Basics of Communication System | Physics | Lecture - 23

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Textbook for reference: NCERT
0:00 Intro
1:44 Block diagram of Communication System : Explained
3:46 Signal Bandwidth
4:47 Air as Medium of Transmission
4.57 Ground Wave
5.03 Sky Wave -Line of Sight (LOS)
5:13 Space Wave
5.44 Atmospheric Communication
6.41 Physical Transmission Medium- Coaxial Cable
7.02 Physical Transmission Medium- Optical Fibers
7.26 Noise Equivalence Bandwidth
9.14 Signal to Noise Ratio (S/N)
9.31 Modulation
9.56 Demodulation and Modem
10:30 Base Vs Broadband
11.13 Increase in height of Antenna with Frequency
11.48 Different Types of Modulation - AM, FM, PM
13.03 Amplitude Modulation (AM)
13.27 AM Generation
13.44 AM Receiver
14.25 Need For Modulation
14.35 Outro


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