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In single-zone multi-node systems (SZMRSs), temperature controls rely on a single probe near the thermostat, resulting in temperature discrepancies that cause thermal discomfort and energy waste. Augmenting smart thermostats (STs) with…

信号处理 · 电气工程与系统科学 2024-11-11 Ozan Baris Mulayim , Edson Severnini , Mario Bergés

Numerical simulation is a powerful tool for assessing the causes of an Urban Heat Island (UHI) effect or quantifying the impact of mitigation solutions on outdoor and indoor thermal comfort. For that purpose, several models have been…

计算工程、金融与科学 · 计算机科学 2025-04-03 Marie-Hélène Azam , Julien Berger , Edouard Walther , Sihem Guernouti

The fundamental intelligent reflecting surface (IRS) deployment problem is investigated for IRS-assisted networks, where one IRS is arranged to be deployed in a specific region for assisting the communication between an access point (AP)…

信号处理 · 电气工程与系统科学 2021-10-07 Xidong Mu , Yuanwei Liu , Li Guo , Jiaru Lin , Robert Schober

The \emph{in situ} estimation of the thermal properties of existing building wall materials is a computationally expensive procedure. Its cost is highly proportional to the duration of measurements. To decrease the computational cost a…

计算工程、金融与科学 · 计算机科学 2021-11-18 Ainagul Jumabekova , Julien Berger , Aurélie Foucquier , George S. Dulikravich

Intelligent Reflecting Surface (IRS) technology is revolutionizing wireless communications by shifting from channel adaptation to a responsive wireless environment. This paper introduces a multi-IRS assisted millimeter wave (mm-wave)…

信号处理 · 电气工程与系统科学 2024-01-04 Alireza Qazavi Khorasgani , Foroogh S. Tabataba , Mehdi Naderi Soorki , Mohammad Sadegh Fazel

Intelligent reflecting surfaces (IRSs) are regarded as key enablers of next-generation wireless communications, due to their capability of customizing the wireless propagation environment. In this paper, we investigate power-efficient…

信息论 · 计算机科学 2020-05-15 Xianghao Yu , Dongfang Xu , Derrick Wing Kwan Ng , Robert Schober

Reconfigurable Intelligent Surface (RIS) has becoming a useful tool in future wireless communication systems for close-distance communication network. This paper we use Reconfigurable Intelligent Surface (RIS) for downlink multi-user…

信息论 · 计算机科学 2021-02-02 RuiTianYi Lu

This work addresses the issue of energy efficiency maximization in a multi-user network aided by reconfigurable intelligent surface (RIS) with global reflection capabilities. Two optimization methods are proposed to optimize the mobile…

信号处理 · 电气工程与系统科学 2023-03-07 Robert K. Fotock , Alessio Zappone , Marco Di Renzo

Reconfigurable intelligent surfaces (RISs) represent a radical new technology that can shape the radio wave propagation in wireless communication systems and offers a great variety of possible performance and implementation gains. Motivated…

信息论 · 计算机科学 2021-09-06 Nemanja Stefan Perović , Le-Nam Tran , Marco Di Renzo , Mark F. Flanagan

In this paper, we focus on the sum-rate optimization in a multi-user millimeter-wave (mmWave) system with distributed intelligent reflecting surfaces (D-IRSs), where a base station (BS) communicates with users via multiple IRSs. The BS…

信号处理 · 电气工程与系统科学 2021-01-22 Yue Xiu , Wei Sun , Jiao Wu , Guan Gui , Ning Wei , Zhongpei Zhang

This paper explores the idea of using redirective reconfigurable intelligent surfaces (RedRIS) to overcome many of the challenges associated with the conventional reflective RIS. We develop a framework for jointly optimizing the switching…

信息论 · 计算机科学 2024-06-04 Bamelak Tadele , Faouzi Bellili , Amine Mezghani , Md Jawwad Chowdhury , Haseeb Ur Rehman

It is well known that thermal insulation is a leading strategy for reducing energy consumption associated to heating or cooling processes in buildings. Nevertheless, building insulation can generate high expenditures so that the selection…

计算工程、金融与科学 · 计算机科学 2020-02-20 Suelen Gasparin , Julien Berger , Denys Dutykh , Nathan Mendes

In this paper, a comprehensive performance analysis of a distributed intelligent reflective surfaces (IRSs)-aided communication system is presented. First, the optimal signal-to-noise ratio (SNR), which is attainable through the direct and…

The fundamental performance metrics of an intelligent reflective surface (IRS)-aided wireless system are presented. By optimizing the IRS phase-shift matrix, the received signal-to-noise ratio (SNR) is maximized at the destination in the…

信号处理 · 电气工程与系统科学 2020-10-26 Dulaj Gunasinghe , Dhanushka Kudathanthirige , Gayan Amarasuriya Aruma Baduge

Intelligent reflecting surface (IRS) is envisioned as a revolutionary technology for future wireless communication systems since it can intelligently change radio environment and integrate it into wireless communication optimization.…

信号处理 · 电气工程与系统科学 2021-01-05 Hongyu Li , Wenhao Cai , Yang Liu , Ming Li , Qian Liu , Qingqing Wu

The reconfigurable intelligent surface is a promising technology for the manipulation and control of wireless electromagnetic signals. In particular, it has the potential to provide significant performance improvements for wireless…

信号处理 · 电气工程与系统科学 2022-09-14 Hamidreza Taghvaee , Akshay Jain , Sergi Abadal , Gabriele Gradoni , Eduard Alarcón , Albert Cabellos-Aparicio

Reconfigurable intelligent surface (RIS) is a type of wireless communication technology that uses a reconfigurable surface, such as a wall or building that is able to adjust its properties by an integrated optimization algorithm in order to…

应用物理 · 物理学 2023-09-25 Emanuel Colella , Luca Bastianelli , Franco Moglie , Valter Mariani Primiani

In this paper, the problem of robust reconfigurable intelligent surface (RIS) system design under changes in data distributions is investigated. Using the notion of invariant risk minimization (IRM), an invariant causal representation…

机器学习 · 计算机科学 2021-05-06 Sumudu Samarakoon , Jihong Park , Mehdi Bennis

This paper investigates the problem of resource allocation for a wireless communication network with distributed reconfigurable intelligent surfaces (RISs). In this network, multiple RISs are spatially distributed to serve wireless users…

信号处理 · 电气工程与系统科学 2020-05-04 Zhaohui Yang , Mingzhe Chen , Walid Saad , Wei Xu , Mohammad Shikh-Bahaei , H. Vincent Poor , Shuguang Cui

Intelligent reflecting surface (IRS) is a promising new technology for achieving both spectrum and energy efficient wireless communication systems in the future. However, existing works on IRS mainly consider frequency-flat channels and…

信息论 · 计算机科学 2019-11-25 Yifei Yang , Beixiong Zheng , Shuowen Zhang , Rui Zhang