Multiple Choice
Which of the following achieves high spectral efficiencies because the spacing of each carrier is as close as theoretically possible?
A) Direct-sequence spread spectrum (DSSS)
B) Quadrature amplitude modulation (QAM)
C) Orthogonal frequency-division multiplexing (OFDM)
D) Code-division multiple access (CDMA)
Correct Answer:
Verified
Correct Answer:
Verified
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