Adaptive Secure Transmission Strategy for Multiuser Massive MIMO

JIN Liang; SONG Haotian; ZHONG Zhou; XU Xiaoming

doi:10.11999/JEIT170974

Volume 40 Issue 6

May 2018

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JIN Liang, SONG Haotian, ZHONG Zhou, XU Xiaoming. Adaptive Secure Transmission Strategy for Multiuser Massive MIMO[J]. Journal of Electronics & Information Technology, 2018, 40(6): 1468-1475. doi: 10.11999/JEIT170974

Citation:

JIN Liang, SONG Haotian, ZHONG Zhou, XU Xiaoming. Adaptive Secure Transmission Strategy for Multiuser Massive MIMO[J]. Journal of Electronics & Information Technology, 2018, 40(6): 1468-1475. doi: 10.11999/JEIT170974

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Adaptive Secure Transmission Strategy for Multiuser Massive MIMO

doi: 10.11999/JEIT170974

Funds:

The National 863 Program of China (2015AA01A708), The National Natural Science Foundation of China (61471396, 61701538, 61601514, 61501516, 61521003)

Received Date: 2017-10-17
Rev Recd Date: 2018-01-16
Publish Date: 2018-06-19

Abstract

Abstract

Massive MIMO system using Space Division Multiple Access (SDMA) can improve system throughput, and the use of multi-user downlink signal collaboration can cause superimposed interference to the eavesdropper, bringing a natural security gain. However, the physical layer security research of the system still adopts the traditional artificial noise scheme to improve the system security, ignoring the safety gain caused by the multi-user signal interference, resulting in serious power waste. In response to this problem, the impact of multi-user signal interference on the system achievable average security rate and average safety energy efficiency is analyzed in this paper, and the optimal interval of access users is given. The research shows that the system security capability is weak when the number of access users is small or large. Therefore, an adaptive secure transmission strategy to transmit N scrambling beams and user scheduling based on user location is proposed respectively. Finally, the effectiveness of the theoretical derivation and the proposed strategy is verified through the simulation. By using the proposed strategy, the secure communication can be guaranteed when the system,s natural security capability is insufficient.
- Massive MIMO,
- Physical layer security,
- Muti-users,
- Adaptive secure transmission

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References(15)

References

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