PHYSICAL LAYER AND TRANSMISSION MEDIA
DIGITAL TRANSMISSION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Quadrature amplitude modulation is a combination of ____ & ____
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ASK & FSK
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FSK & PSK
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PSK & QAM
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ASK & PSK
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Explanation:
Detailed explanation-1: -As shown QAM is the mixture of both ASK and PSK. Hence, amplitude and the phase of the carrier frequency both vary with the message signal.
Detailed explanation-2: -Quadrature amplitude modulation (QAM) is a technique that mixes both amplitude and phase variations in a carrier at the same time.
Detailed explanation-3: -Key Takeaway: QAM (quadrature amplitude modulation) is a modulation scheme used by network operators when transmitting data. QAM relates to a way of changing the amplitude, or power level, of two signals. QAM enables an analog signal to efficiently transmit digital information and increases the useable bandwidth.
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