lecture 6 the communication system finalterm slides
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04/13/23 1
Ideal and Ideal and Practical FiltersPractical Filters
Lecture 6Lecture 6
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DiscussionDiscussion Causal signal starts at t=0 and continues to run towards t-infinity.
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Digital Filters
Advantages
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3.6 Signal Distortion over a Communication Channel3.6 Signal Distortion over a Communication Channel
Effects on TDM &FDM:
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Figure: 3.35 a & b
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Energy Spectral Density (ESD)Energy Spectral Density (ESD)
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Energy Spectral Density (ESD)Energy Spectral Density (ESD)
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See example 3.21 yourself
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Energy of Modulated SignalsEnergy of Modulated Signals
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LTIH(t); H(w)
g(t)
G(w)
y(t)
Y(w)
Linear Time Invariant System
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Power Spectral densityPower Spectral density
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Signal Power Is Its Mean SquareSignal Power Is Its Mean Square
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Interpretation of PSDInterpretation of PSD
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Home AssignmentsHome Assignments
Solve the following Problems from the exercise:
• 3.1-1, 3.1-2, 3.1-3, 3.1-4, 3.1-5• 3.2-2, 3.2-3, 3.2-3, 3.2-5, • 3.3-1, 3.3-2, 3.3-3, 3.3-4, 3.3-5, 3.3-7• 3.4-1
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