Results 81 to 90 of about 465 (189)
Secrecy Enhancement of Cooperative NOMA Networks With Two-Way Untrusted Relaying
IEEE Access, 2020 The two-way relaying (TWR) technique has been confirmed to achieve higher spectral efficiency and average sum rate compared with the one-way relaying (OWR) technique in ultra-dense next generation networks with limited spectal resources.
Mona Awad +5 more
doaj +1 more source
IEEE Access, 2018 This paper investigates the effect of multiuser gain provided by the secondary user selection on the secrecy performance of the primary users. We first propose a simple scheme where the user with the minimal interference channel is selected, and derive a
Mian Qin +3 more
doaj +1 more source
, 2022 It is commonly known that physical layer security is achieved with a trade-off in terms of the achievable rate. Hence, security constraints generate rate losses in wiretap channels. To mitigate such rate losses in multi-user channels, we propose a coding/
Shah, Shahid Mehraj
core
, 2020 This letter investigates the ergodic secrecy rate (ESR) of a reconfigurable intelligent surface (RIS)-assisted communication system in the presence multiple eavesdroppers (Eves), and by assuming discrete phase shifts at the RIS.
G Pan (7735736) +3 more
core
Asymptotic performance analysis of untrusted relay system with full-duplex jamming destination
Tongxin xuebao, 2018 The cooperative relay technique in the field of physical layer security is widely concerned by the academic community,due to the advantages of increasing the network capacity and expanding the network coverage.However,cooperative relays may play as ...
Rui ZHAO +4 more
doaj +2 more sources
Joint Secrecy for D2D Communications Underlying Cellular Networks
, 2017 In this work, we investigate the ergodic secrecy rate region of a block-fading spectrum-sharing system, where a D2D communication is underlying a cellular channel. We consider that both the primary and the secondary transmissions require their respective
Hyadi, Amal +3 more
core +1 more source
Ergodic Secrecy Rate of Antenna-Selection-Aided MIMOME Channels with BPSK/QPSK Modulations
, 2019 This paper analyzes transmit antenna selection (TAS) under Rayleigh flat fading for BPSK/QPSK modulations in multiple-input multiple-output wiretap channels, also termed as multiple-input multiple-output multiple-eavesdropper (MIMOME) channels. In our protocol, a single antenna is selected to transmit the secret message and selection combing (SC) or ...
Ouyang, Chongjun +5 more
openaire +2 more sources
On the secrecy capacity of the broadcast wiretap channel with limited CSI feedback
, 2016 In this paper, we investigate the problem of secure broadcasting over block-fading channels with limited channel knowledge at the transmitter. More particularly, we analyze the effect of having imperfect channel state information (CSI) via a finite rate ...
Hyadi, Amal +2 more
core +1 more source
High SNR secrecy rates with OFDM signaling over fading channels [PDF]
, 2010 Orthogonal frequency division multiplexing (OFDM) systems have enjoyed widespread adoption in high data rate wired and wireless networks, due to their ability to efficiently cope with slowly varying dispersive channels.
POOR H. V. +2 more
core +1 more source
IEEE Access, 2017 This paper investigates the secrecy rates and optimal power allocation schemes for a decode-and-forward wiretap relay channel where the transmission from a source to a destination is aided by a relay operating in a full-duplex (FD) mode under practical ...
Lubna Elsaid +4 more
doaj +1 more source