Results 31 to 40 of about 2,245 (194)
On Secrecy Rate Analysis of MIMO Wiretap Channels Driven by Finite-Alphabet Input [PDF]
, 2012 This work investigates the effect of finite-alphabet source input on the secrecy rate of a multi-antenna wiretap system. Existing works have characterized maximum achievable secrecy rate or secrecy capacity for single and multiple antenna systems based ...
Bashar, Shafi +2 more
core +3 more sources
Physical Layer Security in Random NOMA-Enabled Heterogeneous Networks
IEEE Open Journal of the Communications SocietyThe performance of physical layer secrecy approach in non-orthogonal multiple access (NOMA)-enabled heterogeneous networks (HetNets) is analyzed in this paper. A K-tier multi-cell HetNet is considered, comprising NOMA adopted in all tiers.
Elmira Shahraki +2 more
doaj +1 more source
IEEE Access, 2019 In this paper, we investigate the secure transmission in multigroup multicasting cell-free massive MIMO system in the presence of pilot spoofing attack.
Xianyu Zhang +4 more
doaj +1 more source
Secure Transmission in Multi-Cell Massive MIMO Systems
, 2014 In this paper, we consider physical layer security provisioning in multi-cell massive multiple-input multiple-output (MIMO) systems. Specifically, we consider secure downlink transmission in a multi-cell massive MIMO system with matched-filter precoding ...
Bhargava, Vijay K. +2 more
core +1 more source
A new achievable ergodic secrecy rate region for the fading multiple access wiretap channel [PDF]
2009 47th Annual Allerton Conference on Communication, Control, and Computing (Allerton), 2009 We give a new achievable ergodic secrecy rate region for the two-user fading multiple access wiretap channel. Our scheme creates a vector channel between the two transmitters and the intended receiver that has full-rank and creates another vector channel between the two transmitters and the eavesdropper whose rank is 1.
Raef Bassily, Sennur Ulukus
openaire +1 more source
Effects of CSI Knowledge on Secrecy of Threshold-Selection Decode-and-Forward Relaying
IEEE Access, 2017 This paper considers secrecy of a three node cooperative wireless system in the presence of a passive eavesdropper. The threshold-selection decode-and-forward relay is considered, which can decode the source message correctly only if a predefined signal ...
Chinmoy Kundu +5 more
doaj +1 more source
Information, 2021 Non-orthogonal multiple access (NOMA) and wireless energy harvesting are two promising technologies for improving spectral efficiency and energy efficiency, respectively.
Yuan Ren +3 more
doaj +1 more source
Performance Study of Untrusted Relay Network Utilizing Cooperative Jammer [PDF]
AUT Journal of Electrical Engineering, 2016 —In this paper, the problem of secure transmission in two-hop amplify-and-forward (AF) systems with an untrusted relay is investigated. To prevent the untrusted relay from intercepting the source message and to achieve positive secrecy rate, the ...
Ali kuhestani +2 more
doaj +1 more source
Physical Layer Security for Massive MIMO Systems Impaired by Phase Noise
, 2016 In this paper, we investigate the impact of phase noise on the secrecy performance of downlink massive MIMO systems in the presence of a passive multiple-antenna eavesdropper.
Bhargava, Vijay K. +2 more
core +1 more source
Secrecy Balancing over Two-User MISO Interference Channels with Rician Fading
International Journal of Antennas and Propagation, 2013 This paper considers a 2-user multiple-input single-output (MISO) interference channel with confidential messages (IFC-CM), in which the Rician channel model is assumed.
Jiqing Ni +5 more
doaj +1 more source