Results 1 to 10 of about 2,875,016 (292)

Channel Model and Performance Analysis for MIMO Systems with Single Leaky Coaxial Cable in Tunnel Scenarios [PDF]

Sensors, 2022
Due to the limited space in the tunnel environment, multiple-input multiple-output (MIMO) systems with double-port fed leaky coaxial cables (LCXs) can not only reduce the number of LCXs, but also improve the channel capacity.
Kai Zhang, Guoxin Zheng, Hua Wang, Changming Zhang, Xianbin Yu   +4 more
doaj   +2 more sources

A Three-Dimensional Time-Varying Channel Model for THz UAV-Based Dual-Mobility Channels [PDF]

Entropy
Unmanned aerial vehicle (UAV) as an aerial base station or relay device is a promising technology to rapidly provide wireless connectivity to ground device.
Kai Zhang, Fenglei Zhang, Yongjun Li, Xiang Wang, Zhaohui Yang, Yuanhao Liu, Changming Zhang, Xin Li   +7 more
doaj   +2 more sources

Channel Modeling and Optimization of Leaky Coaxial Cable Network in Coal Mine Based on State Transition Method and Particle Swarm Optimization Algorithm

IEEE Access, 2021
As a continuous antenna, the leaky coaxial cable (LCX) is widely used in wireless communication of closed or semi-closed areas such as the subway, mine, tunnel, etc. Usually, LCX networks are required in coal mines.
Yannan Shi, Penglei Qi, Yang Liu, Jinxi Guo, Yiying Wang, Dahu Wang   +5 more
doaj   +1 more source

A Non-Stationary Cluster-Based Channel Model for Low-Altitude Unmanned-Aerial-Vehicle-to-Vehicle Communications

Drones, 2023
Under the framework of sixth-generation (6G) wireless communications, the unmanned aerial vehicle (UAV) plays an irreplaceable role in a number of communication systems.
Zixv Su, Changzhen Li, Wei Chen
doaj   +1 more source

A Three Dimensional MIMO Channel Model for Unmanned Aerial Vehicle in Urban Environments

IEEE Open Journal of the Communications Society, 2021
Increasing the availability of Unmanned Aerial Vehicles (UAV’s) platforms leads to a variety of applications for aerial exploration, surveillance, and transport.
Horacio A. Mendoza, Graciela Corral-Briones   +1 more
doaj   +1 more source

On the Performance of Intelligent Reconfigurable Surfaces for 6G Indoor Visible Light Communications Systems

Photonics, 2023
Indoor visible light communication (VLC) systems have been extensively studied; however, they present some problems when the main propagation channel component, called Line-of-Sight (LoS), is partially or totally blocked.
Milton Román Cañizares, Pablo Palacios Játiva, Javier Guaña-Moya, William Villegas-Ch, Cesar Azurdia-Meza   +4 more
doaj   +1 more source

A Channel Loss Model for THz Networks From 100–600 GHz Considering Both Molecular and Water Vapor Continuum Absorptions

IEEE Open Journal of Vehicular Technology, 2023
6G networks are expected to use the terahertz (THz) frequency spectrum in some way. However, relatively little is known about the transmission channel in this part of the spectrum.
Rafael V. T. Da Nobrega, Thiago R. Raddo, Antonio Jurado-Navas, Murilo B. Loiola, Anderson L. Sanches, Merouane Debbah   +5 more
doaj   +1 more source

A Comprehensive Comparison and Analysis of Several Intensity Modulations Based on the Underwater Photon-Counting Communication System

Frontiers in Physics, 2022
Underwater wireless optical communication is facing absorption, scattering problems, which, in principle, can be greatly resolved by underwater photon-counting communication (UPCC) technology that exhibits high-sensitivity communication characteristics ...
Xiaotian Han, Xiaotian Han, Peng Li, Chang Chang, Duorui Gao, Dongquan Zhang, Peixuan Liao, Wei Wang, Xiaoping Xie, Xiaoping Xie   +9 more
doaj   +1 more source

Phased Array Radar-Based Channel Modeling and Sparse Channel Estimation for an Integrated Radar and Communication System

IEEE Access, 2017
An integrated radar and communication system can cooperatively form a radar-communication network with significantly enhanced efficiency and considerably less occupied hardware resources.
Ling Huang, Yu Zhang, Qingyu Li, Jian Song   +3 more
doaj   +1 more source

Evolution of long water waves in variable channels [PDF]

, 1994
This paper applies two theoretical wave models, namely the generalized channel Boussinesq (gcB) and the channel Korteweg–de Vries (cKdV) models (Teng & Wu 1992) to investigate the evolution, transmission and reflection of long water waves propagating in ...
Teng, Michelle H., Wu, Theodore Y.
core   +1 more source