Tootfinder

Parallax QAMA: Novel Downlink Multiple Access for MISO Systems with Simple Receivers
Jie Huang, Ming Zhao, Shengli Zhou, Ling Qiu, Jinkang Zhu
https://arxiv.org/abs/2506.23301

Parallax QAMA: Novel Downlink Multiple Access for MISO Systems with Simple Receivers
In this paper, we propose a novel downlink multiple access system with a multi-antenna transmitter and two single-antenna receivers, inspired by the underlying principles of hierarchical quadrature amplitude modulation (H-QAM) based multiple access (QAMA) and space-division multiple access (SDMA). In the proposed scheme, coded bits from two users are split and assigned to one shared symbol and two private symbols carried by different beams. Based on joint symbol mapping of H-QAM constellations …

🇺🇦 Auf radioeins läuft...
Bon Iver feat. Danielle Haim:
🎵 If Only I Could Wait
#NowPlaying #BonIver #DanielleHaim
https://open.spotify.com/track/06o2hgwnRJN0HYelhyVsLm

Joint RIS-UE Association and Beamforming Design in RIS-Assisted Cell-Free MIMO Network
Hongqin Ke, Jindan Xu, Wei Xu, Chau Yuen, Zhaohua Lu
https://arxiv.org/abs/2506.21690

Joint RIS-UE Association and Beamforming Design in RIS-Assisted Cell-Free MIMO Network
Reconfigurable intelligent surface (RIS)-assisted cell-free (CF) multiple-input multiple-output (MIMO) networks can significantly enhance system performance. However, the extensive deployment of RIS elements imposes considerable channel acquisition overhead, with the high density of nodes and antennas in RIS-assisted CF networks amplifying this challenge. To tackle this issue, in this paper, we explore integrating RIS-user equipment (UE) association into downlink RIS-assisted CF transmitter des…

Azure cost reduction/optimization for hosted applications using Artificial Intelligence. And it's REPEATABLE. Interested? Read on...
✅ Daniel Meppiel's Project Post
https://www.linkedin.com/posts/danielmeppiel_enterpriseai-ai-…

💥 What if AI could shrink your cloud bill by 80% in the time it takes to drink your coffee? | Daniel Meppiel
💥 What if AI could shrink your cloud bill by 80% in the time it takes to drink your coffee? 💥 I recently got it to happen—firsthand. What started as a quick experiment turned into something game-changing. Using VSCode's reusable prompts and the Azure MCP server, GitHub Copilot identified key optimizations for my app's infra in a predictable manner. Then, the Coding Agent implemented them. 📉 The result? An 80% smaller cloud bill. Just like that. In this 2-minute demo (linked below …

Optimizing Connectivity and Scheduling of Near/Far Field Users in Massive MIMO NOMA System
Ziad Qais Al-Abbasi
https://arxiv.org/abs/2505.23259 https://

Optimizing Connectivity and Scheduling of Near/Far Field Users in Massive MIMO NOMA System
It is envisioned that the next generations of wireless communication environment will be characterized with dense traffic demand due to the prediction that there will be large numbers of active users. Hence, it is important to find a solution to deal with such dense numbers of users. This paper investigates optimizing the connectivity and users scheduling to improve the performance of near and far field users in a downlink, multiuser, massive MIMO-NOMA system. For the considered system model, c…

Bridding OT and PaaS in Edge-to-Cloud Continuum
Carlos J Barrios (LIG, UIS, CITI), Yves Denneulin (LIG, Grenoble INP)
https://arxiv.org/abs/2506.21072 http…

Bridding OT and PaaS in Edge-to-Cloud Continuum
The Operational Technology Platform as a Service (OTPaaS) initiative provides a structured framework for the efficient management and storage of data. It ensures excellent response times while improving security, reliability, data and technology sovereignty, robustness, and energy efficiency, which are crucial for industrial transformation and data sovereignty. This paper illustrates successful deployment, adaptable application management, and various integration components catering to Edge and…

Nonlinear Power Amplifier-Resilient Cell-Free Massive MIMO: A Joint Optimization Approach
Wei Jiang, Hans D. Schotten
https://arxiv.org/abs/2506.22094 http…

Nonlinear Power Amplifier-Resilient Cell-Free Massive MIMO: A Joint Optimization Approach
This letter analyzes the effects of power amplifiers (PAs) on the downlink of cell-free massive MIMO systems. We model signal transmission incorporating nonlinear PA distortion and derive a unified spectral efficiency (SE) expression applicable to arbitrary precoding schemes. To combat PA-induced performance degradation, a joint optimization approach for user association and max-min power control is proposed. Furthermore, a low-complexity alternative is developed to approximate the joint optimi…

On the Feasibility of Distributed Phase Synchronization for Coherent Signal Superposition
Alphan Sahin
https://arxiv.org/abs/2506.22252 https://

On the Feasibility of Distributed Phase Synchronization for Coherent Signal Superposition
In this study, we analyze the feasibility of distributed phase synchronization for coherent signal superposition, a fundamental enabler for paradigms such as coherent over-the-air computation (OAC), distributed beamforming, and interference alignment, under mobility and hardware impairments. With the focus on coherent OAC, we introduce phase-coded pilots (PCPs), a strategy where the radios communicate with each other to eliminate the round-trip phase change in the uplink (UL) and downlink (DL) …

Multi-user Downlink with Reconfigurable Intelligent Metasurface Antennas (RIMSA) Array
Xuejian Wei, Hui-Ming Wang
https://arxiv.org/abs/2506.18418 https://…

Multi-user Downlink with Reconfigurable Intelligent Metasurface Antennas (RIMSA) Array
Reconfigurable Intelligent Surfaces (RIS) is a transformative technology with great potential in many applications in wireless communications and realizing the Internet of Everything at sixth generation (6G). In this study, we propose a wireless system where the RIS acts as an antenna, which we call Reconfigurable Intelligent Metasurface Antennas (RIMSA). In particular, the base station (BS) equipped with a RIMSA array performs downlink transmissions to multiple users, where each user has a sin…

Performance Analysis of Wireless Communication Systems Assisted by Fluid Reconfigurable Intelligent Surfaces
Farshad Rostami Ghadi, Kai-Kit Wong, F. Javier Lopez-Martinez, George C. Alexandropoulos, Chan-Byoung Chae
https://arxiv.org/abs/2505.23680

Performance Analysis of Wireless Communication Systems Assisted by Fluid Reconfigurable Intelligent Surfaces
This letter investigates the performance of emerging wireless communication systems assisted by a fluid reconfigurable intelligent surface (FRIS). Unlike conventional reconfigurable intelligent surfaces (RISs), an FRIS consists of fluid-inspired metamaterials arranged in a densely packed matrix of sub-elements over a surface. It dynamically activates specific elements for signal reflection and modulation based on real-time channel conditions. Considering a downlink scenario where a base station…