Course Outline

Week	Course Contents
W1 Introduction	• Objectives of the course, motivation, course plan, evaluation method, references. • Model of digital communication system, Gram-Schmidt orthogonalization procedure, geometric interpretation of signals.
W2 Correlators	• Response of bank of correlators to the noisy input, detection of known signals in noise, probability of error, correlation receiver, matched filter receiver. • Detection of signals with unknown phase in noise, estimation concepts and criteria, maximum likelihood estimation.
W3 PAM, TDM, PDM	• Pulse amplitude modulation (PAM), bandwidth requirements and reconstruction methods, time division multiplexing, pulse duration modulation (PDM), generation of PDM signals and reconstruction methods.
W4 A/D, Quantization, Encoding	• Analog to digital conversion, quantization and encoding techniques, application to pulse code modulation (PCM), quantization noise in PCM, companding  in PCM systems.
W5 PCM, Delta Modulator, Linear Prediction Theory	• Time division multiplexing (TDM), Examples of PAM and PCM systems.  The PCM system in telephony. • Delta modulator and its operation, quantization noise and slope overload in delta modulators.  Comparison of delta modulation and PCM. • Introduction to linear prediction theory with applications in delta modulation.
W6 Baseband Digital Communication System, Nyquist, ISI, Eye Diagram	• Baseband digital communication systems, multilevel coding using PAM, pulse shaping and band width consideration, inter symbol interference (ISI). • Nyquist condition for zero ISI, band-limited Nyquist pulses, the eye diagram.                       TEST 1
W7 Duobinary, Performance Metrics	• Duobinary and modified duo binary encoding, Optimum detection of a baseband data communication systems.  • Performance limitation of baseband data communication due to noise probability of error expression for multi-level data signals.
MID-TERM BREAK
W8 Bandpass Digital Data Systems, PSK, QPSK, FSK, QAM, QPSK, MSK, OFDM	• Bandpass (modulated) digital data systems, binary digital modulation, PSK, QPSK and FSK. M-array data communication systems, quadrature amplitude modulation (QAM), systems, QPSK and MSK. Introduction to OFDM.
W9 Noise, Optimum Binary System, Detection Schemes	• Effects of noise in modulated digital communication systems, optimum binary systems.  Coherent and Non-Coherent detection schemes.
W10 Probability Error in QAM Systems	• Probability of error expression for binary communications, probability of error in QAM systems.
W11 Application of Digital Modulation Systems	• Comparison of digital modulation systems, Application of modems for transmission over telephone lines.
W12 SSS, Frequency Hopping, CDMA	• Direct sequence SSS.  Frequency hopping SSS.  Application – Ranging multipath suppression, CDMA. Spreading sequences.
W13 Jamming, Case Study	• Jamming Margin, case studies.                                                                                 TEST 2
W14 Revision	Solving some problems Revision