450-4002/01 – Modulated Signals (MoSi)

Gurantor departmentDepartment of Cybernetics and Biomedical EngineeringCredits6
Subject guarantorIng. Zdeněk Macháček, Ph.D.Subject version guarantorIng. Zdeněk Macháček, Ph.D.
Study levelundergraduate or graduateRequirementCompulsory
Year1Semesterwinter
Study languageCzech
Year of introduction2010/2011Year of cancellation
Intended for the facultiesFEIIntended for study typesFollow-up Master
Instruction secured by
LoginNameTuitorTeacher giving lectures
MAC37 Ing. Zdeněk Macháček, Ph.D.
SCH0175 Ing. Miroslav Schneider
Extent of instruction for forms of study
Form of studyWay of compl.Extent
Full-time Credit and Examination 2+2
Combined Credit and Examination 2+12

Subject aims expressed by acquired skills and competences

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.

Teaching methods

Lectures
Individual consultations
Tutorials
Experimental work in labs
Project work

Summary

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.

Compulsory literature:

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.

Recommended literature:

Macháček Zdeněk: Modulated signals. Materials at WWW pages of department and at server smak.vsb.cz,2014

Way of continuous check of knowledge in the course of semester

Verification of study: Student must work out two laboratory works. Student can receive up to 10 points for each of project. Maximum number of points student can gain through tests is 2 * 10 = 20 points. Student has to elaborate one test. Student can acquire up to 20 points for it. Student can gain up to 20 + 20 = 40 points from the laboratory excercices. To pass the course student has to pass both the laboratory part of the course and the final exam. the Final exam consists of writing part 0 - 50 points and oral part 0 -10 points. Student have to succeed in all parts of examination (writing part minimal 10 points, oral part minimal 1 point). Conditions for credit: Student must work out two presented laboratory works (minimal limit 5 points) and one test (minimal limit 5 points). To pass the laboratory part of the course student has to gain at least 10 points from the laboratory excercices Students could work on their projects in defined consultation hours at the laboratory and by themself.

E-learning

Další požadavky na studenta

There are not defined other requirements for students.

Prerequisities

Subject has no prerequisities.

Co-requisities

Subject has no co-requisities.

Subject syllabus:

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.

Conditions for subject completion

Full-time form (validity from: 2015/2016 Winter semester)
Task nameType of taskMax. number of points
(act. for subtasks)
Min. number of points
Credit and Examination Credit and Examination 100 (100) 51
        Credit Credit 40 (40) 10
                Protocol of project No.1, Protocol of project No.2 Project 20  5
                Final test Written test 20  5
        Examination Examination 60 (60) 11
                Písemná zkouška Written test 50  10
                Oral Exam Oral examination 10  1
Mandatory attendence parzicipation: obligatory participation at all exercises, 2 apologies are accepted

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Occurrence in study plans

Academic yearProgrammeField of studySpec.FormStudy language Tut. centreYearWSType of duty
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2010/2011 (N2647) Information and Communication Technology (2612T059) Mobile Technology (01) Exchange Students P Czech Ostrava Optional study plan
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Occurrence in special blocks

Block nameAcademic yearForm of studyStudy language YearWSType of blockBlock owner
V - ECTS - mgr. 2014/2015 Full-time Czech Optional 401 - Study Office stu. block
V - ECTS - mgr. 2013/2014 Full-time Czech Optional 401 - Study Office stu. block
V - ECTS - mgr. 2012/2013 Full-time Czech Optional 401 - Study Office stu. block
V - ECTS - mgr. 2011/2012 Full-time Czech Optional 401 - Study Office stu. block