Results 71 to 80 of about 854,563 (301)
Key Issues in Expansion of End-User Mobile Communication in China [PDF]
China’s mobile communications market presents unique market challenges. With a high subscriber growth rate but polarized and stratified consumer adoption trends, an investigation into the current status of this market will improve our understanding on ...
Chong, G., Pau, L-F., Sangwan, S.
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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
IEEE Access, 2019 The conflict between heavy training overhead and large beamforming gain is a bottleneck to deploy millimeter-wave (mmWave) communications for the next-generation wireless networks.
Renmin Zhang +3 more
doaj +1 more source
Secure voice for mobile satellite applications [PDF]
The initial system studies are described which were performed at JPL on secure voice for mobile satellite applications. Some options are examined for adapting existing Secure Telephone Unit III (STU-III) secure telephone equipment for use over a digital ...
Berner, Jeff, Vaisnys, Arvydas
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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
Incorporating Importance Sampling in EM Learning for Sequence Detection in SPAD Underwater OWC
IEEE Access, 2019 In this paper, an importance sampling-based expectation-maximization (EMIS) algorithm is developed for sequence detection in single-photon avalanche diode underwater optical wireless communication (OWC) systems.
Nuo Huang +3 more
doaj +1 more source
mLearning, development and delivery : creating opportunity and enterprise within the HE in FE context [PDF]
, 2008 This research project was funded by ESCalate in 2006-7 to support Somerset College in developing the curriculum, as well as widening participation via the use of mobile communications technologies such as mp3 players and mobile phones.
Glass, Leon, Kelly, Chris, Rose, Stephen
core
Root‐Stimulated Movements in Mimosa Pudica for Biohybrid Robotic Systems
Advanced Robotics Research, EarlyView.This study demonstrates that thermal and electrical stimulation of Mimosa pudica root induces movement of the petiole and pinnules without direct stimulation of the aerial organs, thereby enabling a plant‐based robotic gripper and providing a foundation for the development of intelligent and sustainable systems.
Misao Sato +6 more
wiley +1 more source
IEEE Access, 2019 This paper addresses the performance of downlink beamforming in fog radio access networks (F-RANs) with distributed antennas. The wireless channel is modeled as Rician fading.
Pengcheng Zhu +3 more
doaj +1 more source
LOOPUS Mob-D: System concept for a public mobile satellite system providing integrated digital services for the Northern Hemisphere from an elliptical orbit [PDF]
A new concept for a satellite based public mobile communications system, LOOPUS Mob-D, is introduced, whereby most of the classical problems in mobile satellite systems are approached in a different way.
Horn, P., Kuhlen, H.
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