Results 101 to 110 of about 44,680 (304)

Robust Joint Synchronization and Channel Estimation Approach for Frequency-Selective Environments

IEEE Access, 2018
Supporting spontaneous low-latency machine-type communications requires fast synchronization and channel estimation at the receiver. The problems of synchronizing the received frame and estimating the channel coefficients are often addressed separately ...
Bruno Lopes, Silvia Catarino, Nuno M. B. Souto, Rui Dinis, Francisco Cercas   +4 more
doaj   +1 more source

Time synchronization using the Internet [PDF]

IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control, 1998
This paper discusses a new algorithm for synchronizing the clocks of networked computers using messages transmitted over the network itself. The design is based on a statistical model of the clock and the network, and uses this model to define the parameters of a frequency-lock loop which is used to discipline the local oscillator.
openaire   +3 more sources

Soft Mechanical‐Electrical Logic Using Liquid Metal‐Filled 3D‐Printed Architectures

Advanced Engineering Materials, EarlyView.
We present 3D‐printed soft mechanical–electrical logic elements that use liquid metal–filled silicone tubes actuated by thermoplastic polyurethane/polylactic acid (TPU/PLA) architectures to produce Boolean operations. Complementary normally open and normally closed unit cells perform repeatable binary transitions and can be combined into more complex ...
Christoph Lehmann, Ryan Kalgreen, Laura M. Comella   +2 more
wiley   +1 more source

A Framework for Real-time Synchronization in Intelligent Media Generators

, 2004
Recent advances in computer graphics and multimedia technologies have contributed to the development of interactive media-rich systems that generate media elements dynamically in multiple modalities to present information in an effective and appealing ...
Lee, Seung Yong
core  

on maximum-likelihood timing synchronization

, 2007
—In this letter, we address the issue of symbol timing recovery for a coded burst transmission system. As direct maximum-likelihood (ML) estimation is intractable, we resort to the expectation-maximization (EM) algorithm in order to derive a receiver ...
Cédric Herzet, Luc V, Wymeersch, Henk, Herzet, Cedric, Henk Wymeersch, VANDENDORPE, L, Marc Moeneclaey, Moeneclaey, Marc, HERZET, C, Vandendorpe, Luc   +9 more
core   +1 more source

Fermi Timing and Synchronization System [PDF]

, 2006
The Fermi FEL will depend critically on precise timing of its RF, laser and diagnostic subsystems. The timing subsystem to coordinate these functions will need to reliably maintain sub-100fs synchronicity between distant points up to 300m apart in the ...
Staples, J., Kaertner, F. X., Danailov, M., Doolittle, L., Ratti, A., Ilday, F. O., Winter, A., Wilcox, R., Ludwig, F., Ferianis, M., Kaertner, F.X., Kim, J., Chen, J., D'Auria, G., Byrd, J., Ilday, F.O.   +15 more
core   +1 more source

Experimental Characterization and Constitutive Modeling of the Effect of Prior Inelastic Strain on the Viscoplastic Behavior of AD730 at 700 °C

Advanced Engineering Materials, EarlyView.
This study shows that superalloys used in aircraft engine disks become much more prone to deformation at high temperatures if they have been strained during manufacturing. This effect increases with the level of prior strain but eventually reaches a limit.
Fabio Machado Alves da Fonseca, Patrick Villechaise, Malik Durand, Arnaud Longuet, Florent Coudon, Loïc Signor, Julien De Jaeger, Dominique Eyidi, Nathalie Bozzolo, Jonathan Cormier   +9 more
wiley   +1 more source

Optimized Partial Band Preamble and Timing Synchronization Algorithm for Orthogonal Time Frequency Space System

IEEE Access
A novel optimized partial band preamble is designed and the corresponding filtering processing of received signal and the timing synchronization algorithm are also proposed for orthogonal time frequency space (OTFS) systems in high mobility scenarios. To
Wenchao Zhang, Xiaochen Lu, Guangliang Ren, Lirui Shen   +3 more
doaj   +1 more source

Experimental Characterization of Mycelium‐Based Composites Under Multiple Loading Conditions

Advanced Engineering Materials, EarlyView.
This study examines the mechanical response of mycelium‐based composites under compression, shear, and tension using mechanical testing and imaging methods. The comparison between unpressed and hot‐pressed specimens shows that hot pressing is associated with higher compression and shear stiffnesses.
Shaghayegh Elahi, Kimiya Tajik, Harvey Shaw, Matti Isakov, Sami Pajunen, Lauri Rautkari   +5 more
wiley   +1 more source

Clock Estimation for Long-Term Synchronization in Wireless Sensor Networks with Exponential Delays

EURASIP Journal on Advances in Signal Processing, 2007
Although the existing time synchronization protocols in wireless sensor networks (WSNs) are efficient for short periods, many applications require long-term synchronization among the nodes, for example, coordinated sleep and wakeup modes, and ...
Erchin Serpedin, Qasim M. Chaudhari
doaj   +1 more source