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EE354 : Communications System I

EE354 : Communications System I. 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

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EE354 : Communications System I

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  1. EE354 : Communications System I Lecture 1: Course information Communication Systems overview Aliazam Abbasfar

  2. Outline • Course Information and policies • Course Syllabus • Communication Systems

  3. 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 10% • Midterm 30% • Final 60% • Bonus 5% • Prerequisites: • Signals and Systems • Probability

  4. 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

  5. Course Syllabus • Communication systems overview (2) • Fourier Review (1) • Energy/Power Spectral Density (2) • Random Processes and Signals (3) • Transmission Media (3) • Amplitude Modulation (6) • Frequency Modulation (4) • Comparison of different modulations (1) • Analog to digital conversion (3) • Digital Modulation (4)

  6. 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

  7. 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)

  8. 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

  9. 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

  10. 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

  11. 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

  12. Reading • Carlson Ch. 1 • Proakis Ch. 1

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