Disadvantage of DSB or SSB signal modulation

Q.  Disadvantage of using a DSB or SSB signal modulation is
- Published on 13 Oct 15

a. Difficult to recover information at the receiver
b. Carrier has to be locally generated at receiver
c. Both a and b are correct
d. None of the above

ANSWER: Both a and b are correct
 
Disadvantage of using a DSB or SSB signal modulation is that it is difficult to recover information at the receiver. Demodulation depends upon the carrier present in the received signal at the receiver. If the carrier is not present, carrier has to be regenerated at the receiver so a complex circuitry is required.

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