Quadrature amplitude modulation (QAM) is the name of a family of digital modulation methods and a related family of analog modulation methods widely used...
15 KB (1,924 words) - 14:58, 19 August 2024
Pulse-amplitude modulation (PAM) is a form of signal modulation where the message information is encoded in the amplitude of a series of signal pulses...
10 KB (1,094 words) - 17:12, 23 April 2024
A sinusoid with modulation can be decomposed into, or synthesized from, two amplitude-modulated sinusoids that are in quadrature phase, i.e., with a phase...
13 KB (1,505 words) - 00:25, 17 June 2024
Amplitude modulation (AM) is a modulation technique used in electronic communication, most commonly for transmitting messages with a radio wave. In amplitude...
35 KB (4,576 words) - 18:26, 17 August 2024
sideband modulation (VSB, or VSB-AM) Quadrature amplitude modulation (QAM) Angle modulation, which is approximately constant envelope Frequency modulation (FM)...
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radio waves. A refinement of amplitude modulation, it uses transmitter power and bandwidth more efficiently. Amplitude modulation produces an output signal...
33 KB (4,797 words) - 23:28, 24 August 2024
Phase-shift keying (redirect from Quadrature phase-shift keying)
and there are better, though more complex, modulations available such as quadrature amplitude modulation (QAM). Although any number of phases may be...
42 KB (6,228 words) - 19:24, 23 August 2024
Carrierless amplitude phase modulation (CAP) is a variant of quadrature amplitude modulation (QAM). Instead of modulating the amplitude of two carrier...
4 KB (483 words) - 16:01, 25 April 2024
real-valued filter Quadrature amplitude modulation (QAM), a modulation method of using both an (in-phase) carrier wave and a 'quadrature' carrier wave that...
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or PSK alone. Quadrature amplitude modulation (QAM) can be considered a subset of APSK because all QAM schemes modulate both the amplitude and phase of...
5 KB (500 words) - 03:00, 24 August 2024