Results 11 to 20 of about 883,994 (287)
Directional Modulation With Cooperative Receivers
IEEE Access, 2018 Directional modulation (DM) refers to a class of efficient techniques for enhancing the physical layer security of wireless communications. However, conventional DM approaches cannot guarantee the transmission security when eavesdroppers are located ...
Yanping Xiao +5 more
doaj +4 more sources
Vector representation of directional modulation transmitters [PDF]
, 2014 Directional Modulation (DM) is a recently proposed technique for securing wireless communication. In this paper we point out that modulation-directionality is a consequence of varying the beamforming network, either in baseband or in the RF stage, at the
Ding, Yuan, Fusco, Vincent; id_orcid
core +6 more sources
Communications in Algebra, 2020 Recently, in a series of papers "simple" versions of direct-injective and direct-projective modules have been investigated. These modules are termed as "simple-direct-injective" and "simple-direct-projective", respectively. In this paper, we give a complete characterization of the aforementioned modules over the ring of integers and over semilocal ...
Buyukasik, Engin +2 more
openaire +5 more sources
Time-Modulated OFDM Directional Modulation Transmitters [PDF]
IEEE Transactions on Vehicular Technology, 2019 In this paper, directional modulation (DM) transmitters, designed for orthogonal frequency-division multiplexing (OFDM) wireless data transfer are proposed using time-modulated arrays. It is shown that by properly designing the switch controlling time sequences the proposed time-modulated OFDM DM systems exhibit promising features, such as 1) requires ...
Yuan Ding 0001 +3 more
openaire +2 more sources
CXCL14 is no direct modulator of CXCR4 [PDF]
FEBS Letters, 2014 C‐X‐C motif chemokine 12/C‐X‐C chemokine receptor type 4 (CXCL12/CXCR4) signaling is involved in ontogenesis, hematopoiesis, immune function and cancer. Recently, the orphan chemokine CXCL14 was reported to inhibit CXCL12‐induced chemotaxis – probably by allosteric modulation of CXCR4.
Otte, Maik +5 more
openaire +2 more sources
Transmitted Data Security in Non-Orthogonal Multiple Access Networks with Directional Modulation Based on User Location [PDF]
International Journal of Information and Communication Technology Research, 2023 In Non-orthogonal multiple access, a user with a weaker channel gain is assigned more power than a user with a stronger channel. This type of power allocation allows the strong user (SU) to apply the successive interference cancellation (SIC) method that
Sepahdar Falsafi, HamidReza Khodadadi
doaj
Network coded modulation for two-way relaying [PDF]
, 2011 Network coding compresses multiple traffic flows with the aid low-complexity algebraic operations, hence holds the potential of significantly improving both the power and bandwidth efficiency of wireless networks.
Chen, Wei +5 more
core +1 more source
New Journal of Physics, 2007 A search technique locating network modules, i.e., internally densely connected groups of nodes in directed networks is introduced by extending the Clique Percolation Method originally proposed for undirected networks. After giving a suitable definition for directed modules we investigate their percolation transition in the Erdos-Renyi graph both ...
Palla, Gergely +4 more
openaire +3 more sources
IEEE Access, 2019 Security has become an extremely important research topic in wireless networks over the last decade, as it is intimately related to both individual privacy and national security.
Feng Shu +4 more
doaj +1 more source
A Leakage-Based Directional Modulation Scheme for Frequency Diverse Array in Robot Swarm Networks
IEEE Access, 2020 Robot swarms, which constitute typical multi-user systems, have played more and more important roles in many areas. In this paper, a directional modulation (DM) scheme for frequency diverse array (FDA) based on the leakage power minimization criterion is
Sheng Ke +3 more
doaj +1 more source