Tootfinder

Millions of small coffee growers vs. central monitoring from 7000 km away: a classic #commons governance story?
https://www.theguardian.com/global-de…

Electromagnetically-Consistent Modeling and Optimization of Mutual Coupling in RIS-Assisted Multi-User MIMO Communication Systems
Dilki Wijekoon, Amine Mezghani, George C. Alexandropoulos, Ekram Hossain
https://arxiv.org/abs/2404.04539

Electromagnetically-Consistent Modeling and Optimization of Mutual Coupling in RIS-Assisted Multi-User MIMO Communication Systems
Mutual Coupling (MC) is an unavoidable feature in Reconfigurable Intelligent Surfaces (RISs) with sub-wavelength inter-element spacing. Its inherent presence naturally leads to non-local RIS structures, which can be efficiently described via non-diagonal phase shift matrices. In this paper, we focus on optimizing MC in RIS-assisted multi-user MIMO wireless communication systems. We particularly formulate a novel problem to jointly optimize active and passive beamforming as well as MC in a physi…

A top Biden aide highlights a coming showdown with GOP over 2017 tax cuts that are due to expire (Josh Boak/Associated Press)
https://apnews.com/article/biden-trump-tax-taxes-brainard-8380c835515aa1f855be6e665d530bed
http://www.memeorandum.com/240510/p16#a240510p16

This https://arxiv.org/abs/2202.00552 has been replaced.
link: https://scholar.google.com/scholar?q=a

Intelligent Reflecting Surface Assisted Integrated Sensing and Communications for mmWave Channels
This paper proposes an intelligent reflecting surface (IRS) assisted integrated sensing and communication (ISAC) system operating at the millimeter-wave (mmWave) band. Specifically, the ISAC system combines communication and radar operations and performs, detecting and communicating simultaneously with multiple targets and users. The IRS dynamically controls the amplitude or phase of the radio signal via reflecting elements to reconfigure the radio propagation environment and enhance the transm…

Because I love documenting Philippine historical markers, my simple way to honor #InternationalWomensDay today is to share these photos of 3 markers that commemorate the Asociación Feminista Filipina, the first women’s organization in the #Philippines 🇵🇭 that was founded by Concepcion Fel…

File:Asociacion Feminista Filipina site historical marker in Santa Cruz 2.jpg - Wikimedia Commons

« Un très mauvais signal », « un crime » : les sénateurs très remontés contre les 900 millions d’euros d’économies dans la recherche et le supérieur - Public Sénat
https://www.…

« Un très mauvais signal », « un crime » : les sénateurs très remontés contre les 900 millions d’euros d’économies dans la recherche et le supérieur - Public Sénat
Sur les 10 milliards d’euros d’économies, la recherche et l’enseignement supérieur sont mis à contribution pour près d’un milliard. Une saignée dénoncée par les sénateurs de la commission de la culture et de l’éducation. « Cette coupe budgétaire rentre en totale contradiction avec la loi de programmation de la recherche », dénonce Laurent Lafon, président de la commission. Le ministère évoque des « ajustements sur les appels à projets de l’Agence nationale de r…

This https://arxiv.org/abs/2402.09441 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_ees…

Deep-Learning Channel Estimation for IRS-Assisted Integrated Sensing and Communication System
Integrated sensing and communication (ISAC), and intelligent reflecting surface (IRS) are envisioned as revolutionary technologies to enhance spectral and energy efficiencies for next wireless system generations. For the first time, this paper focuses on the channel estimation problem in an IRS-assisted ISAC system. This problem is challenging due to the lack of signal processing capacity in passive IRS, as well as the presence of mutual interference between sensing and communication (SAC) sign…

This https://arxiv.org/abs/2402.09440 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_ees…

Extreme Learning Machine-based Channel Estimation in IRS-Assisted Multi-User ISAC System
Multi-user integrated sensing and communication (ISAC) assisted by intelligent reflecting surface (IRS) has been recently investigated to provide a high spectral and energy efficiency transmission. This paper proposes a practical channel estimation approach for the first time to an IRS-assisted multiuser ISAC system. The estimation problem in such a system is challenging since the sensing and communication (SAC) signals interfere with each other, and the passive IRS lacks signal processing abil…

This https://arxiv.org/abs/2402.16415 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_csIT_…

Achievable Rate Optimization for Stacked Intelligent Metasurface-Assisted Holographic MIMO Communications
Stacked intelligent metasurfaces (SIM) is a revolutionary technology, which can outperform its single-layer counterparts by performing advanced signal processing relying on wave propagation. In this work, we exploit SIM to enable transmit precoding and receiver combining in holographic multiple-input multiple-output (HMIMO) communications, and we study the achievable rate by formulating a joint optimization problem of the SIM phase shifts at both sides of the transceiver and the covariance matr…

This https://arxiv.org/abs/2402.09439 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_ees…

Deep-Learning-Based Channel Estimation for IRS-Assisted ISAC System
Integrated sensing and communication (ISAC) and intelligent reflecting surface (IRS) are viewed as promising technologies for future generations of wireless networks. This paper investigates the channel estimation problem in an IRS-assisted ISAC system. A deep-learning framework is proposed to estimate the sensing and communication (S&C) channels in such a system. Considering different propagation environments of the S&C channels, two deep neural network (DNN) architectures are designed to real…