What is the purpose of Frequency Division Multiplexing (FDM)?
A. To combine multiple signals into one channel by using different frequencies
B. To combine multiple signals into one channel by using different time slots
C. To modulate signals for transmission
D. To amplify the signal before transmission
Explanation:
Frequency Division Multiplexing (FDM) is used to combine multiple signals into a single communication channel by assigning different frequency bands to each signal.