Results 91 to 100 of about 1,668 (208)

Intelligent reflecting surface-aided wideband THz communications: modeling and analysis

, 2021
In this paper, we study the performance of wideband terahertz (THz) communications assisted by an intelligent reflecting surface (IRS). Specifically, we first introduce a generalized channel model that is suitable for electrically large THz IRSs ...
Matthaiou, Michail; id_orcid, Dovelos, Konstantinos, Bellalta, Boris, Ngo, Hien Quoc; id_orcid, Ngo, Hien Quoc, Assimonis, Stylianos D., Matthaiou, Michail   +6 more
core   +1 more source

An Ultra‐Low‐Power and High‐Temperature‐Homogeneity Wafer‐Scale Infrared Source

ENERGY &ENVIRONMENTAL MATERIALS, Volume 9, Issue 4, July 2026.
A wafer‐scale MEMS infrared source with an Al@nanoforest radiation layer achieves high emissivity and temperature homogeneity at low power, enabling efficient CO2 detection for smart agriculture. Non‐dispersive infrared gas sensors, renowned for their high selectivity and high reliability, are extensively employed in applications of smart agriculture ...
Qirui Zhang, Shuxin Chen, Meng Shi, Xin Liu, Hanhui Li, Ruitao Tao, Yu Liu, Na Zhou, Wenwu Li, Haiyang Mao   +9 more
wiley   +1 more source

The Application of Intelligent Reflecting Surface in Downlink NOMA Systems

, 2020
This paper investigates the downlink communications of the intelligent reflecting surface (IRS) assisted non-orthogonal multiple access (NOMA) systems. To maximize the system capacity, we formulate an joint optimization problem to deal with the decoding ...
Zuo, Jiakuo, Yuanwei Liu, Zhijin Qin, Qin, Zhijin, Liu, Yuanwei, Chao Shen, Jiakuo Zuo, Shen, Chao   +7 more
core   +1 more source

Beyond 5G and Non‐terrestrial Network (NTN) Integrated Architecture: Access Challenges for Expanding Artificial Intelligence of Things (AIoT)

International Journal of Satellite Communications and Networking, Volume 44, Issue 4, Page 378-393, July/August 2026.
ABSTRACT This study analyzes the architecture of the beyond 5G‐NTN (Non‐terrestrial Network) integrated network and presents the technical, legal, and regulatory challenges and considerations for expanding the Artificial Intelligence of Things (AIoT) ecosystem.
Byung Woon Kim, Ga Eun Choi
wiley   +1 more source

Intelligent Reflecting Surface OFDM Communication with Deep Neural Prior

, 2022
An Intelligent Reflecting Surface (IRS) is an emerging technology for improving the data rate over wireless channels by controlling the underlying channel.
Björnson, Emil,, Moshe, Yair,, Cohen, Israel,, Gal Metzer, Emil Bjornson, Israel Cohen, Fireaizen, Tomer,, Yair Moshe, Ben-David, Dan,, Dan Ben-David, Tomer Fireaizen, Metzer, Gal,   +11 more
core   +1 more source

Secrecy Performance Analysis of IRS-assisted NLoS Wireless Systems Over Nakagami-m Fading Channel

Journal of Communications Software and Systems
Due to increasing security threats in next generation wireless networks and promising potential of intelligent reflecting surface (IRS) in enhancing the wireless system’s performance, this paper focuses on secure transmission of passive and active IRS ...
Ravneet Kaur, Bajrang Bansal
doaj   +1 more source

Integrating Movable Antennas and Intelligent Reflecting Surfaces (MA-IRS): Fundamentals, Practical Solutions, and ISAC

IEEE Wireless Communications
Movable antennas (MAs) and intelligent reflecting surfaces (IRSs) enable active antenna repositioning and passive phase-shift tuning for channel reconfiguration, respectively. Integrating MAs and IRSs boosts spatial degrees of freedom, significantly enhancing wireless network capacity, coverage, and reliability.
Qingqing Wu, Ziyuan Zheng, Ying Gao, Weidong Mei, Xin Wei, Wen Chen, Boyu Ning   +6 more
openaire   +2 more sources

Degradation Mechanisms in PEM Water Electrolysis: Diagnosis and Impact

Advanced Materials Technologies, Volume 11, Issue 11, 5 June 2026.
This review provides an analysis of degradation mechanisms in proton electrolyte membrane water electrolyzers (PEMWE), focusing on all key components. It discusses diagnostic and measurement techniques for evaluating degradation, less‐studied mechanisms, and an expert survey.
Annik Bernhardt, Katja Lange, Robert Göckeritz, Erik Grunwald, Angelika Hähnel, Alexander Müller, Volker Naumann, Sistan Rasuli, Wolfram Münchgesang, Bruno G. Pollet, Kerstin Witte‐Bodnar, Klemens Ilse   +11 more
wiley   +1 more source

IRS-Aided MIMO Spectrum Sensing via Alternating Phase Optimization

IEEE Access
This paper investigates spectrum sensing in an intelligent reflecting surface (IRS)-assisted multiple-input multiple-output (MIMO) cognitive radio system. The objective is to enhance sensing performance by exploiting the passive beamforming capability of
Kuldeep Yadav, Mohammed Aarif K.O., Patri Upender   +2 more
doaj   +1 more source

Topology‐Oriented Crystalline Architectures of Metal Oxides for Advanced Electrocatalytic Water Splitting

cScience, Volume 2, Issue 2, June 2026.
ABSTRACT Electrocatalytic water splitting remains a cornerstone strategy for sustainable hydrogen production; however, its overall efficiency is restricted by the sluggish oxygen evolution reaction. Metal oxides have emerged as highly promising catalysts owing to their adaptable electronic structures, high chemical stability, and abundant redox‐active ...
Aoxiang Zhu, Mincan Yang, Jiamu Feng, Ziwen Yi, Weilin Xu, Jia Li, Jun Wan   +6 more
wiley   +1 more source