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In a cognitive radio (CR) network, CR users intend to operate over the same spectrum band licensed to legacy networks. A tradeoff exists between protecting the communications in legacy networks and maximizing the throughput of CR…

信息论 · 计算机科学 2011-05-04 Yi Song , Jiang Xie

Wireless power transmission (WPT) is envisioned to be a promising technology for prolonging the lifetime of wireless devices in energy-constrained networks. This paper presents a general power beacon (PB) assisted multi-source transmission,…

信号处理 · 电气工程与系统科学 2018-04-04 Xuanxuan Tang , Yansha Deng , Yueming Cai , Wendong Yang , Arumugam Nallanathan

Mobile crowdsensing (MCS) enables data collection from massive devices to achieve a wide sensing range. Wireless power transfer (WPT) is a promising paradigm for prolonging the operation time of MCS systems by sustainably transferring power…

信号处理 · 电气工程与系统科学 2024-10-23 Yongqing Xu , Haoqing Qi , Zhiqin Wang , Xiang Zhang , Yong Li , Tony Q. S. Quek

In this work, for the first time, we tackle channel estimation design with pilots in the context of covert wireless communication. Specifically, we consider Rayleigh fading for the communication channel from a transmitter to a receiver and…

信息论 · 计算机科学 2019-08-02 Tingzhen Xu , Linlin Sun , Shihao Yan , Jinsong Hu , Feng Shu

This paper investigates the covert communications via cooperative jamming and relay selection in a wireless relay system, where a source intends to transmit a message to its destination with the help of a selected relay, and a warden…

信息论 · 计算机科学 2023-03-15 Chan Gao , Bin Yang , Dong Zheng , Xiaohong Jiang , Tarik Taleb

We analyze a cooperative wireless communication system with finite block length and finite battery energy, under quasi-static Rayleigh fading. Source and relay nodes are powered by a wireless energy transfer (WET) process, while using the…

信息论 · 计算机科学 2018-01-03 Onel L. A. López , Evelio M. G. Fernández , Richard D. Souza , Hirley Alves

Wireless power transfer (WPT) is a promising technology for powering up distributed devices in machine type networks. Over the last decade magnetic resonant coupling (MRC) received significant interest from the research community, since it…

信号处理 · 电气工程与系统科学 2021-12-07 Eleni Demarchou , Constantinos Psomas , Ioannis Krikidis

Distributed computing frameworks such as MapReduce and Spark are often used to process large-scale data computing jobs. In wireless scenarios, exchanging data among distributed nodes would seriously suffer from the communication bottleneck…

信息论 · 计算机科学 2023-10-25 Youlong Wu , Zhenhao Huang , Kai Yuan , Shuai Ma , Yue Bi

In the theory of wireless communications, average performance measures (APMs) are widely utilized to quantify the performance gains/impairments in various fading environments under various scenarios, and to comprehend how the factors…

信息论 · 计算机科学 2019-10-15 Ferkan Yilmaz

In this paper, we investigate the design of artificial-noise-aided secure multi-antenna transmission in slow fading channels. The primary design concerns include the transmit power allocation and the rate parameters of the wiretap code. We…

信息论 · 计算机科学 2016-11-17 Xi Zhang , Xiangyun Zhou , Matthew R. McKay

In wireless communication adversarial scenarios, signals are easily intercepted by non-cooperative parties, exposing the transmission of confidential information. This paper proposes a true-and-false (T/F) frequency multiplexing based…

系统与控制 · 电气工程与系统科学 2025-06-03 Zhisheng Yin , Nan Cheng , Mingjie Wang , Changle Li , Wei Xiang

In this paper, the problem of low-latency communication and computation resource allocation for digital twin (DT) over wireless networks is investigated. In the considered model, multiple physical devices in the physical network (PN) needs…

信息论 · 计算机科学 2024-02-02 Zhaohui Yang , Mingzhe Chen , Yuchen Liu , Zhaoyang Zhang

Existing multicasting schemes for massive content delivery do not fully utilize multicasting opportunities in delay tolerant content-oriented applications. In this paper, we propose a novel temporal-spatial aggregation-based multicasting…

信息论 · 计算机科学 2017-02-08 Jifang Xing , Ying Cui , Vincent Lau

In this paper, we analyze the performance of a time-slotted multi-antenna wireless powered communication (WPC) system, where a wireless device first harvests radio frequency (RF) energy from a power station (PS) in the downlink to…

信息论 · 计算机科学 2017-05-19 Rania Morsi , Elena Boshkovska , Esmat Ramadan , Derrick Wing Kwan Ng , Robert Schober

Covert communication aims to shield the very existence of wireless transmissions in order to guarantee a strong security in wireless networks. In this work, for the first time we examine the possibility and achievable performance of covert…

信息论 · 计算机科学 2017-04-18 Jinsong Hu , Shihao Yan , Xiangyun Zhou , Feng Shu , Jiangzhou Wang

Resonant Beam Charging (RBC) is a promising Wireless Power Transfer (WPT) technology to provide long-range, high-power, mobile and safe wireless power for the Internet of Things (IoT) devices. The Point-to-Multipoint (PtMP) RBC system can…

系统与控制 · 计算机科学 2018-09-26 Wen Fang , Qingqing Zhang , Mingqing Liu , Qingwen Liu , Pengfei Xia

This paper investigates covert prompt transmission for secure and efficient large language model (LLM) services over wireless networks. We formulate a latency minimization problem under fidelity and detectability constraints to ensure…

网络与互联网体系结构 · 计算机科学 2025-05-01 Ruichen Zhang , Yinqiu Liu , Shunpu Tang , Jiacheng Wang , Dusit Niyato , Geng Sun , Yonghui Li , Sumei Sun

This paper studies system stability and performance of multi-agent systems in the context of consensus problems over wireless multiple-access channels (MAC). We propose a consensus algorithm that exploits the broadcast property of the…

系统与控制 · 计算机科学 2018-04-30 Fabio Molinari , Sławomir Stańczak , Jörg Raisch

In this paper, we study a multi-user multiple-input-multiple-output secrecy simultaneous wireless information and power transfer (SWIPT) channel which consists of one transmitter, one cooperative jammer (CJ), multiple energy receivers…

信息论 · 计算机科学 2018-02-02 Zhengyu Zhu , Zheng Chu , Ning Wang , Zhongyong Wang , Inkyu Lee

Covert communication aims to hide the very existence of wireless transmissions in order to guarantee a strong security in wireless networks. In this work, we examine the possibility and achievable performance of covert communication in…

信息论 · 计算机科学 2024-10-30 Jinsong Hu , Shihao Yan , Xiangyun Zhou , Feng Shu , Jun Li , Jiangzhou Wang