Large portions of spectrum in the millimeter-wave bands (mmWave, 30 GHz – 300 GHz) have been recently harnessed by the fifth generation (5G) wireless networks, thus facilitating high-rate data exchange. At the same time, severe challenges are introduced due to the possible blockage of the mmWave signal by various objects in the environment such as human bodies, vehicles, and lampposts, which can cause large attenuation losses.
To exploit the full potential of mmWave communications, it is essential to design a wireless system that is reliable. That requires a thorough understanding of the signal blockage effect at mmWave frequencies, which is one of the major factors limiting the reliability of mmWave links. According to Margarita Gapeyenko, appropriate models need to be developed to account for blockage, and consequently, new techniques need to be introduced and evaluated, aiming to mitigate the harmful effect of blockage in mmWave communications.
Margarita Gapeyenko starts her dissertation with a discussion on mmWave communications, highlighting the problem of blockage by various objects.
“I also introduce novel models to account for small-scale and large-scale blockage of line-of-sight and multipath components. Finally, several blockage mitigation techniques are discussed and evaluated with the developed mathematical framework,” she explains.
The research has been documented in eight main publications: five journal articles and three conference papers. The venues include IEEE Journal on Selected Areas in Communications (JSAC), IEEE Transactions on Wireless Communications (TWC), and IEEE Transactions on Vehicular Technology (TVT).
The doctoral dissertation of MSc. Margarita Gapeyenko in the field of communications engineering titled System-Level Analysis of Blockage Dynamics in Millimeter-Wave Communications will be publicly examined in the Faculty of Information Technology and Communication Sciences at Tampere University at 12.00 on Tuesday 31st May 2022. The Opponent will be Professor Petar Popovski from Aalborg University, Denmark. The Custos will be Associate Professor Sergey Andreev from the Faculty of Information Technology and Communication Sciences at Tampere University. The co-supervisor is Dr. Dmitri Moltchanov from the Faculty of Information Technology and Communication Sciences at Tampere University.
Public defence is organized via digital platform at Tampere University: link to the event
The dissertation is available online at https://trepo.tuni.fi/handle/10024/140139.
The Faculty Office will provide a pdf version of the entire doctoral dissertation upon request. Please send an email to cee.doc.tau [at] tuni.fi