Q3: Fig. below represents the receiver of quadrature multiplexing scheme, where $(t) = fi(t)cosw.t + f1(t)cosw̟t Let the local carrier at The receiver have a phase error of 0,. Radian as cos (@,t+0,)

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Type your question here Fig. below represents the receiver of quadrature multiplexing scheme, where ?(?) = ?1 (?)????? ? + ?1 (?)????? ? Let the local carrier at The receiver have a phase error of ?? . Radian as shown in the figure. a- Derive an expression for ?1(?) if ?? is small. b- Estimate how small ?? should be to keep the interference caused by ?2(?) at least 20 dB if ?1(?) and ?2(?) are of equal magnitude.
Q3: Fig. below represents the receiver of quadrature multiplexing scheme, where
$(t) = f;(t)cosw.t + f;(t)cosw̟t
Let the local carrier at The receiver
have a phase error of 0,. Radian as
cos (@t+0,)
shown in the figure.
LPF
ei (t)
a- Derive an expression for e,(t) if
D(t)
0, is small.
b- Estimate how small 0, should be to
LPF
e2 (t)
keep the interference caused by
sin (@t+0.)
f2(t) at least 20 dB if fi(t) and
f2(t) are of equal magnitude.
Transcribed Image Text:Q3: Fig. below represents the receiver of quadrature multiplexing scheme, where $(t) = f;(t)cosw.t + f;(t)cosw̟t Let the local carrier at The receiver have a phase error of 0,. Radian as cos (@t+0,) shown in the figure. LPF ei (t) a- Derive an expression for e,(t) if D(t) 0, is small. b- Estimate how small 0, should be to LPF e2 (t) keep the interference caused by sin (@t+0.) f2(t) at least 20 dB if fi(t) and f2(t) are of equal magnitude.
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