Question:
In the transmission of television signals in practice, a controlled amount of carrier is added to the VSB modulated signal. This is done to use
In the transmission of television signals in practice, a controlled amount of carrier is added to the VSB modulated signal. This is done to use
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Television broadcasting uses VSB with a residual carrier so that simple envelope detectors can be employed.
Updated On: Jun 25, 2026
- An envelope detector for demodulation
- A square wave detector for demodulation
- A square wave detector for modulation
- A product modulation for modulation
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The Correct Option is A
Solution and Explanation
Concept:
Vestigial Sideband (VSB) modulation is widely used in television broadcasting.
A small carrier component is transmitted along with the VSB signal.
Step 1: Reason for transmitting carrier.
If a carrier is transmitted, \[ \text{Envelope Detection} \] can be used at the receiver. This greatly simplifies receiver design.
Step 2: Select the appropriate option.
Therefore, the carrier is intentionally added to enable \[ \boxed{\text{Envelope Detection}} \] at the receiver.
Step 3: Final Answer.
\[ \boxed{\text{Correct Option (A)}} \]
Step 1: Reason for transmitting carrier.
If a carrier is transmitted, \[ \text{Envelope Detection} \] can be used at the receiver. This greatly simplifies receiver design.
Step 2: Select the appropriate option.
Therefore, the carrier is intentionally added to enable \[ \boxed{\text{Envelope Detection}} \] at the receiver.
Step 3: Final Answer.
\[ \boxed{\text{Correct Option (A)}} \]
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