Linked from
The 22 pages that link to Signal modulation, each with the reason it gives.
BroadcastingRelated: Radio broadcasts encode sound or pictures by varying a carrier wave.
BandwidthRelated: Modulation places information within a channel’s available frequency range.
ModemNarrower topic: A modem’s transmitter encodes data by changing a carrier signal’s properties.
Phase modulationNarrower topic: Phase modulation is one way to vary a carrier to convey information.
DemodulationNarrower topic: Demodulation reverses the encoding operation performed by modulation.
BaudRelated: Modulation maps symbols onto distinguishable changes in a transmitted waveform.