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相关论文: Queue-Aware STAR-RIS Assisted NOMA Communication S…

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In this paper, an intelligent reflecting surface (IRS) is introduced to assist an unmanned aerial vehicle (UAV) communication system based on non-orthogonal multiple access (NOMA) for serving multiple ground users. We aim to minimize the…

信息论 · 计算机科学 2022-06-14 Yuanxin Cai , Zhiqiang Wei , Shaokang Hu , Chang Liu , Derrick Wing Kwan Ng , Jinhong Yuan

Reconfigurable intelligent surface (RIS) has emerged as a cost-effective solution to improve wireless communication performance through just passive reflection. Recently, the concept of simultaneously transmitting and reflecting RIS…

信息论 · 计算机科学 2023-11-27 Anastasios Papazafeiropoulos , Pandelis Kourtessis , Symeon Chatzinotas

Simultaneously transmitting and reflecting reconfigurable intelligent surface (STAR-RIS) is a cutting-edge concept for the sixth-generation (6G) wireless networks. In this paper, we propose a novel system that incorporates STAR-RIS with…

In this paper, simultaneously transmitting and reflecting (STAR) reconfigurable intelligent surface (RIS) is investigated in the multi-user mobile edge computing (MEC) system to improve the computation rate. Compared with traditional…

信息论 · 计算机科学 2023-05-02 Zhenrong Liu , Zongze Li , Miaowen Wen , Yi Gong , Yik-Chung Wu

This work presents non-orthogonal multiple access (NOMA) enabled energy-efficient alternating optimization framework for backscatter aided wireless powered uplink sensors communications for beyond 5G intelligent transportation system (ITS).…

信号处理 · 电气工程与系统科学 2022-05-17 Asim Ihsan , Wen Chen , Wali Ullah Khan , Qingqing Wu , Kunlun Wang

Information-bearing reconfigurable intelligent surfaces (IB-RIS) provide a promising solution to self-sustainable and green communications by harvesting ambient radio frequency energy while embedding information via passive reflection. This…

信号处理 · 电气工程与系统科学 2026-03-24 Zeyang Sun , Shuai Han , Chenyu Wu , Sai Xu , Yuanwei Liu

Reconfigurable intelligent surfaces (RISs) have sparked a renewed interest in the research community envisioning future wireless communication networks. In this study, we analyzed the performance of RIS-enabled non-orthogonal multiple…

Device-to-device (D2D) communications offers high spectral efficiency, low energy consumption and transmission latency. However, one of the main limitations of D2D communications is co-channel interference from underlaying wireless system.…

信号处理 · 电气工程与系统科学 2023-08-02 Wali Ullah Khan , Eva Lagunas , Asad Mahmood , Zain Ali , Symeon Chatzinotas , Björn Ottersten

A novel framework of intelligent reflecting surface (IRS)-aided multiple-input single-output (MISO) non-orthogonal multiple access (NOMA) network is proposed, where a base station (BS) serves multiple clusters with unfixed number of users…

信号处理 · 电气工程与系统科学 2021-12-02 X. Gao , Y. Liu , X. Liu , L. Song

Innovative reconfigurable intelligent surface (RIS) technologies are rising and recognized as promising candidates to enhance 6G and beyond wireless communication systems. RISs acquire the ability to manipulate electromagnetic signals,…

This study introduces an innovative approach for adaptive power allocation in Non-Orthogonal Multiple Access (NOMA) systems, enhanced by the integration of spaceborne and terrestrial signals through a Reconfigurable Intelligent Surface…

信号处理 · 电气工程与系统科学 2025-08-05 M Khalil , Ke Wang , Jinho Choi

Different from conventional reconfigurable intelligent surfaces (RIS), a recent innovation called simultaneous transmitting and reflecting reconfigurable intelligent surface (STAR-RIS) has emerged, aimed at achieving complete 360-degree…

信息论 · 计算机科学 2023-09-27 Abdelhamid Salem , Kai-Kit Wong , Chan-Byoung Chae , Yangyang Zhang

By activating blocked users and altering successive interference cancellation (SIC) sequences, reconfigurable intelligent surfaces (RISs) become promising for enhancing non-orthogonal multiple access (NOMA) systems. This work investigates…

信息论 · 计算机科学 2020-06-25 Chao Zhang , Wenqiang Yi , Yuanwei Liu , Zhijin Qin , Kok Keong Chai

A simultaneously transmitting and reflecting reconfigurable intelligent surface (STAR-RIS) aided integrated sensing, computing, and communication (ISCC) Internet of Robotic Things (IoRT) framework is proposed. Specifically, the full-duplex…

信号处理 · 电气工程与系统科学 2024-12-03 Haochen Li , Xidong Mu , Yuanwei Liu , Yue Chen , Pan Zhiwen

This paper introduces a reconfigurable intelligent surface (RIS)-assisted grant-free non-orthogonal multiple-access (GF-NOMA) scheme. To ensure the power reception disparity required by the power domain NOMA (PD-NOMA), we propose a joint…

信号处理 · 电气工程与系统科学 2023-06-16 Recep Akif Tasci , Fatih Kilinc , Abdulkadir Celik , Asmaa Abdallah , Ahmed M. Eltawil , Ertugrul Basar

This work studies the effectiveness of a novel simultaneous transmission and reflection reconfigurable intelligent surface (STAR-RIS) aided Full-Duplex (FD) communication system. We aim to maximize the energy efficiency by jointly…

信号处理 · 电气工程与系统科学 2022-04-18 Pengxin Guan , Yiru Wang , Hongkang Yu , Yuping Zhao

We investigate the downlink outage performance of double-RIS-aided non-orthogonal multiple access (NOMA), where a near-BS and a near-users RISs setup are deployed. To extend the coverage to 360 degrees, we deploy a simultaneously…

信息论 · 计算机科学 2023-04-11 Wilson de Souza Junior , Taufik Abrao

A novel framework of intelligent reflecting surface (IRS)-aided multiple-input single-output (MISO) non-orthogonal multiple access (NOMA) network is proposed, where a base station (BS) serves multiple clusters with unfixed number of users…

信息论 · 计算机科学 2020-12-02 Xinyu Gao , Yuanwei Liu , Xiao Liu , Zhijin Qin

Reconfigurable intelligent surfaces (RISs) can be densely deployed in the environment to create multi-reflection line-of-sight (LoS) links for signal coverage enhancement. However, conventional reflection-only RISs can only achieve…

信号处理 · 电气工程与系统科学 2025-05-21 Bonan An , Weidong Mei , Yuanwei Liu , Dong Wang , Zhi Chen

A novel simultaneously transmitting and reflecting (STAR) system design relying on reconfigurable intelligent surfaces (RISs) is conceived. First, an existing prototype is reviewed and the potential benefits of STAR-RISs are discussed.…

信息论 · 计算机科学 2022-09-14 Yuanwei Liu , Xidong Mu , Jiaqi Xu , Robert Schober , Yang Hao , H. Vincent Poor , Lajos Hanzo