Results 61 to 70 of about 334,773 (381)

Jamming Resistant Receivers for Massive MIMO

open access: yes, 2017
We design jamming resistant receivers to enhance the robustness of a massive MIMO uplink channel against jamming. In the pilot phase, we estimate not only the desired channel, but also the jamming channel by exploiting purposely unused pilot sequences ...
Björnson, Emil   +2 more
core   +1 more source

UAV-Enabled Cooperative Jamming for Improving Secrecy of Ground Wiretap Channel [PDF]

open access: yesIEEE Wireless Communications Letters, 2018
This letter proposes a novel unmanned aerial vehicle (UAV)-enabled mobile jamming scheme to improve the secrecy rate of ground wiretap channel. Specifically, a UAV is employed to transmit jamming signals to combat against eavesdropping.
An Li, Qingqing Wu, Rui Zhang
semanticscholar   +1 more source

Packing structure of a two-dimensional granular system through the jamming transition

open access: yes, 2010
We have performed a novel experiment on granular packs composed of automatically swelling particles. By analyzing the Voronoi structure of packs going through the jamming transition, we show that the local configuration of a jamming pack is strikingly ...
Aharonov   +20 more
core   +1 more source

Jamming as a Multicritical Point [PDF]

open access: yesPhysical Review Letters, 2019
Main text: 5 pages, 3 figures; SI text: 10 pages, 9 ...
Olaf Stenull   +3 more
openaire   +4 more sources

Jamming in Systems With Quenched Disorder

open access: yes, 2012
We numerically study the effect of adding quenched disorder in the form of randomly placed pinning sites on jamming transitions in systems that jam at a well defined point J in the clean limit.
Groopman, E.   +3 more
core   +1 more source

CAWE-ACNN Algorithm for Coprime Sensor Array Adaptive Beamforming

open access: yesSensors
This paper presents a robust adaptive beamforming algorithm based on an attention convolutional neural network (ACNN) for coprime sensor arrays, named the CAWE-ACNN algorithm.
Fulai Liu   +5 more
doaj   +1 more source

Irreversible Deposition of Line Segment Mixtures on a Square Lattice: Monte Carlo Study

open access: yes, 1997
We have studied kinetics of random sequential adsorption of mixtures on a square lattice using Monte Carlo method. Mixtures of linear short segments and long segments were deposited with the probability $p$ and $1-p$, respectively.
Bonnier B.   +9 more
core   +2 more sources

A Novel Jamming Attacks Detection Approach Based on Machine Learning for Wireless Communication [PDF]

open access: yesInternational Conference on Information Networking, 2020
Jamming attacks target a wireless network creating an unwanted denial of service. 5G is vulnerable to these attacks despite its resilience prompted by the use of millimeter wave bands.
Youness Arjoune   +4 more
semanticscholar   +1 more source

The simplest model of jamming [PDF]

open access: yesJournal of Physics A: Mathematical and Theoretical, 2016
We study a well known machine learning model -the perceptron- as a simple model of jamming of hard objects. We exhibit two regimes: 1) a convex optimisation regime where jamming is hypostatic and non-critical. 2) a non convex optimisation regime where jamming is isostatic and critical.
Franz, S., Parisi, G.
openaire   +4 more sources

Correlated Jamming in a Joint Source Channel Communication System

open access: yes, 2014
We study correlated jamming in joint source-channel communication systems. An i.i.d. source is to be communicated over a memoryless channel in the presence of a correlated jammer with non-causal knowledge of user transmission.
Budkuley, Amitalok J.   +2 more
core   +1 more source

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