Secrecy Performance Analysis of Multiple-antenna Relay Systems with Artificial Noise Precoding

ZHAO Rui; HE Yucheng; ZHOU Lin; XIE Weibo

doi:10.11999/JEIT160053

Volume 38 Issue 10

Oct. 2016

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Article Navigation > Journal of Electronics & Information Technology > 2016 > 38(10): 2575-2581

ZHAO Rui, HE Yucheng, ZHOU Lin, XIE Weibo. Secrecy Performance Analysis of Multiple-antenna Relay Systems with Artificial Noise Precoding[J]. Journal of Electronics & Information Technology, 2016, 38(10): 2575-2581. doi: 10.11999/JEIT160053

Citation:

ZHAO Rui, HE Yucheng, ZHOU Lin, XIE Weibo. Secrecy Performance Analysis of Multiple-antenna Relay Systems with Artificial Noise Precoding[J]. Journal of Electronics & Information Technology, 2016, 38(10): 2575-2581. doi: 10.11999/JEIT160053

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Secrecy Performance Analysis of Multiple-antenna Relay Systems with Artificial Noise Precoding

doi: 10.11999/JEIT160053

1.
2.
(Xiamen Key Laboratory of Mobile Multimedia Communications, Huaqiao University, Xiamen 361021, China)

Funds:

The National Natural Science Foundation of China (61401165, 61302095, 61271383), The Natural Science Foundation of Fujian Province (2015J01262, 2014J01243)

Received Date: 2016-01-13
Rev Recd Date: 2016-06-20
Publish Date: 2016-10-19

Abstract

Abstract

To improve the secrecy performance of relay networks in the presence of one eavesdropper, the Artificial Noise Precoding (ANP) and Eigen-Beamforming (EB) secure transmission schemes are appilied at the multiple-antenna amplify-and-forward relay, and the new tight closed-form expressions of the Ergodic Achievable Secrecy Rate (EASR) for two schemes are derived. The lower bound of the EASR for ANP is derived with a large antenna array at the relay, and its corresponding asymptotic performance is investigated in the high SNR and low SNR regimes to show valuable intrinsic insights. Analysis and Simulation results show that, in the moderate-to-high SNR regime, ANP achieves remarkable performance gain over EB, while in the low SNR regime, EB outperforms ANP. Moreover, in the high SNR regime, it is optimal to allocate around half of total power to artificial noise for ANP.
- Physical layer security,
- Amplify-and-forward relay,
- Artificial noise,
- Ergodic Achievable Secrecy Rate (EASR)

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References(19)

References

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