BasicB-003-012-006
What is one advantage of carrier suppression in a double sideband voice transmission?
B
Answer
Basic radio theory
Type
A
Greater modulation percentage is obtainable with lower distortion
B
More of the output power can be put into the sidebands
C
Simpler equipment can be used to receive a double sideband suppressed carrier signal
D
Only half the bandwidth is needed for the same information content
Answer Notes
In standard amplitude modulation (AM), the continuous carrier wave consumes up to two-thirds of the total transmitted power, yet it contains absolutely no voice information. All of the actual communication intelligence is carried in the sidebands.
By suppressing the carrier, a transmitter does not waste energy on an unmodulated wave and can instead dedicate its entire available power budget to the sidebands. This makes the transmission highly efficient, effectively putting more useful punch into the actual voice information.
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