0
Case 1 -Frequency error
Multiplier
Multiplier
Low passfilter
Low passfilter Message signal
DSB-S
C
Local oscillator
c
(
t
)=
E
c
cos(
[
c
t+
([
)
Local oscillator
c
(
t
)=
E
c
cos(
[
c
t+
([
)
Condition:
Local oscillator has the same
phase
but
different
frequency
compared to carrier signal at thetransmitter.
[
m
2
[
c
+
[
m
2
[
c
-
[
m
Low pass filter
high frequencyinformation
)(cos]cos)([)(
[([[
t t t mt
y
cc
)2(cos)(cos)()(cos)()2(cos)()(
21212121
[(
[
[(
!
[(
[(
[
!
t t t t t t t
y
cc
[(
!
cos)()(
21
t t v
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∙ 12y ago
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BW=2 fm
Draw the waveform of AM signal and DSBSC signal?
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Transactional Synchronization Extensions was created in 2012.
