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Olofsson, Mikael
Publications (10 of 14) Show all publications
Larsson, E. G., Danev, D., Olofsson, M. & Sörman, S. (2017). Teaching the Principles of Massive MIMO: Exploring reciprocity-based multiuser MIMO beamforming using acoustic waves. IEEE signal processing magazine (Print), 34(1), 40-47
Open this publication in new window or tab >>Teaching the Principles of Massive MIMO: Exploring reciprocity-based multiuser MIMO beamforming using acoustic waves
2017 (English)In: IEEE signal processing magazine (Print), ISSN 1053-5888, E-ISSN 1558-0792, Vol. 34, no 1, p. 40-47Article in journal (Refereed) Published
Abstract [en]

Massive multiple-input, multiple-output (MIMO) is currently the most compelling wireless physical layer technology and a key component of fifth-generation (5G) systems. The understanding of its core principles has emerged during the last five years, and material is becoming available that is rigorously refined to focus on timeless fundamentals [1], facilitating the instruction of the topic to both master- and doctoral-level students [2]. Meaningful laboratory work that exposes the operational principles of massive MIMO is more difficult to accomplish. At Linköping University, Sweden, this was achieved through a project course, based on the conceive-design-implement-operate (CDIO) concept [3], and through the creation of a specially designed experimental setup using acoustic signals.

Place, publisher, year, edition, pages
Institute of Electrical and Electronics Engineers (IEEE), 2017
Keywords
MIMO, Loudspeakers, Base stations, Engineering education, Wireless communication, Microphones, Radio frequency, Signal processing, Research and development
National Category
Electrical Engineering, Electronic Engineering, Information Engineering Communication Systems
Identifiers
urn:nbn:se:liu:diva-136361 (URN)10.1109/MSP.2016.2618914 (DOI)000394112900007 ()
Available from: 2017-04-10 Created: 2017-04-10 Last updated: 2018-07-14Bibliographically approved
Olofsson, M. (2011). Signal theory (1ed.). Lund: Studentlitteratur AB
Open this publication in new window or tab >>Signal theory
2011 (English)Book (Other academic)
Abstract [en]

Signal theory provides a mathematical toolbox for modeling and analysis of physical systems. Stochastic processes are used to model more or less unknown signals. Signal theory has applications in communication engineering, signal processing, automatic control, medical engineering, and more.

This book starts off by reviewing the needed background from probability theory and signals & systems. Then stochastic processes are introduced, both in discrete and continuous time, together with the important tools auto-correlation function and power-spectral density. Separate chapters focus on analyzing linear filters, sampling & reconstruction, some nonlinearities and modulation in terms of stochastic processes. The modulation chapter includes noise analyses of the considered modulation methods assuming that thermal noise dominates the picture. A separate chapter briefly covers multi-dimensional signals and systems as a preparation for image processing. A chapter on spectral estimation is included, which could be used as a basis for computer-based laborations. Problems are given at the end of each chapter. Hints and answers to most of those problems are provided in appendices.

The book is suitable for an advanced course on engineering aspects of stochastic processes. It is written with an electrical engineering student in mind, but should be useful in other engineering disciplines as well. We do not dwell on the innermost details of stochastic processes. Instead we focus on the ability to deal with stochastic processes in situations that could very well be models of real-world problems. This book provides tools and understanding that can be used as a preparation for in-depth studies of subjects such as communication engineering, image and signal processing or analysis, and automatic control, just to mention a few.

This book is intended for engineering students with a background in probability theory on one hand and signals and systems on the other hand. No prior knowledge of stochastic processes is assumed.

Place, publisher, year, edition, pages
Lund: Studentlitteratur AB, 2011. p. 281 Edition: 1
Keywords
Signalbehandling
National Category
Probability Theory and Statistics
Identifiers
urn:nbn:se:liu:diva-127634 (URN)9789144073538 (ISBN)
Available from: 2016-05-04 Created: 2016-05-04 Last updated: 2016-05-26Bibliographically approved
Olofsson, M. (2008). Additional Concepts in Signal Theory. Linköping: Linköpings universitet
Open this publication in new window or tab >>Additional Concepts in Signal Theory
2008 (English)Other (Other (popular science, discussion, etc.))
Place, publisher, year, pages
Linköping: Linköpings universitet, 2008
Keywords
Signal theory, Stochastic processes, Sampling, PAM, Non-linear systems, Modulation, Multi-dimensional processes, Spectral estimation.
National Category
Engineering and Technology
Identifiers
urn:nbn:se:liu:diva-42982 (URN)70481 (Local ID)70481 (Archive number)70481 (OAI)
Available from: 2009-10-10 Created: 2009-10-10
Olofsson, M. (2008). Tables and Formulas for Signal Theory. Linköping: Linköpings universitet
Open this publication in new window or tab >>Tables and Formulas for Signal Theory
2008 (English)Other (Other (popular science, discussion, etc.))
Place, publisher, year, pages
Linköping: Linköpings universitet, 2008
Keywords
Signal theory, Stochastic processes, LTI filtering, Sampling, PAM, Non-linear systems, Modulation, Multi-dimensional processes, Spectral estimation.
National Category
Engineering and Technology
Identifiers
urn:nbn:se:liu:diva-42983 (URN)70482 (Local ID)70482 (Archive number)70482 (OAI)
Available from: 2009-10-10 Created: 2009-10-10
Gustafsson, O. & Olofsson, M. (2007). Complexity reduction of constant matrix computations over the binary field. In: International Workshop on the Arithmetic of Finite Fields,2007 (pp. 103). Heidelberg: Springer
Open this publication in new window or tab >>Complexity reduction of constant matrix computations over the binary field
2007 (English)In: International Workshop on the Arithmetic of Finite Fields,2007, Heidelberg: Springer , 2007, p. 103-Conference paper, Published paper (Refereed)
Place, publisher, year, edition, pages
Heidelberg: Springer, 2007
National Category
Engineering and Technology
Identifiers
urn:nbn:se:liu:diva-40578 (URN)53518 (Local ID)53518 (Archive number)53518 (OAI)
Available from: 2009-10-10 Created: 2009-10-10 Last updated: 2015-03-11
Olofsson, M. (2007). Demodulation av digitalt modulerade signaler. Linköping: Linköpings universitet
Open this publication in new window or tab >>Demodulation av digitalt modulerade signaler
2007 (Swedish)Other (Other (popular science, discussion, etc.))
Place, publisher, year, pages
Linköping: Linköpings universitet, 2007
National Category
Engineering and Technology
Identifiers
urn:nbn:se:liu:diva-42339 (URN)62685 (Local ID)62685 (Archive number)62685 (OAI)
Note
Denna uppsats är avsedd som ett kompletteringsmateriel i kursen TSEI67 Telekommunikation vid Linköpings universitet.Available from: 2009-10-10 Created: 2009-10-10
Olofsson, M., Ericson, T. & Forchheimer, R. (2007). Telecommunication Methods. Linköping: Linköpings universitet
Open this publication in new window or tab >>Telecommunication Methods
2007 (English)Other (Other (popular science, discussion, etc.))
Place, publisher, year, pages
Linköping: Linköpings universitet, 2007
National Category
Engineering and Technology
Identifiers
urn:nbn:se:liu:diva-42337 (URN)62683 (Local ID)62683 (Archive number)62683 (OAI)
Available from: 2009-10-10 Created: 2009-10-10
Olofsson, M., Ericson, T., Forchheimer, R. & Henriksson, U. (2006). Basic Telecommunication. Linköping: Linköpings universitet
Open this publication in new window or tab >>Basic Telecommunication
2006 (English)Other (Other (popular science, discussion, etc.))
Place, publisher, year, pages
Linköping: Linköpings universitet, 2006
Keywords
Telecommunication, Digital communication, Channel models, Digital modulation, Detection, Error control coding, Source coding, Access methods, Mobile telephony.
National Category
Engineering and Technology
Identifiers
urn:nbn:se:liu:diva-42329 (URN)62622 (Local ID)62622 (Archive number)62622 (OAI)
Available from: 2009-10-10 Created: 2009-10-10
Olofsson, M. (2004). Telecommunication Methods - Problems. Linköping: Linköpings universitet
Open this publication in new window or tab >>Telecommunication Methods - Problems
2004 (English)Other (Other (popular science, discussion, etc.))
Place, publisher, year, pages
Linköping: Linköpings universitet, 2004
National Category
Engineering and Technology
Identifiers
urn:nbn:se:liu:diva-42338 (URN)62684 (Local ID)62684 (Archive number)62684 (OAI)
Available from: 2009-10-10 Created: 2009-10-10
Olofsson, M. (2003). Basic Telecommunication - Problems. Linköping: Linköpings universitet
Open this publication in new window or tab >>Basic Telecommunication - Problems
2003 (English)Other (Other (popular science, discussion, etc.))
Place, publisher, year, pages
Linköping: Linköpings universitet, 2003
Keywords
Telecommunication, Digital communication, Digital modulation, Detection, Error control coding, Source coding.
National Category
Engineering and Technology
Identifiers
urn:nbn:se:liu:diva-42330 (URN)62623 (Local ID)62623 (Archive number)62623 (OAI)
Available from: 2009-10-10 Created: 2009-10-10
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