Results 51 to 60 of about 411,124 (224)

Machine Learning‐Assisted Design and Performance Prediction of a Compact Dual‐Band Polarization‐Insensitive THz Metamaterial Absorber for Skin‐Cancer‐Related Refractive‐Index Sensing

Advanced Electronic Materials, EarlyView.
A compact QASRR‐based THz metamaterial absorber enables polarization‐insensitive dual‐band absorption and skin‐cancer‐related refractive‐index sensing through measurable resonance shifts. Field, surface‐current, and circuit analyses clarify the dual‐resonance mechanism, while StackNet‐assisted prediction accurately estimates the simulated absorption ...
Md. Murad Kabir Nipun, S. M. Rifatur Rana, Md. Golam Morshed, Imrose Jahan, F. A. Sabbir Ahamed, Md. Jahedul Islam   +5 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

Broadband Near‐Field Computational Microwave Imaging Enabled by Nonperiodic Dispersive Unit‐Cell Loading in a Passive Metasurface

Advanced Electronic Materials, EarlyView.
A compact passive engineered surface converts changes in microwave frequency into many distinct illumination patterns, allowing nearby objects to be imaged without mechanical scanning, active tuning, or a large antenna array. Operating from 18 to 28 GHz, the single‐port system uses measured field patterns to reconstruct metallic targets and distinguish
Mohammed H. Arif, Firas Slewa Dawod, Henrik Jansen, Caner Kadıoğlu, Sayan Roy, Dirk Heberling, Renato Negra   +6 more
wiley   +1 more source

Capacity limits of MIMO channels with co-channel interference [PDF]

, 2004
We consider both analytically and via Monte Carlo simulation the variation of the information theoretic capacity of multiple-input, multiple output (MIMO) communication systems.
Nix, AR, Webb, MW, Beach, MA
core   +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

Analysis and Design of Channel Estimation in Multicell Multiuser MIMO OFDM Systems [PDF]

, 2014
This paper investigates the uplink transmission in multicell multiuser multiple-input multiple-output (MIMO) orthogonal frequency-division multiplexing (OFDM) systems. The system model considers imperfect channel estimation, pilot contamination (PC), and
Xu, Peng, Qi, Feng, Wang, Jinkuan, Wang, Jiangzhou   +3 more
core   +1 more source

A High Isolation MIMO Antenna without Decoupling Structure for LTE 700 MHz

International Journal of Antennas and Propagation, 2015
This paper presents a long-term evolution (LTE) 700 MHz band multiple-input-multiple-output (MIMO) antenna, and high isolation between the two symmetrical antenna elements is obtained without introducing extra decoupling structure.
Yanjie Wu, Yunliang Long
doaj   +1 more source

Parallel Vector Processing in Optical Computing With Jacobi Time‐Wave Packets

Laser &Photonics Reviews, EarlyView.
Functionality of a single neuron and state of the art photonic acceleration with a Mach‐Zehnder‐interferometer (MZI) mesh (i), a crossbar array (ii) and a micro ring resonator (MRR) array (iii). In the proposed Jacobi time‐wave packet approach (iv) a single modulator (here a ring modulator) is performing the whole scalar vector product in a single ...
Janosch Meier, Khaleda Mallick, Abhinand Venugopalan, Milind Bagul, Gouri Krishnan, Thomas Schneider   +5 more
wiley   +1 more source

Design and Analysis of UWB MIMO Antenna for Smart Fabric Communications

International Journal of Antennas and Propagation, 2022
This paper presents a flexible multiple-input, multiple-output (MIMO) antenna with ultrawideband (UWB) performance for smart clothing applications. The MIMO antenna is comprised of four octagonal-shaped radiators with several slots loaded into them, and ...
Thennarasi Govindan, Sandeep Kumar Palaniswamy, Malathi Kanagasabai, Sachin Kumar   +3 more
doaj   +1 more source

Optimized Super-Wideband MIMO Antenna with High Isolation for IoT Applications

Micromachines, 2022
A compact, low profile, multiple-input–multiple-output (MIMO) diversity antenna with super-wideband (SWB) characteristics has been proposed. The proposed antenna comprises four symmetric monopole-radiating elements printed on low-cost FR4 substrate with ...
Adnan Khurshid, Jian Dong, Mir Swad Ahmad, Ronghua Shi   +3 more
doaj   +1 more source