Results 1 to 10 of about 956 (115)

Energy Consumption Analysis of Beamforming and Cooperative Schemes for Aircraft Wireless Sensor Networks

Applied Sciences, 2020
In this paper, the eight schemes for aircraft wireless sensor networks are investigated, which are single-hop array beamforming schemes (including analog beamforming (ABF), and digital beamforming (DBF)), non-cooperative schemes (including single-hop and
Seung-Hwan Kim, Jae-Woo Kim, Dong-Seong Kim   +2 more
doaj   +3 more sources

Optimal Multi-Antenna Transmission for the Cooperative Non-Orthogonal Multiple-Access System

Applied Sciences, 2021
We investigate the beamforming for the multi antenna cooperative non-orthogonal multiple access (NOMA) system, where an access point (AP) delivers messages for multiple user terminals (UT) with successive interference cancellation (SIC) reception method.
Duckdong Hwang, Janghoon Yang, Sung Sik Nam, Hyoung-Kyu Song   +3 more
doaj   +1 more source

Review of Distributed Beamforming

Journal of Telecommunications and Information Technology, 2023
As the capabilities of individual nodes in wireless sensor networks increase, so does the opportunity to perform more complicated tasks, such as cooperative distributed beamforming to improve the range of communications and save precious battery power ...
Jason Uher, Tadeusz A. Wysocki, Beata J. Wysocki   +2 more
doaj   +1 more source

Research on anti-jamming beamforming with multi-UAV relays [PDF]

ITM Web of Conferences, 2022
As the common means of field emergency communication, the unmanned aerial vehicle (UAV) relay plays an important role in both civil and military fields.
Cheng Ruixia, Tian Yu, Zhu Junwen, Zhang Yiwen   +3 more
doaj   +1 more source

Beamforming Design for Cooperative Intelligent Reflecting Surface-Assisted mmWave Communication

Sensors, 2022
In order to investigate the effect of cooperative Intelligent Reflecting Surface (IRS) in improving spectral efficiency, this paper explores the joint design of active and passive beamforming based on a double IRS-assisted model.
Yuyan Qian, Honggui Deng, Aimin Guo, Haoqi Xiao, Chengzuo Peng, Yinhao Zhang   +5 more
doaj   +1 more source

Cooperative Beamforming With Artificial Noise Injection for Physical-Layer Security

IEEE Access, 2023
In the sixth-generation (6G) communications, how to deploy and manage massively connected Internet-of-Things (IoT) nodes will be one of the key technical challenges, because 6G is expected to provide 10 times higher connection, compared to 5G.
Geunyeong Jang, Donghyeon Kim, In-Ho Lee, Haejoon Jung   +3 more
doaj   +1 more source

Low-Complexity Beamforming Design for a Cooperative Reconfigurable Intelligent Surface-Aided Cell-Free Network

Sensors, 2023
Cell-free (CF) networks are proposed to suppress the interference among collocated cells by deploying several BSs without cell boundaries. Nevertheless, as installing several base stations (BSs) may require high power consumption, cooperative CF networks
Muhammad Zain Siddiqi, Aisha Munir, Syed Agha Hassnain Mohsan, Shashi Shah, Sushank Chaudhary, Paramin Sangwongngam, Lunchakorn Wuttisittikulkij   +6 more
doaj   +1 more source

Optimized Intelligent Design for Smart Systems Hybrid Beamforming and Power Adaptation Algorithms for Sensor Networks Decision-Making Approach

International Journal of Computational Intelligence Systems, 2019
During last two decades, power adaptation and beamforming solutions have been proposed for multiple input multiple output (MIMO) Ad Hoc networks. Game theory based methods such as cooperative and non-cooperative joint beamforming and power control for ...
Ali Kamil Khiarullah, Ufuk Tureli, Didem Kivanc   +2 more
doaj   +1 more source

Joint beamforming and cooperative jamming for secure transmission in multi-antenna decode-and-forward relaying sensor networks: A greedy switching strategy

International Journal of Distributed Sensor Networks, 2017
In wireless sensor networks, sensor nodes are deployed to collect data and deliver the sensed information to a base station in a wireless manner. Due to the broadcast nature of wireless sensor communications, relay-sensor-based secure transmission ...
Zhi Lin, Li Lou, Bin Gao, Fenggang Sun, Yuzhen Huang, Maoqiang Yang, Mingfang Ni   +6 more
doaj   +1 more source

Cooperative beamforming with link‐adaptive regenerative relays

IET Communications, 2021
This paper examines a new beamforming method, and detector for a multi‐relay system is proposed, in which the signals from relays, and direct link are combined to achieve optimal performance.
Hesam Moharrer, Ali Olfat
doaj   +1 more source