TY - GEN
T1 - Secrecy Outage Analysis of Artificial-Noise-Aided mmWave Transmissions in the Presence of Blockage
AU - Wang, Haoyu
AU - Ju, Ying
AU - Pei, Qingqi
AU - Wang, Hui Ming
N1 - Publisher Copyright:
© 2021 IEEE.
PY - 2021/4
Y1 - 2021/4
N2 - Millimeter-wave(Mmwave) networks with high directional antennas have enhanced security. However, eavesdroppers can still intercept confidential messages by residing in both signal main-lobe and side-lobe areas. This paper investigates the secrecy performance of artificial-noise (AN)-aided transmission in mmWave systems under the capacity-threshold on-off scheme in the presence of randomly distributed eavesdroppers, which utilizes AN to resist eavesdroppers in the side-lobe area. Considering the effects of mmWave channel characteristics, blockages, and directional antenna arrays, we derive the transmission probability (TP) and closed-form expression of secrecy outage probability (SOP) in the non-colluding eavesdropping scenario. What's more, we derive the analytical expression of SOP in the colluding eavesdropping scenario and its lower bound. Specifically, we characterize the impacts of various system parameters on the secrecy performance and verify the contribution of AN-jamming to inhibiting side-lobe information leakage, meanwhile, the optimal power allocation of AN is analyzed in non-colluding scenarios. Besides, our results reveal that with the narrower main beam and higher antenna gain, the secrecy performance is enhanced significantly. The analytical and numerical results show that the capacity-based transmission scheme with AN-jamming can effectively improve the secrecy performance of mmWave systems.
AB - Millimeter-wave(Mmwave) networks with high directional antennas have enhanced security. However, eavesdroppers can still intercept confidential messages by residing in both signal main-lobe and side-lobe areas. This paper investigates the secrecy performance of artificial-noise (AN)-aided transmission in mmWave systems under the capacity-threshold on-off scheme in the presence of randomly distributed eavesdroppers, which utilizes AN to resist eavesdroppers in the side-lobe area. Considering the effects of mmWave channel characteristics, blockages, and directional antenna arrays, we derive the transmission probability (TP) and closed-form expression of secrecy outage probability (SOP) in the non-colluding eavesdropping scenario. What's more, we derive the analytical expression of SOP in the colluding eavesdropping scenario and its lower bound. Specifically, we characterize the impacts of various system parameters on the secrecy performance and verify the contribution of AN-jamming to inhibiting side-lobe information leakage, meanwhile, the optimal power allocation of AN is analyzed in non-colluding scenarios. Besides, our results reveal that with the narrower main beam and higher antenna gain, the secrecy performance is enhanced significantly. The analytical and numerical results show that the capacity-based transmission scheme with AN-jamming can effectively improve the secrecy performance of mmWave systems.
KW - Physical layer security
KW - artificial noise
KW - blockage
KW - mmWave
KW - secrecy outage
KW - sector
UR - https://www.scopus.com/pages/publications/85112445225
U2 - 10.1109/VTC2021-Spring51267.2021.9448634
DO - 10.1109/VTC2021-Spring51267.2021.9448634
M3 - 会议稿件
AN - SCOPUS:85112445225
T3 - IEEE Vehicular Technology Conference
BT - 2021 IEEE 93rd Vehicular Technology Conference, VTC 2021-Spring - Proceedings
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 93rd IEEE Vehicular Technology Conference, VTC 2021-Spring
Y2 - 25 April 2021 through 28 April 2021
ER -