thingsaurus
This is a 'thesaurus for things' or similarity engine: results show things that have something in common with what you enter. The more stars, the more things in common! You can use it for research, recommendations or simply to explore ideas and related subjects.
Here are your results for Quadrature amplitude modulation...
Stars indicate closer matches.
Analog transmission 
- Phase-fired controller
- Polar modulation
- Modulation
- 2VSB
- 4VSB
- 8VSB
- 16VSB
- 32VSB
- A-VSB
- List of amateur radio modes
- Ampliphase
- Amplitude modulation
- Amplitude modulation equivalent
- Amplitude-companded single-sideband modulation
- Angle modulation
- Armstrong phase modulator
- Beacon mode service
- Carrier shift
- Carrierless amplitude phase modulation
- Chirp spread spectrum
- Compatible sideband transmission
- Continuous phase modulation
- Continuous wave
- Controlled-envelope single-sideband modulation
- CW radio
- Damped wave (radio transmission)
- Double-sideband reduced-carrier transmission
- Double-sideband suppressed-carrier transmission
- E-VSB
- Envelope (waves)
- Fast Simple QSO
- FM-UWB
- Frequency deviation
- Frequency modulation
- Independent sideband
- Keying (telecommunications)
- Modulated continuous wave
- Modulation sphere
- Overmodulation
- Phase modulation
- Reduced-carrier transmission
- Ring modulation
- Single-sideband modulation
- Slow-scan television
- Spread spectrum
- SSB-RC
- Types of radio emissions
- Video modulation
- Data communication
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