Unformatted text preview: e power in a band of H herz is N0H. S is the signal power. ATTENUATION is bad because:
1. Weakened signal reduces S/N, information
2. Attenuation is usually greater at the higher
frequencies. In relaying a digital signal, it is better to
regenerate it at each relay station than to just
amplify it. GUIDED TRANSMISSION MEDIA
Twisted pair, Coaxial cable, Optical fiber
Guided media attenuation - measured in dB per
kilometer V is voltage, P is power.
Twisted Pair - a pair of wires twisted together
to reduce electromagnetic coupling to and from
the wires. Coaxial cable...
View Full Document
This note was uploaded on 01/26/2014 for the course EE 362 taught by Professor Laporta during the Fall '08 term at Penn State.
- Fall '08