Minimum channel bandwidth of SSB signal

The modulation technique that uses the minimum channel bandwidth and transmitted power is


a.) FM
b.) DSB-SC
c.) VSB
d.) SSB

Correct Answer: d) SSB

Explanation:

Single Side band Transmission carries only one of the sidebands of the AM wave, which is much less than the total power required by the AM signal or the DSB-SC signal.

The total power in an AM is given by

Pt= Pc ( 1 + m2/2)

Where Pc is the carrier power and m is the modulation index.

If carrier is removed, the carrier power is also deducted and then sideband power remains.

And SSB transmission needs half the power of DSB-SC signal.
Post your comment