Results 11 to 20 of about 7,230 (237)

Physical Layer Security of Dual-Hop Hybrid FSO-mmWave Systems

IEEE Access, 2023
Hybrid free-space optical (FSO) and millimeter wave (mmWave) systems have been proposed as an efficient solution to improve spectral efficiency and maintain link reliability.
Saud Althunibat, Sezer C. Tokgoz, Serhan Yarkan, Scott L. Miller, Khalid A. Qaraqe   +4 more
doaj   +1 more source

RIS-Aided Mixed RF-FSO Wireless Networks: Secrecy Performance Analysis With Simultaneous Eavesdropping

IEEE Access, 2023
In order to meet the demands of diverse services within sixth-generation networks across a range of industries, numerous approaches are being employed to address notable signal degradation resulting from channel obstruction, particularly in the realms of
Md. Mijanur Rahman, A. S. M. Badrudduza, Noor Ahmad Sarker, Md. Ibrahim, Imran Shafique Ansari, Heejung Yu   +5 more
doaj   +1 more source

Physical Layer Security Analysis of Multi-Hop Hybrid RF/FSO System in Presence of Multiple Eavesdroppers

IEEE Photonics Journal, 2022
In this paper, the physical layer security (PLS) analysis for a decode-and-forward (DF) protocol based multi-hop hybrid radio frequency (RF)/ free space optics (FSO) is presented.
Dipti R. Pattanayak, Vivek K. Dwivedi, Vikram Karwal, Pankaj K. Yadav, G. Singh   +4 more
doaj   +1 more source

Security enhancement for NOMA-UAV networks [PDF]

, 2020
Owing to its distinctive merits, non-orthogonal multiple access (NOMA) techniques have been utilized in unmanned aerial vehicle (UAV) enabled wireless base stations to provide effective coverage for terrestrial users.
Chen, Yunfei, Li, Yanxin, Lu, Weidang, Wang, Jingjing, Wang, Xianbin, Zhang, Shun, Zhao, Nan   +6 more
core   +1 more source

Secure Transmission of Cooperative Zero-Forcing Jamming for Two-User SWIPT Sensor Networks

Sensors, 2018
In this paper, the secrecy performance of the two-user simultaneous wireless information and power transfer (SWIPT) sensor networks is studied and a novel secure transmission scheme of cooperative zero-forcing (ZF) jamming is proposed.
Xuanxuan Tang, Yueming Cai, Wendong Yang, Weiwei Yang, Dechuan Chen, Junquan Hu   +5 more
doaj   +1 more source

Rate Adaption for Secure HARQ-CC System with Multiple Eavesdroppers

Entropy, 2020
In this paper, we studied the secure transmission of a hybrid automatic repeat request with chase combining (HARQ-CC) system, under the existence of multiple eavesdroppers and limited latency.
Yue Wu, Shishu Yin, Jian Zhou, Pei Yang, Hongwen Yang   +4 more
doaj   +1 more source

Secret Message Transmission by HARQ with Multiple Encoding [PDF]

, 2014
Secure transmission between two agents, Alice and Bob, over block fading channels can be achieved similarly to conventional hybrid automatic repeat request (HARQ) by letting Alice transmit multiple blocks, each containing an encoded version of the secret
Laurenti, Nicola, Tomasin, Stefano
core   +1 more source

Secure Multiuser Communications in Wireless Sensor Networks with TAS and Cooperative Jamming

Sensors, 2016
In this paper, we investigate the secure transmission in wireless sensor networks (WSNs) consisting of one multiple-antenna base station (BS), multiple single-antenna legitimate users, one single-antenna eavesdropper and one multiple-antenna cooperative ...
Maoqiang Yang, Bangning Zhang, Yuzhen Huang, Nan Yang, Daoxing Guo, Bin Gao   +5 more
doaj   +1 more source

Secure Transmission for Energy Efficient Parallel Mixed FSO/RF System in Presence of Independent Eavesdroppers

IEEE Photonics Journal, 2022
In this paper, the physical layer security (PLS) challenges for a decode and forward (DF) based dual hop mixed free space optical (FSO) / radio frequency (RF) communication system in the presence of multiple eavesdroppers has been investigated.
Dipti R. Pattanayak, Vivek K. Dwivedi, Vikram Karwal, Abhijeet Upadhya, Hongjiang Lei, G. Singh   +5 more
doaj   +1 more source

Optimal Beamforming for Physical Layer Security in MISO Wireless Networks [PDF]

, 2018
A wireless network of multiple transmitter-user pairs overheard by an eavesdropper, where the transmitters are equipped with multiple antennas while the users and eavesdropper are equipped with a single antenna, is considered.
Duong, Trung Q., Poor, H. Vincent, Sheng, Zhichao, Tuan, Hoang Duong   +3 more
core   +2 more sources