A Low Peak-to-average Ratio Secure Transmission Method Based on U Matrix Transformation in Orthogonal Time and Frequency Space System

LU Xinjin; LEI Jing; LI Wei; LAI Xiongkun; DENG Zhe

doi:10.11999/JEIT220678

Volume 45 Issue 7

Jul. 2023

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Article Navigation > Journal of Electronics & Information Technology > 2023 > 45(7): 2395-2405

LU Xinjin, LEI Jing, LI Wei, LAI Xiongkun, DENG Zhe. A Low Peak-to-average Ratio Secure Transmission Method Based on U Matrix Transformation in Orthogonal Time and Frequency Space System[J]. Journal of Electronics & Information Technology, 2023, 45(7): 2395-2405. doi: 10.11999/JEIT220678

Citation:

LU Xinjin, LEI Jing, LI Wei, LAI Xiongkun, DENG Zhe. A Low Peak-to-average Ratio Secure Transmission Method Based on U Matrix Transformation in Orthogonal Time and Frequency Space System[J]. Journal of Electronics & Information Technology, 2023, 45(7): 2395-2405. doi: 10.11999/JEIT220678

Citation:

LU Xinjin, LEI Jing, LI Wei, LAI Xiongkun, DENG Zhe. A Low Peak-to-average Ratio Secure Transmission Method Based on U Matrix Transformation in Orthogonal Time and Frequency Space System[J]. Journal of Electronics & Information Technology, 2023, 45(7): 2395-2405. doi: 10.11999/JEIT220678

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A Low Peak-to-average Ratio Secure Transmission Method Based on U Matrix Transformation in Orthogonal Time and Frequency Space System

doi: 10.11999/JEIT220678

1.
College of Electronic Science and Technology, National University of Defense Technology, Changsha 410000, China
2.
The 31648 Troop of Chinese People's Liberation Army, Nanning 530021, China

Funds: The National Natural Science Foundation of China (6217072012, 6217010609)

Received Date: 2022-05-26
Rev Recd Date: 2022-09-08

Available Online: 2022-09-16

Publish Date: 2023-07-10

Abstract

Abstract

In order to reduce the Peak-to-Average Power Ratio (PAPR) and improve the security of the Orthogonal Time and Frequency Space (OTFS) system, a low PAPR secure transmission method based on the U matrix transformation in OTFS system is proposed in this paper. In this method, the initial key is generated through the Delay-Doppler (DD) domain of wireless channel, which is used to generate further chaotic sequences. The U matrix is designed by the chaotic sequence, which makes the symbols after the U matrix transformation are completely confused and noise-like. Besides, the U matrix selections can be controlled by the index. The transmitter sortes the OTFS time domain signals obtained from different U matrix transformations and selectes the signal with the lowest PAPR for transmission. The encrypted signal can be correctly obtained by the legitimate receiver after obtaining the index value. However, the eavesdropper cannot decrypt the information even if he obtained the transmitted index value. The simulation results show that the proposed scheme can reduce the PAPR of OTFS system effectively while ensuring the system reliability. In addition, the constellation diagram the U matrix transformation becomes spherical chaos, which makes the modulation method and information hidden. The decryption difficulty of the eavesdropper is greatly increased, and the security of the system is effectively enhanced.
- Secure transmission,
- Orthogonal Time and Frequency Space (OTFS),
- Peak-to-Average Power Ratio (PAPR),
- U matrix transformation,
- Wireless secret key

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References(31)

References

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