no code implementations • 20 May 2024 • Islam M. Tanash, Risto Wichman
This paper proposes a three-dimensional (3D) satellite-terrestrial communication network assisted with reconfigurable intelligent surfaces (RISs).
no code implementations • 12 Jan 2024 • Robin Rajamäki, Risto Wichman
This paper studies the role of the joint transmit-receive antenna array geometry in shaping the self-interference (SI) channel in full-duplex communications.
no code implementations • 21 Sep 2023 • M. Ertug Pihtili, Mehmet C. Ilter, Ertugrul Basar, Risto Wichman, Jyri Hämäläinen
IH leverages existing WPT mechanisms for data communication by incorporating index modulation (IM) techniques on top of the existing far-field power transfer mechanism.
no code implementations • 20 Jan 2021 • Mehmet C. Ilter, Alexis A. Dowhuszko, Jyri Hämäläinen, Risto Wichman
Visible Light Communication~(VLC) systems provide not only illumination and data communication, but also indoor monitoring services if the effect that different events create on the received optical signal is properly tracked.
no code implementations • 28 Apr 2020 • Niloofar Okati, Taneli Riihonen, Dani Korpi, Ilari Angervuori, Risto Wichman
As low Earth orbit (LEO) satellite communication systems are gaining increasing popularity, new theoretical methodologies are required to investigate such networks' performance at large.