Security Region Analysis with Artificial Noise Based on Secrecy Outage Probability

2018 ◽  
Author(s):  
Litao Mao ◽  
Yongzhao Li ◽  
Tao Li ◽  
Mingjun Gao ◽  
Hailin Zhang
Keyword(s):  
Outage Probability ◽  
Artificial Noise ◽  
Secrecy Outage Probability ◽  
Region Analysis ◽  
Security Region ◽  
Secrecy Outage

scholarly journals Secure Transmission in mmWave Wiretap Channels: On Sector Guard Zone and Blockages

Entropy ◽  
2019 ◽  
Vol 21 (4) ◽  
pp. 427 ◽  
Author(s):  
Yi Song ◽  
Weiwei Yang ◽  
Zhongwu Xiang ◽  
Yiliang Liu ◽  
Yueming Cai
Keyword(s):  
Outage Probability ◽  
Mobile Networks ◽  
Secure Communication ◽  
Artificial Noise ◽  
Secrecy Outage Probability ◽  
Transmission Scheme ◽  
Secrecy Outage ◽  
Key Enabling Technologies ◽  
Secure Transmission ◽  
Guard Zone

Millimeter-wave (mmWave) communication is one of the key enabling technologies for fifth generation (5G) mobile networks. In this paper, we study the problem of secure communication in a mmWave wiretap network, where directional beamforming and link blockages are taken into account. For the secure transmission in the presence of spatially random eavesdroppers, an adaptive transmission scheme is adopted, for which sector secrecy guard zone and artificial noise (AN) are employed to enhance secrecy performance. When there exists no eavesdroppers within the sector secrecy guard zone, the transmitter only transmits information-bearing signal, and, conversely, AN along with information-bearing signal are transmitted. The closed-form expressions for secrecy outage probability (SOP), connection outage probability (COP) and secrecy throughput are derived under stochastic geometry. Then, we evaluate the effect of the sector secrecy guard zone and AN on the secrecy performance. Our results reveal that the application of the sector secrecy guard zone and AN can significantly improve the security of the system, and blockages also can be utilized to improve secrecy performance. An easy choice of transmit power and power allocation factor is provided for achieving higher secrecy throughput. Furthermore, increasing the density of eavesdroppers not always deteriorates the secrecy performance due to the use of the sector secrecy guard zone and AN.

scholarly journals Defending Against Randomly Located Eavesdroppers by Establishing a Protecting Region

Sensors ◽  
2020 ◽  
Vol 20 (2) ◽  
pp. 438
Author(s):  
Tao Li ◽  
Chaozheng Xue ◽  
Yongzhao Li ◽  
Octavia A. Dobre
Keyword(s):  
Wireless Sensor Network ◽  
Outage Probability ◽  
Sensor Network ◽  
Wireless Sensor ◽  
Artificial Noise ◽  
Secrecy Outage Probability ◽  
Performance Simulation ◽  
Security Problem ◽  
Secrecy Outage ◽  
Network Channel

The security problem in wireless sensor networks faces severe challenges, due to the openness of the sensor network channel and the mobility and diversity of the terminals. When facing randomly located eavesdroppers, the situation is much more complex. This paper studies the security performance of a wireless sensor network where randomly located passive and active eavesdroppers are both considered. Compared to a passive eavesdropper, an active eavesdropper can perform both eavesdropping and malicious jamming simultaneously in a wireless sensor network. Based on beamforming and artificial noise (AN), we propose a practical way to defend against the eavesdropper by establishing a protecting region. An appropriate metric, the hybrid outage probability, which takes both the transmission outage probability and the secrecy outage probability into consideration, is utilized to evaluate the security performance. In addition, the concept of safe transmission range is defined to evaluate the security performance. Simulation results are provided to depict the insecure region and verify the harm of the active eavesdropper to the transmission in the wireless sensor network.

scholarly journals Analysis of SWIPT-Enabled Relay Networks with Full-Duplex Destination-Aided Jamming

2021 ◽  
Vol 2021 ◽  
pp. 1-18
Author(s):  
Jinglan Ou ◽  
Hangchuan Shi ◽  
Liubin Wang ◽  
Rui Ma ◽  
Haowei Wu
Keyword(s):  
Outage Probability ◽  
Closed Form ◽  
Signal To Noise Ratio ◽  
Full Duplex ◽  
Relay Network ◽  
Closed Form Expression ◽  
Artificial Noise ◽  
Secrecy Outage Probability ◽  
Power Splitting ◽  
Secrecy Outage

Simultaneous wireless information and power transfer (SWIPT) is a major breakthrough in the field of low-power wireless information transmissions. In this paper, the secrecy performance of the SWIPT-enabled relay network with full-duplex destination-aided jamming is assessed, where both the power-splitting (PS) and time-switching (TS) schemes at the relay are considered with the linear and nonlinear energy harvesting models. The relay harvests energy from the confidential signal and artificial noise sent by the source and destination, respectively, and forwards the amplified signal to the destination, in the presence of an eavesdropper. The analytical closed-form expressions of the connection outage probability (COP), secrecy outage probability (SOP), and transmission outage probability (TOP) for PS- and TS-based schemes are derived, and the closed-form expression of the lower bound of ergodic secrecy capacity (ESC) is calculated. The asymptotic-form expressions of the COP, SOP, TOP, and ESC are further analyzed to capture the valuable information in the high SNR regime. Numerical results verify the correctness of analytical results, reveal the effects of the PS/TS ratio, and transmit the signal-to-noise ratio on secrecy performance.

Improving Physical Layer Security via TAS and Full-Duplex Artificial-Noise-Added Receiver

Frequenz ◽  
2015 ◽  
Vol 69 (7-8) ◽  
Author(s):  
Yajun Zhang ◽  
Tao Liang ◽  
Aiwei Sun
Keyword(s):  
Outage Probability ◽  
Fading Channels ◽  
Antenna Selection ◽  
Signal To Noise Ratio ◽  
Full Duplex ◽  
Artificial Noise ◽  
Secrecy Outage Probability ◽  
Transmit Antenna Selection ◽  
Single Antenna ◽  
Secrecy Outage

AbstractIn this paper, we propose a hybrid scheme called transmit antenna selection and receiver’s artificial noise (TAS–rAN) for security enhancement in multiple-input single-output (MISO) wiretap channels. In this scheme, by using TAS protocol, the transmitter selects a single antenna that maximizes the instantaneous signal-to-noise ratio (SNR) at the full-duplex receiver. While the transmitter uses this antenna to transmit secrecy data, the full-duplex receiver would send artificial noise (AN) to confuse the potential eavesdropper. For the proposed protocol, we consider Rayleigh fading channels with different parameters for the main channel and the eavesdropper’s channel, and derive new closed-form expressions for the exact secrecy outage probability and the asymptotic secrecy outage probability. We demonstrate that the proposed TAS–

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