Results 141 to 150 of about 590 (182)

Improving free-space continuous variable quantum key distribution with adaptive optics. [PDF]

Sci Rep
Sayat MT, Birch M, Copeland M, Jager E, Thearle O, Bennet F, Lam PK, Rattenbury NJ, Cater JE.   +8 more
europepmc   +1 more source

Secure Relaying Equalization against an Untrusted Relay Node in Amplify-and-Forward Relaying Networks

Journal of the Korea Academia-Industrial cooperation Society
openaire   +1 more source

Multi-terminal networks with an untrusted relay

2014 52nd Annual Allerton Conference on Communication, Control, and Computing (Allerton), 2014
This paper investigates the impact of cooperation with an untrusted relay in multi-source multi-destination networks. The set up considered is one where the relay is the only means of communications due to the absence of direct links between the sources and the destinations.
Ahmed A. Zewail, Mohamed S. Nafea, Aylin Yener   +2 more
openaire   +3 more sources

The Symmetric Two-Hop Channel with an Untrusted Relay

2018 International Symposium on Information Theory and Its Applications (ISITA), 2018
We study, using information-theoretic security methods, the so-called symmetric two-hop channel with an untrusted relay. In this model, a source wants to send its message reliably and securely to the destination through an honest but curious relay. The relay acts as a passive eavesdropper.
Shahab Ghasemi-Goojani, Panagiotis Papadimitratos   +1 more
openaire   +2 more sources

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Opportunistic Transmission of Nonregenerative Network With Untrusted Relay

IEEE Transactions on Vehicular Technology, 2015
In this paper, we consider an opportunistic transmission scheme of nonregenerative relay networks consisting of a source, a destination, and an untrusted relay, where the relay has a different security clearance from the source–destination pair. In this network, the information is transmitted through the direct link if the secrecy rate of the direct ...
Minchul Ju, Dohoon Kim, Kyu-Sung Hwang   +2 more
exaly   +2 more sources

Relay Selection for Secure Successive AF Relaying Networks With Untrusted Nodes

IEEE Transactions on Information Forensics and Security, 2016
In this paper, the security aspect of an amplify-and-forward relaying network with untrusted relay nodes is considered. The untrusted nodes can help to forward the received signal and they may also try to decode such information, which can be regarded as potential eavesdroppers (Eves). To deal with such a challenging issue, a successive relaying scheme
Kah Chan Teh, Kwok Hung Li
exaly   +2 more sources

Secure Cooperative Communications With an Untrusted Relay: A NOMA-Inspired Jamming and Relaying Approach

IEEE Transactions on Information Forensics and Security, 2019
We propose a novel non-orthogonal multiple access (NOMA)-inspired jamming and relaying scheme to enhance the physical layer security of untrusted relay networks. Particularly, during the first phase, with the application of the downlink NOMA principle, the source sends a superimposed version of a desired signal and a jamming signal, where the jamming ...
Lu Lv, Fuhui Zhou, Naofal Al-Dhahir
exaly   +2 more sources

Secure Relay Selection for Two Way Amplify-and-Forward Untrusted Relaying Networks

IEEE Transactions on Vehicular Technology, 2018
Relay assisted communication helps to extend the transmission coverage area. In more realistic scenarios, the available relays are untrusted, which try to decode the confidential signals during their main relaying function. Thus, these untrusted relays are regarded as potential eavesdroppers, and the confidential signals are vulnerable.
Tamer Mekkawy, Rugui Yao, Nan Qi
exaly   +2 more sources