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Unformatted text preview: omain signal at the output is
S (ω ) = Sc (ω ) + Sc (ω )
[M (ω + ω2 − ω1 )H (ω + ω2 ) + M (ω − ω2 + ω1 )H (ω − ω2 )]
Consider the second term, which represents the positive-frequency part of the signal. The ﬁlter H (ω − ω2 )
will pass all frequencies within the range ω2 ± π W . The overall width of this ﬁlter is 2π W which is just
wide enough to pass one sideband. The term M (ω − ω2 + ω1 ) is nonzero in the range ω2 − ω1 ± 2π W .
If we place the center of M (ω − ω2 + ω1 )...
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This homework help was uploaded on 03/13/2014 for the course ECE 453 taught by Professor Staff during the Spring '08 term at University of Illinois, Urbana Champaign.
- Spring '08