Linked from

The 12 pages that link to Quadrature amplitude modulation, each with the reason it gives.

• Amplitude modulationCompared with: It uses amplitude changes alongside phase distinctions, unlike conventional AM’s single varying envelope.

• Signal modulationBroader topic: It combines two signal properties to carry multiple bits per symbol.

• Orthogonal frequency-division multiplexingRelated: Each OFDM subcarrier commonly carries a QAM symbol.

• Carrier waveBroader topic: It conveys multiple bits per symbol by varying carrier amplitude and phase together.

• Software-defined radioBroader topic: Programmable transmitters and receivers can implement or change this modulation in software.

• Cable modemRelated: Cable systems use it to carry digital data within radio-frequency channels.

• Dial-up Internet accessRelated: Later dial-up modems packed more information into each telephone-line signal.

• ModemRelated: Many high-speed modems use amplitude and phase changes to represent multiple bits per symbol.

• Phase modulationCompared with: It varies both amplitude and phase, unlike pure phase modulation.

• DemodulationBroader topic: Its receiver demodulates I/Q samples to identify transmitted constellation points.

• Frequency-shift keyingCompared with: QAM carries multiple bits per symbol through amplitude and phase choices, unlike basic FSK.

• BaudBroader topic: Its multiple constellation points let each symbol carry several bits.