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Digital & Analog Comm. Systems
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(United States Edition)
Digital & Analog Comm. Systems
8th Edition, L. W. Couch, II
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INSTRUCTOR SOLUTIONS MANUAL
(United States Edition)
Digital & Analog Comm. Systems
8th Edition, L. W. Couch, II
1 2–
24
(a.
)
M
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N
M
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k:
= °
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40
T
dt
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k
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0
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o f1
n
NOTE:
The FFT
cannot
give
the
correct
amplitude
value
for
a
delta
function
since
the
delta
function
has
an
infinite
amplitude.
However
the
area
under
the
FFT
result
that
approximates
the
delta
function
will
be
approximately
the
correct
weight
for
the
delta
function.
The
value
for
the
weight
of
the
delta
function
may
be
calculated
directily
via
the
FFT
by
using
(2-1.87).
This
is
shown
below.
V
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INSTRUCTOR SOLUTIONS MANUAL
(United States Edition)
Digital & Analog Comm. Systems
8th Edition, L. W. Couch, II
\2-25
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:=
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2
w
k
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0 t
k
100
sec
MAGNITUDE
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40
~
,
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Digital & Analog Comm. Systems
8th Edition, L. W. Couch, II
1
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Digital & Analog Comm. Systems
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e v
3
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Digital & Analog Comm. Systems
8th Edition, L. W. Couch, II
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Digital & Analog Comm. Systems
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INSTRUCTOR SOLUTIONS MANUAL
(United States Edition)
Digital & Analog Comm. Systems
8th Edition, L. W. Couch, II
1
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M
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M
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N – 1 T
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dt
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T
–
N
t
k
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WAVEFORM
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Digital & Analog Comm. Systems
8th Edition, L. W. Couch, II