Results 41 to 50 of about 3,484 (213)

Two-Way Communications via Reconfigurable Intelligent Surface [PDF]

, 2020
The novel reconfigurable intelligent surface (RIS) is an emerging technology which facilitates high spectrum and energy efficiencies in Beyond 5G and 6G wireless communication applications.
Wang, G, Rongfei Fan, Jamie Evans, Fan, R, Atapattu, S, Evans, J, Saman Atapattu, Prathapasinghe Dharmawansa, Dharmawansa, P, Gongpu Wang   +9 more
core   +1 more source

Joint User Localization and Location Calibration of A Hybrid Reconfigurable Intelligent Surface

, 2023
The recent research in the emerging technology of reconfigurable intelligent surfaces (RISs) has identified its high potential for localization and sensing.
Ghazalian, Reza,, Jäntti, Riku,, George C Alexandropoulos, Riku Jäntti, Ghazalian, Reza, Gonzalo Seco-Granados, Henk Wymeersch, Alexandropoulos, G. C., Reza Ghazalian, Hui Chen, Seco-Granados, G., Alexandropoulos, G. C.,, Seco-Granados, G.,, Chen, Hui, Wymeersch, Henk,, Wymeersch, Henk, J\ue4ntti, Riku, Chen, Hui,   +17 more
core   +1 more source

Overview of reconfigurable intelligent surface for new-generation mobile communication

Dianxin kexue, 2022
Reconfigurable intelligent surface technology, which features low cost, low energy consumption and easy deployment, is the potential key technology of 6G.By intelligently regulating electromagnetic waves in space, RIS can assist in building an ...
Zilu GAO, Shaohui SUN, Li LI
doaj   +2 more sources

RIS-aided integrated sensing and communication: a mini-review

Frontiers in Signal Processing, 2023
Integrating sensing and communication (ISAC) is a cutting-edge technology aimed at achieving high-resolution target sensing and high data-rate communications using a shared spectrum. This innovative approach optimizes the usage of the radio spectrum with
Mirza Asif Haider, Yimin D. Zhang
doaj   +1 more source

iRIS: A Deep Policy Learning Framework for Intelligent Distribution of RIS Elements

IEEE Open Journal of the Communications Society
In the recent past, extensive research has been conducted considering reconfigurable intelligent surface (RIS) as an important building block in wireless communication systems.
Sudhanshu Arya, Saranya Karattupalayam Chidambaram, Yogesh Kumar Choukiker, Abhijit Bhowmick   +3 more
doaj   +1 more source

Active Reconfigurable Intelligent Surface-Assisted Cell-Free Massive MIMO

, 2023
International audienceThis work analyzes the spectral efficiency (SE) of theactive Reconfigurable intelligent surfaces (RIS)-assisted cell-free(CF) massive multiple-input multiple-output (mMIMO) underRayleigh fading channels.
Shin, Suho, Theodore, Woode, Anokye, Prince, Lee, Kyoung-Jae, Asiedu, Derek, Kwaku Pobi   +4 more
core   +1 more source

Hybrid Active-Passive Reconfigurable Intelligent Surface-Assisted UAV Communications [PDF]

, 2023
We consider a novel hybrid active-passive reconfigurable intelligent surface (RIS)-assisted unmanned aerial vehicle (UAV) air-ground communications system.
Nguyen, Nhan T., Wu, Qingqing, Chatzinotas, Symeon, Nguyen, V.-Dinh, Juntti, Markku, Tölli, Antti   +5 more
core   +1 more source

A Novel Reconfigurable Intelligent Surface for Wide-Angle Passive Beamforming

, 2022
A design for a highly reconfigurable intelligent surface (RIS) that can provide 3-D passive reflective beamforming suitable for sub-6-GHz frequency bands is proposed.
Shanpu Shen, Chi-Yuk Chiu, Chiu, Chi Yuk, Rao, Junhui, Zan Li, Murch, Ross, Yujie Zhang, Junhui Rao, Zhang, Yujie, Li, Zan, Shiwen Tang, Tang, Shiwen, Ross Murch, Shen, Shanpu   +13 more
core   +2 more sources

Performance of Joint Symbol Level Precoding and RIS Phase Shift Design in the Finite Block Length Regime with Constellation Rotation

, 2023
peer reviewedIn this paper, we tackle the problem of joint symbol level precoding (SLP) and reconfigurable intelligent surface (RIS) phase shift design with constellation rotation in the finite block length regime. We aim to increase energy efficiency
OTTERSTEN, Björn, Martins, Wallace A., AL-HRAISHAWI, Hayder, CHATZINOTAS, Symeon, ZIVUKU, Progress, KISSELEFF, Steven   +5 more
core   +1 more source

Reconfigurable Intelligent Surface Enhanced NOMA Assisted Backscatter Communication System

, 2021
To enhance the backscatter-links with double fading effect in non-orthogonal multiple access assisted backscatter communication (NOMABC), a new reconfigurable intelligent surface (RIS) enhanced NOMABC (RIS-NOMABC) system is proposed. A joint optimization
Zuo, Jiakuo, Liu, Yuanwei, Yang, Liang, Liang, Ying Chang, Song, Lingyang   +4 more
core   +1 more source