Results 51 to 60 of about 15,536 (231)

A Compact WiMAX Band-Notched UWB MIMO Antenna with High Isolation [PDF]

Radioengineering, 2018
A multiple-input-multiple-output (MIMO) antenna is proposed for ultra-wideband (UWB) applications with high isolation capability. The proposed MIMO structure consists of two simple square monopole antennas with slotted ground plane structure with S11 ...
B. Azarm, J. Nourinia, Ch. Ghobadi, M. Majidzadeh, N. Hatami   +4 more
doaj  

Analysis of a distributed MIMO channel capacity under a special scenario

EURASIP Journal on Wireless Communications and Networking, 2019
A distributed antenna system enhances the coverage performance of a system by distributing the antennas geographically, as well as by improving the diversity gain and capacity performance.
Xiaonan Zhao, Pengzhen Jia, Qianwen Zhang, Yupeng Li, Ruiqing Xing, Yuan Liu   +5 more
doaj   +1 more source

Application of dynamic modelling and model‐based predictive control to enhance a cooling tower

The Canadian Journal of Chemical Engineering, EarlyView.
Model predictive control (MPC) applied to improve the operation of cooling towers. Abstract Model predictive control (MPC) differs from traditional feedback control by making predictions within a time horizon, providing better control actions for the process.
Douglas de Almeida Giardini, Adriana Guglielmi Ranieri Miranda, Wilson Hideki Hirota, Bruno Faccini Santoro, José Ermirio Ferreira de Moraes   +4 more
wiley   +1 more source

MIMO Antennas for Smart 5G Devices

IEEE Access, 2018
This paper presents the design of $8 \times 8$ multiple-input multiple-output (MIMO) antennas for future 5G devices, such as smart watches and dongles.
Nosherwan Shoaib, Sultan Shoaib, Riqza Y. Khattak, Imran Shoaib, Xiaodong Chen, Aqib Perwaiz   +5 more
doaj   +1 more source

Review of millimeter‐wave and terahertz near‐field synthetic aperture radar imaging technology

InfoScience, EarlyView.
Abstract This paper comprehensively reviews the development of millimeter‐wave (MMW) and terahertz (THz) near‐field imaging technologies, with an emphasis on the state of synthetic aperture radar (SAR)‐based imaging technologies. Near‐field imaging technologies are categorized into passive and active imaging modes, among which active imaging is favored
Qi Yang, Hongqiang Wang, Xu Chen, Xin Peng   +3 more
wiley   +1 more source

Modeling of wide-band MIMO radio channels based on NLoS indoor measurements [PDF]

, 2004
In this paper, we first verify a previously proposed Kronecker-structure-based narrow-band model for nonline-of-sight (NLoS) indoor multiple-input-multiple-output (MIMO) radio channels based on 5.2-GHz indoor MIMO channel measurements.
OTTERSTEN, Björn, Bengtsson, Mats,, Peter Karlsson, Yu, K, Bengtsson, B, Karlsson, P, Kai Yu, Beach, Mark, Karlsson, Peter,, Darren Mcnamara, Björn Ottersten, McNamara, Darren,, Mark Beach, Mats Bengtsson, Ottersten, Björn,, Yu, Kai, Karlsson, Peter, McNamara, DP, Yu, Kai,, Beach, Marc,, Ottersten, P, McNamara, Darren, Student Member, Beach, MA, Bengtsson, Mats   +24 more
core   +1 more source

Sliding Mode Control in Aerospace Applications: A Survey

International Journal of Robust and Nonlinear Control, EarlyView.
ABSTRACT Sliding mode control (SMC) enjoys robustness to matched and unmatched (in the case of minimum phase input‐output dynamics) bounded perturbations, and finite time convergence. Second‐order and higher‐order sliding mode control systems (2‐SMC/HOSMC) retain all the advantages of sliding mode control, but in addition can be applied to systems of ...
Yuri Shtessel, Christopher Edwards
wiley   +1 more source

Transmit Diversity Assisted Space Shift Keying for Colocated and Distributed/Cooperative MIMO Elements [PDF]

, 2011
Space Shift Keying (SSK) modulation is a recently proposed MIMO technique, which activates only a single transmit antenna during each time slot and uses the specific index of the activated transmit antenna to implicitly convey information.
Yang, Lie-Liang, Lie-Liang Yang, Chao Xu, Du Yang, Yang, Du, Xu, Chao, Hanzo, Lajos, Lajos Hanzo   +7 more
core   +1 more source

Antenna Impedance Estimation at MIMO Receivers

CoRR, 2022
This paper considers antenna impedance estimation based on training sequences at MIMO receivers. The goal is to firstly leverage extensive resources available in most wireless systems for channel estimation to estimate antenna impedance in real-time. We assume the receiver switches its impedance in a predetermined fashion during each training sequence.
Shaohan Wu, Brian L. Hughes
openaire   +2 more sources

Integrated LEO Constellation and In‐Cabin Distribution System for Continuous Aircraft 5G Connectivity

International Journal of Satellite Communications and Networking, EarlyView.
ABSTRACT The integration of low Earth orbit (LEO) satellite constellations with commercial aircraft communication systems presents critical challenges in maintaining continuous connectivity during dynamic flight conditions. Current geostationary satellite systems suffer from high round‐trip latency (>$$ > $$ 500 ms) and inadequate coverage at high ...
Raúl Parada, Victor Monzon Baeza, Carlos Horcajo Fernández de Gamboa, Rocío Serrano Camacho, Carlos Monzo   +4 more
wiley   +1 more source