Digital and Analog Communication
IEE-217 E(CSE,IT)
L: 3
T: 1
Class Work:50
Exam: 100
Total:150
Duration of Exam: 3 Hrs.
Unit-1: Communication system components: Introduction to
Communication: Definition & means of communications; Digital and
analog signals: sign waves, square waves; Properties of signals:
amplitude, frequency, phase; Theoretical basis for data
communication: Fourier analysis: Fourier series and Fourier
Transform (property, ESD, PSD and Raleigh) effect of limited
bandwidth on digital signal.
Unit-2: Data Transmission System: Physical connections:
modulation, amplitude-, frequency-, phase- modulation; Data
encoding: binary encoding (NRZ), Manchester encoding,
differential Manchester encoding. Transmission Media: Twisted
pair-, co-axial-, fiber optic-cables, wireless media
Transmission impairments: attenuation, limited bandwidth of the
channels, delay distortion, noise, data rate of the channels
(Nyquist theorem, Shannon limit). Physical layer interfaces:RS
232, X.21 Unit-3: Standards in data communications:
Communication modes: simplex, half duplex, full duplex;
Transmission modes: serial-, parallel-transmission;
Synchronizations: Asynchronous-, synchronous-transmission; Type
of services: connection oriented-, connectionless-services; Flow
control: unrestricted simplex protocol, simplex stop- and -wait
protocol, sliding window protocol; Switching systems: circuit
switching; picketing switching: data gram , virtual circuits,
permanent virtual circuits.
Telephone Systems: PSTN, ISDN, asynchronous digital subscriber
line. Multiplexing: frequency division-, time-, wave- division
multiplexing
Unit-4: Security in data communications: Transmission errors:
feedback-, forward-error control approaches; Error detection;
Parity check, block sum check, frame check sequences; Error
correction: hamming codes, cyclic redundancy check; Data
encryption: secret key cryptography, public key cryptograph;
Data compression: run length encoding, Huffman encoding.
Text Book:
· Data Communications, Computer Networks and Open Systems
Halsall Fred, (4th editon) 2000, Addison Wesley, Low Price
edition
Reference Books:
· Business Data Communications, Fitzgerald Jerry, 7th Ed. New
York, 2001, JW&S,
· Communication Systems, 4th Edi, by A. Bruce Carlson, Paul B.
Crilly, Janet C. Rutledge, 2002, TMH.
· Data Communications, Computer Networks and Open Systems,
Halsall Fred, 1996, AW.
· Digital Communications, J.G. Proakiss, 4th Ed., MGH
· Satellite Communication, Pratt, John Wiley
· Data & Computer Communications, W.Stallings PHI
· Digital & Data Communication systems, Roden 1992, PHI,
· Introduction to Digital & Data Communications, Miller Jaico
Pub.
· Data Communications and Networking, Behrouz A. Forouzan, 2003,
2nd Edition, T.M.H
Note: Eight questions will be set in all by the examiners taking
at least one question from each unit. Students will be required
to attempt five questions in all.
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