Results 91 to 100 of about 465 (189)

Achieving secrecy of MISO fading wiretap channels via jamming and precoding with imperfect channel state information

open access: yes, 2014
In this letter, we consider physical layer security in multiple-input single-output (MISO) fading wiretap channels, where the transmitter utilizes a jamming-aided precoding transmission strategy to maximize the achievable secrecy rate of the channel. The
Liang, Ying-Chang   +3 more
core   +1 more source

Wireless powered large-scale multi-antenna AF relaying for cooperative jamming-aided secrecy [PDF]

open access: yes, 2016
This paper studies the secrecy transmission with the aid of a large-scale multi-antenna amplify-and-forward (AF) relay wireless powered by the source. Specifically, the wireless energy harvesting (WEH)-enabled relay devices a hybrid receiver architecture,
Xing, Hong   +11 more
core   +1 more source

Chaos-Based Dual-Function OTFS: Joint Security and PAPR Reduction for LEO Satellite Communications

open access: yesIEEE Access
Orthogonal time frequency space (OTFS) modulation is emerging as a strong candidate for Low Earth Orbit (LEO) satellite communication systems due to its ability to counter Doppler and delay impairments, enabling reliable performance in high-mobility ...
Imran Younas, Nawaf Qasem Hamood Othman
doaj   +1 more source

On the ergodic secret message capacity of the wiretap channel with finite-rate feedback

open access: yes, 2012
We study the secret message capacity of an ergodic block fading wiretap channel with partial channel state information at the transmitter and perfect channel state information at the receivers.
Alouini, Mohamed-Slim   +5 more
core   +1 more source

On the secrecy capacity of the broadcast wiretap channel with imperfect channel state information

open access: yes, 2014
In this paper, we consider secure broadcasting over fast fading channels. Assuming imperfect main channel state information (CSI) at the transmitter, we first provide an upper and a lower bounds on the ergodic secrecy capacity when a common message is ...
Hyadi, Amal   +7 more
core   +1 more source

Secure transmission scheme for RIS enabled bi-staticISAC system based on statistical CSI

open access: yes物联网学报
Considering the issues of communication and sensing securities for the reconfigurable intelligent surface (RIS) enabled integrated sensing and communication system, a joint design for the transmit covariance matrix and the reflection matrix of the RIS is
LIU Yilong, ZHANG Jun, NI Yiyang
doaj  

Improving Physical Layer Secrecy Using Full-Duplex Jamming Receivers

open access: yes, 2013
peer reviewedThis paper studies secrecy rate optimization in a wireless network with a single-antenna source, a multi-antenna destination and a multi-antenna eavesdropper.
OTTERSTEN, Björn   +6 more
core   +1 more source

Secrecy Performance of Small-Cell Networks with Transmitter Selection and Unreliable Backhaul under Spectrum Sharing Environment

open access: yes, 2019
We investigate the secrecy performance of an underlay small-cell cognitive radio network under unreliable backhaul connections. The small-cell network shares the same spectrum with the primary network, ensuring that a desired outage probability ...
Kundu, Chinmoy   +4 more
core   +1 more source

Mapping-Varied Spatial Modulation for Physical Layer Security: Transmission Strategy and Secrecy Rate

open access: yes, 2018
In this paper, a novel transmission strategy, referred to as mapping-varied spatial modulation, is proposed for physical layer security, where the transmitter varies mapping patterns for the radiated information and the antenna information of spatial ...
Mohsen Guizani (12580291)   +1 more
core   +1 more source

Ergodic secret message capacity of the wiretap channel with finite-rate feedback

open access: yes, 2014
We study the secret message capacity of an ergodic block fading wiretap channel with partial channel state information at the transmitter and perfect channel state information at the receivers, under both a short term power constraint (STPC) and a long ...
Alouini, Mohamed-Slim   +2 more
core   +1 more source

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