Results 61 to 70 of about 430,234 (233)

Compute-and-Forward Can Buy Secrecy Cheap

, 2015
We consider a Gaussian multiple access channel with $K$ transmitters, a (intended) receiver and an external eavesdropper. The transmitters wish to reliably communicate with the receiver while concealing their messages from the eavesdropper. This scenario
Babaheidarian, Parisa, Salimi, Somayeh
core   +1 more source

Artificial Noise Injection for Securing Single-Antenna Systems

, 2017
We propose a novel artificial noise (AN) injection scheme for wireless systems over quasi-static fading channels, in which a single-antenna transmitter sends confidential messages to a half-duplex receiver in the presence of an eavesdropper.
He, Biao, Lau, Vincent K. N., She, Yechao   +2 more
core   +2 more sources

A High-Multi Target Resolution Focal Plane Array-Based Laser Detection and Ranging Sensor

Sensors, 2019
This paper introduces a digital-assisted multiple echo detection scheme, which utilizes the waste time of the full serial data readout period in a focal plane array (FPA)-based laser detection and ranging (LADAR) receiver. With the support of an external
Hyeon-June Kim, Eun-Gyu Lee, Choul-Young Kim   +2 more
doaj   +1 more source

Adiabatic quantum state transfer in non-uniform triple-quantum-dot system

, 2010
We introduce an adiabatic quantum state transfer scheme in a non-uniform coupled triple-quantum-dot system. By adiabatically varying the external gate voltage applied on the sender and receiver, the electron can be transferred between them with high ...
A. Messiah, Bing Chen, Wei Fan, Yan Xu
core   +1 more source

Characterisation of the Wind Convection Losses in Plain and Ribbed Tubes of Solar Central Receivers via Tube-Resolved CFD Simulations

SolarPACES Conference Proceedings
Convective losses due to wind affect the thermal efficiency of external central receivers of solar power towers (SPT), but their full characterization is still an unresolved question.
Jose Martín-Martínez, Rafael Pérez-Álvarez, Diego Manuel Martínez-Plaza, Antonio Acosta-Iborra   +3 more
doaj   +1 more source

The short-term effects of antenna insulation thickness on path losses in wireless telemetry implants at microwave frequencies

European Journal of Translational Myology, 2013
Various physiological parameters can be monitored non-invasively using wireless biotelemetry links. The development of sophisticated ultra low power consuming transceivers allows the transmission of large amounts of data from the inside of the body to an
Lukas Kneisz, Michael Schermann, Ewald Unger, Michael Haller, Matthias Krenn, Winfried Mayr   +5 more
doaj   +1 more source

Performances of a GNSS receiver for space-based applications [PDF]

, 2010
Space Vehicle (SV) life span depends on its station keeping capability. Station keeping is the ability of the vehicle to maintain position and orientation. Due to external perturbations, the trajectory of the SV derives from the ideal orbit.
Bousquet, Michel, Boutillon, Emmanuel, Calmettes, Vincent, Dion, Arnaud   +3 more
core  

Custom-Designed Electrically Small Huygens Dipole Antennas Achieve Efficient, Directive Emissions Into Air When Mounted on a High Permittivity Block

IEEE Access, 2019
System-on-Chip (SoC) applications include embedded systems and mobile computing platforms. They will play major roles in fifth generation (5G) wireless systems, notably with the many associated IoT (internet-of-things) devices.
Richard W. Ziolkowski
doaj   +1 more source

Establishment of a nomogram for early risk prediction of severe trauma in primary medical institutions: A multi-center study

Chinese Journal of Traumatology
Purpose: To analyze risk factors for severe trauma and establish a nomogram for early risk prediction, to improve the early identification of severe trauma.
Wang Bo, Ming-Rui Zhang, Gui-Yan Ma, Zhan-Fu Yang, Rui-Ning Lu, Xu-Sheng Zhang, Shao-Guang Liu   +6 more
doaj   +1 more source

Compact, wideband coherent receiver module with 78% external quantum efficiency

Electronics Letters, 1992
A compact, low-profile, front-end module consisting of a fused fibre coupler and a twin pin photodiode for balanced heterodyne receivers is described. Special packaging and mounting techniques ensure excellent performance from a module only 7 mm high.
H. Tabuchi, H. Hamaguchi, T. Mikawa
openaire   +1 more source