Ergodic Achievable Secrecy Rate of Multiple-Antenna Relay Systems With Cooperative Jamming
Ergodic Achievable Secrecy Rate of Multiple-Antenna Relay Systems With Cooperative Jamming
复制标题
协同干扰的多天线中继系统遍历可达到的保密率
DOI:
10.1109/twc.2015.2504526
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发表时间:
2016-04
影响因子:
10.4
通讯作者:
Vincent K. N. Lau
中科院分区:
文献类型:
--
作者:
Rui Zhao;Yongming Huang;Wei Wang;Vincent K. N. Lau
This paper investigates the ergodic achievable secrecy rate (EASR) of multiple-antenna amplify-and-forward relay systems, where one eavesdropper can wiretap the relay. To reveal the capability of the multiple-antenna relay in improving the secrecy performance, we derive new tight closed-form expressions of the EASR for three secure transmission schemes: artificial noise aided precoding (ANP), destination based jamming (DBJ) and eigen-beamforming (EB). We also derive the lower bounds of the EASR for ANP and DBJ with a large antenna array at the relay, and investigate their corresponding asymptotic performance in the high SNR and low SNR regimes to show valuable intrinsic insights as well. Based on the asymptotic analysis, we optimally allocate the power to the information signal and the artificial noise. Both the analysis and simulation results indicate that, in the moderate-to-high SNR regime, ANP achieves considerable performance gain over DBJ and EB, while in the low SNR regime, EB outperforms the other two schemes with equal power allocation. As SNR grows large, the EASR of EB approaches a constant independent of the first hop channel. Moreover, in the high SNR regime, it is optimal to allocate around half of total power to artificial noise for ANP and most of the power to artificial noise for DBJ.
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DOI:
--
发表时间:
2014-05
期刊:
ArXiv
影响因子:
--
作者:
S. Sarma;S. Agnihotri;J. Kuri
通讯作者:
S. Sarma;S. Agnihotri;J. Kuri
影响因子:
6.3
作者:
Qi Xiong;Yi Gong;Ying-Chang Liang;K. H. Li
通讯作者:
Qi Xiong;Yi Gong;Ying-Chang Liang;K. H. Li
影响因子:
6.3
作者:
Lifeng Wang;M. Elkashlan;Jing Huang;N. Tran;T. Duong
通讯作者:
Lifeng Wang;M. Elkashlan;Jing Huang;N. Tran;T. Duong
影响因子:
5.4
作者:
Huang, Jing;Swindlehurst, A. Lee
通讯作者:
Swindlehurst, A. Lee
影响因子:
2.5
作者:
Kim, Tung T.;Poor, H. Vincent
通讯作者:
Poor, H. Vincent