Results 51 to 60 of about 167,608 (323)
Antenna Array Design for Directional Modulation [PDF]
, 2020 Directional modulation (DM) has been applied to linear antenna arrays to increase security of signal transmission. However, only the azimuth angle is considered in the design, due to inherent limitation of the linear array structure, since linear antenna array lacks the ability to scan in the three dimensional (3-D) space.
Zhang, B., Liu, W., Wang, C.
openaire +2 more sources
Directional Modulation via Symbol-Level Precoding: A Way to Enhance Security [PDF]
, 2016 Wireless communication provides a wide coverage at the cost of exposing information to unintended users. As an information-theoretic paradigm, secrecy rate derives bounds for secure transmission when the channel to the eavesdropper is known.
Chatzinotas, Symeon +4 more
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Direct Wimp Detection in Directional Experiments [PDF]
, 2006 The recent WMAP data have confirmed that exotic dark matter together with the vacuum energy (cosmological constant) dominate in the flat Universe. Thus the direct dark matter search, consisting of detecting the recoiling nucleus, is central to particle ...
A. Bottino +3 more
core +2 more sources
On direct sums of Baer modules
Journal of Algebra, 2009 A ring \(R\) is called Baer if the left annihilator of every nonempty subset of \(R\) is generated by an idempotent. In a general module theoretic setting, the concept of a Baer module was defined by the present authors [in Commun. Algebra 32, No. 1, 103-123 (2004; Zbl 1072.16007)] in terms of its endomorphism ring. Indeed, a right \(R\)-module \(M_R\)
Rizvi, S. Tariq, Roman, Cosmin S.
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Magnetic Inelastic Dark Matter: Directional Signals Without a Directional Detector
, 2011 The magnetic inelastic dark matter (MiDM) model, in which dark matter inelastically scatters off nuclei through a magnetic dipole interaction, has previously been shown to reconcile the DAMA/LIBRA annual modulation signal with null results from other ...
Finkbeiner, Douglas P., Lin, Tongyan
core +1 more source
Haldane Quantum Hall Effect for Light in a Dynamically Modulated Array of Resonators [PDF]
, 2015 Topological insulators have attracted abundant attention for a variety of reasons -- notably, the possibility for lossless energy transport through edge states `protected' against disorder.
Minkov, Momchil, Savona, Vincenzo
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SUSY Dark Matter in the Universe- Theoretical Direct Detection Rates
, 2002 Exotic dark matter together with the vacuum energy or cosmological constant seem to dominate in the Universe. An even higher density of such matter seems to be gravitationally trapped in the Galaxy.
A. Bottino +19 more
core +1 more source
Directional Modulation Design Under a Constant Magnitude Constraint for Weight Coefficients
IEEE Access, 2019 Directional modulation (DM) as a physical layer security technique has been studied from many different aspects recently. Normally all existing designs based on antenna arrays lead to varying weight coefficients for different antennas and for different ...
Bo Zhang +4 more
doaj +1 more source
Nonlinearity-induced broadening of resonances in dynamically modulated couplers [PDF]
, 2009 We report the observation of nonlinearity-induced broadening of resonances in dynamically modulated directional couplers. When the refractive index of the guiding channels in the coupler is harmonically modulated along the propagation direction and out ...
A. Szameit +29 more
core +1 more source
Journal of Extracellular Vesicles, 2021 Age‐related macular degeneration (AMD) is a leading cause of blindness worldwide. Drusen are key contributors to the etiology of AMD and the ability to modulate drusen biogenesis could lead to therapeutic strategies to slow or halt AMD progression.
Miguel Flores‐Bellver +17 more
doaj +1 more source