Results 21 to 30 of about 186,182 (305)
Two Low-Complexity Efficient Beamformers for an IRS- and UAV-Aided Directional Modulation Network
Drones, 2023 As excellent tools for aiding communication, an intelligent reflecting surface (IRS) and an unmanned aerial vehicle (UAV) can extend the coverage area, remove the blind area, and achieve a dramatic rate improvement.
Yeqing Lin +8 more
doaj +1 more source
IEEE Access, 2021 Land mobile satellite communication and physical layer security are considered as the promising paradigms in beyond 5G networks. In this paper, we establish the multi-relay hybrid satellite-terrestrial systems (HSTSs) with artificial noise (AN) to ...
Mengyan Huang +4 more
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Secure MISO-NOMA Transmission With Artificial Noise [PDF]
IEEE Transactions on Vehicular Technology, 2018 This correspondence studies a new secrecy beamforming (SBF) scheme for multiple-input single-output non-orthogonal multiple access (MISO-NOMA) systems. In particular, the proposed SBF scheme efficiently exploits artificial noise to protect the confidential information of two NOMA assisted legitimate users, such that only the eavesdropper's channel is ...
Lu Lv +3 more
openaire +1 more source
Metamodelling techniques for propeller array far-field noise
, 2021 The present paper proposes the development of surrogate models for the description of acoustic emission of multi-propeller configurations, like those adopted by the vast majority of the Urban-Air-Mobility concepts nowadays under investigation.
Gennaretti M. +4 more
core +1 more source
Improving Secrecy for Correlated Main and Wiretap Channels Using Cooperative Jamming
IEEE Access, 2019 To reduce the secrecy loss due to the correlation between main and wiretap channels, this paper introduces a cooperative jamming relay to degrade the reception at the eavesdropper.
Sai Xu +5 more
doaj +1 more source
Artificial neural net based noise cancellor [PDF]
ACE '90. Proceedings of [XVI Annual Convention and Exhibition of the IEEE In India], 2005 This paper presents a new method for noise cancellation with an Artificial Neural Network. The network used is a feedforward one with three layers. The backpropagation and Stastical Cauchy's learning algorithms are employed for adaptation of the internal parameters of the network.
Dash, PK +3 more
openaire +2 more sources
Safeguarding MIMO Communications with Reconfigurable Metasurfaces and Artificial Noise [PDF]
ICC 2021 - IEEE International Conference on Communications, 2021 6 pages, 3 figures, submitted to an IEEE ...
George C. Alexandropoulos +3 more
openaire +3 more sources
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
doaj +1 more source
Entropy, 2017 In this paper, a secure communication model for cognitive multi-user massive multiple-input multiple-output (MIMO) systems with underlay spectrum sharing is investigated.
Hayder Al-Hraishawi +2 more
doaj +1 more source
Wavelet—Artificial Neural Network Receiver for Indoor Optical Wireless Communications [PDF]
, 2011 The multipath induced intersymbol interference (ISI) and fluorescent light interference (FLI) are the two most important system impairments that affect the performance of indoor optical wireless communication (OWC) systems.
Ghassemlooy, Zabih +5 more
core +1 more source