Description: 这是在matlab下实现的包络检波算法。先对信号进行调制，然后进行包络检波。-This is achieved under matlab envelope detection algorithm. First signal modulation, and then proceed to the envelope detector. Platform: |
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Author:刘天宇 |
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Description: 小学期的源程序
1．试编MATLAB程序。信号 sinc(10*t),-2<=t<=2
m(t)=
0,其它
用100hz的载波来产DSB信号并解调。完成下列工作：
画出已调信号；
求已调信号的频谱，并用图像表示。
画出解调信号；
求解调信号的频谱，并用图像表示。
2．信号
sinc2(100t),|t|≤t0
m(t)=
0, 其它
采用频率调制调制为1000HZ的载波。频偏常数为kf=50,t0=0.2。
注：（求和代替积分）
3．信号
2, t0/3>t>0
m(t)= -6, t0/3<=t<2*t0/3
0, 其它
t0=0.15,使用AM调制和包络检波解调.-Primary phase of source 1. Test procedures for MATLAB. Signal sinc (10* t),-2 < = t < = 2 m (t) = 0, the other with the 100hz signal carrier to the middle class and DSB demodulation. To complete the following tasks: Draw has been transferred signal for the spectrum signals have been adjusted, and image representation. Draw demodulation signal solving transfer spectrum signal, and image representation. 2. Signal sinc2 (100t), | t | ≤ t0 m (t) = 0, the other the use of frequency modulation of the carrier modulation for 1000HZ. Offset constant kf = 50, t0 = 0.2. Note: (sum in lieu of points) 3. Signal 2, t0/3> t> 0 m (t) =-6, t0/3 < = t < 2* t0/3 0, other t0 = 0.15, the use of AM modulation and demodulation envelope detector. Platform: |
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Author:张静 |
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Description: 包络检波matlab下实现的包络检波算法。先对信号进行-Matlab envelope detector envelope to achieve detection algorithm. First the signal Platform: |
Size: 26624 |
Author:田改生 |
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Description: 这是在matlab下实现的包络检波算法法。先对信号进行调制，然后进行包络检波。
-This is the method of envelope detection algorithm under Matlab. First signal modulation, and then proceed to the envelope detector. Platform: |
Size: 26624 |
Author:防止 |
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Description: 4FSK调制解调的matlab代码。采用相干解调的方式4FSK进行解调，与大多数方案的包络检波不同。基带信号用四种电平来表示，与调制信号相区分。-Demodulation matlab code 4FSK modulation. Coherent demodulation 4FSK demodulates Unlike most programs envelope detector,. The baseband signal is represented with four level distinguish phase with the modulation signal. Platform: |
Size: 6144 |
Author:胡佳 |
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Description: Generation of ASK:
Amplitude shift keying - ASK - in the context of digital communication is a modulation process which imparts to a sinusoid two or more discrete amplitude levels 1. These are related to the number of levels adopted by the digital message. For a binary message sequence, there are two levels one of which is typically zero. Thus the modulated waveform consists of bursts of a sinusoid.
Demodulation of ASK:
ASK signal has a well defined envelope. Thus it is amenable to demodulation by an envelope detector. Some sort of decision-making circuitry is necessary for detecting the message. The signal, which is a binary sequence is recovered by using a correlator and decision making circuitry.
Matlab Program for Frequency shift keying
program for Quadrature Amplitude Modulation
Matlab program for phase shift keying
program for Quadrature Phase shift keying-Generation of ASK:
Amplitude shift keying - ASK - in the context of digital communication is a modulation process which imparts to a sinusoid two or more discrete amplitude levels 1. These are related to the number of levels adopted by the digital message. For a binary message sequence, there are two levels one of which is typically zero. Thus the modulated waveform consists of bursts of a sinusoid.
Demodulation of ASK:
ASK signal has a well defined envelope. Thus it is amenable to demodulation by an envelope detector. Some sort of decision-making circuitry is necessary for detecting the message. The signal, which is a binary sequence is recovered by using a correlator and decision making circuitry.
Matlab Program for Frequency shift keying
program for Quadrature Amplitude Modulation
Matlab program for phase shift keying
program for Quadrature Phase shift keying
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Author:punitha sp |
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