Results 11 to 20 of about 164,291 (270)
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
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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 +3 more
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Directing projective modules [PDF]
Archiv der Mathematik, 1993 Let \(A\) be a finite dimensional algebra over a field \(K\). By a module \(M\) we mean a right \(A\)-module of finite length. If \(M_ 1\) and \(M_ 2\) are indecomposable modules, we write \(M_ 1\preceq M_ 2\) if there exists a sequence \(M_ 1=X_ 1\to X_ 2\to \cdots\to X_ m=M_ 2\) of nonisomorphisms between indecomposable modules \(X_ 1,\dots,X_ m ...
Happel, Dieter, Ringel, Claus Michael
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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
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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
Throughput sensitivity to antenna pattern and orientation in 802.11n networks [PDF]
, 2011 In this paper the throughput and packet error rate for an in-home 802.11n network is theoretically derived for two different types of 3x3 antenna configurations.
Halls, DE +4 more
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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
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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
IEEE Access, 2018 In a directional modulation network, a general power iterative (GPI) based beamforming scheme is proposed to maximize the secrecy rate (SR), where there are two optimization variables required to be optimized. The first one is the useful precoding vector
Hai Yu +9 more
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Axionic dark matter signatures in various halo models [PDF]
, 2016 In the present work we study possible time signatures Axion Dark Matter searches employing resonant cavities for various halo models. We study in particular the time dependence of the resonance width (modulation) and possible asymmetries in directional ...
Semertzidis, Y., Vergados, J. D.
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