Results 31 to 40 of about 164,291 (270)
Robust Beamforming Design for Secure DM-Based Relay Networks With Self-Sustained Jammers
IEEE Access, 2019 In this paper, we propose to use self-sustained jammers to generate artificial noise with the aim of enhancing the physical layer security of a directional modulation (DM) relay system.
Xiaobo Zhou +4 more
doaj +1 more source
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
Directional modulation‐enhanced retrodirective array [PDF]
Electronics Letters, 2015 Unlike the mathematical techniques adopted in classical cryptographic technology at higher protocol layers, it is shown that characteristics intrinsic to the physical layer can be exploited to secure useful information. It is shown that a retrodirective array can be made to operate more securely by incorporating directional modulation (DM) concepts ...
Ding, Y., Fusco, V.
openaire +3 more sources
Robust Synthesis Scheme for Secure Multi-Beam Directional Modulation in Broadcasting Systems
IEEE Access, 2016 Recently, directional modulation has become an active research area in wireless communications due to its security. Unlike existing research work, we consider a multi-beam directional modulation (MBDM) scenario with imperfect desired direction knowledge.
Feng Shu +4 more
doaj +1 more source
Closed-loop antenna selection for wireless LANs with directional & omni-directional elements [PDF]
, 2011 Throughput and packet error rate are analysed in a home environment for two different 3×3 wireless LAN solutions. A 3×3 EBF approach (using three radio chains) is compared with a reduced cost 2×2 architecture (using two radio chains). In the 2×2 solution
Halls, DE +4 more
core +2 more sources
Circular directional modulation transmitter array [PDF]
IET Microwaves, Antennas & Propagation, 2017 This study proposes for the first time a directional modulation (DM) transmitter constructed using a circular array. The mode patterns, generated with the help of a Fourier transform network, are exploited in order to synthesis information patterns and orthogonal interference patterns, which enable the required DM functionality.
Ding, Yuan +2 more
openaire +3 more sources
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
Transverse Bragg-resonant enhancement of modulation and switching [PDF]
, 2004 We demonstrate theoretically that the electrooptic phase retardation, hence, modulation, can be enhanced very substantially in transverse Bragg resonance (TBR) waveguides.
Choi, John M. +4 more
core +1 more source
A Cooperative Network Coding Strategy for the Interference Relay Channel. [PDF]
, 2012 In this paper, we study an interference relay network with a satellite as relay. We propose a cooperative strategy based on physical layer network coding and superposition modulation decoding for uni-directional communications among users.
Boucheret, Marie-Laure +3 more
core +3 more sources
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