connected with the network equipment, construct Network Laboratory, can at any time,
Everywhere, arbitrarily carry out communication technology experiment.Baseband portion can carry out secondary development, and real-time loading carries out innovative experimental project.
Detailed description of the invention
Fig. 1 is the synthesis measuring system structure diagram of actual situation one wireless communication system provided in an embodiment of the present invention；
Fig. 2 is baseband portion block diagram provided in an embodiment of the present invention；
Fig. 3 is signal source module block diagram provided in an embodiment of the present invention；
Fig. 4 is message sink coding provided in an embodiment of the present invention and Multiplexing module block diagram；
Fig. 5 is terminal module block diagram provided in an embodiment of the present invention；
Fig. 6 is radio frequency part block diagram provided in an embodiment of the present invention；
Fig. 7 is the actual situation one wireless communication system comprehensive experimental system network architecture provided in an embodiment of the present invention；
In figure: 1, baseband portion；2, radio frequency part；3, first antenna；4, the second antenna；5, computer is controlled；6, transmitter
Base band；7, receiver base band；8, signal source module；9, message sink coding and Multiplexing module；10, channel coding module；11, frequency band tune
Molding block；12, frequency band demodulation module；13, channel decoding module；14, it demultiplexes and source decoding module；15, terminal module；16,
Camera；17, microphone；18, signal source instrument；19,FPGA；20, single-chip microcontroller；21, display screen；22, loudspeaker；23, it tests
Instrument；24, transmitter radio-frequency front-end；25, receiver radio frequency front end；26, the first mixer module；27, the first local oscillator module；
28, the first VGA module；29, PA module；30, LNA module；31, the 2nd VGA module；32, the second mixer module；33, second
Local oscillator module；34, virtual laboratory；35, server；36, computer in room for individual study；37, dormitory computer；38, library counts
Calculation machine；39, the first actual situation one wireless communication system synthesis measuring system；40, the second actual situation one wireless communication system is comprehensive
Measurement system；41, third actual situation one wireless communication system synthesis measuring system；42, interchanger.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to embodiments, to the present invention
It is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not used to
Limit the present invention.
The present invention can carry out more Experiment Course Teachings of wireless communication technique.To baseband portion, student can independently be set
Calculating method simultaneously carries out load verifying.To radio frequency part, student can replace existing module with autonomous Design functional module.Carry out real
When testing teaching, student is not limited by when and where, can be chosen at random experiment content at any time, everywhere, be completed experiment religion
It learns.
Application principle of the invention is explained in detail with reference to the accompanying drawing.
As shown in Figure 1, actual situation one wireless communication system synthesis measuring system provided in an embodiment of the present invention includes base band
Part 1, radio frequency part 2, first antenna 3, the second antenna 4, control computer 5.Baseband portion 1 and radio frequency part 2 are connected by cable
It connects, by cable connection, baseband portion 1 passes through control line with control computer 5 for radio frequency part 2 and first antenna 3, the second antenna 4
It is connected with data line, radio frequency part 2 is connected by control line with data line with control computer 5.
As shown in Fig. 2, baseband portion 1 includes transmitter base band 6 and receiver base band 7, transmitter base band 6 includes signal source
Module 8, message sink coding and Multiplexing module 9, channel coding module 10, band modulation module 11, receiver base band 7 include frequency band solution
Mode transfer block 12, channel decoding module 13 demultiplex and source decoding module 14 and terminal module 15.Signal source module 8 passes through cable
It is connected to message sink coding and Multiplexing module 9, cable connection to terminal module 15 can also be passed through.Message sink coding and Multiplexing module 9 are logical
Cable connection is crossed to channel coding module 10, cable connection to channel decoding module 13 can also be passed through.Band modulation module 11 is logical
Cable connection is crossed to radio frequency part 2, cable connection to frequency band demodulation module 12 can also be passed through.
As shown in figure 3, signal source module 8 is connected to camera 16 by video interface, wheat is connected to by audio interface
Gram wind 17, is connected to signal source instrument 18 by data line.
As shown in figure 4, message sink coding and Multiplexing module 9 include FPGA19 and single-chip microcontroller 20, FPGA19 and single-chip microcontroller 20 are logical
Data line is crossed to connect with control line.Channel coding module 10, band modulation module 11, frequency band demodulation module 12, channel decoding mould
Block 13 demultiplexes similar with 9 structure of Multiplexing module with source decoding module 14 and message sink coding.
As shown in figure 5, terminal module 15 is connected to display screen 21 by video interface, it is connected to and is amplified by audio interface
Device 22 is connected to test equipment 23 by data line.
As shown in fig. 6, radio frequency part 2 is divided for transmitter radio-frequency front-end 24 and receiver radio frequency front end 25.Transmitter radio frequency
Front end 24 includes the first mixer module 26, local oscillator module 27 is reacted, for VGA module 28 and PA module 29.First local oscillator mould
Block 27 passes through cable connection to the first VGA module by cable connection to the first mixer module 26, the first mixer module 26
28, the first VGA module 28 passes through cable connection to transmitting antenna 3 by cable connection to PA module 29, PA module 29.Receiver
Radio-frequency front-end 25 includes LNA module 30, the 2nd VGA module 31, the second mixer module 32 and the second local oscillator module 33.Receiver
Antenna 4 passes through cable connection to the 2nd VGA module 31, the 2nd VGA module by cable connection to LNA module 30, LNA module 30
31 pass through cable connection to the second mixer module by cable connection to the second mixer module 32, the second local oscillator module 33
32。
As shown in fig. 6, the first mixer module 26, the first local oscillator module 27, the first VGA module 28, PA module 29, LNA
Module 30, the 2nd VGA module 31, the second mixer module 32 and the second local oscillator module 33 work independently, and can replace offline.
As shown in fig. 7, mostly set actual situation one wireless communication system synthesis measuring system 39,40,41 is connected to by cable
Interchanger 42 constitutes virtual laboratory 34.
As shown in fig. 7, virtual laboratory 34 is connect by network with server 35, and the computer 36 in room for individual study, dormitory
In computer 37 and library in computer by network connection arrive server 35, constitute actual situation one wireless communication system
Comprehensive experimental system.
Baseband portion 1 and radio frequency part 2 of the invention uses modularized design, is built by building block system, can both construct one
A complete wireless communication system can also construct a communication subsystem.Multiple platforms are connected with the network equipment, construct networking
Laboratory can at any time, everywhere, arbitrarily carry out communication technology experiment.Baseband portion can carry out secondary development, and real-time loading is opened
Open up innovative experimental project.
Baseband portion 1 is divided for transmitter base band 6 and receiver base band 7.
6 part of transmitter base band includes signal source module 8, message sink coding and Multiplexing module 9, channel coding module 10, frequency
Band modulation module 11.Signal source module 8 and message sink coding and Multiplexing module 9 pass through cable connection, message sink coding and Multiplexing module 9
With channel coding module 10 by cable connection, channel coding module 10 and band modulation module 11 pass through cable connection.
There is video interface on signal source module 8, is connect with video camera 16, can receive vision signal.There is audio in module
Interface connect with microphone 17, can receive audio signal.There is data-interface in module, can receive the production of signal source instrument 18
Raw signal.
Message sink coding is made of with Multiplexing module 9 FPGA19 and single-chip microcontroller 20, and FPGA19 and single-chip microcontroller 20 connect, in monolithic
Message sink coding and multiplexing function, on-line loaded and remote loading program function are realized under the control of machine 20.
Channel coding module 10 is made of FPGA19 and single-chip microcontroller 20, and FPGA19 and single-chip microcontroller 20 connect, in single-chip microcontroller 20
Control under realize channel coding function, on-line loaded and remote loading program function.
Band modulation module 11 is made of FPGA19 and single-chip microcontroller 20, and FPGA19 and single-chip microcontroller 20 connect, in single-chip microcontroller 20
Control under realize band modulation function, on-line loaded and remote loading program function.
7 part of receiver base band includes frequency band demodulation module 11, and channel decoding module 13 demultiplexes and source decoding module 14
With terminal module 15.Frequency band demodulation module 11 and channel decoding module 13 pass through cable connection, channel decoding module 13 and information source
For decoding module 14 by cable connection, source decoding module 14 and terminal module 15 pass through cable connection.
Frequency band demodulation module 11 is made of FPGA19 and single-chip microcontroller 20, and FPGA19 and single-chip microcontroller 20 connect, in single-chip microcontroller 20
Control under realize frequency band demodulation function, on-line loaded and remote loading program function.
Channel decoding module 13 is made of FPGA19 and single-chip microcontroller 20, and FPGA19 and single-chip microcontroller 20 connect, in single-chip microcontroller 20
Control under realize channel decoding function, on-line loaded and remote loading program function.
It demultiplexes and is made of with source decoding module 14 FPGA19 and single-chip microcontroller 20, FPGA19 and single-chip microcontroller 20 connect, in list
It realizes and demultiplexes and source decoding function, on-line loaded and remote loading program function under the control of piece machine 20.
There is video interface on terminal module 15, connect with display screen 21, can show vision signal.There is audio to connect in module
Mouthful, it is connect with loudspeaker 22, it can be with playing audio signal.There is data-interface in module, it can be with output digit signals.
The signal source module 8 of baseband portion 1 can be connected with terminal module 15, output signal.
The message sink coding of baseband portion 1 can be connect with demultiplexing with source decoding module 14 with Multiplexing module 9, carry out information source
Coding and decoding experiment is multiplexed and demultiplexes experiment.
The channel coding module 10 of baseband portion 1 can be connected with channel decoding module 13, carry out channel coding and decoding
Experiment.
The band modulation module 11 of baseband portion 1 can be connected with frequency band demodulation module 12, carry out band modulation and demodulation
Experiment.
Actual situation one wireless communication system synthesis experiment platform radio frequency part is divided into transmitter radio-frequency front-end 24 and receiver
Radio-frequency front-end 25.
Transmitter radio-frequency front-end 24 includes the first mixer module 26, the first local oscillator module 27, the first VGA module 28 and PA
Module 29.First mixer module 26, the first local oscillator module 27, the first VGA module 28 and PA module 29 work independently, Ke Yili
Line replacement.By control computer setting, the gain of the first VGA module 28 passes through control for the frequency of first local oscillator module 27 and gain
Computer 5 is arranged.
Receiver radio frequency front end 25 includes LNA module 30, the 2nd VGA module 31, the second mixer module 32 and second
Vibration module 33.LNA module 30, the 2nd VGA module 31, the second mixer module 32 and the second local oscillator module 33 work independently, can
To replace offline.The frequency of second local oscillator module 33 and gain are arranged by control computer 5, and the gain of the 2nd VGA module 31 is logical
Cross the setting of control computer 5.
Actual situation one wireless communication system synthesis experiment platform antenna part is divided into transmitter antenna and receiver antenna, day
Line is microstrip antenna.
Actual situation one wireless communication system synthesis experiment platform multiple devices constitute a local area network, and outer computer is logical
It crosses server 35 and accesses local area network, select a set of actual situation one wireless communication system synthesis experiment platform, carry out experiment.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (6)
1. a kind of synthesis measuring system of actual situation one wireless communication system, which is characterized in that the actual situation integrally wirelessly communicates
The synthesis measuring system of system is provided with baseband portion, radio frequency part, first antenna, the second antenna, control computer；
Baseband portion and radio frequency part pass through cable connection, and radio frequency part and first antenna, the second antenna pass through cable connection, base
Band part is connected by control line with data line with control computer, and radio frequency part and control computer are connected by control line and data line
It connects.
2. the synthesis measuring system of actual situation one wireless communication system as described in claim 1, which is characterized in that the base band
Part includes transmitter base band and receiver base band；
Transmitter base band includes signal source module, message sink coding and Multiplexing module, channel coding module, band modulation module；
Receiver base band includes frequency band demodulation module, and channel decoding module demultiplexes and source decoding module and terminal module；
Signal source module, to message sink coding and Multiplexing module, can also pass through cable connection to terminal module by cable connection；Letter
Source code and Multiplexing module pass through cable connection to channel coding module, can also pass through cable connection to channel decoding module；Frequently
Band modulation module, to radio frequency part, can also pass through cable connection to frequency band demodulation module by cable connection.
3. the synthesis measuring system of actual situation one wireless communication system as claimed in claim 2, which is characterized in that the signal
Source module is connected to camera by video interface, is connected to microphone by audio interface, is connected to signal by data line
Source instrument；
Message sink coding and Multiplexing module include FPGA and single-chip microcontroller, and FPGA is connected by data line with control line with single-chip microcontroller.
4. the synthesis measuring system of actual situation one wireless communication system as claimed in claim 2, which is characterized in that the terminal
Module is connected to display screen by video interface, is connected to loudspeaker by audio interface, is connected to tester by data line
Device.
5. the synthesis measuring system of actual situation one wireless communication system as described in claim 1, which is characterized in that the radio frequency
Part is divided into transmitter radio-frequency front-end and receiver radio frequency front end；
Transmitter radio-frequency front-end includes the first mixer module, the first local oscillator module, for the first VGA module and PA module；
First local oscillator module passes through cable connection to first by cable connection to the first mixer module, the first mixer module
VGA module, the first VGA module pass through cable connection to transmitting antenna by cable connection to PA module, PA module；
Receiver radio frequency front end includes LNA module, the 2nd VGA module, the second mixer module and the second local oscillator module；
Receiver antenna passes through cable connection to the 2nd VGA module, the 2nd VGA by cable connection to LNA module, LNA module
Module passes through cable connection to the second mixer module by cable connection to the second mixer module, the second local oscillator module.
6. a kind of office comprising the synthesis measuring system of actual situation one wireless communication system described in Claims 1 to 5 any one
Domain network control system, which is characterized in that the synthesis measuring system comprising at least one actual situation one wireless communication system, outside meter
Calculation machine passes through server access local area network.
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