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Fundamentals of Communication Systems

Degree course Information and Communication Technologies (ICT) Engineering
Curriculum Curriculum unico
Learnings Orientamento unico
Academic Year 2016/2017
ECTS 9
Scientific Disciplinary Sector ING-INF/03
Year Second year
Time unit First semester
Class hours 72
Educational activity Formative educational activities

Single group

Professor ANTONIO IERA
Objectives The course of Fundamentals of Communication Systems aims at providing the basic notions for the study of the digital communication systems. Further objective is to provide the ability of analysing continuous-time signals both in the time and in the frequency domain as well as the interactions between signals and systems. Also the different phases characterizing the information transfer from source to destination will be analysed.
Programme 6 CFU delivered by Antonio Iera

Baseband Digital Transmission:
PCM transmission systems.
Eye pattern.
Line coding, noise interference, matched filter.
Differential modulation. M-ary systems.
ISI, I and II Nyquist method for ISI control, Roll-off cosin filter.
Bandwidth of baseband digital signals.
Error probability of baseband digital signals (the BER concept).
Reception of baseband digital signals

Digital Modulation Systems:
OOK, B-PSK,FSK modulation
Multilevel signalling.
Q-PSK and QAM modulations. MSK.
Orthogonalization of Gram-Schmidt.
Geometric representation of digital signals.
Maximum Likelihood decoders.
MAP rule. Union bound approximation.
Reception of B-PSK signals.
Reception of FSK.
Reception of Q-PSK.
M-ary modulation techniques.
Reception of M-PSK, M-ary QAM, M-ary FSK.
Comparison among M-ary modulation techniques. Spectral efficiency of M-PSK and M-FSK.

Spread Spectrum Communication Systems:
PSEUDO-NOISE sequences.
Generation of Max-length pseudo-noise sequences.
Spread Spectrum techniques.
Direct Sequence-SS.
Direct Sequence-SS coupled with BPSK.
Process Gain (PG). Jamming Margin and Error Probability.
Slow and Fast Frequency Hopping-SS.
Books • M. Luise, G.M. Vitetta, “Teoria dei Segnali”, McGraw-Hill, Milano, 1999.
• W. LEON COUCH II, "Fondamenti di Telecomunicazioni" 7a Edizione, Pearson Paravia Bruno Mondadori
• S. HAYKIN, Communication Systems, 3/e, John Wiley and Sons.
• Course material distributed by the professor
Traditional teaching method Yes
Distance teaching method No
Mandatory attendance Yes
Written examination evaluation No
Oral examination evaluation No
Aptitude test evaluation No
Project evaluation No
Internship evaluation No
Evaluation in itinere No
Practice Test No
Professor GIUSEPPE RUGGERI
Objectives The course of Fundamentals of Communication Systems aims at providing the basic notions for the study of the digital communication systems. Further objective is to provide the ability of analysing continuous-time signals both in the time and in the frequency domain as well as the interactions between signals and systems. Also the different phases characterizing the information transfer from source to destination will be analysed.
Programme 1 - Information theory (0.5 CFU): Definition of “Information” as a measurable quantity, information entropy, source coding theorem, noisy channel, repetition code, channel capacity, channel coding theorem.

2 - Continuous-time signals: Characterization of signals, Fourier transform, Existence criteria of Fourier transform, magnitude and phase spectra. Properties of Fourier transform (linearity, duality, time shifting, frequency shifting, time scaling, modulation, integration and differentiation in time, signal product and convolution). Generalized functions, delta Dirac function, Fourier transform of generalized functions.

3 - Analog system analysis: Linear and time invariant systems, impulse response, frequency response. Serial and parallel systems. Filters. Bandwidth of a signal, Bandwidth of a system. Energy spectral density (ESD), Power spectral density (PSD). Autocorrelation function. Wiener-Khintchine theorem. Non linear systems. Principles of analog modulation.

4 - Analog to digital conversion: Sampling and reconstruction. Sampling theorem. Aliasing. Uniform Quantizzation, Non-uniform quantizzation. Quantization error. A law, mu law.
Books
[1] M. Luise, G.M. Vitetta, “Teoria dei Segnali”, McGraw-Hill, Milano, 1999.

[2] Leon W. Couch, “Fondamenti di Telecomunicazioni,” Apogeo ,03 marzo 2004.
Traditional teaching method Yes
Distance teaching method No
Mandatory attendance Yes
Written examination evaluation Yes
Oral examination evaluation Yes
Aptitude test evaluation No
Project evaluation No
Internship evaluation No
Evaluation in itinere No
Practice Test No

Further information


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