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Department of Communication Systems

The department conducts education and research in the communication systems area in its widest sense. This includes, but is not limited to: technical and sustainability aspects of wireless and wired communication systems, as well as services such as high-speed data transfer, internet-of-things, sensing, localization, satellite networks, and intelligence at the edge. The technology focus lies on the antenna, physical, and medium access and control (MAC) layers as well as on implementation aspects across all layers.

Meet the department

News

Emil Björnson är högt rankad forskare enligt ScholarGPS och Clarivate

COS professor is now Sweden's highest-ranking researcher

ScholarGPS has released its annual ranking of the world's researchers. It shows that Professor Emil Björnson at COS has reached first place in Sweden, in all scientific fields, based on research resul...

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Zinat and Nuria
Zinat Behdad (left) and Núria Flores-Espinosa (right)

Two COS Researchers Win Best Student Paper Awards

In October 2025, two PhD students at COS, Zinat Behdad and Núria Flores-Espinosa, won best student paper awards in two different conferences: IEEE Sweden Joint VT-COM-IT Workshop, and ISAP 2025.

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Vitaly Petrov is appointed docent

Vitaly Petrov is appointed docent in communication systems

His docent lecture covered wireless communications in sub-THz and THz bands

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Calendar

Recent publications

[1]
S. Quaresima et al., "Monolithic Integration of a Dual-Mode On-Chip Antenna with a Ferroelectric Hafnium Zirconium Oxide Varactor for Reprogrammable Radio-Frequency Front Ends †," Electronics, vol. 15, no. 4, 2026.
[2]
B. Ning et al., "Precoding Matrix Indicator in the 5G NR Protocol : A Tutorial on 3GPP Beamforming Codebooks," IEEE Communications Surveys and Tutorials, vol. 28, pp. 4581-4623, 2026.
[3]
M. Z. Chen et al., "Wideband Quasi-Nondiffracting Radial GRIN Lenses," IEEE Transactions on Antennas and Propagation, vol. 74, no. 4, pp. 3546-3558, 2026.
[4]
Z. Wang et al., "Flexible MIMO for Future Wireless Communications: Which Flexibilities Are Possible?," IEEE wireless communications, vol. 33, no. 1, pp. 181-190, 2026.
[5]
J. Lundgren, O. Zetterström and O. Quevedo-Teruel, "A Compact Bowl-Shaped Ring-Loaded Antenna Designed Using Characteristic Mode Analysis for Multiband Base Stations," IEEE Transactions on Antennas and Propagation, vol. 74, no. 3, pp. 2250-2262, 2026.
Full list in the KTH publications portal