Results 41 to 50 of about 970 (154)

Secrecy performance analysis on cooperative CR-NOMA network

Tongxin xuebao, 2020
In order to improve the secrecy performance of communication system and make efficient use of limited spectrum,overlay cognitive radio (OCR) technology was combined with non-orthogonal multiple access (NOMA) technology and the communication model was ...
Zhen YANG, Mengyao ZHU, Youhong FENG
doaj  

Secure Transmission in mmWave NOMA Networks With Cognitive Power Allocation

IEEE Access, 2019
Millimeter wave (mmWave) and non-orthogonal multiple access (NOMA) are two key technologies for future wireless networks. In this paper, secure communication in mmWave NOMA networks based on cognitive power allocation scheme is studied by preferentially ...
Yi Song, Weiwei Yang, Zhongwu Xiang, Biao Wang, Yueming Cai   +4 more
doaj   +1 more source

Implications of Coding Layers on Physical-Layer Security: A Secrecy Benefit Approach

Entropy, 2019
In this work, we consider the pros and cons of using various layers of keyless coding to achieve secure and reliable communication over the Gaussian wiretap channel. We define a new approach to information theoretic security, called practical secrecy and
Willie K. Harrison, Elise Beard, Scott Dye, Erin Holmes, Kaela Nelson, Marco A. C. Gomes, João P. Vilela   +6 more
doaj   +1 more source

Physical-Layer Security in Mixed UOWC-RF Networks With Energy Harvesting Relay Against Multiple Eavesdroppers

IEEE Open Journal of the Communications Society
In this study, physical layer security (PLS) in a dual-hop underwater optical wireless communication (UOWC)-radio frequency (RF) network under the intruding attempts of multiple eavesdroppers via RF links is considered. An intermediate decode-and-forward
Moloy Kumar Ghosh, Milton Kumar Kundu, MD. Ibrahim, A. S. M. Badrudduza, MD. Shamim Anower, Imran Shafique Ansari, Annie Solomon, Sumit Chakravarty, Imtiaz Ahmed, Heejung Yu   +9 more
doaj   +1 more source

Optimal Access Scheme for Security Provisioning of C-V2X Computation Offloading Network With Imperfect CSI

IEEE Access, 2020
In a cellular vehicle-to-everything (C-V2X) enabled computation-offloading network, vehicular users may deliver computation tasks to a cellular base station (BS) through vehicle-to-infrastructure (V2I) transmission links in order to accommodate ...
Bin Qiu, Hailin Xiao, Anthony Theodore Chronopoulos, Di Zhou, Shan Ouyang   +4 more
doaj   +1 more source

Energy-Efficient Secure Transmission Design for the Internet of Things With an Untrusted Relay

IEEE Access, 2018
In this paper, we investigate secure uplink transmission in a typical Internet of Things (IoT) deployment, where multiple sensors communicate with a controller via the assistance of an untrusted relay.
Dechuan Chen, Weiwei Yang, Jianwei Hu, Yueming Cai, Xuanxuan Tang   +4 more
doaj   +1 more source

DDPG Optimization for Hybrid RIS-Assisted Secure Multi-User-MISO Networks

IEEE Open Journal of the Communications Society
This paper investigates a Deep Reinforcement Learning (DRL) based optimization framework for secure communications in hybrid reconfigurable intelligent surface (RIS)-assisted multi-user multiple-input single-output (MU-MISO) systems.
Muhammad Iqbal, Burhan Wafai, Tabinda Ashraf, Syed Muhammad Jameel, Wali Ullah Khan, Muhammad Saad, Sangarapillai Lambotharan, Jen-Yi Pan   +7 more
doaj   +1 more source

Joint Power and Trajectory Design for Physical-Layer Secrecy in the UAV-Aided Mobile Relaying System

IEEE Access, 2018
Mobile relaying is emerged as a promising technique to assist wireless communication, driven by the rapid development of unmanned aerial vehicles.
Qian Wang, Zhi Chen, Hang Li, Shaoqian Li   +3 more
doaj   +1 more source

Physical Layer Security in Cognitive Millimeter Wave Networks

IEEE Access, 2019
Millimeter wave (mmWave) communications and cognitive radio networks are two key technologies to improve the spectral efficiency. For a cognitive mmWave wiretap network in which randomly located eavesdroppers may reside in the signal beam of the ...
Yi Song, Weiwei Yang, Xiaoqin Yang, Zhongwu Xiang, Biao Wang   +4 more
doaj   +1 more source

Physical Layer Security in Cognitive Untrusted Relay Networks

IEEE Access, 2018
In this paper, we consider the secure communications in a cognitive untrusted relay network, where the secondary source intends to communicate with a secondary destination through an untrusted relay in the presence of the direct source-destination link ...
Dechuan Chen, Yunpeng Cheng, Weiwei Yang, Jianwei Hu, Yueming Cai   +4 more
doaj   +1 more source