TY - GEN
T1 - Physical-layer Key Generation for Orthogonal Frequency Division Multiplexing-Orbital Angular Momentum Systems
AU - Xin, Yun
AU - Li, Jiawei
AU - Wang, Dawei
AU - Zhao, Hongbo
AU - He, Yixin
AU - Jin, Yi
AU - Li, Li
AU - Zhou, Fuhui
N1 - Publisher Copyright:
© 2025 IEEE.
PY - 2025
Y1 - 2025
N2 - In this paper, we propose a novel physical-layer key generation (PKG) scheme for orthogonal frequency division multiplexing-orbital angular momentum (OFDM-OAM) systems to significantly enhance the confidentiality capacity (CC). In the proposed scheme, we first establish the OAM channel model under uniform circular array (UCA) misalignment in the line-of-sight (LoS) channel. Facing the risk of information leakage during key negotiation, we couple key generation with the OFDM communication process. Then, we analyze the CC of the OFDM-OAM system and derive its closed-form expression. Simulation results illustrate that the proposed OFDM-OAM PKG scheme has achieved high CC compared with existing works. In addition, as the offset angle of the eavesdropper's UCA increases, the CC increases, and the bit error rate (BER) of the eavesdropper tends to be 0.5.
AB - In this paper, we propose a novel physical-layer key generation (PKG) scheme for orthogonal frequency division multiplexing-orbital angular momentum (OFDM-OAM) systems to significantly enhance the confidentiality capacity (CC). In the proposed scheme, we first establish the OAM channel model under uniform circular array (UCA) misalignment in the line-of-sight (LoS) channel. Facing the risk of information leakage during key negotiation, we couple key generation with the OFDM communication process. Then, we analyze the CC of the OFDM-OAM system and derive its closed-form expression. Simulation results illustrate that the proposed OFDM-OAM PKG scheme has achieved high CC compared with existing works. In addition, as the offset angle of the eavesdropper's UCA increases, the CC increases, and the bit error rate (BER) of the eavesdropper tends to be 0.5.
KW - Orbital angular momentum (OAM)
KW - orthogonal frequency division multiplexing (OFDM)
KW - physical-layer key generation (PKG)
KW - uniform circular array (UCA)
UR - https://www.scopus.com/pages/publications/105032486946
U2 - 10.1109/VTC2025-Fall65116.2025.11310691
DO - 10.1109/VTC2025-Fall65116.2025.11310691
M3 - 会议稿件
AN - SCOPUS:105032486946
T3 - IEEE Vehicular Technology Conference
BT - 2025 IEEE 102nd Vehicular Technology Conference, VTC 2025-Fall - Proceedings
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2025 IEEE 102nd Vehicular Technology Conference, VTC 2025
Y2 - 19 October 2025 through 22 October 2025
ER -