Communication Systems (KS)

The Division of Communication Systems conducts research and education in communications engineering, statistical signal processing and network science.

Photo credit: Karl ÖfverströmA principal focus is on enabling technologies for 5G wireless networks and beyond, with Massive MIMO as the most outstanding, scalable technology component. Specific questions of concern include the design of coding, signal processing, and resource allocation algorithms, as well as implementation aspects and network topologies. Security and robustness of communication links and networks are additional topics of concern.

The division also leads research in positioning technology, with focus on cooperative localization algorithms, positioning in difficult radio environments, and positioning using antenna arrays.

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Faculty & Staff at Communication Systems

Faculty
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Resource Allocation and energy efficiency

Resource Allocation and Energy Efficiency in Wireless Networks

The demand for wireless data traffic increases exponentially. To keep up with the growth, an ambitious but necessary goal for the next generation wireless networks is to deliver 1000x higher data rates per km2 than today.
MIMO 5G

Massive MIMO - The scalable 5G technology

Massive MIMO is a leading 5G technology candidate, that aims at delivering uniformly good service to wireless terminals in high-mobility environments.
cooperative localization

Cooperative localization

A number of applications in wireless sensor networks (WSN) require sensor nodes to obtain their absolute or relative positions.
Energy-Efficient Digital Signal Processing

Energy-Efficient Digital Signal Processing

Energy efficiency in signal processing hardware is vital for several reasons, in particular to reduce the environmental impact, to increase stand-by times, to make batteries smaller and lighter, and to simplify the cooling of circuits.
Distributed jamming of Massive MIMO

Physical layer security in massive MIMO

The inherent openness of the wireless channel makes wireless communication between two legitimate parties susceptible to attacks from a third party, the adversary. These attacks can be divided into two classes: eavesdropping and jamming.
Hardware techniques for Cognitive Radio

Hardware techniques for Cognitive Radio

The Cognitive Radio (CR) is a technology which aims at improving spectrum efficiency in wireless communications by opportunistic use of the available spectrum resources.

ELLIIT

ELLIIT is a network organization for Information and Communication Technology (ICT) research at Linköping, Lund, Halmstad and Blekinge. The objective is scientific excellence in combination with industrial relevance and impact.

ELLIIT
Security Link

Security Link

A platform for strategic interdisciplinary research, within crisis management, security and infrastructure protection. The research covers sensors, telecommunication, sensor and information fusion, decision support, information security and ethics.

Security Link

News
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Wireless communication by the metre

Is there a poor mobile signal? In that case, buy a few metres of radio stripe and set it up where it´s practically invisible. Researchers at LiU and Ericsson have developed patented technology to make this possible: antennas by the metre.

Three LiU researchers appointed Wallenberg Academy Fellows

Emil Björnson, Magnus Jonsson and Marcin Szczot, have been appointed Wallenberg Academy Fellows. Five-year research grants from the Knut and Alice Wallenberg Foundation makes it possible for young researchers to make breakthroughs.

LiU researchers receive SEK 97 million from Swedish Research Council

27 researchers in natural and engineering sciences at LiU have been awarded nearly SEK 97 million for the coming four years from the Swedish Research Council. Five young researchers have received grants to build up their own research group.

Three new Wallenberg Scholars at LiU

Three professors at LiU, Anders Ynnerman, Erik G. Larsson and Igor Abrikosov, have been selected as Wallenberg Scholars in 2019, which means that they each receive SEK 18 million for free research in the coming five years.

Increase in mobile traffic requires higher energy efficiency in networks

In only a few year’s time, mobile networks will be required to transmit 100 times more data, which can give rise to a 100-fold increase in energy consumption. Emil Björnson has calculated how energy-efficient the networks can become.

LiU researchers among the most cited in the world

Four researchers from LiU claim places on the 2018 list of the most highly cited – and thus most influential – researchers in the world.

Recent highlights
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2020-02-27
Ema Becirovic successfully defended her licentiate thesis "On Massive MIMO for Massive Machine-Type Communications".
 
2020-02-25
Emil Björnson wins SSF Future Research Leader grant.
 
2020-02-13
Daniel Verenzuela successfully defended his Ph.D. thesis " Exploring Alternative Massive MIMO Designs: Superimposed Pilots and Mixed-ADCs".
 
2020-01-23
Trinh Van Chien successfully defended his Ph.D. thesis "Spatial Resource Allocation in Massive MIMO Communications: From Cellular to Cell-Free".
 
2019-12-05
Emil Björnson named Wallenberg Academy Fellow.
2019-11-11
Emil Björnson wins grant from the Swedish Research Council (VR) for research on improved spectral efficiency in wireless communications using spatial correlation and distributed antennas.
 
2019-11-11
Erik G. Larsson wins grant from the Swedish Research Council (VR) for research on adversarial attacks on machine learning for the wireless physical layer.
 
2019-04-29
Emil Björnson and Erik G. Larsson, together with Thomas Marzetta at NYU, win the 2019 IEEE ComSoc Fred W. Ellersick Prize for their paper "Massive MIMO: Ten Myths and One Critical Question".
 
2019-03-25   
Erik G. Larsson named Wallenberg Scholar.

2019-03-25   
Emil Björnson wins the 2019 EURASIP Early Career Society Award.

2019-01-07 
We welcome Özlem Tugfe Demir, new postdoc in Communication systems.
2019-01-01 
Erik G. Larsson appointed to the steering committee for the IEEE Transactions on Wireless Communications.
 
2018-12-03
Erik G. Larsson named highly cited researcher
 
2018-09-21
Giovanni Interdonato successfully defended his licentiate thesis "Signal Processing Aspects of Cell-Free Massive MIMO"
 
2018-09-14
Marcus Karlsson successfully defended his Ph.D. thesis "Blind Massive MIMO Base Stations: Downlink Transmission and Jamming"
 
2018-08-22
Telecommunications research at Linköping University ranks #23 in the world according to the Shanghai academic ranking of world universities
 
2018-05-28
Former Ph.D. student Hien Ngo wins the 2018 EURASIP Best Ph.D. Award for his dissertation "Massive MIMO: Fundamentals and System Designs" (advisor: E.G. Larsson) 

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