Difference between revisions of "QAM"
From MythTV Official Wiki
m (Merge) |
|||
| Line 1: | Line 1: | ||
| + | {{Mergefrom|Quadrature Amplitude Modulation}} | ||
| + | |||
'''Quadrature amplitude modulation''' ('''QAM''') is a modulation scheme which conveys data by changing (modulating) the amplitude of two carrier waves. These two waves, usually sinusoids, are out of phase with each other by 90° and are thus called quadrature carriers — hence the name of the scheme. [http://en.wikipedia.org/wiki/QAM] | '''Quadrature amplitude modulation''' ('''QAM''') is a modulation scheme which conveys data by changing (modulating) the amplitude of two carrier waves. These two waves, usually sinusoids, are out of phase with each other by 90° and are thus called quadrature carriers — hence the name of the scheme. [http://en.wikipedia.org/wiki/QAM] | ||
Revision as of 14:29, 24 April 2006
Quadrature amplitude modulation (QAM) is a modulation scheme which conveys data by changing (modulating) the amplitude of two carrier waves. These two waves, usually sinusoids, are out of phase with each other by 90° and are thus called quadrature carriers — hence the name of the scheme. [1]
Oftentimes, the author is writing in the context of HDTV transmission. The other forms being OTA and satellite service.
