Results 121 to 130 of about 83,637 (301)

Performance of Coherent OFDM and Differentially Coherent OFDM Communication Systems in Water Pipeline Channels

, 2020
In this work we describe our investigation into the performance of coherent orthogonal frequency division multiplexing (OFDM) and differentially coherent OFDM communication systems in a wideband waveguide channel consisting of a steel pipe filled with ...
Mengdan Wang, Wang, Mengdan, Stojanovic, Milica, Milica Stojanovic, Yu Lu, Ross Murch, Lu, Yu, Liwen Jing, Jing, Liwen, Murch, Ross   +9 more
core   +1 more source

From Lab to Landscape: Environmental Biohybrid Robotics for Ecological Futures

Advanced Robotics Research, EarlyView.
This Perspective explores environmental biohybrid robotics, integrating living tissues, microorganisms, and insects for operation in real‐world ecosystems. It traces the leap from laboratory experiments to forests, wetlands, and urban environments and discusses key challenges, development pathways, and opportunities for ecological monitoring and ...
Miriam Filippi
wiley   +1 more source

Coherent Chaotic Communication Using Generalized Runge–Kutta Method

Mathematics
Computer simulation of continuous chaotic systems is usually performed using numerical methods. The discretization may introduce new properties into finite-difference models compared to their continuous prototypes and can therefore lead to new types of ...
Ivan Babkin, Vyacheslav Rybin, Valery Andreev, Timur Karimov, Denis Butusov   +4 more
doaj   +1 more source

Intelligent Sky Guardians (InSkyGuard): An Aerial Robotic Swarm for Autonomous Detection and Entrapment of Rogue Multirotors

Advanced Robotics Research, EarlyView.
Intelligent Sky Guardians (InSkyGuard) is introduced as a four‐drone swarm that autonomously detects, tracks, and safely captures rogue drones using a coordinated net system. Computer vision and leader–follower control architecture enable synchronized enclosure, while integrated failsafes enhance system reliability. Validated through closed‐environment
Joshua Hastings, Levanya Dewanarayana, Iline Shaju, Haider Al‐Wizni, Sampson Marquis, Weicheng Huang, Pooya Sareh   +6 more
wiley   +1 more source

Free-Space Optical Communication Systems with a Partially Coherent Gaussian Beam and Media Diversity

Terrestrial free-space optical (FSO) communications is an emerging low-license-free and high-bandwidth access solution, albeit hampered by the combined effects from atmospheric loss, turbulence and pointing errors (PEs).
Lee, It Ee
core  

A novel equalizer structure for two-dimensional modulations with coherent demodulation

, 2012
[[abstract]]"A novel equalizer structure capable of correcting channel distortion for two-dimensional modulations with coherent demodulation was presented.
張清濠;Chang, Ching-Haur
core  

Photonic Time Crystals and Time‐Varying Electromagnetic Metamatter: A New Direction for Ultrafast Tunable Photonic and Microwave Materials and Devices

Advanced Science, EarlyView.
Photonic time crystals (PTCs) are systems in which electromagnetic parameters are modulated periodically in time, producing momentum bandgaps via temporal scattering rather than spatial Bragg processes. This review examines the theoretical frameworks, modeling, and computational tools for time‐varying media, and summarizes experimental demonstrations ...
Ranjan Kumar Patel, Shriram Ramanathan, Ronald P. Jenkins, Michael J. Carter   +3 more
wiley   +1 more source

Successive-relaying-aided decode-and-forward coherent versus noncoherent cooperative multicarrier space–time shift keying

, 2013
—Successive-relaying-aided (SR) cooperative multi-carrier (MC) space–time shift keying (STSK) is proposed for frequency-selective channels. We invoke SR to mitigate the typical 50% throughput loss of conventional half-duplex relaying schemes and MC code ...
Li, Li, Chen, Sheng, Kadir, Mohammad Ismat, Hanzo, Lajos   +3 more
core  

Tumor‐Derived LAMB3 Drives Immunosuppressive LRRC15+ Fibroblast Formation During Pancreatic Ductal Adenocarcinoma Development

Advanced Science, EarlyView.
A single‐cell atlas of pancreatic ductal adenocarcinoma development reveals progressive ductal‐fibroblast‐immune crosstalk. Tumor‐derived LAMB3 drives the formation of immunosuppressive LRRC15+ fibroblasts through the ITGB1/FAK/MAPK/FOSL2 signaling. Glycolytic reprogramming upregulates LAMB3 and correlates with LRRC15+ fibroblast enrichment.
Xuqing Shi, Hangqi Liu, Jianru Sun, Xiaoding Liu, Xinping Jv, Longyun Chen, Yuhan Zhang, Hui Zhang, Xudong Xing, Ruiyu Li, Xinyi Ke, Jun Wang, Xianglin Yin, Bohan Liu, Qixian Liu, Yuan Wang, Junliang Lu, Shiyi Liu, Junyi Pang, Yumeng Cai, Menghua Dai, Fan Bai, Huanwen Wu, Zhiyong Liang   +23 more
wiley   +1 more source

Coherent Communication of Continuous Quantum Variables with Linear Optics

, 2007
We provide experimental proposals for coherent communication with linear optics. The first proposal suggests a linear-optical scheme for coherent superdense coding. The second proposal gives a linear-optical coherent teleportation scheme.
Mark M. Wilde, Hari Krovi, Wilde, Mark M., Brun, Todd A., Dowling, Jonathan P., Jonathan P. Dowling, Krovi, Hari, Todd A. Brun   +7 more
core   +1 more source