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Terahertz (THz) systems have the benefit of high bandwidth and hence are capable of supporting ultra-high data rates, albeit at the cost of high pathloss. Hence they tend to harness high-gain beamforming. Therefore a novel hybrid 3D…

Signal Processing · Electrical Eng. & Systems 2022-02-07 Xufang Wang , Zihuai Lin , Feng Lin , Lajos Hanzo , Life Fellow

Unmanned aerial vehicles (UAVs) are envisioned to be extensively employed for assisting wireless communications in Internet of Things (IoT) applications. On the other hand, terahertz (THz) enabled intelligent reflecting surface (IRS) is…

Information Theory · Computer Science 2022-04-04 Milad Tatar Mamaghani , Yi Hong

Intelligent reflecting surface (IRS)-assisted full-duplex (FD) terahertz (THz) communication systems have emerged as a promising paradigm to satisfy the escalating demand for ultra-high data rates and spectral efficiency in future wireless…

Information Theory · Computer Science 2025-10-30 Chi Qiu , Wen Chen , Qingqing Wu , Fen Hou , Wanming Hao , Ruiqi Liu , Derrick Wing Kwan Ng

Reconfigurable intelligent surfaces (RISs) are considered to be a key enabler of highly energy-efficient 6G and beyond networks. This property arises from the absence of power amplifiers in the structure, in contrast to active nodes, such…

Integrated sensing and communications (ISAC) are envisioned to be an integral part of future wireless networks, especially when operating at the millimeter-wave (mmWave) and terahertz (THz) frequency bands. However, establishing wireless…

Signal Processing · Electrical Eng. & Systems 2022-11-03 Sundeep Prabhakar Chepuri , Nir Shlezinger , Fan Liu , George C. Alexandropoulos , Stefano Buzzi , Yonina C. Eldar

Reconfigurable Intelligent Surfaces (RIS) or Intelligent Reflecting Surfaces (IRS) are metasurfaces that can be deployed in various places in wireless environments to make these environments controllable and reconfigurable. In this paper,…

Information Theory · Computer Science 2020-01-22 S. Mohammad Razavizadeh , Tommy Svensson

Reconfigurable intelligent surface (RIS) technology has emerged as a promising enabler for next-generation wireless networks, offering a paradigm shift from passive environments to programmable radio wave propagation. Despite the potential…

Emerging Technologies · Computer Science 2025-02-07 Wali Ullah Khan , Chandan Kumar Sheemar , Eva Lagunas , Symeon Chatzinotas

Reconfigurable intelligent surface (RIS) or intelligent reflecting surface (IRS) has recently been envisioned as one of the most promising technologies in the future sixth-generation (6G) communications. In this paper, we consider the joint…

Information Theory · Computer Science 2021-12-14 Zhangjie Peng , Zhiwei Chen , Cunhua Pan , Gui Zhou , Hong Ren

This paper addresses the crucial need for reliable wireless communication in vehicular networks, particularly vital for the safety and efficacy of (semi-)autonomous driving amid increasing traffic. We explore the use of Reconfigurable…

Networking and Internet Architecture · Computer Science 2025-03-26 Salim Janji , Paweł Sroka , Adrian Kliks

Reconfigurable intelligent surface (RIS), a recently introduced technology for future wireless com-munication systems, enhances the spectral and energy efficiency by intelligently adjusting the propaga-tion conditions between a base station…

Signal Processing · Electrical Eng. & Systems 2022-03-08 Huimei Han , Jun Zhao , Zehui Xiong , Dusit Niyato , Wenchao Zhai , Marco Di Renzo , Quoc-Viet Pham , Weidang Lu

Reconfigurable intelligent surfaces (RIS) have drawn considerable attention recently due to their controllable scattering elements that are able to direct electromagnetic waves into desirable directions. Although RISs share some…

Information Theory · Computer Science 2021-04-08 Mohanad Obeed , Anas Chaaban

This paper presents a literature review on recent applications and design aspects of the intelligent reflecting surface (IRS) in the future wireless networks. Conventionally, the network optimization has been limited to transmission control…

Information Theory · Computer Science 2020-07-28 Shimin Gong , Xiao Lu , Dinh Thai Hoang , Dusit Niyato , Lei Shu , Dong In Kim , Ying-Chang Liang

With the emergence of the internet of things (IoT) technology, wireless connectivity should be more ubiquitous than ever. In fact, the availability of wireless connection everywhere comes with security threats that, unfortunately, cannot be…

Signal Processing · Electrical Eng. & Systems 2020-09-11 Abdullateef Almohamad , Anas M. Tahir , Ayman Al-Kababji , Haji M. Furqan , Tamer Khattab , Mazen O. Hasna , Huseyin Arslan

Reconfigurable intelligent surfaces (RISs) have emerged as a promising solution for enabling energy-efficient and flexible spectrum usage in wireless communication, particularly in the context of sixth-generation (6G) networks. While…

Signal Processing · Electrical Eng. & Systems 2026-05-14 Farjam Karim , Deepak Kumar , Prathapasinghe Dharmawansa , Nurul Huda Mahmood , Arthur Sousa de Sena , Matti-Latva-aho

Challenging environments comprise a range of scenarios, which share the fact that it is extremely difficult to establish a communication link using conventional technology due to many impairments typically associated with the propagation…

Signal Processing · Electrical Eng. & Systems 2022-06-23 Steven Kisseleff , Symeon Chatzinotas , Björn Ottersten

Backscatter Communication (BackCom), which is based on passive reflection and modulation of an incident radio-frequency (RF) wave, has emerged as a cutting-edge technological paradigm for self-sustainable Internet-of-things (IoT).…

Information Theory · Computer Science 2021-07-19 Sarah Basharat , Syed Ali Hassan , Aamir Mahmood , Zhiguo Ding , Mikael Gidlund

Although reconfigurable intelligent surfaces (RISs) can improve the performance of wireless networks by smartly reconfiguring the radio environment, existing passive RISs face two key challenges, i.e., double-fading attenuation and…

Signal Processing · Electrical Eng. & Systems 2023-10-05 Wen Wang , Wanli Ni , Hui Tian , Naofal Al-Dhahir

Reconfigurable Intelligent Surface (RIS) has emerged as one of the key technologies for 6G in recent years, which comprise a large number of low-cost passive elements that can smartly interact with the impinging electromagnetic waves for…

Networking and Internet Architecture · Computer Science 2020-09-02 Baoling Sheen , Jin Yang , Xianglong Feng , Md Moin Uddin Chowdhury

In this paper, we propose a novel algorithm for energy-efficient, low-latency, accurate inference at the wireless edge, in the context of 6G networks endowed with reconfigurable intelligent surfaces (RISs). We consider a scenario where new…

Information Theory · Computer Science 2023-05-19 Kyriakos Stylianopoulos , Mattia Merluzzi , Paolo Di Lorenzo , George C. Alexandropoulos

Cooperative rate splitting (CRS), built upon rate splitting multiple access (RSMA) and opportunistic user relaying, has been recognized as a promising transmission strategy to enhance the user fairness and spectral efficiency in…

Information Theory · Computer Science 2022-08-09 Kangchun Zhao , Yijie Mao , Zhaohui Yang , Lixiang Lian , Bruno Clerckx