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In this paper, we investigate the secrecy energy-efficiency (SEE) of a multi-user downlink non-orthogonal multiple access (NOMA) system assisted by multiple ambient backscatter communications (AmBC) in the presence of a passive…

信息论 · 计算机科学 2025-11-26 Miled Alam , Abdul Karim Gizzini , Laurent Clavier

This work investigates the covertness and security performance of Internet-of-Things (IoTs) networks under Rayleigh fading environments. Specifically, a cellular source transmits covert information to cell-edge users with the assistance of…

信号处理 · 电气工程与系统科学 2025-09-03 Thai-Hoc Vu , Anh-Tu Le , Ngo Hoang Tu , Tan N. Nguyen , Miroslav Voznak

Enabling cooperation in a NOMA system is a promising approach to improve its performance. In this paper, we study the cooperation in a secure NOMA system, where the legitimate users are distributed uniformly in the network and the…

信息论 · 计算机科学 2019-03-14 Milad Abolpour , Mahtab Mirmohseni , Mohammad Reza Aref

To overcome devices' limitations in performing computation-intense applications, mobile edge computing (MEC) enables users to offload tasks to proximal MEC servers for faster task computation. However, current MEC system design is based on…

网络与互联网体系结构 · 计算机科学 2020-05-19 Chen-Feng Liu , Mehdi Bennis , Merouane Debbah , H. Vincent Poor

Mobile edge computing (MEC) is a promising paradigm to accommodate the increasingly prosperous delay-sensitive and computation-intensive applications in 5G systems. To achieve optimum computation performance in a dynamic MEC environment,…

信息论 · 计算机科学 2021-10-08 Xian Li , Liang Huang , Hui Wang , Suzhi Bi , Ying-Jun Angela Zhang

Driven by explosive computation demands of Internet of Things (IoT), mobile edge computing (MEC) provides a promising technique to enhance the computation capability for mobile users. In this paper, we propose a joint resource allocation…

信号处理 · 电气工程与系统科学 2020-06-22 Xiaojing Chen , Zhouyu Lu , Wei Ni , Xin Wang , Feng Wang , Shunqing Zhang , Shugong Xu

In this paper, we consider a multi-user mobile edge computing (MEC) network powered by wireless power transfer (WPT), where each energy-harvesting WD follows a binary computation offloading policy, i.e., data set of a task has to be…

分布式、并行与集群计算 · 计算机科学 2018-03-26 Suzhi Bi , Ying-Jun Angela Zhang

6G wireless networks will require the flexibility to accommodate an extremely diverse set of service types. This necessitates the use of mixed numerologies to accommodate different quality of service (QoS) requirements. Non-orthogonal…

信号处理 · 电气工程与系统科学 2021-02-02 Stephen McWade , Mark F. Flanagan , Juquan Mao , Lei Zhang , Arman Farhang

The amalgamation of non-orthogonal multiple access (NOMA) and physical layer security is a significant research interest for providing spectrally-efficient secure fifth-generation networks. Observing the secrecy issue among multiplexed NOMA…

信息论 · 计算机科学 2021-03-31 Sapna Thapar , Deepak Mishra , Ravikant Saini

In this paper, the problem of joint radio and computation resource management over multi-channel is investigated for multi-user partial offloading mobile edge computing (MEC) system. The target is to minimize the weighted sum of energy…

信息论 · 计算机科学 2021-05-04 Bizheng Liang , Rongfei Fan , Han Hu

Multi-access edge computing (MEC) and non-orthogonal multiple access (NOMA) have been regarded as promising technologies to improve computation capability and offloading efficiency of the mobile devices in the sixth generation (6G) mobile…

信息论 · 计算机科学 2021-05-26 Haodong Li , Fang Fang , Zhiguo Ding

The optimal allocation of time and energy resources is characterized in a Wireless Powered Communication Network (WPCN) with non-Orthogonal Multiple Access (NOMA). We consider two different formulations; in the first one (max-sum), the…

Mobile edge computing (MEC) has emerged for reducing energy consumption and latency by allowing mobile users to offload computationally intensive tasks to the MEC server. Due to the spectrum reuse in small cell network, the inter-cell…

网络与互联网体系结构 · 计算机科学 2019-12-18 Jianen Yan , Ning Li , Zhaoxin Zhang , Alex X. Liu , Jose Fernan Martinez , Xin Yuan

Next-generation wireless networks will provide users ubiquitous low-latency computing services using devices at the network edge, called mobile edge computing (MEC). The key operation of MEC, mobile computation offloading (MCO), is to…

信息论 · 计算机科学 2018-05-31 Seung-Woo Ko , Kaifeng Han , Kaibin Huang

Mobile edge computing (MEC) and wireless power transfer (WPT) are two promising techniques to enhance the computation capability and to prolong the operational time of low-power wireless devices that are ubiquitous in Internet of Things.…

信号处理 · 电气工程与系统科学 2018-07-19 Fuhui Zhou , Yongpeng Wu , Rose Qingyang Hu , Yi Qian

Non-orthogonal multiple access (NOMA) is a promising multiple access technique for beyond fifth generation (B5G) cellular wireless networks, where several users can be served on a single time-frequency resource block, using the concepts of…

信号处理 · 电气工程与系统科学 2020-02-04 Mehdi Monemi , Hina Tabassum , Ramein Zahedi

This paper studies a wireless powered mobile edge computing (MEC) system with device-to-device (D2D)-enabled task offloading. In this system, a set of distributed multi-antenna energy transmitters (ETs) use collaborative energy beamforming…

信息论 · 计算机科学 2019-11-01 Dixiao Wu , Feng Wang , Xiaowen Cao , Jie Xu

This letter proposes a novel pinching antenna systems (PASS) enabled non-orthogonal multiple access (NOMA) multi-access edge computing (MEC) framework. An optimization problem is formulated to minimize the maximum task delay by optimizing…

信号处理 · 电气工程与系统科学 2026-01-16 Yuan Ai , Xidong Mu , Pengbo Si , Yuanwei Liu

Optimizing non-orthogonal multiple access (NOMA) in multi-cell scenarios is much more challenging than the single-cell case because inter-cell interference must be considered. Most papers addressing NOMA consider a single cell. We take a…

信息论 · 计算机科学 2020-10-28 Lei You , Di Yuan , Lei Lei , Sumei Sun , Symeon Chatzinotas , Björn Ottersten

Cache-assisted ultra-dense mobile edge computing (MEC) networks are a promising solution for meeting the increasing demands of numerous Internet-of-Things mobile devices (IMDs). To address the complex interferences caused by small base…

信息论 · 计算机科学 2024-10-22 Tianqing Zhou , Bobo Wang , Dong Qin , Xuefang Nie , Nan Jiang , Chunguo Li