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Advanced Digital Communications

2E2AE2 Advanced Digital Communications Electronics and Applied Physics S8
Lessons : 12 h TD : 0 h TP : 15 h Project : 0 h Total : 27 h
Co-ordinator : Miloud Frikel
Prerequisite
Digital Transmission, Digital Signal Processing.
Course Objectives
The objective of this course is to introduce the concepts of modern digital communications, which were the starting point of the important increases in transmission rates and in digital transmissions' quality (mobile systems, ADSL, DVB, TNT, etc ...).The course is organized around three axes : first of all we start by processing the signals in baseband ( eye pattern, spectral analysis, filter synthesis, symbol error rate (SER), Nyquist criteria, etc..). Then we study digital modulations with very high rate, high spectral efficiency and high-level constellations. For wireless communications, we address the multipath channels' modelisation, and particularly, the frequency selective channels. Finally, we will approach the main advances of these last years in developing digital communication systems, especially : multi-carrier modulation (MCM) such as the orthogonal frequency division multiplexing (OFDM), multiple access (CDMA), and the multi-carriers CDMA (MC-CDMA).
Syllabus
Topics :
Digital modulations
Selective Frequency Channel
Mobile Radio channel.
Multi-carrier modulations
OFDM: Orthogonal Frequency Division Multiplexing.
CDMA: Code Division Multiplexing Access.
MC-CDMA: Multi-Carrier Division Multiplexing Access.
Practical work (TD or TP)
Some practical issues will be addressed in Labs:
Digital transmission and modulations
The channel's capacity, source coding, channel coding, eye pattern
Intersymbol interference (ISI) and Eye pattern for baseband signals.
Real-time processing for a raised cosine filter by a DSK6713 card for a QPSK transmission.
OFDM's Modulator and demodulator.
Equalization Techniques for multi-users' waveform MC-CDMA.
Acquired skills
Advanced digital communication techniques.
Bibliography
A. Glavieux and Joindot M. (1996). Digital Communications. Masson.
J. Proakis (2001). Digital Communications. McGraw Hill J. Proakis.
M. Salehi and G. Bauch (2004). Contemporary Communication Systems using Matlab. Thomson Brooks.

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