Francisco J. Escribano’s Post

The IEEE Transactions on Communications publishes manuscripts on advances in the state-of-the-art of all telecommunications including telephone, telegraphy, facsimile, and television, by electromagnetic propagation. Learn more: https://bit.ly/4gruMxo

This paper deals with scenario-aware, uncoordinated, and distributed signaling techniques in the context of feedforward opportunistic communications, that is, when the opportunistic transmitting node does not cooperate with any other node in a heterogeneous communication context. In this signaling technique, each network node individually follows a transmission strategy based on the locally sensed occupied and unused physical-layer network resources to minimize the induced interference onto other coexisting networks, taking into account the impact of the sensing errors and the locality of the sensing information. ----Gregori Vazquez More details can be found at this link: https://lnkd.in/gx5j-Jdt

What is the fastest way to share a broadcast message among a number of client devices? In #LiFi, it is faster to send that message sequentially, repeated for every individual user via a narrow beam, rather than to use a wide beam and address all receivers simultaneously. Would that work as well when you want to share a story to all you friends? At least the physics of these channels differ a lot. Evaluating these trade-offs leads to interesting design choices, as presented at a recent IEEE PIMRC conference.  Lev Azarkh, Jean-Paul Linnartz https://lnkd.in/eytw3gQG

What is the fastest way to share a broadcast message among a number of client devices? In #LiFi, it is faster to send that message sequentially, repeated for every individual user via a narrow beam, rather than to use a wide beam and address all receivers simultaneously. Would that work as well when you want to share a story to all you friends? At least the physics of these channels differ a lot. Evaluating these trade-offs leads to interesting design choices, as presented at a recent IEEE PIMRC conference.

Researchers in Germany have designed an approach to generate complex states of light that could someday make communication between multiple participants tap-proof. Read more: https://lnkd.in/eK2URJRC

In this article, the authors introduce the theoretical underpinnings of #channel #charting and present an overview of recent algorithmic developments and experimental results obtained in the field. They furthermore discuss concrete application examples of channel charting to network- and user-related applications, and they provide a perspective on future developments and challenges as well as the role of channel charting in next-generation wireless networks. ---- Paul Ferrand, Maxime Guillaud, Christoph Studer, Olav Tirkkonen More details can be found at this link: https://lnkd.in/eM2fNFqB

I have spent the last five years understanding how wireless technology would change in the future, when the user devices will be in the radiative near-field of large antenna arrays. There are important prospects to use spatial multiplexing to serve more users simultaneously, since traditional beamforming turns into finite-depth beamfocusing. Yet, I have grown to understand that much of the fundamental limits and algorithms developed for far-field MIMO are still applicable for near-field MIMO. In this new video, I dispel three misconceptions that are spreading in the related literature. Along the way, I’m explaining some of the fundamental properties that underpin the MIMO technology. The research insights presented in the video were developed in collaboration with Luca Sanguinetti, Özlem Tuğfe Demir, Parisa Ramezani, Alva Kosasih, Amna Irshad, Giacomo Bacci, and others. This presentation was prepared for the "Special Forum: Theory and Technology of 6G Near-Field Communications" at the 17th China Electronics & Information Conference, Pan Pacific Hotel, Ningbo, on April 27, 2024. Three Misconceptions in Near-Field Communications https://lnkd.in/gMB2QUBx

RIS control signaling analyzed for two generic transmission mechanisms, indicating different performance regimes and, hopefully, paving the way for more efficient RIS incorporation approaches and smarter metasurfaces.

[Book - Download the PDF for free 🤝] Introduction to Multiple Antenna Communications and Reconfigurable Surfaces Emil Björnson

Just finished the course “Satellite Internet and Communications: Fundamentals” by Ryan Hu! Check it out: https://lnkd.in/e52JhDtv #satellitecommunications #satellitenetworking.