| Course Unit Code | 450-4002/02 |
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| Number of ECTS Credits Allocated | 6 ECTS credits |
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| Type of Course Unit * | Optional |
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| Level of Course Unit * | Second Cycle |
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| Year of Study * | |
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| Semester when the Course Unit is delivered | Winter Semester |
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| Mode of Delivery | Face-to-face |
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| Language of Instruction | English |
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| Prerequisites and Co-Requisites | Course succeeds to compulsory courses of previous semester |
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| Name of Lecturer(s) | Personal ID | Name |
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| MAC37 | Ing. Zdeněk Macháček, Ph.D. |
| Summary |
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The course Modulated Signals and the Bandpass Signaling is closely related to the courses Signals and Systems, Fundamentals of Signals and Systems Theory and Digital Signals and Systems. It is appointed for students and professionals in electrical engineering, measurement, control, informatics and communications. Student will master the mathematical description and representation of bandpass waveforms and systems, will be acquainted with the basic bandpass signaling techniques. These are applicable to both the analog and digital communication systems. Amplitude analog modulation and the angle analog modulation schema are presented (AM, DSB-SC, SSB-SC, PBSK, PM, FM and NBFM signals). Digital modulations of bandpass signals are presented too (OOK, ASK, PSK, FSK, QAM, APSK, OFDM).
The knowledge of mathematics in the extent of the obligatory mathematical course at VŠB TU Ostrava, FEI, is the preliminary for the study of the course. Basics of physics and electrical engineering are useful. The command of the preliminary classes Signals and Systems, Fundamentals of Signals and Systems Theory and Digital Signals and Systems is assumed. Students use measurement equipments for modulated signal analyses.
The course Modulated Signals and the Bandpass Signaling deals with a rather large thema in an one-semester course. The physical meaning of the mathematical representation of the signals and systems is always discussed. For the mathematical development of some formulas describing the communication process from the statistical viewpoint is student referred to the literature. |
| Learning Outcomes of the Course Unit |
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| The course deals with the basic analog and digital bandpass signaling techniques. These are applicable to both the analog and digital communication systems. Next students study basics of the digital signal processing. Amplitude analog modulations and the angle analog modulations schema and algorithms are presented (AM, DSB-SC, SSB-SC, PBSK, PM and FM signals). Digital modulations and their algorithms are presented (OOK, ASK, PSK, FSK, QAM, APSK). Theoretical lectures are followed by the laboratory seminars. |
| Course Contents |
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Lectures:
1.Introduction: Modulated Signals and the Bandpass Signaling, the classification and the content of the course. Coherence of the theme to the courses from bachelor's study.
2.Mathematical representation of the bandpass waveforms - modulated signals. Basic definitions. Complex envelope representation.
3.Typical amplitude modulations. Mathematical formulas. Graphical characteristics of amplitude modulated signal in time and in frequency domain AM, DSB-SC, SSB-AM.
4.Typical phase and frequency modulations, QM modulation. Mathematical formulas. Graphical characteristics of phase and frequency modulated signal in time and in frequency domain PM, FM, QM.
5.Bandpass signal filtering. Equivalent baseband filters. Distortionless transmission. Transfer characteristics of a distortionless bandpass channel. The group delay and the phase delay.
6.Bandpass dimensionality theorem. The sampling theorem for the bandpass waveform. Bandpass dimensionality theorem for nonuniformly spaced time samples of the waveform.
7.Spectrum of bandpass signals. PSD of standard bandpass signals. SHV. Evaluation of power. Autocorrelation function of modulated signal.
8.Components of bandpass systems – filter, amplifier, limiter, mixer, frequency multiplier, envelope detector.
9.Components of of bandpass systems – multiplicative detector, FM signal detector, phase locked loop, transmitter, receiver.
10.Basic digital modulations basic frequency spectrum. Impulse and digital signal processing. Impulse amplitude modulation PAM. Impulse code modulation PCM.
11.Principles and types of A/D converters, D/A converters.
12.Digital bandpass modulation. Constelations. Principles and characteristics. Digital Modulation – Binary signaling - OOK, 2-ASK, BPSK, 2-FSK.
12.Digital bandpass modulation – Multilevel signaling - ASK, FSK, PSK, DPSK, QAM, APSK, OFDM.
14.Summarize lessons of Modulated signals
Laboratories:
1.The introductory laboratory lecture. The project of the laboratory communication system. The assignment of the laboratory tasks.
2.Generating and analyzing of baseband signal with parameters setting by AGILENT measurement instruments usage.
3.Matematical representation of a bandpass signal. The model verification by the measurement of signal parameters, implementation by MATLAB software
4.Modelating and measuring of analogue modulated signal AM, DSB-SC, SSB-AM, PM, FM, QM, implementation by MATLAB software.
5.Modelating and measuring of analogue modulated signal by LABVIEW software implementation
6.Measuring of bandpass analogue modulated signals with parameters setting by AGILENT measurement instruments usage.
7.Measuring and analyzing of signal modulation and signal demodulation with complex envelope detection by AGILENT software 89600VSA.
8.Frequency spectra measuring and analyzing of bandpass modulated signals by AGILENT measurement instruments usage.
9.Modelating of digital modulated signal OOK, 2-ASK, BPSK,2-FSK, ASK, FSK, PSK, DPSK, QAM, APSK, OFDM in time and frequency domain, implementation by MATLAB software.
10.Computation and mathematic simulation of chosen systems with implementation by MATLAB and LABVIEW software.
11.Measuring and analyzing system by frequency spectra transfer function characteristics and other parameters of the system..
12.Bandpass signal filtering. Equivalent baseband filters. Measurement of the filtered signal parameters. Distortionless transmission. Amplifiers. Measurement of an amplifier fequency response. Measurement of group delay and the phase delay of a bandpass signal.The sampling theorem. The sampling theorem for the bandpass waveform. Implementation by MATLAB and LABVIEW software and AGILENT measurement instruments usage.
13.Remote control and processing of measured and analyzed data from measuring instruments technology by software IO EXPLORER and VEE usage.
14.Final Laboratory Test.
Projects:
Project No.1 (10hours) - consists of modulated signal processing and signal generating in MATLAB and LabVIEW software, baseband signal generating and modulated signal generating with analyses, students have the opportunity to build transmitter and receiver.
Project No.2 (10hours) - consists of modulated signals processing and analysis by signal analyzer, students develop and analyze a system using a vector network analyzer, virtual instrumentation software VEE, students have the opportunity to build transmitter and receiver.
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| Recommended or Required Reading |
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| Required Reading: |
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Machacek Z., Nevriva P. : textbook - Modulated signals, saved in server smak.vsb.cz, Ostrava 2014.
Leon W. Couch: Digital & Analog Communication Systems (8th Edition). Prentice Hall, New Jersey,2012. ISBN 978-0132915380.
B. P. Lathi, Zhi Ding: Modern Digital and Analog Communication Systems. Oxford University Press; 4 edition, 2009. ISBN 978-0195331455.
Weiji Wang: Introduction to Digital Signal and System Analysis. BookBoon 2012. ISBN 978-8740301588.
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Macháček Z., Nevřiva P. : Skripta - Modulované signály, Ostrava. Skripta k dispozici u vyučujícího a na WWW stránkách katedry na serveru smak.vsb.cz,2012
Macháček Z. a kolektiv: Skripta - Modulované signály laboratorní cvičení, Ostrava. Skripta k dispozici u vyučujícího a na WWW stránkách katedry na serveru smak.vsb.cz,2012
Hanus S.: BEZDRÁTOVÉ A MOBILNÍ KOMUNIKACE. VUT Brno 2003.
Horák B.,Nevřiva P.: Signály a soustavy III. VŠB Ostrava, Ostrava 1998.
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| Recommended Reading: |
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| Macháček Zdeněk: Modulated signals. Materials at WWW pages of department and at server smak.vsb.cz,2014 |
| Macháček Zdeněk a kolektiv:Modulované signály-animace a měření. Podklady k dispozici u vyučujícího a na WWW stránkách katedry na serveru smak.vsb.cz,2012 |
| Planned learning activities and teaching methods |
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| Lectures, Individual consultations, Tutorials, Experimental work in labs, Project work |
| Assesment methods and criteria |
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| Tasks are not Defined |