Results 161 to 170 of about 590 (182)
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Secure OFDM transmission in wireless networks with untrusted relays
2017 9th International Conference on Wireless Communications and Signal Processing (WCSP), 2017Physical layer security is becoming a promising technology to face the security challenges of diversified and rapidly-growing wireless applications. In this paper, we propose a three-hop secure Orthogonal Frequency Division Multiplexing (OFDM) transmission protocol for the wireless networks with untrusted relays.
Qiuli Dong, Guobing Li
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Physical-layer secret key generation with untrusted relays
2014 IEEE Globecom Workshops (GC Wkshps), 2014In this paper, we propose a physical-layer secret key generation scheme for multi-antenna legitimate nodes with the help from multiple untrusted relays with single antenna. The relays' actions conform to the rules but they passively eavesdrop the information.
Chan Dai Truyen Thai +3 more
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Characterization of untrusted relaying networks in the presence of an adversary jammer
Wireless Networks, 2019By considering an adversary jammer in a communication network, we investigate the secrecy performance of a cooperative wireless network comprised of a source, a destination and an untrusted amplify-and-forward relay. We assume that either the source or the destination, as well as the jammer are equipped with large-scale multiple antennas systems, while
Hamed Saedi +2 more
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Secure cooperative untrusted-relay network with outdated CSI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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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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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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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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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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Exploiting Adaptive Jamming in Secure Cooperative NOMA with an Untrusted Relay
ICC 2019 - 2019 IEEE International Conference on Communications (ICC), 2019We study secure communications with an untrusted relay for a cooperative non-orthogonal multiple access (NOMA) system, where a base station (BS) serves a near user (NU) and a far user (FU) by the NOMA principle, and transmission between BS and FU is aided by an untrusted relay.
Lu Lv +4 more
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