noun
Phase Modulation; PM
Technical term in computing and telecommunications for a modulation technique where the phase of a carrier signal is varied.
位相変調方式はデジタル通信で広く使われている。
Phase Modulation is widely used in digital communications.
位相変調 is the general term for phase modulation, while 位相変調方式 specifically refers to the method or system.
Compound of 位相 (phase) + 変調 (modulation) + 方式 (method). A straightforward technical term.