Discussion
In the vestigial sideband amplitude modulation (AM-VSB), the transmitted signal has a bandwidth of ..............., where B is bandwidth of original analog signal.
Answer: B
The transmitted bandwidth of VSB is B + Δ.
Vestigial sideband modulation sends one sideband in full (bandwidth B) plus a small vestige of the other sideband, of width Δ. The total bandwidth is therefore B + Δ, more than single sideband (B) but much less than double sideband (2B). Television broadcasting used VSB for this reason.
B − Δ would be less than one full sideband, and the ± forms do not describe a single bandwidth.
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