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This work considers a multi-user massive multiple-input multiple-output (MU-mMIMO) Internet-of-Things (IoT) system, where multiple unmanned aerial vehicles (UAVs) operating as decode-and-forward (DF) relays connect the base station (BS) to…

信息论 · 计算机科学 2024-04-05 Mobeen Mahmood , Yicheng Yuan , Tho Le-Ngoc

We have evaluated the optimal secrecy rate for Amplify-and-Forward (AF) relay networks with multiple eavesdroppers. Assuming i.i.d. Gaussian noise at the destination and the eavesdroppers, we have devised technique to calculate optimal…

信息论 · 计算机科学 2014-06-02 Siddhartha Sarma , Samar Agnihotri , Joy Kuri

Unmanned aerial vehicles (UAVs) have emerged as a promising solution to provide wireless data access for ground users in various applications (e.g., in emergence situations). This paper considers a UAV-enabled wireless network, in which…

信息论 · 计算机科学 2019-03-21 Peiming Li , Jie Xu

In this letter, we investigate an unmanned aerial vehicle (UAV) communication system, where an intelligent reflecting surface (IRS) is deployed to assist in the transmission from a ground node (GN) to the UAV in the presence of a jammer. We…

信号处理 · 电气工程与系统科学 2022-01-17 Zhi Ji , Wendong Yang , Xinrong Guan , Xiao Zhao , Guoxin Li , Qingqing Wu

Unmanned aerial vehicles (UAVs) can provide wireless access to terrestrial users, regardless of geographical constraints, and will be an important part of future communication systems. In this paper, a multi-user downlink dual-UAVs enabled…

信息论 · 计算机科学 2023-10-24 Hongjiang Lei , Jiacheng Jiang , Imran Shafique Ansari , Gaofeng Pan , Mohamed-Slim Alouini

In this paper, we investigate the resource allocation design for multicarrier (MC) systems employing a solar powered unmanned aerial vehicle (UAV) for providing communication services to multiple downlink users. We study the joint design of…

信息论 · 计算机科学 2018-01-23 Yan Sun , Derrick Wing Kwan Ng , Dongfang Xu , Linglong Dai , Robert Schober

In keeping with the rapid development of communication technology, a new communication structure is required in a next-generation communication system. In particular, research using High Altitude Platform (HAP) or Unmanned Aerial…

系统与控制 · 电气工程与系统科学 2021-10-19 Hyunsoo Lee , Haemin Lee , Soyi Jung , Joongheon Kim

This letter proposes a novel relaying framework, semantic-forward (SF), for cooperative communications towards the sixth-generation (6G) wireless networks. The SF relay extracts and transmits the semantic features, which reduces forwarding…

网络与互联网体系结构 · 计算机科学 2024-01-15 Wensheng Lin , Yuna Yan , Lixin Li , Zhu Han , Tad Matsumoto

Recent years have witnessed increasingly more uses of Unmanned Aerial Vehicle (UAV) swarms for rapidly providing wireless coverage to ground users. Each UAV is constrained in its energy storage and wireless coverage, and it consumes most…

网络与互联网体系结构 · 计算机科学 2021-09-01 Xiao Zhang , Lingjie Duan

Unmanned aerial vehicle (UAV) communication is of crucial importance in realizing heterogeneous practical wireless application scenarios. However, the densely populated users and diverse services with high data rate demands has triggered an…

信号处理 · 电气工程与系统科学 2025-07-24 Rui Ding , Fuhui Zhou , Yuhang Wu , Qihui Wu , Tony Q. S. Quek

We study in this paper a two-hop relaying network consisting of one source, one destination, and three amplify-and-forward (AF) relays operating in a half-duplex mode. In order to compensate for the inherent loss of capacity pre-log factor…

信息论 · 计算机科学 2012-07-17 Ki-Hong Park , Mohamed-Slim Alouini

Unmanned aerial vehicle (UAV) has been widely adopted in wireless systems due to its flexibility, mobility, and agility. Nevertheless, a limited onboard battery greatly hinders UAV to prolong the serving time from communication tasks that…

信息论 · 计算机科学 2020-11-19 Hieu Tran-Dinh , Sumit Gautam , Symeon Chatzinotas , Bjorn Ottersten

This paper considers a multiple input multiple output (MIMO) two-way relay channel, where two nodes want to exchange data with each other using multiple relays. An iterative algorithm is proposed to achieve the optimal achievable rate…

信息论 · 计算机科学 2008-10-22 Rahul Vaze , Robert W. Heath

This paper proposes a distributed multiple relay selection scheme to maximize the satisfaction experiences of unmanned aerial vehicles (UAV) communication networks. The multi-radio and multi-channel (MRMC) UAV communication system is…

网络与互联网体系结构 · 计算机科学 2018-05-23 Dianxiong Liu , Yuhua Xu , Yitao Xu , Qihui Wu , Jianjun Jing , Yuanhui Zhang , Alagan Anpalagan

The real-time unmanned aerial vehicle (UAV) trajectory design of secure integrated sensing and communication (ISAC) is optimized. In particular, the UAV serves both as a downlink transmitter and a radar receiver. The legitimate user (Bob)…

信号处理 · 电气工程与系统科学 2023-06-27 Jun Wu , Weijie Yuan , Lajos Hanzo

Recently, Unmanned Aerial Vehicle (UAV) based communications systems have attracted increasing research and commercial interest due to their cost effective deployment and ease of mobility.During natural disasters and emergencies, such…

网络与互联网体系结构 · 计算机科学 2021-06-03 Sai Teja Suggala , Siddhartha Pothukuchi , Naimat Ali Khan

In this paper, we study an unmanned aerial vehicle (UAV) communication system, where a ground node (GN) communicate with a UAV assisted by intelligent reflecting surface (IRS) in the presence of a jammer with imperfect location information.…

信息论 · 计算机科学 2022-01-25 Zhi Ji , Xinrong Guan , Jia Tu , Qingqing Wu , Wendong Yang

In this paper, we consider unmanned aerial vehicles (UAVs) assisted cellular communication system, where UAVs can be used as amplify-and-forward (AF) relays. The effective channel with UAV assisted communication can be modeled as a Rayleigh…

信息论 · 计算机科学 2018-06-28 Sha Hu , Jose Flordelis , Fredrik Rusek , Ove Edfors

One of the main problems in mobile communication systems is the degradation of Radio Frequency (RF) connection when mobile user is far from base station. One way to solve this problem is to increase the transmitter power, but the mobile…

信号处理 · 电气工程与系统科学 2018-11-21 Mohammad Ali Amirabadi

In commercial unmanned aerial vehicle (UAV) applications, one of the main restrictions is UAVs' limited battery endurance when executing persistent tasks. With the mature of wireless power transfer (WPT) technologies, by leveraging ground…

计算机科学与博弈论 · 计算机科学 2023-08-24 Yuntao Wang , Zhou Su