Search Results for author: Risto Wichman

Found 5 papers, 0 papers with code

3D Reconfigurable Intelligent Surfaces for Satellite-Terrestrial Networks

no code implementations20 May 2024 Islam M. Tanash, Risto Wichman

This paper proposes a three-dimensional (3D) satellite-terrestrial communication network assisted with reconfigurable intelligent surfaces (RISs).

On array geometry and self-interference in full-duplex massive MIMO communications

no code implementations12 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.

Index Modulation-based Information Harvesting for Far-Field RF Power Transfer

no code implementations21 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.

Visible light communication-based monitoring for indoor environments using unsupervised learning

no code implementations20 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.

Object Position

Downlink Coverage and Rate Analysis of Low Earth Orbit Satellite Constellations Using Stochastic Geometry

no code implementations28 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.

Point Processes

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