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Signal Analysis Communication Systems
Designed by Najeeb Haider Zaidi
By Najeeb Haider Zaidi
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Signal Analysis Communication Systems
Designed by Najeeb Haider Zaidi
Signal
Non Deterministic
Random (Noise)
Irregular
Deterministic
Periodic (sine)
Aperiodic
(exponential)
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Signal Analysis Communication Systems
Designed by Najeeb Haider Zaidi
Analysis of a Signal with Respect to the Time.
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Signal Analysis Communication Systems
Designed by Najeeb Haider Zaidi
Analysis of the Signal with respect to the Frequency.
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Signal Analysis Communication Systems
Designed by Najeeb Haider Zaidi
Can you write the equation of the following Function?
t42sin
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Signal Analysis Communication Systems
Designed by Najeeb Haider Zaidi
Now Try This one;
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Signal Analysis Communication Systems
Designed by Najeeb Haider Zaidi
Frequency Spectrum Plot of the signal
)122sin(35.0)42sin( tt
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Signal Analysis Communication Systems
Designed by Najeeb Haider Zaidi
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Signal Analysis Communication Systems
Designed by Najeeb Haider Zaidi
Fourier SeriesPeriodic
Fourier TransformAperiodic
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Signal Analysis Communication Systems
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A Fourier Series Decomposes a Complex Periodic Signal in the sum
of simple oscillating functions like Sine, Cosines, etc.
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Signal Analysis Communication Systems
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Fourier Transform is an operation that transforms a Complex Time
Domain Function into the Frequency Domain.
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Signal Analysis Communication Systems
Designed by Najeeb Haider Zaidi
dttfE f2)(
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Signal Analysis Communication Systems
Designed by Najeeb Haider Zaidi
2
2
2)(
1lim
T
TT
f dttfT
P
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Signal Analysis Communication Systems
Designed by Najeeb Haider Zaidi
Energy Signals are non-periodic. Power Signals are Periodic.
Energy Signals are for Finite period of Time. Power Signals are for
Infinite Period of Time. True Power Signal is Impossible to
have.
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