Lecture 1:
Course information
Communication Systems overview
Aliazam Abbasfar
Outline
 Course Information and policies
 Course Syllabus
 Communication Systems
Course Information
 Instructor : Aliazam Abbasfar


abbasfar@ece.ut.ac.ir
Office Hours : Sat-Mon (by appointment)

 Classes: Sat-Mon 9:30/11 am
 TA : M.Rezaee
 Email list : join ASAP, webpage : ECE page
 Grading:
 HWs
 Midterm
 Final
 Bonus
10%
30%
60%
5%
 Prerequisites:
 Signals and Systems
 Probability
Class policies
 No make-up exams (DON’T MISS EXAMS!)
 Midterm: TBD
 Final:
 Academic honesty
 HW and exams should be your own work
 Turn off your cell phones during lectures
Course Syllabus

Communication systems overview
(2)



Fourier Review
Energy/Power Spectral Density
Random Processes and Signals
(1)
(2)
(3)

Transmission Media
(3)


Amplitude Modulation
Frequency Modulation

Comparison of different modulations
(6)
(4)


Analog to digital conversion
Digital Modulation
(3)
(4)
(1)
References
 A.B. Carlson, P.B. Crilly and J.C. Rutlege, Communication
Systems, 4th ed.; McGraw-Hill, 2002
 J.G. Proakis and M. Salehi, Communication Systems
Engineering, 2nd ed., Prentice Hall, 2002
 S. Haykin, Communication systems, 3rd ed., John Wiley, 1994
 L.W. Couch, II, "Digital and Analog Communication Systems," Sixth
Edition, Prentice-Hall, New York, 2001
 B.P. Lathi, "Modern Digital and Analog Communications Systems,"
3rd edition, Oxford University Press, 1998
 F.G. Stremler, "Introduction to Communication Systems," 3rd ed.,
Addison-Wesley Publishing Co., 1990
 Simon Haykin, Michael Moher, "An Introduction to Analog and
Digital Communications," 2nd Edition
Communication Systems
 Reliable (electronic) exchange of information
 Voice, data, video, music, email, web pages, etc
 Modern era started by telegraph (S. Morse 1837)
 Binary digital communications system
 Transatlantic cable (US-Europe) in 1858
 Telephone was the next breakthrough (A.G. Bell
1876)
 driven so many great inventions
 Wireless communication (G. Marconi 1890)
 Transatlantic communication
 Satellite communication
 Communication Networks (Bell Labs 70’s)
Communication System
Block Diagram
 Source encoder converts message into message signal or bits
 Transmitter converts message signal or bits into format
appropriate for channel transmission (analog/digital signal)
 Channel introduces distortion, noise, and interference
 Receiver decodes received signal back to message signal
 Source decoder decodes message signal back into original
message
Communication medias
 Wireline (wired)
 Telephony (voice, fax, modem, DSL)
 Ethernet/LAN
 Cable TV
 Backplane copper links
 Wireless (Electromagnetic)
 Over the air communication
 Radio and TV broadcast
 WLAN
 Cellular
 Radar
 Fiber optics
 High speed long haul data communication
 High traffic data transfer
Communication systems today
 Public Switched Telephone Network (voice, fax,
modem, DSL)
 Radio and TV broadcasting
 Satellite systems (TV broadcast, voice/data ,
pagers)
 Computer networks (LANs, WANs, and the
Internet)
 Cellular Phones
 Bluetooth/wireless devices
 Sensor networks
Summary
 Communication systems send information
electronically over communication channels
 Communication systems recreate transmitted
information at receiver with high fidelity
 Many different types of systems which convey
many different types of information
 Design challenges include hardware, system, and
network issues
 Focus of this class is design and performance of
analog and digital communication systems
Reading
 Carlson Ch. 1
 Proakis Ch. 1