EHM 351 E

Course Code: EHM 351 E

Course Name: Analog Communications

Course Objective: This course is an introduction to analog communications at the bachelor level for students in computer engineering. This core course is intended to provide an introduction to communication systems, modulation techniques, limitations in communication, spectral analysis, energy and power spectral density, and transmission of signals over linear systems. This course also focuses on the amplitude modulation (AM) techniques: Carrier amplitude modulation, suppressed carrier double sideband modulation, single sideband modulation, vestigial sideband modulation. Amplitude modulators, demodulators. Exponential modulation techniques: Frequency and phase (FM, PM) modulations. Frequency modulators, demodulators. Frequency division multiplexing (FDM). AM radio broadcasting, FM radio broadcasting, superheterodyne receivers. Stereo FM. Television broadcasting.

Course Instructor: Dr. Ferkan YILMAZ { ferkan dot yilmaz at itu dot edu dot tr }

Course Weekly Plan

• Week 1 Introduction, Fundamental Concepts in Communication, Modulation, Limitations in Communication.

• Week 2 Spectral Analysis (Fourier Series and Fourier Transform).

• Week 3 Spectral Analysis (continued), Spectral Density.

• Week 4 Transmission of Signals Through Linear Systems, Distortion, Filters.

• Week 5 Amplitude Modulation (AM), Double Sideband Modulation (DSB).

• Week 6 Single Sideband Modulation (SSB).

• Week 7 Vestigial Sideband Modulation (VSB), Amplitude Modulators.

• Week 8 Amplitude Modulators (continued)

• Week 9 Demodulation, Superheterodyne Receivers, Frequency Division Multiplexing.

• Week 10 Angle Modulation (Frequency Modulation-FM and Phase Modulation-PM).

• Week 11 Frequency Modulation (continued).

• Week 12 Frequency Modulators.

• Week 13 Frequency Demodulation.

• Week 14 Stereo FM, Radio and TV Broadcasting.

• Week 15 Final Exam (Will be announced).

Recommended books

• Fundamentals of Communication Systems, J.G.Proakis and M.Salehi, Pearson, 2nd Edition, 2014.

Supplementary books:

• • İletişim Sistemlerinin Temelleri: Fundamentals of Communication Systems, (Proakis & Salehi, Pearson, 1st Edition, 2005), Çevirenler: H. Altun, E. Öztürk, Y.E. Yenice, Nobel Yayın Dağıtım, 2010.

  • Introduction to Analog and Digital Communication Systems, S. Haykin and M. Moher, John Wiley & Sons, 2nd Edition, 2007.

  • Modern Digital and Analog Communication Systems, B.P. Lathi, Z. Ding, Oxford University Press, 5th Edition, 2018.

  • Communication Systems, S.Haykin and M. Moher, John Wiley & Sons, 5th Edition, 2009.

  • Communication Systems, A.B.Carlson, P.B.Crilly, McGraw-Hill, 5th Edition, 2010.

Teaching Methods

• Online and Expressive,

• Theoretical-Finding-Centered Discussions

Tentative Assessment and Grading Policy

• Studies in semester Number Contribution (%)

• Midterm Exams 2 40

• Quiz 0 0

• Homework Assignments Tentative 20

• Final Exam 1 40

• Total 4 100

Attendance

• There will be no attendance roll.

Course Outcomes:

At the end of this course, the student will be able to

• Understand basic concepts and constraints in analog communications.

• Analyze spectral properties of signals using Fourier series and transformation techniques.

• Understand transmission through linear systems and describe distortions such as noise and interference in transmission channels.

• Understand different types of amplitude (AM, DSB, SSB, VSB) modulations, analyze of amplitude modulated signals in time and frequency domains, design of modulator/demodulator structures.

• Understand types of exponential (FM, PM) modulations, analyze of exponential modulated signals in time and frequency domains, design of modulator/demodulator structures.

• Understand frequency division multiplexing, stereo FM and superheterodyne techniques.

• Have elemantary knowledge about radio-TV broadcasting using AM and/or FM.

• (September 22, 2020) First lecture done.