Results 131 to 140 of about 714 (180)

Secrecy Outage Probability in Backscatter Communication Systems With Tag Selection

IEEE Wireless Communications Letters, 2021
In this letter, we propose a tag selection scheme to enhance the security transmission in a passive backscatter communication system with multiple tags and one eavesdropper, and analyze the secrecy outage probability (SOP). In particular, considering a practical non-linear energy harvesting model, we first determine the optimal dynamic reflection ...
Yingting Liu, Yinghui Ye, Rose Qingyang Hu   +2 more
openaire   +1 more source

Improving Secrecy Outage Probability with Symbol Extension

2014 IEEE 79th Vehicular Technology Conference (VTC Spring), 2014
This paper reveals symbol extension is capable of improving secrecy performance in the multiple-input single-output (MISO) wiretap channel. We propose a symbol extension scheme jointly with the existing beamforming and artificial noise generation strategy to exploit the time variation of fading channel.
Cong Zhang 0003, Tiejun Lv, Ruohan Cao, Hui Gao 0001   +3 more
openaire   +1 more source

Secrecy outage probability of wirelessly powered wiretap channels

2016 24th European Signal Processing Conference (EUSIPCO), 2016
This paper considers a wirelessly powered wiretap channel, where an energy constrained information source, powered by a dedicated power beacon, communicates with a legitimate user in the presence of a passive eavesdropper. The source is assumed to have multiple antennas, while the other three nodes are equipped with a single antenna each. Considering a
Xin Jiang 0009, Caijun Zhong, Xiaoming Chen 0001, Zhaoyang Zhang 0001   +3 more
openaire   +1 more source

Secrecy Outage Probability in Multi-RAT Heterogeneous Networks

IEEE Communications Letters, 2016
Practical difficulty in examining all base stations (BSs) to choose the best one providing secure transmission in heterogeneous networks (HetNets), we impose a BS association constraint in this letter that the BSs providing an average received signal power at the legitimate user greater than a predetermined receiving threshold can be candidate serving ...
Huici Wu, Xiaofeng Tao 0001, Na Li 0001, Jin Xu 0001   +3 more
openaire   +1 more source

On the ergodic secrecy capacity and secrecy outage probability of the MIMOME Rayleigh wiretap channel

Transactions on Emerging Telecommunications Technologies, 2015
AbstractIn this paper, we study the multiple‐input multiple‐output multiple‐eavesdropper wiretap channel in the nonergodic and ergodic scenarios, both with stationary Rayleigh distributed fading channels. For the ergodic scenario, we derive a new closed‐form expression for the ergodic secrecy capacity with full channel state information at the ...
Andre Saito Guerreiro, Gustavo Fraidenraich, Richard Demo Souza   +2 more
openaire   +1 more source

On Wireless Channels with M-Antenna Eavesdroppers: Characterization of the Outage Probability and Outage Secrecy Capacity

2010 IEEE Global Telecommunications Conference GLOBECOM 2010, 2010
In this paper, we consider secure communications between a single antenna transmitter and a single antenna receiver in the presence of a multiple antenna eavesdropper employing MRC or SDC reception. We show that an M-antenna eavesdropper performing SDC reception has precisely the same degrading effect on secrecy as M single antenna eavesdroppers under ...
Vinay Uday Prabhu, Miguel Rodrigues
openaire   +2 more sources

Secrecy outage probability of cognitive decode-and-forward relay networks

2016 IEEE International Conference on Communications Workshops (ICC), 2016
This paper investigates the secrecy performance of cognitive decode-and-forward (DF) relay networks with multiple primary users (PUs) receivers, one secondary user (SU) source, multiple SU relays, one SU destination and one SU eaves-dropper over Nakagami-m fading channels.
Yi Yuan, Rui Zhao 0002, Hongxin Lin, An Liu   +3 more
openaire   +1 more source

Secrecy Outage Probability of Hybrid Satellite-Terrestrial Relay Networks

GLOBECOM 2017 - 2017 IEEE Global Communications Conference, 2017
In this paper, we consider a hybrid satellite- terrestrial relay network (HSTRN) composed of a geostationary satellite, a terrestrial destination and multiple terrestrial relays in the presence of an eavesdropper, where the satellite transmits its data to the terrestrial destination via decode-and- forward (DF) relays while the secure transmission from
Weifeng Cao, Yulong Zou, Zhen Yang 0001, Jia Zhu 0001   +3 more
openaire   +1 more source

Secrecy outage probability of UAV-aided selective relaying networks

2017 Ninth International Conference on Ubiquitous and Future Networks (ICUFN), 2017
In this work, we analyze the secrecy outage probability of unmanned aerial vehicle (UAV)-aided selective relaying networks with M UAV-transmitters (UTs), N UAV-relays(URs), and K collaborative UAV-eavesdroppers (UEs). In the main channel, the best UT-UR pair is selected to transmit the source message to the destination, while unreliable ground-to-air ...
Hongwu Liu, Kyung Sup Kwak
openaire   +1 more source

Secrecy outage probability for the multiuser downlink with several curious users

2016 IEEE Wireless Communications and Networking Conference, 2016
This paper studies the physical layer security in a multi-user downlink, where a single user is selected for secret transmission during each time frame. Current works usually assume a worst case where all unselected users are curious and act as eavesdroppers, and conclude that no multiuser diversity is achievable for secrecy when the number of users is
Na Li 0001, Xiaofeng Tao 0001, Hui Chen 0008, Huici Wu   +3 more
openaire   +1 more source