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quadrature amplitude modulation

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quadrature amplitude modulation [¦kwäd·rə·chər ‚am·plə‚tüd ‚mäj·ə′lā·shən]
(communications)
Abbreviated QAM.
Quadrature modulation in which the two carrier components are amplitude-modulated.
A digital modulation technique in which digital information is encoded in bit sequences of specified length and these bit sequences are represented by discrete amplitude levels of an analog carrier, by a phase shift of the analog carrier from the phase that represented the previous bit sequence by a multiple of 90°, or by both.
Quadrature Amplitude Modulation - (QAM) A method for encoding digital data in an analog signal in which each combination of phase and amplitude represents one of sixteen four bit patterns. This is required for fax transmission at 9600 bits per second.
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00 Hanzo (electronics and computer science, University of Southampton, UK) overviews major single- and multi-carrier quadrature amplitude modulation (QAM) techniques in this reference for senior undergraduate and postgraduate students as well as practicing engineers and researchers.
Quadrature Amplitude Modulation: From Basics to Adaptive ... by SciTech Book News
NAA/NSC member WSNet announced that it now offers its network of multiple dwelling unit (MDU) service providers digital video via Quadrature Amplitude Modulation (QAM), one of the most cost-effective methods of providing 200 channels of digital satellite television to apartment complexes, condominiums, townhomes, retirement communities, nursing homes, marinas, RV parks, university dormitories and new housing developments.
WSNET Offers QAM Digital Video Solution by Units
BroadLogic Network Technologies, a leading innovator in high-performance silicon solutions for video processing, today announced the TeraQAM[TM] BL85000 - the industry's first ultra-dense quadrature amplitude modulation (QAM) chip for systems that transport video, voice and data signals.
BroadLogic Paves the Way to a New Era in Narrowcast and Unicast Cable ... by Business Wire
 
 
 
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