1
Chapter 2: Transmission Media
Analog vs. Digital Signals
2
Analog Signal Properties
Telegraph
3
Repeater
Coaxial Cable
4
Refraction vs. Reflection
Light Transmission Through Fiber
5
Dealing with Modal Dispersion
Single Mode Fiber
6
Electromagnetic Spectrum
Signal Reception
8
Towers as Repeaters
Satellite Communications 1
9
Satellite Communications 2
Satellite Bands
10
Atmospheric Interference
Signal Overlap
11
No Signal Overlap
Low Earth Orbit Satellites
12
Signal Relay via Satellites
Teledesic Satellite
14
Wireless LAN’s
Max frequency: 2.4 GHzData rate: up to 100Mbs possible
Bluetooth
Wireless technology for connecting electronic devicesDistance up to 10 meters, data rate about 1Mbps
15
Codes
Baudot Code
16
ASCII Code Transmission
17
End of Chapter 2