Tootfinder

Leverage Points: Places to Intervene in a System
https://donellameadows.org/archives/leverage-points-places-to-intervene-in-a-system/

Active IRS Assisted Joint Uplink and Downlink Communications
Qiaoyan Peng, Qingqing Wu, Guangji Chen, Wen Chen, Shaodan Ma
https://arxiv.org/abs/2510.10045 https://

Active IRS Assisted Joint Uplink and Downlink Communications
In this paper, we investigate an intelligent reflecting surface (IRS) aided wireless communication system, where active IRSs (AIRSs) are deployed to assist communication between a base station (BS) and users of both the uplink (UL) and downlink (DL). We aim to maximize the weighted sum rate (WSR) of UL and DL communications through joint optimization of BS, AIRS beamforming, and AIRS element allocation. First, we study three deployment schemes, namely distributed AIRSs, BS-side AIRS, and user-s…

A family of interaction energy minimizers supported on two intervals
Steven B. Damelin, Ruiwen Shu
https://arxiv.org/abs/2510.11662 https://arxiv.org/pdf/2…

A family of interaction energy minimizers supported on two intervals
In this paper, we consider the one-dimensional interaction energy $\frac{1}{2}\int_{\mathbb{R}}(W*ρ)(x)dρ(x) + \int_{\mathbb{R}}U(x)dρ(x)$ where the interaction potential $W(x)= -\frac{|x|^b}{b},\,1\le b \le 2$ and the external potential $U(x)=\frac{|x|^4}{4}$, and $ρ$ is a compactly supported probability measure on the real line. Our main result shows that the minimizer is supported on two intervals when $1

Remote Interference Mitigation through Null Precoding and Fractional Programming
Xuyang Sun, Hussein A. Ammar, Israfil Bahceci, Raviraj Adve, Gary Boudreau, Zehua Li
https://arxiv.org/abs/2510.09989

Remote Interference Mitigation through Null Precoding and Fractional Programming
With the rapid deployment of 5G systems, remote interference (RI) caused by atmospheric ducting has emerged as an occasional, but critical challenge. This phenomenon occurs when the downlink (DL) signals from distant base stations (BSs) propagate over long distances through tropospheric ducting, severely disrupting uplink (UL) reception at local BSs. To address this challenge, we analyze the effect of RI on network performance, including the channel estimation phase. We then develop a solution …

🇺🇦 #NowPlaying on #BBC6Music's #LaurenLaverne
Nirvana:
🎵 The Man Who Sold The World
#Nirvana
https://danielmiller23.bandcamp.com/track/nirvana-the-man-who-sold-the-world-daniel-miller-vocal-cover
https://open.spotify.com/track/15VRO9CQwMpbqUYA7e6Hwg

🇺🇦 #NowPlaying on KEXP's #MorningShow
Sugar:
🎵 Helpless
#Sugar
https://danillamas.bandcamp.com/track/helpless-sugar-cover
https://open.spotify.com/track/0NorCMxDRDt5KkaHuntrSA

By the way, in case you think this is just what "Normies" are into (people buying stuff from the online part of a brick-and-mortar business), I have run these numbers for the debian-user mailing list and they are very similar.
https://mastodon.social/@jwz/115687393402468273<…

Integrating Phase-Coherent Multistatic Imaging in Downlink D-MIMO Networks
Dario Tagliaferri, Silvia Mura, Musa Furkan Keskin, Sauradeep Dey, Henk Wymeersch
https://arxiv.org/abs/2510.04240

Integrating Phase-Coherent Multistatic Imaging in Downlink D-MIMO Networks
This paper addresses the challenge of integrating multistatic coherent imaging functionalities in the downlink (DL) of a phase-coherent distributed multiple input multiple output (D-MIMO) communication network. During DL, the D-MIMO access points (APs) jointly precode the transmitted signals to maximize the spectral efficiency (SE) at the users (UEs) locations. However, imaging requires that \textit{(i)} a fraction of the APs work as receivers for sensing and \textit{(ii)} the transmitting APs …

Performance Analysis for Multi-User Holographic MIMO Downlink with Matched Filter Precoding
Gayathri Shekar, Saman Atapattu, Prathapasinghe Dharmawansa, Kandeepan Sithamparanathan
https://arxiv.org/abs/2510.04530

Performance Analysis for Multi-User Holographic MIMO Downlink with Matched Filter Precoding
Holographic MIMO (HMIMO) has emerged as a promising solution for future wireless systems by enabling ultra-dense, spatially continuous antenna deployments. While prior studies have primarily focused on electromagnetic (EM) modeling or simulation-based performance analysis, a rigorous communication-theoretic framework remains largely unexplored. This paper presents the first analytical performance study of a multi-user HMIMO downlink system with matched filter (MF) precoding - a low-complexity b…

Doppler-Based Multistatic Drone Tracking via Cellular Downlink Signals
Chenqing Ji, Qionghui Liu, Jiahong Liu, Chao Yu, Yifei Sun, Rui Wang, Fan Liu
https://arxiv.org/abs/2509.25732

Doppler-Based Multistatic Drone Tracking via Cellular Downlink Signals
In this paper, a multistatic Doppler sensing system is proposed for the drone tracking via downlink Long-Term Evolution (LTE) signals. Specifically, the LTE base stations (BSs) are exploited as signal illuminators, and three passive sensing receivers are deployed at different locations to detect the bistatic Doppler frequencies of a target drone from received downlink signals. It is shown that even without the measurements of BS-drone-receiver range and angle, the Doppler measurements could pro…