DIGITAL COMMUNICATIONS

SHE Level 5
SCQF Credit Points 15.00
ECTS Credit Points 7.50
Module Code MMI123179
Module Leader Sinan Sinanovic
School School of Computing, Engineering and Built Environment
Subject Electronic Engineering
Trimester
  • A (September start)

Summary of Content

The aim of this module is to provide students with a comprehensive and advanced understanding of digital communication techniques for data and voice within communication systems. The topics covered include decision theory criteria, optimum filtering for digital transmission and reception, digital modulation /demodulation and coding techniques. These topics will equip students with the knowledge, skills and ability to understand, compare and critically evaluate the advantages and limitations of modern digital techniques within communication systems and wireless technologies.

Syllabus

Decision Theory The basic probability formulations for communication receivers are covered: Hard and Soft Decision Receivers Bayes, MAP and Maximum Liklihood Decision criteria Optimum Filtering for Digital Tranmission and Reception Techniques to minimise signal transmission bandwidth and ISI, and to maximise signal-to-noise for detection are covered: Nyquist and Raised Cosine filters Duobinary signalling Matched filtering Correlation detection BER for optimum receivers Root Raised Cosine filters Equilisation Digital Modulation Techniques The understanding of a number of techniques are covered with appropriate mathematical formulations, error rate probability evaluations and calculations in the presence of noise. The topics covered are: Linear Modulation: BPSK, DPSK, QPSK Constant Envelope Modulation: MSK, GMSK Combined Linear and Constant Envelope Modulation: MPSK, QAM, MFSK, OFDM Influence of fading environments on decoding Practical demonstration, simulation and evaluation of a number of these implementations within current technology standards Wireless Channel Coding Techniques The design principles, mathematical formulations, evaluation and critical comparison of the main channel coding techniques within wireless systems. The topics covered are: Block and Convolution Coding: Reed-Solomon Codes Viterbi Decoding: Hard and soft decoding Trellis Coding Interleaving/De-interleaving Application of Encryption Investigative study and critical evaluation of some of these techniques within current wireless communication systems Wireless Speech Coding Techniques The design principles, mathematical algorithms, main voice data rates and standards, and critical evaluation of voice coding techniques in wireless systems. The topics covered are: General Principles of Quantisation techniques e.g. A -Law, -Law, ADPCM Linear Predictive Coding Comparison and evaluation of voice coding techniques e.g. Code Ranking Case studies on European GSM and US IS-136 Voice Codecs: RPE-LPT, VSELP

Learning Outcomes

On successful completion, students should be able to:To describe and demonstrate critical analysis, interpretation and evaluation of optimum filtering, modulation techniques, and channel and voice coding techniquesTo critically compare optimum filtering methods, modulation techniques, and channel and voice coding techniques within wireless systems.To demonstrate independent learning and problem solving in relation to wireless digital communications.To describe current research and development trends in wireless digital communications.

Teaching / Learning Strategy

The module will be delivered through a combination of lectures, tutorials, seminars, laboratories, directed study material, research presentations, case studies.

Indicative Reading

Books: I A Glover and P M Grant, Digital Communications, 2nd Edition, Pearson Education, (2004) ISBN 0130893994 T S Rappaport, Wireless Communications: Principles and Practice, 2nd Edition, Prentice Hall (2002) ISBN: 0130422320 J G Proakis, Digital Communications, 4th Edition, McGraw Hill (2001) ISBN: 0072321113 P. Nicopolitidis, M. S. Obaidat, G. I. Papadimitriou, A. S. Pomportsis, Wireless Networks, John Wiley (2002) ISBN: 047084529-5 W Stallings, Wireless Communications and Networks, Prentice Hall (2001) ISBN: 0130408646 Useful Websites: http://www.epanorama.net/links/tele_datacom.html#general Journals: Relevant articles from: IEEE Transactions on Vehicular Technology IEEE Transactions on Communications IEEE Communications Magazine IEE Electronics and Communications Engineering IEE Proceedings - Communications IEE Communications Engineer + relevant conference papers

Transferrable Skills

Development of higher level cognitive skills including analysing and synthesising skills. Development of independent learning skills. Development of information retrieval, interpretation and research skills. Development of higher level communicative skills.

Module Structure

Activity Total Hours
Independent Learning (FT) 87.00
Practicals (FT) 12.00
Assessment (FT) 15.00
Lectures (FT) 24.00
Tutorials (FT) 12.00

Assessment Methods

Component Duration Weighting Threshold Description
Exam (Exams Office) 2.00 70.00 45% Exam (Exams Office)
Coursework 1 n/a 30.00 45% Study/problem based assessment