QPSK is an example of _________________ modulation.Group of answer choicesAnalog-to-DigitalAnalog-to-AnalogDigital-to-AnalogDigital-to-Digital

Answer

QPSK (Quadrature Phase Shift Keying) is an example of Digital-to-Analog modulation.

In digital communication systems, the information being transmitted is usually in digital form, represented by discrete values (0s and 1s). However, to transmit these digital signals over analog mediums, they must be modulated into analog signals. QPSK accomplishes this by varying the phase of a carrier signal to convey two bits of information per symbol, allowing for an efficient use of bandwidth.

Here’s a brief explanation of the key terms:

• Analog-to-Digital refers to the conversion of continuous signals to a digital format.
• Analog-to-Analog involves modifying an analog signal without converting it to digital.
• Digital-to-Digital pertains to the transmission of digital data without changing its form.

Since QPSK modulates digital information into an analog waveform for transmission, it fits into the Digital-to-Analog category.