Results 161 to 170 of about 319,021 (219)
Transactions on Emerging Telecommunications TechnologiesThis study investigates the impact of imperfect channel state information (CSI), caused by channel estimation errors and feedback delays, on the physical‐layer security performance of multi‐user relay networks.
Volkan Özduran +2 more
semanticscholar +2 more sources
Secure Transmission with Optimal Power Allocation in Untrusted Relay Networks
IEEE Wireless Communications Letters, 2014 We consider the problem of secure transmission in two-hop amplify-and-forward untrusted relay networks. We analyze the ergodic secrecy capacity (ESC) and present compact expressions for the ESC in the high signal-to-noise ratio regime.
Lifeng Wang +2 more
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China Communications, 2023
To further improve the secrecy rate, a joint optimization scheme for the reconfigurable intelligent surface (RIS) phase shift and the power allocation is proposed in the untrusted relay (UR) networks assisted by the RIS.
L. Gong +4 more
semanticscholar +1 more source
To further improve the secrecy rate, a joint optimization scheme for the reconfigurable intelligent surface (RIS) phase shift and the power allocation is proposed in the untrusted relay (UR) networks assisted by the RIS.
L. Gong +4 more
semanticscholar +1 more source
The multiple access channel with an untrusted relay
2014 IEEE Information Theory Workshop (ITW 2014), 2014This paper considers a Gaussian multiple access channel aided by a relay. Specifically, the relay facilitates communication between multiple sources and a destination to which the sources have no direct link. In this set up, the relay node is considered to be untrusted, i.e., honest but curious, from whom the source messages need to be kept secret.
Ahmed A. Zewail, Aylin Yener
openaire +2 more sources
The role of an untrusted relay in secret communication
2008 IEEE International Symposium on Information Theory, 2008We consider the communication scenario where a source-destination pair wishes to keep the information secret from a relay node despite wanting to enlist its help. A class of relay channels with orthogonal components is considered and an upper bound on the secrecy rate is derived.
Xiang He 0001, Aylin Yener
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Physical Layer Security in Air-To-Underwater Untrusted Relay Networks
Workshop/Conference on Underwater Networks & Systems, 2023In air-to-underwater communications, a two-untrusted-relay transmission scheme is introduced utilizing lossy-forward (LF) relaying. In this setup, two untrusted relays are utilized between an airborne source and an underwater destination for air-to ...
Shen Qian, Xiao-Bo Zhou
semanticscholar +1 more source
Performance Analysis of CR-NOMA Based on Untrusted Relay in IoT
IEEE International Conference on Electronic Information and Communication Technology, 2023Cognitive radio (CR) technology can be used as a key technology for wireless communication to integrate heterogeneous networks, increasing channel capacity and improving spectrum efficiency because secondary users can access to the spectrum of the ...
Zanyang Liang +3 more
semanticscholar +1 more source
Leaking Rate Region to Eavesdroppers and Untrusted Relays
2016 IEEE Global Communications Conference (GLOBECOM), 2016The trustworthiness of nodes in a network is practically a complicated concept and strongly depends on the social relationship among the nodes. For a certain model of trustworthiness, the scheme can be optimized to achieve the highest average secrecy rate based on pre-defined information about possibly malicious nodes.
Chan Dai Truyen Thai +2 more
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Cooperative non-orthogonal relaying for security enhancement in untrusted relay networks
2017 IEEE International Conference on Communications (ICC), 2017Recently, there has been a surge of increased interest in using physical layer security to safeguard the fifth generation (5G) mobile networks. In this paper, we study the problem of secure communications in untrusted relay networks. A new nonorthogonal relaying protocol is proposed, aiming at maximizing the secrecy rate.
Lu Lv +3 more
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STEALTH: Space-Time Encryption via Constellation Hiding for MIMO Two-Way Untrusted Relay Systems
IEEE Internet of Things JournalWe propose a novel physical-layer security (PLS) technique for multiple-input-multiple-output (MIMO) two-way untrusted relay-assisted (TWUR) Internet of Things (IoT) networks by combining constellation-overlapping-based over-the-air encryption (OTAE) and
Ki-Hun Lee, Kiho Lim, B. Jung
semanticscholar +1 more source