Fall 2009
Assignment 2
Reading:
1.
Nader Mir,
Computer and Communication Networks
, Chapters 5, 6, 13 and 14.
2.
Professor Cantrell’s
review of digital communications
(corresponding to items 1 and 3 in the syllabus)
3.
Professor Cantrell’s
survey of Layer 2 technologies
Graded Exercises:
1.
Nader Mir,
Computer and Communication Networks
, Chapter 3, Problem 1.
2.
Nader Mir,
Computer and Communication Networks
, Chapter 3, Problem 2.
3.
Nader Mir,
Computer and Communication Networks
, Chapter 4, Problem 1.
4.
Nader Mir,
Computer and Communication Networks
, Chapter 4, Problem 2.
5.
The bit string 100101011 emerges from the serializer unit of a modulator. Sketch the waveforms that emerge from
the line driver if the line coding is:
(a)
Natural NRZ
(b)
Polar NRZ
(c)
Manchester
6.
Find the information content per symbol,
H
(
X
)
, where
X
is the set of letters A–Z of the North American Latin
alphabet. The table of English letter frequencies on the following page may be useful. (Note that the frequencies
are percents; thus, 12.75 percent of the symbols in a typical English message are the letter ”e”.)
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- Spring '09
- CANTRELL
- Character encoding, Morse code, communication networks, Nader Mir
-
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