8/13/2019 Course Syllabus Digital Comms

1/5

Course Name: Digital Communications

Course Code:ECE

Units: 3 units lecture and 1 unit laboratory

Number of hours:3 hrs lecture and 3 hrs laboratory

Course Description: This course covers digital modulation techniques such as ASK, FSK, QAM, PSK;

pulse modulation techniques (PAM, PWM, and PCM); The Sampling Theorem; Quantizing; Baseband

Pulse Transmission; Signal Space Analysis; Passband Digital Transmission; Spread Spectrum Modulation;

Multiplexing and Multiple Access Techniques; Information Theory; Error-control Coding; Channel

Capacity; bit error rate; and Random Process.

Course Objectives: At the end of the course, the students are expected to:

1. Understand the fundamental principles of Digital Communication Systems2. Be able to analyze different Digital Communication Systems; and3. Be able to Design a Digital Communication System

Course Outline:

Lecture

I. Introduction to Digital Communication SystemsA. Basic DefinitionB. Advantages and Disadvantages of Digital Communication Systems over Analog

Communication Systems

C. Block Diagram of a typical Digital Communication System1. Description of each blocks2. Primary Communication Resources3. Sources of Information4. Properties of Medium for Digital Transmission5. Noise6. Mathematical Models of Communications Channel

D. Review on Signal Characteristics1. Classification of Signals

i. Deterministic and Random Signalsii. Periodic and Non-Periodic Signals

iii. Analog and Discrete Signals2. Properties of Signal and Noise3. Spectral Density4. Autocorrelation

II. Random Process and Probability ModelsA. Random ProcessB. Probability Models of Random Signals

1. Random Variables2. Probability of Discrete Random Variables

8/13/2019 Course Syllabus Digital Comms

2/5

3. Probability of Continuous-Valued Variables4. Probability of Finite-State Continuous Valued

III. Information TheoryA. Definition of InformationB. Discrete Memoryless SourceC. The Logarithmic Measure of InformationD. EntropyE. Source Coding TheoremF. Information Capacity Theorem

1. Harleys Law2. Shannons Limit on Information Capacity

G. Channel Coding TheoremIV. Digital Modulation Techniques (Continuous Wave Modulation)

A. Spectral and Power EfficiencyB. Amplitude Shift Keying

1. Characteristics2. Modulator Schematics3. Spectra of Modulated Signal4. Demodulation5. Equations6. Examples

C. Frequency Shift Keying1. Characteristics2. Modulator Schematics3. Spectra of Modulated Signal4. Demodulation5. Equations6. Examples

D. Phase Shift Keying1. Characteristics of PSK2. PSK waveform3. Constellation and Phasor Diagram4. Block Diagram of PSK Modulator and Demodulator5. BPSK6. QPSK7. 16-PSK8. 32-PSK9. 64-PSK

E. Quadrature Amplitude Modulation1. Characteristics of QAM2. QAM waveform3. Constellation and Phasor Diagram

8/13/2019 Course Syllabus Digital Comms

3/5

4. Block Diagram of QAM Modulator and Demodulator5. 4-QAM6. 8-QAM7. 16-QAM

F. Noise in CW ModulationV. Pulse Modulation

A. Sampling ProcessB. Pulse Amplitude ModulationC. Quantization ProcessD. PCME. Noise Consideration on PCMF. Delta PCMG. Differential PCMH. Adaptive Delta PCMI. Other Pulse Modulation

1. PWM2. PPM

J. Line CodingVI. Multiplexing

A. Pleisochronous Multiplexing1. FDM2. TDM

B. Synchronous Multiplexing1. SDH2. Sonet

VII. Multiple Access Channelling ProtocolsA. FDMAB. TDMAC. Spread SpectrumD. CDMA

VIII. Error-Control EncodingA. Sources of ErrorsB. Types of ErrorsC. Error Detection and Correction Techniques

1. Redundancy2. Retransmission3. Parity Bits4. Modulo-N5. Hamming Distance6. Hamming Bits7. CRC

D. Error Control Protocols

8/13/2019 Course Syllabus Digital Comms

4/5

References:

1. Electronic Communication Systems by Wayne Tomasi2. Digital Communications by Proaxis3. Communication Systems (4thedition) by Simon Haykin, John Wiley & Sons Inc.4. Digital Communications: Fundamentals and Applications (2ndedition) by Bernard Skylar,

Prentice Hall

5. Digital and Analog Communication Systems (5thedition) by Leon Couch II, Prentice Hall6. Other Communications Engineering books

Methods of Teaching

1. Classroom Lecture2. Experiments and Laboratory Activities3. Researches in relation to the subject4. Attending seminars, symposia, exhibits and other related academic activites

Methods to Evaluate/ Assess Students Class Performance:

1. Written and/or Oral Examination2. Practical Examination3. Assignments4. Project / Design5. Short Quizzes6. Boardworks

Grading System:

Lecture

Attendance 10%Class Participation 40%

Recitation Assignment Boardwork/Seatwork

Examinations 50%

-------

100%

Laboratory

Attendance 10%

Laboratory Activities 60%Laboratory Output Presentation 30%

------

100%

Final Grade

Lecture 40%

Laboratory 30%

Departmental Examination 20%

8/13/2019 Course Syllabus Digital Comms

5/5

-----

100%

Prepared by:

Engr Cristian S. Lazana

Faculty, ECE Department

Noted by:

Engr. Marianito P. Gallego Jr.

Chariperson, ECE Departnment