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Course Catalog 2013-2014
ELT-41306 Communication Theory, 5-7 cr |
Additional information
Course home page: http://www.cs.tut.fi/kurssit/TLT-5206/
Person responsible
Mikko Valkama
Lessons
| Study type | P1 | P2 | P3 | P4 | Summer | Implementations | Lecture times and places |
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Requirements
Exam and personal project works. The course can be taken either for 5 or 7 credits. In the basic version (5 cr), the scope and level of the personal project works are more narrow than in the extended (7 cr) version.
NOTICE! *** 7 cr implementation is basically needed, or at least strongly recommended, for those targeting to study transmission techniques and wireless communications in more details. ***
The exam and the project works should be done during the same academic year.
Completion parts must belong to the same implementation
Principles and baselines related to teaching and learning
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Learning Outcomes
The student is able to identify the most common signal level phenomena and signal processing methods behind electromagnetic transmission systems as well as their significance to transmission. These include noise, modulation, and filtering, among others. The student is able to apply tools of signal and system analysis, such as Fourier transform and convolution, to study, among others, the effects of distortion, noise, and interference caused by the transmission channel and electronic components. The student is able to explain the characteristics of random signals such as correlation, stationarity, ergodicity, power spectrum, and probability distribution and is able to describe the related mathematical models. The student is able to explain the characteristics of bandpass signals, such as envelope, phase, and spectral content, and is able to describe the related mathematical models. The student is able to explain the function and characteristics of most common analog and digital modulations used in communications. The student is able to justify for practical design decisions from the viewpoint of signal power, bandwidth, and hardware implementation. The student is able to identify the basic resources related to designing communication waveforms and devices such as power and bandwidth and is able to explain the related trade-offs. The student also identifies the basic modules of radio electronics, such as filters and mixers, and is able to explain how they work. The student is able to identify the basic concepts of information theory such as information, entropy, mutual information, and channel capacity, and is able to explain their significance to transmission. After completing the extension part (7 cr) the student is able to explain and analyze properties of communication waveforms and the operation of communication devices using complex-valued signal models, and based on this, design new communication waveforms.
Content
| Content | Core content | Complementary knowledge | Specialist knowledge |
| 1. | SIGNALS AND COMMUNICATION SYSTEMS ** signal spectrum and related concepts; ability to think and understand the behaviour of signals and systems in frequency domain; Fourier transform vs. correlation analysis and spectral density ** random signals and noise; 1st and 2nd order statistics and their significance; probability densities; random signals and spectral density ** signal distortion in transmission; various distortion types and their significance ** transmission system design and the crucial resources and boundaries; bandwidth and power | ||
| 2. | BANDPASS SIGNALS AND SYSTEMS ** understanding and expressing bandpass signals; envelope and phase functions; I/Q representation ** real and complex signals; lowpass equivalent signals and systems; analytic signals and Hilbert transform ** use of complex signals in communications systems; analysis vs. implementation | - analytic signals and Hilbert transform and their significance and applications in communications signal processing in general - complex filters and filtering | |
| 3. | ANALOG MODULATION ** the concept of carrier modulation; linear modulation techniques; AM, DSB, SSB; VSB; general I/Q modulation ** angle or exponential modulations; phase and frequency modulation ** modulated signals and detection; envelope detector; synchronous detector; frequency detector ** analysis of modulated signals and their performance; spectral contents; operation in noisy channels; effects of interfering signals ** various transmission environments and the selection of modulation | - detailed mathematical analysis of angle modulations - modulators and their circuit implementations - detectors and their circuit implementations - radio receivers and architectural aspects | |
| 4. | SIGNAL SAMPLING ** waveforms and their disrete-time samples; mathematical models for sampling; discrete sequence of numbers vs. impulse train model; spectral contents of sampled signals ** sampling theorem; lowpass vs. bandpass sampling | ||
| 5. | INTRODUCTION TO DIGITAL TRANSMISSION TECHNIQUES ** discrete information and analog channels; bits, symbols and waveforms ** baseband pulse amplitude modulation (PAM); line coding and Nyquist pulse shaping; symbol alphabets; intersymbol interference (ISI) ** carrier modulation in digital transmission; linear I/Q modulation; digital frequency modulation ** digital vs. analog transmission, pros and cons ** basics of information theory; channel capacity |
Study material
| Type | Name | Author | ISBN | URL | Edition, availability, ... | Examination material | Language |
| Book | Communication Systems | A. B. Carlson, P. B. Crilly, J. C. Rutledge | 0-07-112175-7 | TUT Bookstore, Published by McGraw-Hill | Yes | English | |
| Summary of lectures | Communication Theory -lecture notes | Yes | English |
Prerequisites
| Course | Mandatory/Advisable | Description |
| ELT-40000 Tiedonsiirtotekniikan perusteet | Mandatory | |
| MAT-02500 Todennäköisyyslaskenta | Advisable | |
| SGN-11006 Basic Course in Signal Processing | Advisable |
Additional information about prerequisites
In summary:
- basic theory of linear systems and filters
- basics of transmission techniques
- basics of probability calculus
Prerequisite relations (Requires logging in to POP)
Correspondence of content
| Course | Corresponds course | Description |
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More precise information per implementation
| Implementation | Description | Methods of instruction | Implementation |
| Lectures Excercises Practical works |
Contact teaching: 40 % Distance learning: 0 % Self-directed learning: 60 % |