Results 31 to 40 of about 20,570 (58)

Cooperative jamming and power allocation with untrusty two-way relay nodes

open access: yes, 2014
This study investigates the security of the two-way relaying system with untrusty relay nodes. Cooperative jamming schemes are considered for bi-directional secrecy communications.
Xiang, Wei   +4 more
core   +1 more source

Mellin Transform Based Performance Analysis of Fast Frequency Hopping Using Product Combining

open access: yes, 2006
—In this contribution, we analyze the bit error rate (BER) performance of fast frequency hopping (FFH) assisted M-ary frequency shift keying (MFSK) using product combining.
Ahmed, S., Yang, L-L., Hanzo, L.
core   +1 more source

Jamming of elastoviscoplastic fluids in elastic turbulence [PDF]

open access: yes
Elastoviscoplastic (EVP) fluid flows are driven by a non-trivial interplay between the elastic, viscous and plastic properties, which under certain conditions can transition the otherwise laminar flow into complex flow instabilities with rich space–time ...
From, Christopher Soriano; id_orcid   +5 more
core   +2 more sources

Jamming in dense Granular Media

open access: yes, 2006
We review some recent results on Statistical Mechanics approach to dense granular media. In particular, by analytical mean field investigation we derive the phase diagram of a monodisperse system.
M. Pica Ciamarra   +9 more
core   +1 more source

Cooperative jamming and power allocation in three-phase two-way relaying wiretap systems

open access: yes, 2013
The security of the three-phase two-way relaying system with an eavesdropper is investigated in this paper. A cooperative jamming and power allocation scheme is proposed to enhance the system secrecy capacity. When a source node transmits user signals to
Xiang, Wei   +9 more
core   +1 more source

Improvisation jamming, under the COVID cloud

open access: yes, 2023
This film explores the relationship between the free expression of improvised drawing and the intertwined practice of movement and music in what we frame as ‘creative jamming’.
Hubbard, Jenna, Keeley, Adele
core  

GPS Signal Jamming and Anti-jamming Strategy - A Theoretical Analysis

open access: yes, 2016
The weak strength of GPS signal makes it very vulnerable to jamming. This calls for appropriate modeling and implementation of GPS signal source and jammers that are used to jam GPS signal.
Joshi, Divya   +5 more
core   +1 more source

Enhanced monopulse radar tracking using fractional Fourier filtering in the presence of interference [PDF]

open access: yes, 2010
Monopulse radars are used to track a target that appears in the look direction beam width. Significant distortion is produced when manmade high power interference (jamming) is introduced to the radar processor through the radar antenna main lobe (main ...
Elgamel, Sherif A.E.H., Soraghan, J.J.
core   +1 more source

Broadcast anti-jamming systems

open access: yes, 2001
In a traditional anti-jamming system a transmitter who wants to send a signal to a single receiver spreads the signal power over a wide frequency spectrum with the aim of stopping a jammer from blocking the transmission.
Safavi-Naini, Rei   +5 more
core   +1 more source

Performance Evaluation of Distributed-Antenna Communications Systems Using Beam-Hopping

open access: yes, 2005
Digital beamforming (DBF) techniques are capable of improving the performance of communications systems significantly. However, if the transmitted signals are conflicted with strong interference, especially, in the direction of the transmitted beams ...
Yang, L.-L., Zhu, J., Hu, H.
core   +1 more source

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