Lecture 1: Course information Communication Systems overview Aliazam Abbasfar
Outline Course Information and policies Course Syllabus Communication Systems
Course Information Instructor : Aliazam Abbasfar
[email protected] 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
