SSB threshold_ SSB modulation "suggestions collection"

Hello everyone , I meet you again , I'm your friend, Quan Jun .

1

be based on System View Analog linear modulation system simulation

3.1.1AM

amplitude modulation

One 、 The experiment purpose ：

1.

Familiar use System View Software , Understand the operation and use of each part of the functional software .

2

Further observe and understand analog signals through experiments AM modulation 、 Demodulation principle .

3

master AM Main performance index of modulated signal

4

Compare 、 understand AM Coherent demodulation and noncoherent demodulation principle of modulation .

Two 、 Experimental content

use System View Construct a AM modulation 、 Demodulation system , Observe the output waveform of each module , understand AM modulation 、 Demodulation principle , Understand the difference between coherent demodulation and non demodulation , master AM The master of the modulated signal

Performance indicators , That is, bandwidth and power spectrum .

3、 ... and 、 The experimental requirements

1

Observe the original baseband signal 、 One 、 Modulated signal 、 The waveform of the modulated signal and the demodulated signal with noise added after passing through the channel , understand AM Modulation of modulation system 、 Demodulation principle

2

Observe the power spectral density of the above four signals , Understand the difference between them , Explain why .

3

Observe the bandwidth of the above four signals , Understand the difference between them , Explain why .

4

Adjust the noise , Observe the change of demodulator output waveform , Explain why .

5

Compare coherent demodulation with noncoherent demodulation , Understand threshold voltage .

Four 、 Circuit composition

1

AM Modulation and demodulation system model

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