Curriculum Vitae - Communication Systems division

CURRICULUM VITAE
Dr. EMIL BJÖRNSON
[email protected]
+46-(0)13-286732
Linköping University
Department of Electrical Engineering (ISY)
Division of Communication Systems
SE-581 83 Linköping
Sweden
EDUCATION
Doctor of Philosophy in Telecommunications
KTH Royal Institute of Technology, Stockholm, Sweden.
Feb 2007 – Dec 2011
Research interests: Multi-antenna cellular communications, multi-user resource allocation with limited
channel information, estimation theory, stochastic signal processing, and mathematical optimization.
Thesis title: Multiantenna Cellular Communications: Channel Estimation, Feedback, and Resource Allocation.
Supervisors: Björn Ottersten and Mats Bengtsson.
Master of Science in Engineering Mathematics
Lund University, Lund, Sweden.
Sep 2002 – Jan 2007
Programme in pure and applied mathematics with specialization in signals, images, and systems.
Average grade: 4.9 out of 5.0. I had extra course credits corresponding to one extra year of studies.
Thesis title: Beamforming Utilizing Channel Norm Feedback in Multiuser MIMO Systems.
Thesis supervisors: David Hammarwall, Björn Ottersten, Ove Edfors, and Fredrik Tufvesson.
ACADEMIC POSITIONS
Research Fellow, Communication Systems
Linköping University, Linköping, Sweden.
Jan 2014 – [Ongoing]
I am employed as Research Fellow (swedish: Biträdande universitetslektor) in the tenure-track at Linköping
university. I work at the Division of Communication Systems, headed by Prof. Erik G. Larsson, at the
Department of Electrical Engineering (ISY). Current research interests are multi-antenna cellular communications, massive MIMO techniques, radio resource management, energy efficient communications,
multi-objective optimization theory, and network topology design.
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Post-Doc, Alcatel-Lucent Chair on Flexible Radio
Ecole supérieure d’électricité (Supélec), Gif-sur-Yvette, France.
Sep 2012 – July 2014
I conducted postdoctoral research within the topic “Optimization of Green Small-Cell Telecommunication Networks”. I was sponsored by an International Postdoc Grant that I received from the Swedish Research Council (Vetenskapsrådet). Main hosts at SUPELEC: Mérouane Debbah and Marios Kountouris.
Post-Doc, Signal Processing Lab, School of Electrical Engineering
Dec 2011 – July 2014
KTH Royal Institute of Technology, Stockholm, Sweden.
The first part (until Sept. 2012) of this postdoc consisted of fully independent research on “Optimal
Resource Allocation in Coordinated Multi-Cell Systems” and resulted in a scientific book with the same
title. During this time I also gave lectures in the PhD level course Matrix Algebra (30 hours). During the
second part (Sept. 2012 to July 2014), KTH only served as my Swedish “home university” for the international postdoc grant “Optimization of Green Small-Cell Telecommunication Networks” from the Swedish Research Council (Vetenskapsrådet). The postdoc research was conducted at SUPELEC, France.
TEACHING SKILLS
Courses in Teaching
I have taken a course on research supervision given by Linköping University: “Research supervision – Advanced Course in Higher Education Pedagogy” (4 credits). The certificate is enclosed. I have taken two courses
on applied teaching and learning, course design, and reflective practice given by KTH Learning Lab: Basic
Communication and Teaching (3 credits) and Learning and Teaching (7.5 credits). The latter two courses are part
of my doctoral degree. In summary, I have 14.5 credits in pedagogical courses.
Teaching Experience
I am currently course responsible, examiner, and lecturer in the courses TSKS02 Telecommunication (Fall
2014) and TSRT04 Introduction in Matlab (Fall 2014) at Linköping University. These courses are both on
bachelor level. The former is in English and has 20 students, the latter is in Swedish and has 160 students.
Lecturer in Matrix Algebra (Spring 2012): I held some lectures in Matrix Algebra for PhD students.
I have supervised to Master’s degree projects at KTH: “Remote sensing techniques for the retrieval of snow parameters” (2008) and “Statistics-Aware Quantization in Multi-Antenna Communication Systems” (2009).
Teaching Assistant in Signal Processing (KTH Royal Institute of Technology, Apr 2007 – Dec 2010): I
held tutorials, developed course material, held laboratory exercises, and corrected exams in the course
Signal Theory (7.5 credits) on Master level and the course Signals and Systems II (7.5 credits) on undergraduate level. Good teaching skills were confirmed in course evaluations.
Teaching Assistant in Communication Theory (Lund University, Jan 2006 – Jun 2006): I held tutorials
and computer exercises in the undergraduate course Signals and Communications (6 credits). I also had
a main role in the development of this course, including updating the curriculum and designing new
computer exercises.
Teaching Assistant in Mathematics (Lund University, Sep 2003 – Mar 2006): I held tutorials and corrected
exams in several courses on undergraduate level: Calculus in One Variable (12 credits), Calculus in Several
Variables (6 credits), Linear Algebra (6 credits), and Computational methods (3 credits).
Research Supervision
I am/was assistant supervisor of
• 1 doctoral student (Antonios Pitarokoilis) at Linköping University since Jan. 2014.
• 1 doctoral student (Axel Müller) at SUPELEC, Gif-sur-Yvette, France, from Sept. 2012 to Nov. 2014.
I have also acted as an informal assistant supervisor of 5 additional doctoral students
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Teaching Material
I have written the 270-page scientific book “Optimal Resource Allocation in Coordinated Multi-Cell
Systems,” which is published in the prestigious book series Foundations and Trends® in Communications and Information Theory, 2013. The book is co-authored by Eduard Jorswieck and is on the list of
selected publications in this application. I have given One-hour seminars based on the book at both universities (Eurécom, Supélec, KTH Royal Institute of Technology, Chalmers University of Technology,
Linköping University, and University of Luxembourg) and to the telecommunications industry (Ericsson
Research in Stockholm and Alcatel-Lucent in Paris and in Stuttgart). Three-hour tutorials were given at
PIMRC 2013 in London, UK, and ICC 2014 in Sydney, Australia.
OTHER SCIENTIFIC EXPERIENCE
Research Grants
• October 2014: I have received funding from CENIIT for the research project “Radio Resource Management in Massive MIMO Communication Systems”.
• June 2012: I was one of the first recipients of the International Postdoc Grant from the Swedish Research Council (Vetenskapsrådet). This grant funded a 2-year postdoc position at SUPELEC, France.
Scientific Publications
I have published the following (and additional papers are other review):
• 1 scientific book
• 2 overview magazine articles
• 17 international journal articles
• 37 conference papers
These publications have received 907 citations, whereof one article has 169 citations and my book has 73
citations. These citations correspond to an h-index of 14 (source: Google Scholar, 23 December 2014).
Involvement in International Research Projects
• I am currently a task leader in the project European project MAMMOET (FP7).
• Many of my research papers are published within European research projects: METIS (FP7), MORE
(ERC), HIATUS (FP7), AMIMOS (ERC), COOPCOM (FP6), and WINNER+ (Celtic).
Invited and Tutorial Speeches (selection)
• Keynote speaker at International Workshop on Computer-Aided Modeling Analysis and Design of
Communication Links and Networks (CAMAD), Athens, Greece, December 2014.
• Lecturer at 5GrEEn Summer School on “Energy Efficient Mobile Networks”, Stockholm, Sweden,
August 2014.
• Tutorial speaker at International Conference on Communications (ICC), Sydney, Australia, June 2014.
• Keynote speaker at Workshop on Wireless Evolution Beyond 2020, Istanbul, Turkey, April 2014.
• Lecturer at Newcom# Spring School on “Advanced Signal Processing Techniques for Heterogeneous Networks”, Pisa, Italy, March 2014.
• Invited speaker at Greentouch Open Forum, Paris, France, November 2013.
• Tutorial speaker at IEEE Symposium on Personal, Indoor, Mobile and Radio Communications
(PIMRC), London, UK, September 2013.
• Keynote speaker at the workshop “Signal Processing and Optimization for Wireless Communications: In Memory of Are Hjørungnes”, Trondheim, Norway, May 2013.
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Conference Committees
• I co-organized the Massive MIMO Communications Symposium at IEEE Global Conference on
Signal and Information Processing (GlobalSIP), December 3-5, Atlanta, Georgia, 2014.
• I served as a Vice-Chair of Local Arrangements at IEEE Swedish Communication Technologies
Workshop (Swe-CTW), October 19-21, Stockholm, Sweden, 2011.
• I have been a member of Technical Program Committees at the conferences GLOBECOM 2014,
ICC 2015, ICCC 2013-2014, PIMRC 2013, WNC3 2013, WCSP 2012-2014, and WCNC 2015.
• I have acted as session chair at the conferences GLOBECOM 2012, PIMRC 2013, ICC 2014, and
GlobalSIP 2014.
Reviewer of International Journals and Conferences
• I am a recurring reviewer of journal articles in IEEE Transactions on Signal Processing, IEEE Transactions on Wireless Communications, IEEE Transactions on Communications, IEEE Transactions
on Vehicular Technology, IEEE Communications Letters, and IEEE Signal Processing Letters.
• I am a recurring reviewer of papers at high-quality international conferences such as GLOBECOM,
ICASSP, ICC, SPAWC, and WCNC.
HONORS & AWARDS
Best Paper Award (first author): 2014 IEEE Wireless Communications and Networking Conference
(WCNC), for work on energy efficiency and massive MIMO communications.
Best Student Paper Award (third author, 2nd prize): 2014 IEEE Sensor Array and Multichannel Signal Processing Workshop (SAM), for work on massive MIMO communications.
Exemplary Reviewer in IEEE Communications Letters: Selected both 2012 and 2013.
Runner-Up for IEEE Sweden VT-COM-IT Joint Chapter Best Student Journal Paper Award
(first author): For “Robust Monotonic Optimization Framework for Multicell MISO Systems” on performance optimization in cellular networks, published in IEEE Transactions on Signal Processing, 2012.
Best Student Paper Award (first author): 2011 IEEE International Workshop on Computational Advances in Multi-Sensor Adaptive Processing (CAMSAP) for work on beamforming in cellular networks.
Best Paper Award (first author): 2009 International Conference on Wireless Communications and
Signal Processing (WCSP) for work on cooperative multicell and multiantenna communication.
Guest Researcher: Received grant as guest researcher at the Department of Signals and Systems (S2),
Chalmers University of Technology, Sweden, in the Spring 2013.
Travel Scholarships: Received several competitive scholarships for participating in scientific conferences during the doctoral studies (awarded from Ericsson Research Foundation and from Pleijel-fonden).
2006 DigSigProject Challenge: First place in course competition on programming for DSP cards, during Master of Science studies. Texas Instruments sponsored the competition.
2005 Algorithm Implementation Course Competition: First place in course competition on efficient
programming, during Master of Science studies.
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ADDITIONAL EXPERIENCE
Developer in Computer Vision,
Jun 2006 – Aug 2006
Axis Communications AB, Lund, Sweden.
Axis Communications is a global market leader in network video. The employment consisted of evaluation and research regarding image processing and motion detection for digital video surveillance cameras.
Writer, Photographer, Layout Man, and Equal Opportunities Ombudsman, Jan 2004 – Sep 2006
Student Union at Lund University, Faculty of Engineering, Lund, Sweden.
I was involved in the student papers Pålsjö Ängsblad and vonTänen at Lund University. The former was
distributed to 8,000 students. I was also involved in course evaluation as student representative, I was student representative in the Mathematics LTH counsel, and I acted as Equal Opportunities Ombudsman
in the society of Engineering Physics, Mathematics, and Nano Technology.
Freelancing Project Leader and Creative Writer
Apr 2000 – Sep 2005, Oct 2007 – Apr 2009
Neogames AB, Gothenburg, Sweden.
I participated in the development of several books to Eon and Neotech, two of the largest role playing
games in Sweden. The work was mostly been performed in the summer time. I acted as project leader and
leading writer for three A4 books: Showdown: Berlin (32 pages), Neotech Euro (64 pages), and Krigsherren (128
pages). I was also involved as co-writer in Eon III, Geographica Mundana, and Legender & hemligheter, and as
proofreader in Encyclopedia Mundana, Eon II, Neotech II, Neotech Ultra, and Riddaren.
Society Chairman and Webmaster of Gaming Convention,
Feb 1996 – May 2010
Swedish Association of Role Playing and Gaming (Sverok), Malmö and Linköping, Sweden.
I was chairman of a member society Gandalfs Glada Gossar (GGG) of Sverok, co-author of eight roleplaying scenarios played on various national gaming conventions, and webmaster of the convention LinCon.
SCIENTIFIC PUBLICATIONS
Scientific Books
[B1] Emil Björnson, Eduard Jorswieck, “Optimal Resource Allocation in Coordinated Multi-Cell Systems,” Foundations and Trends® in Communications and Information Theory, vol. 9, no. 2-3, pp. 113-381, 2013.
(Supplementary Matlab code is available with DOI: 10.1561/0100000069_supp)
Overview Articles
[A2] Emil Björnson, Eduard Jorswieck, Mérouane Debbah, Björn Ottersten, “Multi-Objective Signal Processing Optimization: The Way to Balance Conflicting Metrics in 5G Systems”, IEEE Signal Processing Magazine
(Special Issue on Signal Processing for the 5G Revolution), vol. 31, no. 6, pp. 14-23, November 2014.
[A1] Emil Björnson, Mats Bengtsson, Björn Ottersten, “Optimal Multi-User Transmit Beamforming: A Difficult Problem with a Simple Solution Structure,” IEEE Signal Processing Magazine, vol. 31, no. 4, pp. 142-148,
July 2014.
Journal Articles
Emil Björnson, Erik G. Larsson, Mérouane Debbah, “Massive MIMO for Maximal Spectral Efficiency: How
Many Users and Pilots Should Be Allocated?,” IEEE Transactions on Wireless Communications, Submitted
for publication.
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Emil Björnson, Michail Matthaiou, Mérouane Debbah, “Massive MIMO with Arbitrary Non-Ideal Arrays:
Hardware Scaling Laws and Circuit-Aware Design,” IEEE Transactions on Wireless Communications, Submitted for publication.
Axel Müller, Romain Couillet, Emil Björnson, Sebastian Wagner, Mérouane Debbah, “Interference-Aware
RZF Precoding for Multi-Cell Downlink Systems,” IEEE Transactions on Signal Processing, Submitted for
publication.
Emil Björnson, Luca Sanguinetti, Jakob Hoydis, Mérouane Debbah, “Optimal Design of Energy-Efficient
Multi-User MIMO Systems: Is Massive MIMO the Answer?,” IEEE Transactions on Wireless Communications, Submitted for publication.
Axel Müller, Abla Kammoun, Emil Björnson, Mérouane Debbah, “Linear Precoding Based on Polynomial
Expansion: Reducing Complexity in Massive MIMO,” IEEE Transactions on Information Theory, Submitted
for publication.
[J17] Mikko Vehkaperä, Taneli Riihonen, Maksym Girnyk, Emil Björnson, Mérouane Debbah, Lars K.
Rasmussen, Risto Wichman, “Asymptotic Analysis of MIMO Channels With Transmitter Noise and Mismatched
Decoding,” IEEE Transactions on Communications, To appear.
[J16] Luca Sanguinetti, Aris L. Moustakas, Emil Björnson, Mérouane Debbah “Large System Analysis of the
Energy Consumption Distribution in Multi-User MIMO Systems with Mobility,” IEEE Transactions on Wireless
Communications, To appear.
[J15] Emil Björnson, Jakob Hoydis, Marios Kountouris, and Mérouane Debbah, “Massive MIMO Systems
with Non-Ideal Hardware: Energy Efficiency, Estimation, and Capacity Limits,” IEEE Transactions on Information Theory, vol. 60, no. 11, pp. 7112-7139, November 2014.
[J14] Abla Kammoun, Axel Müller, Emil Björnson, Mérouane Debbah, “Linear Precoding Based on Polynomial Expansion: Large-Scale Multi-Cell MIMO Systems,” IEEE Journal of Selected Topics in Signal Processing, vol. 8, no. 5, pp. 861-875, October 2014.
[J13] Nafiseh Shariati, Emil Björnson, Mats Bengtsson, Mérouane Debbah, “Low-Complexity Polynomial
Channel Estimation in Large-Scale MIMO with Arbitrary Statistics,” IEEE Journal of Selected Topics in Signal
Processing, vol. 8, no. 5, pp. 815-830, October 2014.
[J12] Emil Björnson, Michail Matthaiou, Mérouane Debbah, “A New Look at Dual-Hop Relaying: Performance Limits with Hardware Impairments,” IEEE Transactions on Communications, vol. 61, no. 11, pp. 45124525, November 2013.
[J11] Dimitrios Katselis, Cristian Rojas, Mats Bengtsson, Emil Björnson, Xavier Bombois, Nafiseh Shariati, Magnus Jansson, Håkan Hjalmarsson, “Training sequence design for MIMO channels: an application-oriented
approach,” EURASIP Journal on Wireless Communications and Networking, 2013:245, 2013.
[J10] Emil Björnson, Marios Kountouris, Mats Bengtsson, Björn Ottersten, “Receive Combining vs. MultiStream Multiplexing in Downlink Systems with Multi-Antenna Users,” IEEE Transactions on Signal Processing,
vol. 61, no. 13, pp. 3431-3446, July 2013.
[J9] Michail Matthaiou, Agisilaos Papadogiannis, Emil Björnson, and Mérouane Debbah, “Two-way Relaying under the Presence of Relay Transceiver Hardware Impairments,” IEEE Communications Letters, vol. 17, no.
6, pp. 1136-1139, June 2013.
[J8] Emil Björnson, Per Zetterberg, Mats Bengtsson, Björn Ottersten, “Capacity Limits and Multiplexing
Gains of MIMO Channels with Transceiver Impairments,” IEEE Communications Letters, vol. 17, no. 1, pp.
91-94, January 2013.
[J7] Emil Björnson, Mats Bengtsson, Björn Ottersten, “Pareto Characterization of the Multicell MIMO Performance Region With Simple Receivers,” IEEE Transactions on Signal Processing, vol. 60, no. 8, pp. 4464-4469,
August 2012.
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[J6] Emil Björnson, Gan Zheng, Mats Bengtsson, Björn Ottersten, “Robust Monotonic Optimization Framework for Multicell MISO Systems,” IEEE Transactions on Signal Processing, vol. 60, no. 5, pp. 2508-2523,
May 2012. Runner-Up for IEEE Sweden VT-COM-IT Joint Chapter Best Student Journal Paper
Award
[J5] Emil Björnson, Niklas Jaldén, Mats Bengtsson, Björn Ottersten, “Optimality Properties, Distributed
Strategies, and Measurement-Based Evaluation of Coordinated Multicell OFDMA Transmission” IEEE Transactions on Signal Processing, vol. 59, no. 12, pp. 6086-6101, December 2011.
[J4] Emil Björnson, Eduard Jorswieck, Björn Ottersten, “Impact of Spatial Correlation and Precoding Design in
OSTBC MIMO Systems,” IEEE Transactions on Wireless Communications, vol. 9, no. 11, pp. 3578-3589,
November 2010.
[J3] Emil Björnson, Randa Zakhour, David Gesbert, Björn Ottersten, “Cooperative Multicell Precoding: Rate
Region Characterization and Distributed Strategies with Instantaneous and Statistical CSI,” IEEE Transactions on
Signal Processing, vol. 58, no. 8, pp. 4298-4310, August 2010.
[J2] Emil Björnson, Björn Ottersten, “A Framework for Training-Based Estimation in Arbitrarily Correlated Rician MIMO Channels with Rician Disturbance,” IEEE Transactions on Signal Processing, vol. 58, no. 3, pp.
1807-1820, March 2010.
[J1] Emil Björnson, David Hammarwall, Björn Ottersten, “Exploiting Quantized Channel Norm Feedback
through Conditional Statistics in Arbitrarily Correlated MIMO Systems,” IEEE Transactions on Signal Processing, vol. 57, no. 10, pp. 4027-4041, October 2009.
Conference Papers
[C37] Luca Sanguinetti, Emil Björnson, Mérouane Debbah, Aris L. Moustakas, “Optimal Linear Precoding
in Multi-User MIMO Systems: A Large System Analysis,” Proceedings of IEEE Global Communications
Conference (GLOBECOM), Austin, Texas, USA, December 2014.
[C36] Emil Björnson, Erik G. Larsson, Mérouane Debbah, “Optimizing Multi-Cell Massive MIMO for Spectral Efficiency: How Many Users Should Be Scheduled?,” Proceedings of IEEE Global Conference on Signal
and Information Processing (GlobalSIP), Atlanta, Georgia, December 2014.
[C35] Abla Kammoun, Axel Müller, Emil Björnson, Mérouane Debbah, “Low-Complexity Linear Precoding
for Multi-Cell Massive MIMO Systems,” Proceedings of European Signal Processing Conference (EUSIPCO), Lisbon, Portugal, September 2014.
[C34] Xinlin Zhang, Michail Matthaiou, Mikael Coldrey, Emil Björnson, “Energy Efficiency Optimization in
Hardware-Constrained Large-Scale MIMO Systems,” Proceedings of International Symposium on Wireless
Communication Systems (ISWCS), Barcelona, Spain, August 2014.
[C33] Axel Müller, Abla Kammoun, Emil Björnson, Mérouane Debbah, “Efficient Linear Precoding for Massive MIMO Systems using Truncated Polynomial Expansion,” Proceedings of IEEE Sensor Array and Multichannel Signal Processing Workshop (SAM), A Coruña, Spain, June 2014. Best Student Paper Award,
Second Price.
[C32] Xinlin Zhang, Michail Matthaiou, Emil Björnson, Mikael Coldrey, and Mérouane Debbah, “On the
MIMO Capacity with Residual Transceiver Hardware Impairments,” Proceedings of IEEE International Conference on Communications (ICC), Sydney, Australia, June 2014.
[C31] Xinlin Zhang, Michail Matthaiou, Mikael Coldrey, Emil Björnson, “Impact of Residual Transmit RF
Impairments on Training-Based MIMO Systems,” Proceedings of IEEE International Conference on Communications (ICC), Sydney, Australia, June 2014.
[C30] Emil Björnson, Michail Matthaiou, Mérouane Debbah, “Circuit-Aware Design of Energy-Efficient Massive MIMO Systems,” Proceedings of International Symposium on Communications, Control, and Signal
Processing (ISCCSP), Athens, Greece, May 2014.
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[C29] Emil Björnson, Michail Matthaiou, Mérouane Debbah, “Massive MIMO Systems with Hardware-Constrained Base Stations,” Proceedings of IEEE Conference on Acoustics, Speech, and Signal Processing
(ICASSP), Florence, Italy, May 2014.
[C28] Luca Sanguinetti, Aris Moustakas, Emil Björnson, Mérouane Debbah, “Energy Consumption in multiuser MIMO systems: Impact of user mobility,” Proceedings of IEEE Conference on Acoustics, Speech, and
Signal Processing (ICASSP), Florence, Italy, May 2014.
[C27] Rasmus Brandt, Emil Björnson, Mats Bengtsson, “Weighted Sum Rate Optimization for Multicell MIMO
Systems with Hardware-Impaired Transceivers,” Proceedings of IEEE Conference on Acoustics, Speech, and
Signal Processing (ICASSP), Florence, Italy, May 2014.
[C26] Emil Björnson, Luca Sanguinetti, Jakob Hoydis, Mérouane Debbah, “Designing Multi-User MIMO
for Energy Efficiency: When is Massive MIMO the Answer?,” Proceedings of IEEE Wireless Communications
and Networking Conference (WCNC), Istanbul, Turkey, April 2014. Best Paper Award.
[C25] Serveh Shalmashi, Emil Björnson, Slimane Ben Slimane, Mérouane Debbah, “Closed-Form Optimality Characterization of Network-Assisted Device-to-Device Communications,” Proceedings of IEEE Wireless
Communications and Networking Conference (WCNC), Istanbul, Turkey, April 2014.
[C24] Axel Müller, Emil Björnson, Romain Couillet, Mérouane Debbah, “Analysis and Management of Heterogeneous User Mobility in Large-Scale Downlink Systems,” Proceedings of Asilomar Conference on Signals,
Systems, and Computers, Pacific Grove, California, USA, November 2013.
[C23] Nafiseh Shariati, Emil Björnson, Mats Bengtsson, Mérouane Debbah, “Low-Complexity Channel Estimation in Large-Scale MIMO using Polynomial Expansion,” Proceedings of IEEE Symposium on Personal,
Indoor, Mobile and Radio Communications (PIMRC), London, UK, September 2013.
[C22] Emil Björnson, Jakob Hoydis, Marios Kountouris, and Mérouane Debbah, “Hardware Impairments
in Large-scale MISO Systems: Energy Efficiency, Estimation, and Capacity Limits,” Proceedings of International
Conference on Digital Signal Processing (DSP), Santorini, Greece, July 2013.
[C21] Emil Björnson, Agisilaos Papadogiannis, Michail Matthaiou, Mérouane Debbah, “On the Impact of
Transceiver Impairments on Relaying,” Proceedings of IEEE Conference on Acoustics, Speech, and Signal
Processing (ICASSP), pp. 4948-4952, Vancouver, Canada, May 2013.
[C20] John Flåm, Emil Björnson, Saikat Chatterjee, “Pilot Design for MIMO Channel Estimation: An Alternative to the Kronecker Structure Assumption” Proceedings of IEEE Conference on Acoustics, Speech, and
Signal Processing (ICASSP), pp. 5061-5064, Vancouver, Canada, May 2013.
[C19] Emil Björnson, Marios Kountouris, Mérouane Debbah, “Massive MIMO and Small Cells: Improving
Energy Efficiency by Optimal Soft-Cell Coordination,” Proceedings of International Conference on Telecommunications (ICT), Casablanca, Morocco, May 2013.
[C18] Emil Björnson, Per Zetterberg, Mats Bengtsson, “Optimal Coordinated Beamforming in the Multicell
Downlink with Transceiver Impairments,” Proceedings of IEEE Global Communications Conference (GLOBECOM), Anaheim, California, USA, December 2012.
[C17] Emil Björnson, Mats Bengtsson, Gan Zheng, Björn Ottersten, “Computational Framework for Optimal
Robust Beamforming in Coordinated Multicell Systems,” Proceedings of International Workshop on Computational Advances in Multi-Sensor Adaptive Processing (CAMSAP), San Juan, Puerto Rico, December
2011. Best Student Paper Award.
[C16] Emil Björnson, Mats Bengtsson, Björn Ottersten, “Receive Combining vs. Multistream Multiplexing in
Multiuser MIMO Systems,” Proceedings of IEEE Swedish Communication Technologies Workshop (SweCTW), Stockholm, Sweden, October 2011.
[C15] Xueying Hou, Emil Björnson, Chenyang Yang, Mats Bengtsson, “Cell-Grouping Based Distributed
Beamforming and Scheduling for Multi-cell Cooperative Transmission,” Proceedings of IEEE Symposium on Personal, Indoor, Mobile and Radio Communications (PIMRC), Toronto, Canada, September 2011.
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[C14] Jinghong Yang, Emil Björnson, Mats Bengtsson, “Receive Beamforming Design Based on a Multiple-state
Interference Model,” Proceedings of IEEE International Conference on Communications (ICC), Kyoto,
Japan, June 2011.
[C13] Emil Björnson, Konstantinos Ntontin, Björn Ottersten, “Channel Quantization Design in Multiuser
MIMO Systems: Asymptotic versus Practical Conclusions,” Proceedings of IEEE International Conference on
Acoustics, Speech, and Signal Processing (ICASSP), Prague, Czech Republic, May 2011.
[C12] Emil Björnson, Mats Bengtsson, Björn Ottersten, “Optimality Properties and Low-Complexity Solutions to Coordinated Multicell Transmission,” Proceedings of IEEE Global Communications Conference
(GLOBECOM), Miami, Florida, USA, December 2010.
[C11] Petri Komulainen, Antti Tölli, Bin Song, Florian Roemer, Emil Björnson, Mats Bengtsson, “CSI
Acquisition Concepts for Advanced Antenna Schemes in the WINNER+ Project,” Future Network and MobileSummit 2010 Conference Proceedings, Florence, Italy, June 2010.
[C10] Emil Björnson, Randa Zakhour, David Gesbert, Björn Ottersten, “Distributed Multicell and Multiantenna Precoding: Characterization and Performance Evaluation,” Proceedings of IEEE Global Communications
Conference (GLOBECOM), Honolulu, Hawaii, USA, December 2009.
[C9] Emil Björnson, Björn Ottersten, “On the Principles of Multicell Precoding with Centralized and Distributed
Cooperation,” Proceedings of International Conference on Wireless Communications and Signal Processing (WCSP), Nanjing, China, November 2009. Best Paper Award.
[C8] Emil Björnson, Björn Ottersten, “Training-Based Bayesian MIMO Channel and Channel Norm Estimation,” Proceedings of IEEE International Conference on Acoustics, Speech, and Signal Processing
(ICASSP), Taipei, Taiwan, April 2009.
[C7] Emil Björnson, Björn Ottersten, Eduard Jorswieck, “On the Impact of Spatial Correlation and Precoder
Design on the Performance of MIMO Systems with Space-Time Coding,” Proceedings of IEEE International
Conference on Acoustics, Speech, and Signal Processing (ICASSP), Taipei, Taiwan, April 2009.
[C6] Emil Björnson, Björn Ottersten, “Post-User-Selection Quantization and Estimation of Correlated Frobenius
and Spectral Channel Norms,” Proceedings of IEEE International Symposium on Personal, Indoor and
Mobile Radio Communications (PIMRC), Cannes, France, September 2008.
[C5] Emil Björnson, Pandu Devarakota, Samer Medawar, Eduard Jorswieck, “Schur-convexity of the Symbol
Error Rate in Correlated MIMO Systems with Precoding and Space-time Coding,” Proceedings of Nordic Conference on Radio Science and Communications (RVK), Växjö, Sweden, June 2008.
[C4] Emil Björnson, Björn Ottersten, “Pilot-based Bayesian Channel Norm Estimation in Rayleigh Fading Multiantenna Systems,” Proceedings of Nordic Conference on Radio Science and Communications (RVK),
Växjö, Sweden, June 2008.
[C3] Emil Björnson, David Hammarwall, Randa Zakhour, Mats Bengtsson, David Gesbert, Björn Ottersten, “Feedback design in multiuser MIMO systems using quantization splitting and hybrid instantaneous/statistical
channel information,” Proceedings of ICT Mobile and Wireless Communications Summit (ICT-MobileSummit), Stockholm, Sweden, June 2008.
[C2] Emil Björnson, Björn Ottersten, “Exploiting Long-term Statistics in Spatially Correlated Multi-user MIMO
Systems with Quantized Channel Norm Feedback,” Proceedings of IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP), Las Vegas, Nevada, USA, April 2008.
[C1] Emil Björnson, David Hammarwall, Björn Ottersten, “Beamforming Utilizing Channel Norm Feedback
in Multiuser MIMO Systems,” Proceedings of IEEE Workshop on Signal Processing Advances in Wireless
Communications (SPAWC), Helsinki, Finland, June 2007.
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Theses
[T2] Emil Björnson, “Multiantenna Cellular Communications: Channel Estimation, Feedback, and Resource Allocation,” Doctoral Thesis in Telecommunications, ACCESS Linnaues Centre, Signal Processing Laboratory,
KTH Royal Institute of Technology, November 2011.
[T1] Emil Björnson, “Beamforming Utilizing Channel Norm Feedback in Multiuser MIMO Systems,” Master of
Science Thesis, Department of Electroscience, Lund University, January 2007.
Last update: December 23, 2014
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