Results 31 to 40 of about 1,433 (285)

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

open access: yesIEEE 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   +4 more
doaj   +1 more source

On effective secrecy throughput of underlay spectrum sharing α - μ/ Málaga hybrid model under interference-and-transmit power constraints [PDF]

open access: yes, 2023
The underlay cognitive radio-based hybrid radio frequency/free-space optical (RF/FSO) systems have emerged as a promising technology due to their ability to eliminate spectrum scarcity and spectrum under-utilization problems.
Badrudduza, A. S. M.   +5 more
core   +1 more source

Enhancing secrecy with sectorized transmission in decentralized wireless networks

open access: yes, 2021
In this paper, we combine sectorized transmission with artificial noise to establish secrecy in decentralized wireless networks. The locations of the legitimate nodes and the eavesdroppers are both modeled by homogeneous Poisson point processes.
Zhou, Xiangyun   +2 more
core   +2 more sources

Power Allocation for Energy Efficiency and Secrecy of Wireless Interference Networks [PDF]

open access: yes, 2018
© 2002-2012 IEEE. Considering a multi-user interference network with an eavesdropper, this paper aims at the power allocation to optimize the worst secrecy throughput among the network links or the secure energy efficiency in terms of achieved secrecy ...
Poor, HV   +4 more
core   +2 more sources

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

open access: yesSensors, 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   +5 more
doaj   +1 more source

Secure Multiuser Scheduling for Hybrid Relay-Assisted Wireless Powered Cooperative Communication Networks With Full-Duplex Destination-Based Jamming

open access: yesIEEE Access, 2021
In this paper, we investigate secure communication in a hybrid relay (HR)-assisted wireless powered cooperative communication network (WPCCN), where an eavesdropper tries to intercept the data transmitted by a source user and the HR simultaneously.
Xiaohui Shang   +4 more
doaj   +1 more source

A Feedback-Based Transmission for Wireless Networks with Energy and Secrecy Constraints

open access: yes, 2011
This paper investigates new transmission techniques for clustered feedback-based wireless networks that are characterized by energy and secrecy constraints.
McLaughlin, Stephen; id_orcid   +11 more
core   +1 more source

Rate Adaption for Secure HARQ-CC System with Multiple Eavesdroppers

open access: yesEntropy, 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   +4 more
doaj   +1 more source

Secure Cognitive MIMO Wiretap Networks With Different Antenna Transmission Schemes

open access: yesIEEE Access, 2021
This paper investigates a secure transmission in the multiple-input multiple-output (MIMO) cognitive wiretap networks, where a secondary transmitter (Alice) sends data to a secondary receiver (Bob) in the presence of an eavesdropper (Eve).
Yong Chen   +4 more
doaj   +1 more source

On Security and Throughput for Energy Harvesting Untrusted Relays in IoT Systems Using NOMA

open access: yesIEEE Access, 2019
In this paper, we analyze the secrecy and throughput of multiple-input single-output (MISO) energy harvesting (EH) Internet of Things (IoT) systems, in which a multi-antenna base station (BS) transmits signals to IoT devices (IoTDs) with the help of ...
Van Nhan Vo   +6 more
doaj   +1 more source

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