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- Dictionaryphase modulation
noun
- 1. variation of the phase of a radio or other wave as a means of carrying information such as an audio signal.
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noun
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Phase modulation (PM) is a modulation pattern for conditioning communication signals for transmission. It encodes a message signal as variations in the instantaneous phase of a carrier wave. Phase modulation is one of the two principal forms of angle modulation, together with frequency modulation. In phase modulation, the instantaneous amplitude of the baseband signal modifies the phase of the car... Wikipedia