Design and Implementation of Secure CP-Less Multi-User OCDM Transceiver for 6G Wireless Communication Networks

In this paper, we designed and implemented a multi-antenna configured secure millimeter-wave (mmWave) CP-less multi-user orthogonal chirp division multiplexing (OCDM) transceiver. The proposed simulated system emphasizes more applicable performance metrics for a typically assumed case of four users...

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Bibliographic Details
Published in:	IEEE access Vol. 12; pp. 79276 - 79296
Main Authors:	Hossain, Md. Najmul, Raad, Raad, Sooppy Nisar, Kottakkaran, Enayet Ullah, Shaikh, Jabin, Fowzia, Kamal, Sk. Tamanna, Shimamura, Tetsuya, Tubbal, Faisel, Abulgasem, Suhila
Format:	Journal Article
Language:	English
Published:	Piscataway IEEE 2024 The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects:	6G mobile communication Algorithms Audio data BER Bit error rate Channel coding Chirp Code division multiplexing Codes Coding Communication networks Correlation coefficients cyclic prefix-less Data transmission Distribution functions Eavesdropping Error detection Fourier transforms Mathematical models Millimeter wave communication Millimeter waves Multiplexing OCDM OFDM OOB PAPR Parity Performance measurement physical layer security encryption Quadrature amplitude modulation Signal detection Signal to noise ratio SINR Symbols Wireless communications
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Summary:	In this paper, we designed and implemented a multi-antenna configured secure millimeter-wave (mmWave) CP-less multi-user orthogonal chirp division multiplexing (OCDM) transceiver. The proposed simulated system emphasizes more applicable performance metrics for a typically assumed case of four users and a passive eavesdropper for audio data transmission. We introduce a four-dimensional hyperchaotic system-based encryption algorithm to enhance physical layer security (PLS). In addition, low-density parity check (LDPC), TURBO, (<inline-formula> <tex-math notation="LaTeX">3, 2 </tex-math></inline-formula>) single parity check (SPC), and repeat and accumulate (RA) channel coding with Cholesky decomposition-based zero-forcing (CD-ZF) and minimum mean square error (MMSE) signal detection techniques for a better bit error rate (BER) were also implemented. The simulation results signify the effectiveness of the proposed system in terms of PLS enhancement with low correlation coefficients (14.62%, 7.61%, 13.61%, and 15.39% for users 1, 2, 3, and 4, respectively), an achievable secrecy rate with a low signal-to-interference and noise ratio (SINR) of the passive eavesdropper, an achievable out-of-band (OOB) power emission of 341 dB, an estimated average short-time Fourier transform (STFT) spectral power difference of 7.68 dB and estimated peak-to-average power ratios (PAPRs) ranging from 7 to 7.5 dB at a complementary cumulative distribution function (CCDF) of <inline-formula> <tex-math notation="LaTeX">1\times 10^{-3} </tex-math></inline-formula> for different ground transmitting channels. At an identical signal-to-noise ratio (SNR) of 17 dB, all four users achieved a bit error rate of <inline-formula> <tex-math notation="LaTeX">1\times 10^{-4} </tex-math></inline-formula> under RA channel coding, CD-ZF, and 16-QAM (quadrature amplitude modulation) digital modulation.
ISSN:	2169-3536 2169-3536
DOI:	10.1109/ACCESS.2024.3409473