Introduction: Communication technology taxonomy, communication channel and its structure, signal classification, time domain signal characteristics, selected signals: Rectangular pulse, Diraqe pulse, unity step pulse. Periodical signals: Definition and characteristics, Fourier series and spectra. Selected periodic signals and their characteristics, relation between the time and frequency domains. Non-periodical signals: power and energetic signals, Fourier transform, spectrum of non-periodical signals, selected non-periodical signals, their characteristics and spectra. Relation between the Fourier series and the Fourier transform. Radio path: Characteristics, structure of the radiopath, spherical and plane wave propagation, propagation loss, refraction, multipath phenomena. Antennas: their characteristics, radiocommunication (beacon) equation, power budget of the radiopath, transmitter and receiver. Optical path: Basic characteristics of the optical path, optical spectra, optical path structure. Propagation of the optical energy through the optical fiber, types and characteristics of the optical fibers, power budget of the optical path. Channel capacity, transport and modulation velocity. Modulation - definition and reasons of application. Multiplexing, definition and type of multiplex. Amplitude modulation of the harmonic carrier (AM): AM signal description, spectra, types of AM. Modulators and demodulators, coherent demodulation, carrier regeneration. Angle modulation: relation between phase (PM) and frequency (FM) modulations, spectra, modulators and demodulators, phase lock loop, application of PM, FM. Discrete modulations of the harmonic carrier: ASK, FSK (CPM, MSK, GMSK), PSK (BPSK, QPSK, OK PSK), QAM. Multicarrier modulation DMT, OFDM, principles and characteristics.
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The subject aim is to make students acquainted with the basic principles of signal and information transfer and processing and with the signal processing technology in communication. In the course the determined signals characteristics, signal spectra, telecommunication network and channels structures, radio path, optical path, analogue and discrete modulation, realization of modulators and demodulators.
The students acquire theoretical and practise knowledge and skills of signal and information transfer and processing.
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