Results 81 to 90 of about 590 (182)

Utility Regions for DF Relay in OFDMA-Based Secure Communication with Untrusted Users

, 2017
This letter investigates the utility of a trusted decode-And-forward relay in OFDMA-based secure communication system with untrusted users. For deciding on the use of relay, we first present optimal subcarrier allocation policies for direct communication
De, Swades, Saini, Ravikant,, Saini, Ravikant, Mishra, Deepak,, Mishra, Deepak, Ravikant Saini, Swades De, Deepak Mishra, De, Swades,   +8 more
core   +1 more source

Comprehensive Strategies for Enhancing SD‐WAN: Integrating Security, Dynamic Routing and Quality of Service Management

IET Networks, Volume 14, Issue 1, January/December 2025.
‘Software‐defined wide area networks (SD‐WAN) offer a modern solution to traditional network challenges by integrating advanced routing, enhanced security and quality service management. This paper presents innovative strategies to optimise SD‐WAN deployment, addressing security through IPsec encryption and zero trust frameworks, enhancing connectivity
Raied Ibrahim, Ibrahim Khider, Salaheldin Edam, Twasul Mukhtar   +3 more
wiley   +1 more source

BLOCKVISA: A Blockchain‐Based System for Efficient and Secure Visa, Passport, and Immigration Verification

IET Software, Volume 2025, Issue 1, 2025.
In the fast‐changing landscape of global mobility, the need for secure, efficient, and interoperable visa, passport, and immigration verification systems has never been higher. Traditional systems are inefficient, have security vulnerabilities, and exhibit poor interoperability.
Faraz Masood, Ali Haider Shamsan, Arman Rasool Faridi, Tomasz Górski   +3 more
wiley   +1 more source

Cooperative Interference and Power Allocation in a Bidirectional Untrusted Relay Network With Channel Estimation Errors

IEEE Access, 2018
The secure communication of a two-way untrusted amplify-and-forward relay network under the imperfect channel state information is investigated. To improve the secrecy of the relay wiretap system, artificial noise is introduced into each source signal ...
Lihua Gong, Xiaoxiu Ding, Qibiao Zhu, Nanrun Zhou   +3 more
doaj   +1 more source

Secrecy Rate-Optimum Energy Splitting for an Untrusted and Energy Harvesting Relay Network

IEEE Access, 2018
In this paper, a destination-assisted-jamming-based secure transmission is devised for an untrusted and energy harvesting relay network. In the proposed scheme, both source and destination split their energies into two parts for energy harvesting at the ...
Rugui Yao, Yanan Lu, Theodoros A. Tsiftsis, Nan Qi, Tamer Mekkawy, Fei Xu   +5 more
doaj   +1 more source

Optimal Power Allocation by Imperfect Hardware Analysis in Untrusted Relaying Networks [PDF]

, 2018
CCBY By taking a variety of realistic hardware imperfections into consideration, we propose an optimal power allocation (OPA) strategy to maximize the instantaneous secrecy rate of a cooperative wireless network comprised of a source, a destination and ...
Yeoh, PL, Moradikia, M, Ali Kuhestani, Abbas Mohammadi, Khandaker, MRA, Wong, Kai-Kit, Wong, KK, Mohammadi, Abbas, Kai-Kit Wong, Muhammad R. A. Khandaker, Yeoh, Phee Lep, Phee Lep Yeoh, Khandaker, Muhammad R. A., Mohammadi, A, Moradikia, Majid, Kuhestani, A, Majid Moradikia, Kuhestani, Ali   +17 more
core   +1 more source

Cooperative jamming for energy harvesting multicast networks with an untrusted relay

IET Communications, 2017
Recently, there are increasing requirements of security in wireless communications, especially for the multiuser systems. In this study, the authors consider the security of two‐hop cooperative multicast networks with an untrusted relay. An energy harvesting destination aided cooperative jamming framework is proposed to protect information from being ...
Bingtao He, Jian Chen 0002, Yonghong Kuo, Long Yang 0002   +3 more
openaire   +1 more source

Mixed Relay Placement for Quantum Key Distribution Chain Deployment over Optical Networks

, 2020
Four mixed trusted/untrusted relay placement strategies for quantum key distribution chain deployment over optical networks are proposed, which can improve a security level up to 119% relative to the conventional purely trusted relay ...
Chen, Jiajia,, Yongli Zhao, Zhao, Yongli,, Rui Lin, Jie Zhang, Cao, Yuan,, Zhang, Jie,, Li, Jun, Lin, Rui,, Jun Li, Jiajia Chen, Lin, Rui, Li, Jun,, Zhao, Yongli, Zhang, Jie, Chen, Jiajia, Yuan Cao, Cao, Yuan   +17 more
core   +1 more source

Secure amplify-and-forward untrusted relaying networks using cooperative jamming and zero-forcing cancelation

, 2015
In this paper, we investigate secure transmission in untrusted amplify-and-forward half-duplex relaying networks with the help of cooperative jamming at the destination (CJD). Under the assumption of full channel state information (CSI), conventional CJD
Park, Kihong, Alouini, Mohamed-Slim
core   +1 more source

Source-Based Jamming for Physical-Layer Security on Untrusted Full-Duplex Relay

, 2019
We address the problem of secure wireless communications over an untrusted full-duplex (FD) relay based on the source jamming scheme. The optimal power allocation between the confidential signal and the jamming signal is derived to maximize the secrecy ...
Atapattu, S, Premaratne, M, Jing, Y, Ross, N   +3 more
core   +1 more source