Question G8A12
From subelement G8 - G8A
G8A12
Answer: DWhat is QPSK modulation?
AModulation using quasi-parallel to serial conversion to reduce bandwidth
BModulation using quadra-pole sideband keying to generate spread spectrum signals
CModulation using Fast Fourier Transforms to generate frequencies at the first, second, third, and fourth harmonics of the carrier frequency to improve noise immunity
DModulation in which digital data is transmitted using 0-, 90-, 180- and 270-degrees phase shift to represent pairs of bits