Gurantor department | Department of Measurement and Control | Credits | 6 |

Subject guarantor | Ing. Zdeněk Macháček, Ph.D. | Subject version guarantor | Ing. Zdeněk Macháček, Ph.D. |

Study level | undergraduate or graduate | Requirement | Compulsory |

Year | 2 | Semester | winter |

Study language | Czech | ||

Year of introduction | 2004/2005 | Year of cancellation | 2008/2009 |

Intended for the faculties | FEI | Intended for study types | Follow-up Master |

Instruction secured by | |||
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Login | Name | Tuitor | Teacher giving lectures |

MAC37 | Ing. Zdeněk Macháček, Ph.D. | ||

NEV10 | prof. Ing. Pavel Nevřiva, DrSc. |

Extent of instruction for forms of study | ||
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Form of study | Way of compl. | Extent |

Full-time | Credit and Examination | 2+2 |

Combined | Credit and Examination | 2+2 |

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.

Lectures

Individual consultations

Tutorials

Experimental work in labs

Project work

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).
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.
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.

Couch L.W.II: Modern Communication Systems. Prentice Hall, New Jersey, 1994.
Couch L.W.II: Digital and Analog Communication Systems. Prentice Hall, New Jersey, ISBN 0-13-089630-6, 2002.
Chen Chi-Tsong: System and Signal Analysis. Saunders College Publishing, New York 1994.

Nevřiva,P, Macháček Zdeněk.:Modulated signals. Sylabs at WWW pages of department and at server D400,2006-2008

Verification of study:
Student must work out two laboratory works. The first one is related to the analysis of the discrete-time signal, the second one is related to the analysis of the discrete-time system. Student can receive up to 10 points for each of works. 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.
Conditions for credit:
Student must work out two laboratory works and one test. To pass the laboratory part of the course student has to gain at least 15 points from the laboratory excercices

Subject has no prerequisities.

Subject has no co-requisities.

Lectures:
Introduction: Modulated Signals and the Bandpass Signaling, the classification and the content of the course. Coherence of the theme to the courses Signals and Systems I and Signals and Systems II.
Mathematical representation of the bandpass waveforms. Basic definitions. Complex envelope representation. Representation of modulated signals.
Bandpass signal filtering.
Fourier transform of a bandpass signal. Equivalent baseband filters. Distortionless transmission.
Transfer characteristics of a distortionless bandpass channel. The group delay and the phase delay.
Bandpass dimensionality theorem.
The sampling theorem for the bandpass waveform. Bandpass dimensionality theorem for nonuniformly spaced time samples of the waveform.
Standard modulations.
Spectrum of bandpass signals.
PSD of standard bandpass signals.
Evaluation of power.
Components of of bandpass systems 1.
Filters.
Components of of bandpass systems 2.
Amplifiers.
Limiters.
Components of of bandpass systems 3.
Mixers.
Detectors.
Envelope detector.
Product detector.
Frequency modulation detector.
IQ detektor.
Components of of bandpass systems 4.
Phase locked loops.
An analog PLL and a linear model of the analog PLL.
AM signal detection using a PLL.
Transmitters and receivers.
Transmitter.
Receiver.
The Superheterodyne Receiver.
Amplitude Modulation.
AM signals.
Power of an AM signals.
AM signals and the noise.
The AM efficiency.
DSB-SC signals.
SSB signals.
Angle modulation 1
FM signals and PM signals.
Representation of angle-modulated signals.
Representation of FM and PM signals.
Angle modulator circuits.
Angle modulation 2.
FM and PM signal with sinusoidal modulation.
Spectra of angle modulated signals.
Narrowband angle modulation NBFM.
Computer labs:
The introductory laboratory lecture. The project of the laboratory communication system. The assignment of the laboratory tasks.
Bandpass signals
Matematical representation of a bandpass signal. The model verification by the measurement of signal parameters.
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. Measurement and simulation.
Amplitude modulation.
AM Signals. Representation of AM signals. AM signal analysis in the time domain and in the frequency domain. Spectra of AM signals. Power of AM signals. The percentage of modulation. The AM efficiency. DSB-SC signals. SSB signals. Measurement of parameters of AM signals and DSB-CS signals.
Angle modulation.
FM signals and PM signals.
Representation of angle-modulated signals.
Representation of FM and PM signals. FM and PM signals analysis in the time domain and the frequency domain. Spectra of angle modulated signals. Power of FM and PM signals. FM and PM signal with sinusoidal modulation. Narrowband angle modulation . Wideband frequency modulation. Measurement of parameters of NBFM and WBFM signals.
TEST No.1
Components of of bandpass systems 1
Filtrs. Construction types. Elements of filters. Filter application. Optimization criterion. Design and measurement of selected parameters. Measurement of transfer characteristics for the equivalent low-pass filter.
Components of of bandpass systems 2
Amplifiers. Limiters. Design and measurement of selected parameters.
Components of of bandpass systems 3
Mixers. Detectors. Measurement of selected parameters.
Envelope detector. Product detector. IQ detektor. Design and measurement of selected parameters.
Components of of bandpass systems 4
Phase locked loops. AM signal detection using a PLL.Design and measurement of selected parameters.
Transmitters and receivers. The AM broadcast superheterodyne receiver.
TEST No.2.
Student has to elaborate two laboratory works, that consist of both theoretical and practical part. Each laboratory work is divided into three two-hour units. Student is bounded to compile the written report on both of his laboratory works. The presumed extent of the report is about eight pages. The written report on the first laboratory work is a precondition for the successive student´s second laboratory work.
Laboratory works
1 Measurement of AM signal parameters.
Mathematical representation of AM signal. Spectra of AM signal. Power of AM signals. The percentage of modulation. The AM efficiency. Measurement of parameters of AM signals.
2 Measurement of FM and PM signal parameters.
Mathematical representation of FM and PM signals. Spectra of angle modulated signals. Power of FM and PM signals. FM and PM signal with sinusoidal modulation. Narrowband angle modulation. Measurement of parameters of NBFM signals.

Task name | Type of task | Max. number of points
(act. for subtasks) | Min. number of points |
---|---|---|---|

Exercises evaluation and Examination | Credit and Examination | 100 (100) | 51 |

Exercises evaluation | Credit | 30 (30) | 0 |

Laboratory work | Laboratory work | 30 | 0 |

Examination | Examination | 70 (70) | 0 |

Written examination | Written examination | 50 | 0 |

Oral | Oral examination | 20 | 0 |

Show history

Academic year | Programme | Field of study | Spec. | Form | Study language | Tut. centre | Year | W | S | Type of duty | |
---|---|---|---|---|---|---|---|---|---|---|---|

2006/2007 | (N2645) Electrical Engineerong, Communication and Computer Systems | (2612T041) Control and Informatics Systems | P | Czech | Ostrava | 2 | Compulsory | study plan | |||

2006/2007 | (N2645) Electrical Engineerong, Communication and Computer Systems | (2612T041) Control and Informatics Systems | K | Czech | Ostrava | 2 | Compulsory | study plan | |||

2005/2006 | (N2645) Electrical Engineerong, Communication and Computer Systems | (2612T041) Control and Informatics Systems | P | Czech | Ostrava | 2 | Compulsory | study plan | |||

2005/2006 | (N2645) Electrical Engineerong, Communication and Computer Systems | (2612T041) Control and Informatics Systems | K | Czech | Ostrava | 2 | Compulsory | study plan | |||

2004/2005 | (N2645) Electrical Engineerong, Communication and Computer Systems | (2612T041) Control and Informatics Systems | P | Czech | Ostrava | 2 | Compulsory | study plan | |||

2004/2005 | (N2645) Electrical Engineerong, Communication and Computer Systems | (2612T041) Control and Informatics Systems | K | Czech | Ostrava | 2 | Compulsory | study plan |

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