quadrature amplitude modulation उदाहरण वाक्य

These packets are carried on data streams that are typically modulated onto a TV channel using either 64-QAM or 256-QAM versions of quadrature amplitude modulation.
Using circuitry developed by Motorola, C-QUAM uses quadrature amplitude modulation ( QAM ) to receivers; it is not necessary for the reconstruction of the original audio sources.
A trivial form of AM which can be used for transmitting Quadrature amplitude modulation is now more commonly used with digital data, while making more efficient use of the available bandwidth.
With more than 8 phases, the error-rate becomes too high and there are better, though more complex, modulations available such as quadrature amplitude modulation ( QAM ).
In his thesis he derived two-dimensional signal constellations that are similar to those used in the quadrature amplitude modulation ( QAM ) systems commonly used in high speed digital communications today.

Examples of these are " quadrature phase shift keying " ( QPSK ) and its generalisation as m-ary " quadrature amplitude modulation " ( m-QAM ).
In this context, the clock signal is called a " phase reference " in NTSC, which uses quadrature amplitude modulation, this is conveyed by the color burst, a synchronization signal.
Using QAM ( Quadrature Amplitude Modulation ), a CATV operator can place usually up to eight subchannels on each channel so channel 2 may actually be carrying channels 1-8 in a viewer's city.
Single-sideband has the mathematical form of quadrature amplitude modulation ( QAM ) in the special case where one of the baseband waveforms is derived from the other, instead of being independent messages "': "'
Phase modulation is closely related to frequency modulation ( FM ); it is often used as an intermediate step to achieve FM . Mathematically both phase and frequency modulation can be considered a special case of quadrature amplitude modulation ( QAM ).