Results 141 to 150 of about 359 (162)
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Secure cooperative untrusted-relay network with outdated CSI
2016 International Wireless Communications and Mobile Computing Conference (IWCMC), 2016This paper studies the secrecy performance of an untrusted amplify-and-forward relaying network where both the relaying and the direct links are used to convey the source's information. Since relays act as eavesdroppers, a source-based jamming technique is proposed to keep the source's message secret from these helper nodes.
Asma Mabrouk +2 more
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Secure Power Allocation of Two-Way Relaying with an Untrusted Denoise-and-Forward Relay
2018 15th International Symposium on Wireless Communication Systems (ISWCS), 2018This paper proposes an secure transmit power allocation (STPA) scheme for a two-way denoise-and-forward (DNF) relaying network with the aim of maximizing the secrecy sum rate of the network. Here, the DNF relay could act not only as a forwarder but also a potential eavesdropper, i.e., an untrusted relay. First, the secure-rate-region of the two sources
Ruifeng Gao +4 more
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Counterfactual quantum cryptography network with untrusted relay
International Journal of Modern Physics B, 2015Counterfactual quantum cryptography allows two remote parties to share a secret key even though a physical particle is not in fact transmitted through the quantum channel. In order to extend the scope of counterfactual quantum cryptography, we use an untrusted relay to construct a multi-user network. The implementation issues are discussed to show that
Chen, Yuanyuan +4 more
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Secure communication using an untrusted relay via sources and channels
2009 IEEE International Symposium on Information Theory, 2009Confidential communication aided by a relay without security clearance is studied. General strategies and outer bounds are derived for the problem of secret communication and secret key generation when correlated observations at all terminals are available.
Milosavljevic, Nebojsa +2 more
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Buffer-Aided Relay Selection for Wireless Cooperative Relay Networks with Untrusted Relays
2021 International Conference on Networking and Network Applications (NaNA), 2021Cheng Zhang +3 more
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2011 18th International Conference on Telecommunications, 2011
Wireless cooperative communication through link adaptation with untrusted relay assignment is considered. Using sharp channel codes in different transmission modes, reliability for destination and security in the presence of untrusted relays are provided through rate and power allocation. Scenarios with single available relay and opportunistic relaying
Hamid Khodakarami, Farshad Lahouti
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Wireless cooperative communication through link adaptation with untrusted relay assignment is considered. Using sharp channel codes in different transmission modes, reliability for destination and security in the presence of untrusted relays are provided through rate and power allocation. Scenarios with single available relay and opportunistic relaying
Hamid Khodakarami, Farshad Lahouti
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Cross-layer security in two-hop wireless Gaussian relay network with untrusted relays
2013 IEEE International Conference on Communications (ICC), 2013This paper deals with the challenge of providing information-theoretic secrecy in a two-hop wireless channel with multiple untrusted relay nodes. Instead of perfect secrecy (in the information-theoretic sense), of interest here is a cross-layer approach where only parts of relayed information are protected at the physical layer against eavesdropping at
Michal Kaliszan +2 more
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Partial Relay Selection for Secure Outdated-CSI AF in Untrusted-Relay Networks
2019 15th International Wireless Communications & Mobile Computing Conference (IWCMC), 2019In this paper, we study secure outdated-channelstate-information amplify-and-forward (SO-CSI-AF) relaying network using partial relay selection method. The best relay node is chosen based on the maximum instantaneous signal-tonoise ratio (SNR) of the first hop.
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Physical-Layer Secret Key Generation With Colluding Untrusted Relays
IEEE Transactions on Wireless Communications, 2016In this paper, we propose a physical-layer secret key generation scheme for multiantenna legitimate nodes with the help of multiple untrusted relays, equipped with multiple antennas. The untrusted relays conform to the relaying transmission protocol of legitimate nodes, but they also eavesdrop the confidential information of an legitimate transmitter ...
Chan Dai Truyen Thai +2 more
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Secure transmission of cognitive untrusted relay networks with selection diversity
2017 9th International Conference on Wireless Communications and Signal Processing (WCSP), 2017In this paper, we investigate the secrecy performance of a cognitive untrusted relay network with a direct link using selection combining (SC) scheme, where a secondary source communicates with a secondary destination through an untrusted relay. We first examine the connection outage probability (COP) and secrecy outage probability (SOP) to investigate
Dechuan Chen +5 more
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