20801998 - DIGITAL COMMUNICATIONS

To acquire specific knowledge on digital communications techniques.
To learn the major methodologies for design and planning of point to point and point-to-multipoint digital radio links.
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Programme

Classical Detection Theory: Bayes and Minimax procedures. Binary Hypothesis Tests. Detection of signals in additive Gaussian noise. M Hypotheses tests. Thermal noise modelling in active and passive circuits and networks. Channel modelling. Intersymbol Interference. ASK, QAM, and PSK Modulation: principles, architectures and performance assessment. Optimal and suboptimal systems. OQPSK and MSK modulations. Spread Spectrum techniques. Direct Sequence Code Division Multiple Access (CDMA). OVSF Walsh-Hadamard expansion codes. Shift register based pseudo random sequences. Gold and Kasami codes. Adaptive rate control. Performance analysis: synchronous and asynchronous reception. Multipath and fading channels: wide sense stationary uncorrelated scattering (wwssu) model. Rake receiver for multipath channels: architecture and DS-CDMA performance. Orthogonal Frequency Division Multiplexing. Time and frequency domain representations of OFDM signals. Modulation/demodulation architecture. Fast Fourier Transform Algorithm. Equalization in the Discrete Fourier Transform domain. Cyclic prefix use. OFDM performance analysis. Diversity and combining techniques, MIMO systems and cooperative communications. Error control coding.

Core Documentation

A. NERI. "APPUNTI DALLE LEZIONI DI TRASMISSIONI NUMERICHE".
DISPONIBILE GRATUITAMENTE IN FORMA ELETTRONICA DAL SITO HTTP://ELEARNING.DIA.UNIROMA3.IT/MOODLE/.

Safak, Mehmet. Digital Communications, John Wiley & Sons, Incorporated, 2017. Freely readable for ROMA TRE students at ProQuest Ebook Central, https://ebookcentral.proquest.com/lib/uniroma3-ebooks/detail.action?docID=4786293.