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Lecture 3

# ITM 301 Lecture Notes - Lecture 3: Digital Subscriber Line, Network Layer, Coaxial Cable

Department
Information Technology Management
Course Code
ITM 301
Professor
Nurul Huda
Lecture
3

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Week 4

Volt 
Electrical Signal Strength 
Signals  
Analog Data Signals !
Fundamental Properes of Analog Signals:
Amplitude"
Frequency#\$%&'(&
Wavelength \$ )&(
Phase*% &'(&
Analog Signal Bene#t "\$+\$ 
Drawback of Analog Signals !&&+\$, 
Digital Signals *%*+-.+.
Byte to Decimal: /0 -&&\$0\$
Decimal to Byte: &\$\$0 \$) &
Digital Signal Bene#t 1\$2%
Digital Signal Drawback "3&%
Data Modulaon:
&
# )&
"&
"&&%")&\$%
 \$& &3*
*%
% &&& "&' 
43"&%3&'&\$%&
&"&&&'\$%&
\$\$2526)%&
Simplex: &
Half-Duplex Transmission: \$&\$
Full-Duplex: \$&7&& )
"&#%&(\$&%
Mulplexing: "&
Subchannels: 2
Mulplexer (mux): \$
Demulplexer (demux):\$&1
Time Division Mulplexing (TDM):&
Stascal Mulplexing: 8&5&6"9"
Frequency Division Mulplexing (FDM): 73%3\$&%\$
Wavelength Division Mulplexing (WDM): :'\$
Dense Wavelength Division Mulplexing (DWDM): 7&&'\$ );