◼ Sigla em inglês QAM (Quadrature Amplitude Modulation)
Significado
Esquema de modulação que transmite dados alternando, modulando, a amplitude das duas ondas portadoras. Estas duas ondas, nomalmente senóides, estão fora de fase entre si em 90° e, assim, são chamados portadores em quadratura.
Meaning
A modulation method used by cable DTV that combines changes in phase and amplitude to send four bits with each baud. Quadrature phase shift keying (QPSK) A modulation method used by satellite DTV that transmits information by varying the phase of a sine wave. (http://www.altera.com/e...)
Exemplos de tradução
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Likewise, other than the inventive concept, other transmission concepts such as eight-level vestigial sideband (8- VSB), Quadrature Amplitude Modulation (QAM)5 and receiver components such as a radio- frequency (RF) front-end, or receiver section, such as a low noise block, tuners, and down converters; along with fast fourier transform (FFT) elements, spectrum shifters, channel state information (CSI) estimators, time interpolators, frequency interpolators, equalizers, demodulators, correlators, leak integrators and squarers is assumed.
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