Electrical and Computer Engineering

456. Communication Systems.  An overview of digital and analog communication systems.  Conditioning of data signals to the channel.  Modulation and demodulation techniques.  Sampling and quantizing.  Limitations on system performance due to channel constraints, including power, bandwidth, and noise.  Modem system configuration  including an introduction to telecommunications.  Three lectures.  (Cr.4) 

Prerequisites: EECE 303, 315.

Prerequisites by Topic:

                                1.    Time and Frequency Domain representation of signals.

                                2.    Basic concepts of probability

                3.    Basic electronics   

Course Goals: 

1.        To provide a solid background for other more advanced topics in Telecommunications, Computer Networks, Cellular and mobile communications, Fiber Optic Communications, multimedia, etc. 

2.       Familiarize the student  with the applications communications systems theory and their  social impact.   

3.        Present  the evolution, trends and challenges in design of  communications devices both domestically  and globally.   

4.       To apply knowledge of probability and signals and systems theory  to the modeling,  analysis and design of simple communications  devices for transmission of  analog signals such as audio and video, and digital such as  digitized voice and  video, and computer  data.   

5.       Evaluate and study means for improving  the performance of  communications systems subjected to transmission impairments such as noise and interference.   

6.       Utilize computer programs to assist the analysis and design of systems.   

7.       Conduct research on a subject, working on a team and  using resources such as the library and the Web,  and present results using modern presentation techniques and a written report.   

8.       To instill time management skills.   

Course Objectives:

The student will:   

·         Study the

       Ø       historic evolution of communication systems   

Ø       transmission techniques of analog and digital data in the baseband, without any modulation.

Ø       Conversion of Analog signals to Digital data

Ø       Coding techniques for the reduction of transmission errors.

Ø       Coding  techniques for efficient use of power and Bandwidth

Ø       About Intersymbol Interference Reduction and  Equalizers   

·         Learn about

Ø       Radio Frequency Modulation (AM, SSB, FM, Spread Spectrum, etc)

Ø       Analysis and implementation of: Mixers, Phase Locked Loops, Discriminators, etc

·         Degradation of performance due to noise, multipath, interference, etc,  evaluation of performance of  the above modulation techniques under such impairements, and means of performance improvement.

·         Solve  problems involving the design of a device given a set of specifications and finding some of its parameters or components.   

·         Solve a  number of problems  using software packages such as: PSPICE, MATLAB and Simulink, MATHCAD, MAPLE,VisSim,  etc.

·         Will implement a research project from a list of options, present results, and write a report.

·         Will be taught how to exchange ideas in solving problems using  modern tools such as   e-mail or the forum pages of the ELEC456 course Web page. 

Course Syllabus:   

TEXT: Digital and Analog Communication Systems by Leon Couch II. 6 -Th Edition  Prentice Hall 

Additional REFERENCES: Principles of Communications by R. Ziemer and W. Tranter                  4-Th edition, J.  Wiley

Modern Communication Systems by L. Couch, Prentice Hall

Analog and Digital Communication Systems by Martin Roden, 4-Th edition Prentice Hall  

TOPIC                                                                                                                                    READING/#of lectures

INTRODUCTION :Definition of Communication Systems,                                                                3 lectures 

Historic Review                                                                                                1.1 1.6

Channel Characteristics                                                                                   Notes

Standards Organizations, Frequency Allocations (Tbl 1.2)                             1.7

Propagation of Electromagnetic Waves                                                               1.8

 System Analysis Techniques-                                                                          notes

Probabilistic Approach to System Optimization                                              notes

Information Theory and Shannon, Signal to Noise ratio and Capacity,   1.9. 1.10

Coding(Summary)                                                                                                     1.11  

SIGNALS AND LINEAR SYSTEMS REVIEW                    1.3, 2.1-2.5, notes/3lect

LINEAR SYSTEMS response, transfer function, filters, distortion   2.6, 4.5, notes

Sampling Theorem, Bandpass sampling                                                            2.7, 4.6

Discrete Fourier Transform and its use to compute the F.T.                                  2.8

Definition of Bandwidth(Absolute, 3dB, FCC, etc)                                                  2.9

PROBABILITY THEORY REVIEW                                                             Appendix B

Axioms, Random variables, Moments(Expectation, Second etc), Variance,  notes/2 lect

Moment Generating Function   

BASEBAND PULSES                                                                                        3.1-3.6/ 10 lect

Physical sampling (Pulse Amplitude Modulation -PAM),PCM                                          

DIGITAL SIGNALING(Binary and Multilevel signaling)Overview                            

Line Codes and Spectra (Binary, Differential coding).Overview 

repeaters and Bit synchronization,                                                                                

Eye Patterns and Intersymbol Interference, Filtering Overview                            

Drawbacks of PCM and Differential PCM, Delta Modulation,                   3.7 -3.9/ 3 lect

Time division Multiplexing(TDM) using T1 as an example                                       

Pulse Time Modulation (PTM)-Pulse Width Modulation,                                          3.10

Pulse Position Modulation                               

BANDPASS SIGNALING,                                                                                                        

AM, FM, AND DIGITAL MODULATED SYSTEMS                                            

AM, DSB, Phase Locked Loops, SSB, VSB,Transmitters, Receivers   5.1,5.2, 4.3,4.11, /3 lect

Coherent and noncoherent detectors (Prons and Cons)                4.13,  5.3, 4.14, 5.5. 4.16                                                                     

Angle Modulation(Phase and Frequency modulation                                5.6, 4.13//3 lect

Frequency Division Multiplexing                                                                       5.7, 5.8/1 lect

Binary Modulated Bandpass signaling(OOK,BPSK,DPSK,FSK)                       5.9/ /3 lect

Multilevel Mod. Bandpass Signaling(QPSK,MPSK,QAM),MSK

Spread Spectrum Systems and Cellular Telephone Communications               5.12/ 2 lect     

RANDOM PROCESSES AND SPECTRAL ANALYSIS

Stationarity, ergodicity                                                                                         6.1-6.7/3 lect

Power Spectral density, properties, Average Power                                                                    

Filtering of random processes, Gaussian Proceses, White noise, Filtered noise     

PERFORMANCE  EVALUATION OF

COMMUNICATIONS SYSTEMS CORRUPTED BY NOISE                 7.1-1.5, 7.8/ 6 lect

Error Probabilities for binary signaling, Matched Filter,-Baseband systems                

Performance Bandpass binary systems-

Coherent detection and noncoherent detection,                                                                             

QPSK and MSK, and PCM Systems,                                               

Performance of Analog Systems , AM,

AM with envelope detection,DSB, SSB, PM, FM                       

Performance evaluation comparison of digital techniques                                         7.6          

Performance evaluation comparison of Analog Techniques                                     7.9             

SOME PRACTICAL ASPECTS OF  COMMUNICATIONS SYSTEMS ARE DESCRIBED IN CHAPTER 8. READ THIS CHAPTER 

ABET category as estimated by faculty member who prepared this course description:   

                                Engineering Science:  1 credits or 33% 

                                Engineering Design:   2 credits or 66%