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This paper proposes an adaptive hybrid non-orthogonal multiple access (NOMA)-time division multiple access (TDMA) scheme for multi-user visible light communication (VLC) networks, aiming to enhance users' sum-rate performance while…

Systems and Control · Electrical Eng. & Systems 2025-08-07 Tuan A. Hoang , Chuyen T. Nguyen , Thanh V. Pham

In this letter, we study a rate-splitting multiple access (RSMA)-based intelligent reflecting surface (IRS)-aided multi-user multiple-input single-output (MISO) secure communication system with a potential eavesdropper (Eve). Aiming to…

Information Theory · Computer Science 2022-11-28 Ying Gao , Qingqing Wu , Wen Chen , Derrick Wing Kwan Ng

In this paper, the novel simultaneously transmitting and reflecting (STAR) reconfigurable intelligent surface (RIS), which enables full-space coverage on users located on both sides of the surface, is investigated in the multi-user mobile…

Information Theory · Computer Science 2022-12-02 Zhenrong Liu , Zongze Li , Miaowen Wen , Yi Gong , Yik-Chung Wu

Power-domain non-orthogonal multiple access (NOMA) has become a promising technology to exploit the new dimension of the power domain to enhance the spectral efficiency of wireless networks. However, most existing NOMA schemes rely on the…

Signal Processing · Electrical Eng. & Systems 2020-03-24 Min Fu , Yong Zhou , Yuanming Shi , Khaled B. Letaief

Multi-access edge computing (MEC) has been regarded as a promising technique for enhancing computation capabilities for wireless networks. In this paper, we study physical layer security in an MEC system where multiple users offload partial…

Information Theory · Computer Science 2021-07-06 Yating Wen , Tong-Xing Zheng , Yongxia Tong , Hao-Wen Liu , Xin Chen , Pengcheng Mu , Hui-Ming Wang

In this letter, the impact of two phase shifting designs, namely random phase shifting and coherent phase shifting, on the performance of intelligent reflecting surface (IRS) assisted non-orthogonal multiple access (NOMA) is studied.…

Information Theory · Computer Science 2020-01-30 Zhiguo Ding , Robert Schober , H. Vincent Poor

In this paper, we develop a resource allocation technique for a hybrid time division multiple access (TDMA) - non-orthogonal multiple access (NOMA) system with opportunistic time assignment. In particular, the available transmission time is…

Networking and Internet Architecture · Computer Science 2020-03-05 Xinchen Wei , Haitham Al-Obiedollah , Kanapathippillai Cumanan , Miao Zhang , Jie Tang , Wei Wang , Octavia A. Dobre

This paper considers a full-duplex (FD) mobile-edge computing (MEC) system with non-orthogonal multiple access (NOMA) and energy harvesting (EH), where one group of users simultaneously offload task data to the base station (BS) via NOMA…

Information Theory · Computer Science 2018-08-01 Zhaohui Yang , Jiancao Hou , Mohammad Shikh-Bahaei

Intelligent reflecting surface (IRS) has been considered as an efficient way to boost the computation capability of mobile edge computing (MEC) system, especially when the communication links is blocked or the communication signal is weak.…

Information Theory · Computer Science 2024-07-16 N. Li , W. Hao , X. Li , Z. Zhu , Z. Tang , S. Yang

Simultaneous transmitting and reflecting reconfigurable intelligent surfaces (STAR-RISs) has been considered as a promising auxiliary device to enhance the performance of the wireless network, where users located at the different sides of…

Information Theory · Computer Science 2021-12-01 Yi Guo , Fang Fang , Donghong Cai , Zhiguo Ding

As a key technology in the 5G era, Mobile Edge Computing (MEC) has developed rapidly in recent years. MEC aims to reduce the service delay of mobile users, while alleviating the processing pressure on the core network. MEC can be regarded…

Distributed, Parallel, and Cluster Computing · Computer Science 2021-06-11 Minxian Xu , Qiheng Zhou , Huaming Wu , Weiwei Lin , Kejiang Ye , Chengzhong Xu

Mobile-edge computing (MEC) is an emerging technology for enhancing the computational capabilities of mobile devices and reducing their energy consumption via offloading complex computation tasks to the nearby servers. Multiuser MEC at…

Information Theory · Computer Science 2018-11-20 Zezu Liang , Yuan Liu , Tat-Ming Lok , Kaibin Huang

Mobile edge computing (MEC) provides users with a high quality experience (QoE) by placing servers with rich services close to the end users. Compared with local computing, MEC can contribute to energy saving, but results in increased…

Networking and Internet Architecture · Computer Science 2020-08-24 JunJie Yu , Han Wang , Mingxiong Zhao , WenTao Li , HuiQi Bao , Li Yin , Mi Wu

We study a wireless edge-computing system which allows multiple users to simultaneously offload computation-intensive tasks to multiple massive-MIMO access points, each with a collocated multi-access edge computing (MEC) server.…

Signal Processing · Electrical Eng. & Systems 2020-05-15 Rafia Malik , Mai Vu

In this paper, we investigate an intelligent reflecting surface (IRS) assisted cell-free multiple input multiple output (MIMO) communication system, where distributed multiple IRSs are dedicated deployed to assist distributed multiple base…

Information Theory · Computer Science 2021-08-18 Xie Xie , Chen He , Xiaoya Li , Kun Yang , Z. Jane Wang

Reflecting intelligent surfaces (RIS) has gained significant attention due to its high energy and spectral efficiency in next-generation wireless networks. By using low-cost passive reflecting elements, RIS can smartly reconfigure the…

Signal Processing · Electrical Eng. & Systems 2023-04-03 Wali Ullah Khan , Eva Lagunas , Asad Mahmood , Zain Ali , Muhammad Asif Symeon Chatzinotas , Björn Ottersten

Vehicular edge computing (VEC) becomes a promising paradigm for the development of emerging intelligent transportation systems. Nevertheless, the limited resources and massive transmission demands bring great challenges on implementing…

Networking and Internet Architecture · Computer Science 2022-11-21 Xincao Xu , Kai Liu , Penglin Dai , Feiyu Jin , Hualing Ren , Choujun Zhan , Songtao Guo

Intelligent reflecting surface (IRS) are able to amend radio propagation condition tasks on account of its functional properties in phase shift optimizing. In fact, there exists geometry manifold in the base-station (BS) beamforming matrix…

Signal Processing · Electrical Eng. & Systems 2021-09-30 Liyue Zhang , Qing Wang , Haozhi Wang

Mobile edge computing (MEC) is considered as an efficient method to relieve the computation burden of mobile devices. In order to reduce the energy consumption and time delay of mobile devices (MDs) in MEC, multiple users multiple input and…

Signal Processing · Electrical Eng. & Systems 2020-01-07 Changfeng Ding , Jun-Bo Wang , Ming Cheng , Chuanwen Chang , Jin-Yuan Wang , Min Lin

The various requirements in terms of data rates and latency in beyond 5G and 6G networks have motivated the integration of a variety of communications schemes and technologies to meet these requirements in such networks. Among these schemes…

Information Theory · Computer Science 2023-04-11 Omar Maraqa , Saad Al-Ahmadi , Aditya Rajasekaran , Hamza Sokun , Halim Yanikomeroglu , Sadiq M. Sait