Results 71 to 80 of about 109,418 (318)

Naphthyridine‐Based Donor–Acceptor Boron Difluoride Complexes Targeting Red Emission in Organic Light‐Emitting Diodes

Advanced Optical Materials, EarlyView.
Four donor–acceptor boron difluoride complexes based on triphenylamine donor and a naphthyridine acceptor units were synthesized, studied, and applied as OLED emitters. They exhibit pronounced intramolecular charge transfer character, balanced charge transport properties, and tunable emission. Near‐unity PLQYs are achieved for selected compounds, while
Omar Lahna, Stepan Kutsiy, Dmytro Volyniuk, Roman Luboradzki, Elina Andresen, Ute Resch‐Genger, Juozas V. Grazulevicius, Pavlo Stakhira, Mykhaylo A. Potopnyk   +8 more
wiley   +1 more source

Optimized Full-Duplex MIMO DF Relaying With Limited Dynamic Range

IEEE Access, 2017
This paper investigates the transceiver optimization of full-duplex multiple-input multipleoutput decode-and-forward (DF) relaying by taking into account the practical factor of limited dynamic range (LDR).
Hong Shen, Cichong Liu, Wei Xu, Chunming Zhao   +3 more
doaj   +1 more source

Novel antenna configurations for wireless broadband vehicular communications [PDF]

, 2010
In this paper, mobile WiMAX trials are analysed to investigate the vehicular down-link performance for a number of on-car antenna configurations. The directionality and optimum polarization of the vehicular antennas are shown to improve both the range ...
Nix, AR, Andrew Nix, George Zaggoulos, David Halls, Zaggoulos, G, Halls, DE   +5 more
core   +1 more source

Toward Wireless Implantable Robotic Systems Driven by Magnetic Field for Personalized Therapy

Advanced Robotics Research, EarlyView.
Robotic materials are playing an increasingly vital role in enabling sensing and actuation at small scales. This perspective highlights recent advances in magnetic materials and magnetically actuated devices for wireless sensing, actuation, and energy harvesting toward implantable robotic systems for closed‐loop therapy.
Yusheng Wang, Ruijian Ge, Xiaoguang Dong
wiley   +1 more source

A Pilot Allocation Algorithm Based on Coalitional Game Theory for Distributed MIMO Systems

IEEE Access, 2019
With the advent of the 5G era, the number of user terminals has increased dramatically. However, the limitation of pilot resources results in pilot reuse among user terminals, which makes the performance of massive multiple-input-multiple-output (MIMO ...
Pengcheng Zhu, Jialong Bao, Lingling Zhang, Jiamin Li   +3 more
doaj   +1 more source

A Privacy-Aware Crowd Management System for Smart Cities and Smart Buildings

IEEE Access, 2020
Cities are growing at a dizzying pace and they require improved methods to manage crowded areas. Crowd management stands for the decisions and actions taken to supervise and control densely populated spaces and it involves multiple challenges, from ...
Juan Ramon Santana, Luis Sanchez, Pablo Sotres, Jorge Lanza, Tomas Llorente, Luis Munoz   +5 more
doaj   +1 more source

WLAN/WDS performance using directive antennas in highly mobile scenarios: experimental results [PDF]

, 2008
This paper presents experimental results from a series of IEEE 802.11g studies to investigate the performance of vehicular to roadside wireless communications. In particular, two high-gain omni-directional antennas were used at the roadside access point,
Nix, AR, Andrew Nix, George Zaggoulos, Zaggoulos, G   +3 more
core   +1 more source

Improving the Robustness of Visual Teach‐and‐Repeat Navigation Using Drift Error Correction and Event‐Based Vision for Low‐Light Environments

Advanced Robotics Research, EarlyView.
Visual teach‐and‐repeat (VTR) navigation allows robots to learn and follow routes without building a full metric map. We show that navigation accuracy for VTR can be improved by integrating a topological map with error‐drift correction based on stereo vision.
Fuhai Ling, Ze Huang, Tony J. Prescott
wiley   +1 more source

A new stochastic spatio-temporal propagation model (SSTPM) for mobile communications with antenna arrays [PDF]

, 2001
In order to evaluate the performance of third-generation mobile communication systems, radio channel models are required. The models should be capable of handling nonstationary scenarios with dynamic evolution of multipath. In this context and due to the
Piechocki, RJ, Tsoulos, G, McGeehan, JP
core   +1 more source

Waveguide Photoactuators: Materials, Fabrication, and Applications

Advanced Robotics Research, EarlyView.
Waveguide photoactuators convert guided light into mechanical motion. Their tethered‐flexible design enables minimally invasive surgery and confined‐space robotics. This review aims to guide materials selection, device design, and system integration, accelerating the transition of waveguide photoactuators from laboratory prototypes to versatile ...
Minjie Xi, Hemin Pan, Yang Zong, Yongfeng Mei, Jizhai Cui   +4 more
wiley   +1 more source