Quadrature amplitude modulation is based on packing circles into circles within a phase-amplitude space.

His fundamental studies on quadrature amplitude modulation and detection led directly to the 9600 bit/s modems that provided Codex's commercial success.

The fastest four modes use OFDM with forms of quadrature amplitude modulation.

In particular, all telephone modems faster than 300 bit/s use quadrature amplitude modulation (QAM).

It can be considered as a superclass of Quadrature amplitude modulation (QAM).

AM and PM together then create quadrature amplitude modulation (QAM).

The common types of modulation that require differential coding include phase shift keying and quadrature amplitude modulation.

Quadrature amplitude modulation (QAM) is both an analog and a digital modulation scheme.

Examples include Quadrature amplitude modulation, Phase-shift keying, and Minimum-shift keying.

Owing to PSK's simplicity, particularly when compared with its competitor quadrature amplitude modulation, it is widely used in existing technologies.

QAM is Quadrature Amplitude Modulation.

I stands for in-phase, while Q stands for quadrature, referring to the components used in quadrature amplitude modulation.

Quadrature amplitude modulation (QAM)

Microwave dishes on satellites, telephone exchanges and TV stations usually use quadrature amplitude modulation (QAM).

QAM (quadrature amplitude modulation): a finite number of at least two phases and at least two amplitudes are used.

QAM stands for quadrature amplitude modulation, the format by which digital cable channels are encoded and transmitted via cable television providers.

A constellation diagram represents a signal modulated by a digital modulation scheme such as quadrature amplitude modulation or phase-shift keying.

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).

Quadrature amplitude modulation (QAM) - a combination of PSK and ASK:

General Instrument officials said they did not view the alliance's decision as a setback for their quadrature amplitude modulation, or QAM, technology, which they said was superior.

The next major advance encoded four bits into a combination of amplitude and phase, known as Quadrature Amplitude Modulation (QAM).

A type of quadrature amplitude modulation (QAM) or phase-shift keying (PSK) is used to encode the bits within each bin.

Carrierless amplitude phase modulation (CAP) is a variant of quadrature amplitude modulation (QAM).

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.

Essentially, analog VSB is to regular amplitude modulation as 8VSB is to eight-way quadrature amplitude modulation.