Results 101 to 110 of about 191,393 (310)
Advanced Optical Materials, EarlyView.It is demonstrated that in chiral ferroelectric nematic liquid crystals sandwiched between electrically conducting transparent plates, the reflection color can be reversibly tuned by electric fields applied along the helix axis. The proposed theoretical model, assuming field‐induced coiling of the helix axis, accounts for all observations.
Md Sakhawat Hossain Himel +5 more
wiley +1 more source
IEEE AccessMotivated by the evolution of vehicular technologies and applications, the vehicle-to-everything (V2X) communications can be realized by the dedicated short-range communications (DSRC) and cellular V2X (C-V2X) which are undergoing continuous and ...
Shuting Guo +3 more
doaj +1 more source
Grant-free Radio Access IoT Networks: Scalability Analysis in Coexistence Scenarios
, 2017 IoT networks with grant-free radio access, like SigFox and LoRa, offer low-cost durable communications over unlicensed band. These networks are becoming more and more popular due to the ever-increasing need for ultra durable, in terms of battery lifetime,
Azari, Amin +3 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
Information and Telecommunication Sciences, 2020 Background. For multiplying the capacity of a radio link by using multiple antennas at the transmitter and receiver ends, wireless communication networks use the MIMO technique.
Vadim Romanuke
doaj +1 more source
On the Activity Privacy of Blockchain for IoT
, 2019 Security is one of the fundamental challenges in the Internet of Things (IoT) due to the heterogeneity and resource constraints of the IoT devices.
Dorri, Ali +3 more
core +1 more source
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
Bidirectional Deep Learning Decoder for Polar Codes in Flat Fading Channels
IEEE AccessOne of the main issues facing in the future wireless communications is ultra-reliable and low-latency communication. Polar codes are well-suited for such applications, and recent advancements in deep learning have shown promising results in enhancing ...
Md Abdul Aziz +5 more
doaj +1 more source
Downlink Video Streaming for Users Non-Equidistant from Base Station [PDF]
, 2012 We consider multiuser video transmission for users that are non-equidistantly positioned from base station. We propose a greedy algorithm for video streaming in a wireless system with capacity achieving channel coding, that implements the cross-layer ...
Kafedziski, V., Pejoski, S.
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 +4 more
wiley +1 more source