Electrical Communication ELC318 презентация

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Logistics Email: ahesham.inquiries@gmail.com Include [Power3rd20] in the email subject Grades: 30% mid-term exam 70% Final exam

Logistics

Email: ahesham.inquiries@gmail.com
Include [Power3rd20] in the email subject
Grades:
30% mid-term exam
70%

Final exam
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Intended Learning Outcomes (ILO’s) To review/calculate Fourier Transform of signals

Intended Learning Outcomes (ILO’s)

To review/calculate Fourier Transform of signals
To recognize the

different types of digital modulation and demodulation techniques
To Calculate main communication system parameters: bandwidth.
To Choose the best modulation/ demodulation technique for a practical engineering system and analyze the system
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Fourier Transform

Fourier Transform

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Electrical Signal

Electrical Signal

 

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Electrical Signal

Electrical Signal

 

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Electrical Signal

Electrical Signal

 

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Electrical Signal

Electrical Signal

 

 

 

 

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Electrical Signal If I tell you: “A cosine signal has

Electrical Signal

If I tell you: “A cosine signal has amplitude 1

Volt, and Frequency 50Hz” then you can draw the signal in time domain
Is there any other representation of this Cosine signal?
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Electrical Signal If I tell you: “A cosine signal has

Electrical Signal

If I tell you: “A cosine signal has amplitude 1

Volt, and Frequency 50Hz” then you can draw the signal in time domain
Is there any other representation of this Cosine signal?
Yes: Frequency domain
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Fourier Transform

Fourier Transform

 

 

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Fourier Transform

Fourier Transform

 

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Fourier Transform

Fourier Transform

 

 

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Fourier Transform

Fourier Transform

 

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Fourier Transform

Fourier Transform

 

 

 

 

 

 

 

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Fourier Transform

Fourier Transform

 

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Fourier Transform

Fourier Transform

 

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Fourier Transform

Fourier Transform

 

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Fourier Transform

Fourier Transform

 

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Fourier Transform

Fourier Transform

 

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Fourier Transform What we have seen so far is sine

Fourier Transform

What we have seen so far is sine and cosine

which are “periodic signals”
What if the signal non-periodic? How to obtain Fourier Transform
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Fourier Transform of Non-Periodic Signals

Fourier Transform of Non-Periodic Signals

 

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Fourier Transform of Non-Periodic Signals

Fourier Transform of Non-Periodic Signals

 

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Fourier Transform of Non-Periodic Signals

Fourier Transform of Non-Periodic Signals

 

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Fourier Transform of Non-Periodic Signals

Fourier Transform of Non-Periodic Signals

 

 

 

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