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| Physical Layer Security Scheme Exploiting Artificial Noise to Improve the Performance of Legitimate User |
| LEI Weijia LIN Xiuzhen YANG Xiaoyan XIE Xianzhong |
| (Chongqing Key Laboratory of Mobile Communications Technology, Chongqing University of Posts and Telecommunications, Chongqing 400065, China) |
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Abstract A physical layer security scheme is studied, which employs the advantage of artificial noise to improve the performance of legitimate user for multiple antenna systems using beamforming technology and artificial noise. Based on the transmitted symbols and channel coefficients, the sender determines whether or not the artificial noises are beneficial to the signal detection at the legitimate receiver. Then, beamforming vectors are designed accordingly. By taking advantage of useful noise, the signal to noise ratio at the legitimate receiver is improved effectively while that at the illegal receiver will remain the same. The bit error rate and the secrecy capacity are analyzed and simulated. The results demonstrate that the proposed scheme can improve the performance of the legal receiver and enhance secrecy capacity.
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Received: 13 January 2016
Published: 19 July 2016
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| Fund: The National Natural Science Foundation of China (61471076, 61301123), The Chongqing Research Program of Basic Research and Frontier Technology (cstc2015jcyjA40047), The Program for Changjiang Scholars and Innovative Research Team in University (IRT1299), The Special Fund of Chongqing Key Laboratory (CSTC) |
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Corresponding Authors:
LEI Weijia
E-mail: leiwj@cqupt.edu.cn
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