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To achieve ubiquitous connectivity in next-generation networks through aerospace communications while maintaining high data rates, Terahertz (THz) band communications (0.1-10 THz) with large continuous bandwidths are considered a promising…

信号处理 · 电气工程与系统科学 2025-02-26 Weijun Gao , Chong Han , Zhi Chen , Yong Chen , Yuanzhi He , Wenjun Zhang

Terahertz (THz) communications (THzCom) has experienced a meteoric rise of interest, due to its benefits for ultra-high data rate transmission in the sixth generation (6G) and beyond era. Despite so, the research on exploring the potential…

信号处理 · 电气工程与系统科学 2024-10-28 Nan Yang , Akram Shafie

Future wireless services, such as the metaverse require high information rate, reliability, and low latency. Multi-user wireless systems can meet such requirements by utilizing the abundant terahertz bandwidth with a massive number of…

信息论 · 计算机科学 2023-03-15 Christo Kurisummoottil Thomas , Walid Saad

Sixth generation (6G) mobile networks may include new passive technologies, such as ambient backscatter communication or the use of reconfigurable intelligent surfaces, to avoid the emission of waves and the corresponding energy…

信号处理 · 电气工程与系统科学 2021-04-09 Romain Fara , Dinh-Thuy Phan-Huy , Philippe Ratajczak , Abdelwaheb Ourir , Marco Di Renzo , Julien de Rosny

Intelligent reflecting surfaces (IRS) have been proposed as a revolutionary technology owing to its capability of adaptively reconfiguring the propagation environment in a cost-effective and hardware-efficient fashion. While the application…

信号处理 · 电气工程与系统科学 2022-01-25 Rang Liu , Ming Li , Qian Liu , A. Lee Swindlehurst , Qingqing Wu

Intelligent reflecting surface (IRS), which consists of a large number of tunable reflective elements, is capable of enhancing the wireless propagation environment in a cellular network by intelligently reflecting the electromagnetic waves…

信号处理 · 电气工程与系统科学 2021-06-10 Tao Jiang , Hei Victor Cheng , Wei Yu

Intelligent reflecting surfaces (IRSs) are a promising technology for enhancing coverage and spectral efficiency, both in the sub-6 GHz and the millimeter wave (mmWave) bands. Existing approaches to leverage the benefits of IRS involve the…

信息论 · 计算机科学 2023-07-03 L. Yashvanth , Chandra R. Murthy

This paper investigates the passive beamforming and deployment design for an intelligent reflecting surface (IRS) aided full-duplex (FD) wireless system, where an FD access point (AP) communicates with an uplink (UL) user and a downlink…

信息论 · 计算机科学 2022-10-17 Yunlong Cai , Ming-Min Zhao , Kaidi Xu , Rui Zhang

Intelligent Reflecting Surfaces (IRS) are anticipated to serve as a key cornerstone of future wireless networks, providing an unmatched capability to deterministically shape electromagnetic wave propagation. Despite this potential, most…

网络与互联网体系结构 · 计算机科学 2025-12-02 Fatih E. Bilgen , A. Sila Okcu , O. Tansel Baydas , Ozgur B. Akan

Intelligent reflecting surfaces (IRSs) constitute passive devices, which are capable of adjusting the phase shifts of their reflected signals, and hence they are suitable for passive beamforming. In this paper, we conceive their design with…

信号处理 · 电气工程与系统科学 2021-06-03 Chenghao Feng , Wenqian Shen , Xinyu Gao , Jianping An

Intelligent reflecting surface (IRS)-aided communication is a promising technology for beyond 5G (B5G) systems, to reconfigure the radio environment proactively. However, IRS-aided communication in practice requires efficient channel…

信息论 · 计算机科学 2021-11-23 Dingyang Ding , Di Wu , Yong Zeng , Shi Jin , Rui Zhang

In this study, we investigate the use of intelligent reflecting surfaces (IRSs) in multi-operator communication systems for 6G networks, focusing on sustainable and efficient resource management. This research is motivated by two critical…

信息论 · 计算机科学 2025-11-10 Hiroaki Hashida , Yuichi Kawamoto , Nei Kato

Unlocking the potential of terahertz (THz) and millimetre (mm) waves for next generation communications and imaging applications requires reconfigurable intelligent surfaces (RIS) with programmable elements that can manipulate the waves in…

光学 · 物理学 2025-03-27 Yury Malevich , Said Ergoktas , Gokhan Bakan , Pietro Stainer , Coskun Kocabas

Terahertz (THz)-band communications are celebrated as a key enabling technology for next-generation wireless systems that promises to integrate a wide range of data-demanding and delay-sensitive applications. Following recent advancements…

信号处理 · 电气工程与系统科学 2020-05-04 Hadi Sarieddeen , Nasir Saeed , Tareq Y. Al-Naffouri , Mohamed-Slim Alouini

Intelligent reflecting surface (IRS) is a cost-effective solution for achieving high spectrum and energy efficiency in future wireless networks by leveraging massive low-cost passive elements that are able to reflect the signals with…

信息论 · 计算机科学 2020-01-03 Qingqing Wu , Rui Zhang

This paper studies the feasibility of deploying intelligent reflecting surfaces (IRSs) in massive MIMO (multiple-input multiple-output) systems to improve the performance of users in the service dead zone. To reduce the channel training…

信息论 · 计算机科学 2022-01-13 Zhaorui Wang , Liang Liu , Shuowen Zhang , Shuguang Cui

Intelligent reflecting surface (IRS), which is capable to adjust propagation conditions by controlling phase shifts of the reflected waves that impinge on the surface, has been widely analyzed for enhancing the performance of wireless…

系统与控制 · 电气工程与系统科学 2021-06-29 Shuhang Zhang , Hongliang Zhang , Boya Di , Yunhua Tan , Marco Di Renzo , Zhu Han , H. Vincent Poor , Lingyang Song

Free-space optical (FSO) systems are able to offer the high data-rate, secure, and cost-efficient communication links required for applications such as wireless front- and backhauling for 5G and 6G communication networks. Despite the…

信号处理 · 电气工程与系统科学 2021-05-28 Vahid Jamali , Hedieh Ajam , Marzieh Najafi , Bernhard Schmauss , Robert Schober , H. Vincent Poor

With the advancement of sensing technologies over the years, it has become critical to ensure the seamless connectivity of the Internet of Things (IoT) gadgets. With the advancement of communication technology, cellular networks are…

信号处理 · 电气工程与系统科学 2022-07-19 Mobasshir Mahbub , Raed M. Shubair

In this letter, we consider a multicast system where a single-antenna transmitter sends a common message to multiple single-antenna users, aided by an intelligent reflecting surface (IRS) equipped with $N$ passive reflecting elements. Prior…

信号处理 · 电气工程与系统科学 2020-09-02 Qin Tao , Shuowen Zhang , Caijun Zhong , Rui Zhang