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Amplitude modulation
The early and simple form of modulation for radio communication. Explore AM modulator, demodulator, transmission examples, modulation trapeze ...
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Spectra of FM signals
Frequency modulation signal spectra show sidebands for sinewave modulation. In this experiment we take a look how they change with the modulating signal amplitude.
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FM transmitter
Produce a frequency modulated transmission signal. Select music, speech, microphone or take your own audio file. Demodulate the signal using the FM receiver or let a USRP SDR transmit...
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FM receiver
Demodulate the FM transmission signal. Listen to the received music or speech. Check if you modulated the audio signal properly and the frequency deviation is adjusted properly...
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Analog demodulation
In this experiment, four-channel signals are available for practicing demodulation. Each of the channels is modulated in a different way.
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Analog demodulation challenge
In order to deepen amplitude and frequency modulation and demodulation an experiment was designed.
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SSB modulation
Amplitude modulation made radio broadcasting possible. Single sideband modulation made it possible to improve it, by saving bandwidth. Analyze a SSB-signal in time and frequency domain and change parameters...
See also: | Frequenzmodulation | Frequency modulation audio demo | FM transmitter (2) - transmit recorded signal from file to USRP |