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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$2%
Digital Signal Drawback "3&%
Overhead #&%13&%&( )&&%
Data Modulaon:
&
# )&
"&
"&&%")&$%
 $& &3*
*%
% &&& "&' 
43"&%3&'&$%&
&"&&&'$%&
$$2526)%&
Simplex: &
Half-Duplex Transmission: $&$
Full-Duplex: $&7&& )
Full-Duplex Advantage:&%&
"&#%&($&%
Mulplexing: "&
Subchannels: 2
Mulplexer (mux): $
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&&'$ );
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