CN110164228A - A kind of communication engineering Specialty Experiment platform - Google Patents
A kind of communication engineering Specialty Experiment platform Download PDFInfo
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- CN110164228A CN110164228A CN201910449004.0A CN201910449004A CN110164228A CN 110164228 A CN110164228 A CN 110164228A CN 201910449004 A CN201910449004 A CN 201910449004A CN 110164228 A CN110164228 A CN 110164228A
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Abstract
The present invention provides a kind of communication engineering Specialty Experiment platforms, including the communication engineering course master control interface based on MATLAB language, including five sub-platforms, sub-platform is specially Signal & Linear System analysis platform, digital signal processing platform, Principle of Communication platform, Digital Image Processing platform and Speech Processing Platform, Signal & Linear System analysis platform is used for the study of signal and system course, digital signal processing platform is used for the study of Course of Digital Signal Processing, Principle of Communication platform is used for the study of Course of Communication Principles, Digital Image Processing platform and Speech Processing Platform are respectively used to Digital Image Processing and the study of Speech processing, so that " Principle of Communication " of communication engineering profession, " signal and system ", " Digital Signal Processing ", " Digital Image Processing " and " at voice signal Reason " student's curriculum experiment demands of five main courses met, reduce the investment of instruction cost, convenient for promoting.
Description
Technical field
The invention belongs to communication experiment platform technology fields, and in particular to a kind of communication engineering Specialty Experiment platform.
Background technique
Communication engineering profession is an important profession of electronic information class, is occupied irreplaceablely in electronic information field
Position, communication engineering mainly include " Principle of Communication ", " signal and system ", " Electronic Circuit of Communication ", " Digital Signal Processing ", " move
Dynamic communication ", " image procossing ", the courses such as " MATLAB emulation and application " and " Speech processing ", these course theoretical properties are strong,
Formula is more, student learn understand get up it is relatively difficult, in addition these courses are equipped with a certain number of experimental courses, laboratory
The traditional teaching way of journey is given lessons and is operated using experimental box.
But with the fast development of modern information technologies, experimental box renewal speed is very fast, this is for college teaching
One very big cost, and tested using experimental box, the debugging used time is longer, it has not been convenient to the expansion of teaching.
Summary of the invention
Technical problem to be solved by the present invention lies in view of the above shortcomings of the prior art, providing, a kind of communication engineering is special
Industry experiment porch, to solve the fast development mentioned above in the background art with modern information technologies, experimental box updates speed
Degree is very fast, this is a very big cost for college teaching, and is tested using experimental box, the debugging used time compared with
It is long, it has not been convenient to the problem of the expansion of teaching.
In order to solve the above technical problems, the technical solution adopted by the present invention is that: a kind of communication engineering Specialty Experiment platform, packet
The communication engineering course master control interface based on MATLAB language is included, includes five sons inside the communication engineering course master control interface
Platform, the sub-platform are specially Signal & Linear System analysis platform, digital signal processing platform, Principle of Communication platform, number
Word image processing platform and Speech Processing Platform, wherein the Signal & Linear System analysis platform for signal with
The operation and study of system course, the digital signal processing platform are used for the operation simulation learning of Course of Digital Signal Processing,
The Principle of Communication platform is used to complete the comparison study of Course of Communication Principles, the Digital Image Processing platform and voice signal
Processing platform is respectively utilized to complete Digital Image Processing and the experimental learning of Speech Signal Processing Course.
Preferably, the Signal & Linear System analysis platform includes sequence basic operation module, baseband signal production
Raw module, LTI system time-domain analysis module, signal frequency domain analysis module, continuous multifrequency domain analyzing module and discrete Z domain analysis mould
Block, the baseband signal generation module are used for the generation of signal, the sequence basic operation module be used for the signal of generation into
The operation of sequence, the LTI system time-domain analysis module, signal frequency domain analysis module, continuous multifrequency domain analyzing module and discrete Z
Domain analyzing module is respectively used to carry out comprehensive analysis to signal.
Preferably, the digital signal processing platform include M sequence computing module, discrete Fourier transform module,
Convolution algorithm module, digital filter and Butterworth filter, the M sequence computing module is for the operation to M sequence
Cheng Jinhang experimental learning, the discrete Fourier transform module are used to obtain its frequency using Fourier transformation to time-continuous signal
Spectral function, the convolution algorithm module is for handling filter in spatial domain, the digital filter and Butterworth filtering
Device is observed and is learnt to different wave for student.
Preferably, the Principle of Communication platform includes analog-modulated module, Digital Baseband Transmission module, digital band
Transmission module and analog signal digital module, the analog-modulated module include amplitude modulator zone and angle modulated area, described
Amplitude modulator zone includes carrier signal, modulated signal, DSB-SC signal, AM signal, VSB signal and SSB upper side band signal,
The parameter of the amplitude modulator zone is manually entered, for seeing corresponding figure, the angle tune in Tu Qu after being configured
Zone processed has the button of FM signal, after angle parameter setting, is checked and angle by button in corresponding graphics field
The corresponding frequency modulation curve of parameter；
The Digital Baseband Transmission module includes baseband signal eye figure, raised cosine roll off system and digital baseband signal, is led to
Cross observation of the adjustment variation completion of parameter to the waveform of different digital baseband signal；
The digital band transmission module in bandpass signal channel for transmitting, specially to 2ASK signal, 2FSK signal
It is observed and is learnt with 2PSK signal；
The analog signal digital module includes sampling and non-uniform quantizing two subsystems, defeated in sampling subsystem
After the amplitude, frequency and sampling rate that enter low-pass signal, observe that original signal, sampled signal and sampling restore letter in Drawing zone
Number waveform；In non-uniform quantizing subsystem, quantized interval and compression property are illustrated, so as to observe A rule and U
Restrain compression property curve.
Preferably, the Digital Image Processing platform includes image gray levels correction module, image smoothing filtering technique mould
Block, image sharpening processing module, image statistics module, block encription module, JPEG compression coding module and estimation
Module.
Preferably, the Speech Processing Platform includes short-time analysis module, homomorphic analysis module, linear analysis
Module, pitch evaluation module, voice synthetic module and speech enhan-cement module.
Compared with the prior art, the present invention has the following advantages:
The present invention is by by Signal & Linear System analysis platform, digital signal processing platform, Principle of Communication platform, number
Five sub-platform comprehensive designs of image processing platform and Speech Processing Platform constitute experiment porch, so that communication work
" Principle of Communication " of journey profession, " signal and system ", " Digital Signal Processing ", " Digital Image Processing " and " Speech processing "
Student's curriculum experiment demand of five main courses is met, and the increase that instruction cost is caused using experimental box is avoided, meanwhile,
Communication engineering course master control interface based on MATLAB language can increase the palm to this language during student operates with
Hold degree and understandability, at the same can also exercise student ' manipulative ability, employment and continuing education to student can also establish
Certain basis.
Detailed description of the invention
Fig. 1 is principle of the invention frame diagram.
Description of symbols:
1- Signal & Linear System analysis platform；11- sequence basic operation module；12- baseband signal generation module；13-
LTI system time-domain analysis module；14- signal frequency domain analysis module；The continuous multifrequency domain analyzing module of 15-；The discrete Z domain analysis of 16-
Module；2- digital signal processing platform；21-M Sequence Operation Theory module；22- discrete Fourier transform module；23- convolution algorithm mould
Block；24- digital filter；25- Butterworth filter；3- Principle of Communication platform；31- analog-modulated module；32- digital baseband
Transmission module；33- digital band transmission module；34- analog signal digital module；4- Digital Image Processing platform；41- image
Gray level correction module；42- image smoothing filtering technique module；43- image sharpening processing module；44- image statistics module；
45- block encription module；46-JPEG compressed encoding module；47- motion estimation module；5- Speech Processing Platform；51- is short
When analysis module；52- homomorphic analysis module；53- linear analysis module；54- pitch evaluation module；55- voice synthetic module；
56- speech enhan-cement module.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
As shown in Figure 1, the present invention provides a kind of technical solution: a kind of communication engineering Specialty Experiment platform, including be based on
The communication engineering course master control interface of MATLAB language, the communication engineering course master control interface inside includes five sub-platforms,
The sub-platform is specially Signal & Linear System analysis platform 1, digital signal processing platform 2, Principle of Communication platform 3, number
Image processing platform 4 and Speech Processing Platform 5, wherein the Signal & Linear System analysis platform 1 for signal with
The operation and study of system course, the Signal & Linear System analysis platform 1 include sequence basic operation module 11, basic letter
Number generation module 12, LTI system time-domain analysis module 13, signal frequency domain analysis module 14, continuous 15 and of multifrequency domain analyzing module
Discrete Z domain analyzing module 16, the baseband signal generation module 12 are used for the generation of signal, and predominantly user shows various letters
Number waveform, the sequence basic operation module 11 is used for the operation to the signal of generation into sequence, for corresponding by changing
Displacement, check corresponding image in Drawing zone, the LTI system time-domain analysis module 13 is divided for continuous system area, discrete
Four system area, description of test area and Drawing zone areas, setting in continuous system area can observe in Drawing zone after parameter
To the figure of continuous system shock response and step response, can be observed after discrete system area sets molecule denominator parameter
Corresponding discrete sampling is corresponding and the waveform of discrete filter；Description of test area have corresponding experiment purpose, experiment content and
Experimental principle；
Signal frequency domain analysis module 14 include 5 experiment subsystems, respectively the frequency-domain analysis of continuous cycles signal, continuously
The frequency-domain analysis of nonperiodic signal, the frequency-domain analysis of Discrete Periodic Signals, the frequency-domain analysis of discrete nonperiodic signal and LTI system
Frequency-domain analysis, observed and learned in the waveform that Drawing zone generates frequency spectrum corresponding thereto by the signal z of observation input
It practises.
Continuous multifrequency domain analyzing module 15 is specially the complex frequency domain experiment porch of continuous time system, discrete Z domain analysis mould
Block 16 includes that four parts are specially discrete transform, the parameter setting area of molecule denominator matrix, Drawing zone and description of test area, is led to
Various operations can be carried out by, which crossing after setting parameter, is respectively used to carry out comprehensive analysis to signal.
The digital signal processing platform 2 is used for the operation simulation learning of Course of Digital Signal Processing, the digital signal
Processing platform 2 includes M sequence computing module 21, discrete Fourier transform module 22, convolution algorithm module 23, digital filter 24
With Butterworth filter 25, the M sequence computing module 21 is used to learn by experimentation to the calculating process of M sequence, described
Discrete Fourier transform module 22 is used to obtain its frequency spectrum function, the convolution fortune using Fourier transformation to time-continuous signal
Module 23 is calculated for handling filter in spatial domain, the digital filter 24 and Butterworth filter 25 are used for student couple
Different wave is observed and is learnt.
The Principle of Communication platform 3 is used to complete the comparison study of Course of Communication Principles, and the Principle of Communication platform 3 includes
Analog-modulated module 31, Digital Baseband Transmission module 32, digital band transmission module 33 and analog signal digital module 34, institute
Stating analog-modulated module 31 includes amplitude modulator zone and angle modulated area, and the amplitude modulator zone includes carrier signal, modulation
The parameter of signal, DSB-SC signal, AM signal, VSB signal and SSB upper side band signal, the amplitude modulator zone is manually entered,
For seeing corresponding figure in Tu Qu after being configured, the angle modulated zone has the button of FM signal, to angle
After parameter setting, frequency modulation curve corresponding with angle parameter is checked in corresponding graphics field by button；
The Digital Baseband Transmission module 32 includes baseband signal eye figure, raised cosine roll off system and digital baseband signal,
The observation to the waveform of different digital baseband signal is completed by the adjustment variation of parameter；
The digital band transmission module 33 specially believes 2ASK signal, 2FSK for transmitting in bandpass signal channel
Number and 2PSK signal observed and learnt；
The analog signal digital module 34 include sampling and non-uniform quantizing two subsystems, sampling subsystem,
After inputting the amplitude, frequency and sampling rate of low-pass signal, observe that original signal, sampled signal and sampling restore in Drawing zone
The waveform of signal；In non-uniform quantizing subsystem, quantized interval and compression property are illustrated, so as to observe A rule
Compression property curve is restrained with U.
The Digital Image Processing platform 4 includes image gray levels correction module 41, image smoothing filtering technique module 42, image
Edge contrast module 43, image statistics module 44, block encription module 45, JPEG compression coding module 46 and estimation
Module 47, image gray levels correction module 41 are used to open a sub-picture, the linear stretch for observing image, observe a sub-picture
Inverse ratio effect, observation gamma be greater than one, equal to one and less than one in the case where image, drawing image histogram, observation
The histogram of image after image and observation equilibrium after equilibrium, image smoothing filtering technique module 42 is for observing original image, 3*3 mark
Quasi- average filter, 5*5 standard average filter, plus make an uproar image, 3*3 median filtering, 5*5 median filtering image and it can be filtered
Wave effect is compared；
Image sharpening processing module 43 is first filtered image, carries out image enhancement to it later, passes through the module
The effect after the filtering of three kinds of methods is observed, and it is preferable to compare that effect, can also observe three kinds of image enhancement skills
The effect of art can also directly compare it can be observed that reinforcing effect is preferable with original image；
Image statistics module 44 can calculate its level statistic characteristic and vertical statistics for giving a sub-picture
Performance plot；The image for giving continuous two frames, then can draw out inter-frame statistics performance plot；
Block encription module 45 can observe the image after coding for completing two kinds of block encriptions: 4*4 and 8*8
Difference between original image, and thus obtain analysis result.
JPEG compression coding module 46 is used for an original image through including 8 after overcompression and the process that decompresses
Button, be respectively original image, 8*8DCT frequency spectrum show, reconstruction image, difference value histogram, reconstruction image, quantization error image；
Motion estimation module 47 is the picture according to two width successive frames come the movement tendency after predicted pictures, and provides fortune
Dynamic vector figure and prediction residual.
The Speech Processing Platform 5 includes short-time analysis module 51, homomorphic analysis module 52, linear analysis module
53, pitch evaluation module 54, voice synthetic module 55 and speech enhan-cement module 56；
Short-time analysis module 51 can play the sound after various short-time analysis for carrying out, and homomorphic analysis module 52 is used
It is played in completing voice, the image of speech waveform observation, the log-magnitude spectrum of voice, cepstrum and low-pass filtering log-magnitude spectrum is seen
The work examined, function of the linear analysis module 53 for realizing the sampling of waveform, linear superposition and linear prediction, pitch evaluation mould
The bass filter function of voice may be implemented in block 54, and the function of residual error estimation and pitch evaluation, voice synthetic module 55 can be real
The now waveform of raw tone and broadcasting, add the speech waveform after making an uproar and broadcasting, speech waveform and broadcasting after synthesis, from sound
Broadcasting and waveform can be apparent three kinds of sound of resolution difference, speech enhan-cement module 56 for realizing voice enhancing function
Energy.
To sum up, pass through Signal & Linear System analysis platform 1, digital signal processing platform 2, Principle of Communication platform 3, number
5 five sub-platforms of image processing platform 4 and Speech Processing Platform can help student complete communication engineering in " signal with
System ", " Digital Signal Processing ", " Principle of Communication ", " Digital Image Processing " and " Speech processing " five main courses
Experimental learning, avoids the increase that instruction cost is caused using experimental box, and student can be helped to complete learning tasks, makes convenient for promoting
With.
It should be noted that, in this document, relational terms such as first and second and the like are used merely to a reality
Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation
In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to
Non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those
Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or equipment
Intrinsic element.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (6)
1. a kind of communication engineering Specialty Experiment platform, it is characterised in that: including the communication engineering course master based on MATLAB language
Interface is controlled, includes five sub-platforms inside the communication engineering course master control interface, the sub-platform is specially signal and linear
Network analysis platform (1), digital signal processing platform (2), Principle of Communication platform (3), Digital Image Processing platform (4) and language
Sound signal processing platform (5), wherein the Signal & Linear System analysis platform (1) is used for the operation of signal and system course
With study, the digital signal processing platform (2) is used for the operation simulation learning of Course of Digital Signal Processing, the Principle of Communication
Platform (3) is used to complete the comparison study of Course of Communication Principles, and the Digital Image Processing platform (4) and Speech processing are flat
Platform (5) is respectively utilized to complete Digital Image Processing and the experimental learning of Speech Signal Processing Course.
2. a kind of communication engineering Specialty Experiment platform according to claim 1, which is characterized in that the signal and linear system
System analysis platform (1) includes sequence basic operation module (11), baseband signal generation module (12), LTI system time-domain analysis mould
Block (13), signal frequency domain analysis module (14), continuous multifrequency domain analyzing module (15) and discrete Z domain analyzing module (16), it is described
Baseband signal generation module (12) is used for the generation of signal, the sequence basic operation module (11) be used for the signal of generation into
The operation of sequence, the LTI system time-domain analysis module (13), signal frequency domain analysis module (14), continuous multifrequency domain analysis mould
Block (15) and discrete Z domain analyzing module (16) are respectively used to carry out comprehensive analysis to signal.
3. a kind of communication engineering Specialty Experiment platform according to claim 1, which is characterized in that the Digital Signal Processing
Platform (2) includes M sequence computing module (21), discrete Fourier transform module (22), convolution algorithm module (23), digital filtering
Device (24) and Butterworth filter (25), the M sequence computing module (21) is for testing the calculating process of M sequence
Study, the discrete Fourier transform module (22) are used to obtain its frequency spectrum letter using Fourier transformation to time-continuous signal
Number, the convolution algorithm module (23) is for handling filter in spatial domain, the digital filter (24) and Butterworth
Filter (25) is observed and is learnt to different wave for student.
4. a kind of communication engineering Specialty Experiment platform according to claim 1, which is characterized in that the Principle of Communication platform
It (3) include analog-modulated module (31), Digital Baseband Transmission module (32), digital band transmission module (33) and analog signal number
Word module (34), the analog-modulated module (31) include amplitude modulator zone and angle modulated area, the amplitude modulator zone packet
Carrier signal, modulated signal, DSB-SC signal, AM signal, VSB signal and SSB upper side band signal, the amplitude modulation are included
The parameter in area is manually entered, and for seeing corresponding figure in Tu Qu after being configured, the angle modulated zone has frequency modulation
The button of signal checks adjust corresponding with angle parameter in corresponding graphics field by button after angle parameter setting
Frequency curve；
The Digital Baseband Transmission module (32) includes baseband signal eye figure, raised cosine roll off system and digital baseband signal, is led to
Cross observation of the adjustment variation completion of parameter to the waveform of different digital baseband signal；
The digital band transmission module (33) in bandpass signal channel for transmitting, specially to 2ASK signal, 2FSK signal
It is observed and is learnt with 2PSK signal；
The analog signal digital module (34) includes sampling and non-uniform quantizing two subsystems, defeated in sampling subsystem
After the amplitude, frequency and sampling rate that enter low-pass signal, observe that original signal, sampled signal and sampling restore letter in Drawing zone
Number waveform；In non-uniform quantizing subsystem, quantized interval and compression property are illustrated, so as to observe A rule and U
Restrain compression property curve.
5. a kind of communication engineering Specialty Experiment platform according to claim 1, which is characterized in that the Digital Image Processing
Platform (4) include image gray levels correction module (41), image smoothing filtering technique module (42), image sharpening processing module (43),
Image statistics module (44), block encription module (45), JPEG compression coding module (46) and motion estimation module (47).
6. a kind of communication engineering Specialty Experiment platform according to claim 1, which is characterized in that the Speech processing
Platform (5) includes short-time analysis module (51), homomorphic analysis module (52), linear analysis module (53), pitch evaluation module
(54), voice synthetic module (55) and speech enhan-cement module (56).
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