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JCM 2024 Vol.19(10): 485-497
DOI: 10.12720/jcm.19.10.485-497

Transceiver Design for MIMO ZP-OTFS-SCMA System with Physical Layer Security

Md. Najmul Hossain1,*, SK. Tamanna Kamal2, Jinia Rahman3, Shaikh Enayet Ullah2, and Tetsuya Shimamura4,*
1Department of Electrical, Electronic and Communication Engineering, Pabna University of Science and Technology, Pabna-6600, Bangladesh
2Department of Electrical and Electronic Engineering, University of Rajshahi, Rajshahi-6205, Bangladesh
3Department of Electrical and Electronic Engineering Khwaja Yunus Ali University, Enayetpur, Sirajgonj-6700, Bangladesh
4Graduate School of Science and Engineering, Saitama University, Shimo-Okubo 255, Sakura-ku, Saitama 338-8570, Japan
Email: najmul_eece@pust.ac.bd (M.N.H.); tamanna.eee.ru@gmail.com (SK.T.K.); jinia4944@gmail.com (J.R.); enayet_apee@ru.ac.bd (S.E.U.); shima@mail.saitama-u.ac.jp (T.S.)
*Corresponding author

Manuscript received May 28, 2024; revised July 12, 2024; accepted August 30, 2024; published October 16, 2024.

Abstract—In this paper, we present an mmWave multiantenna configured transceiver for Sparse Code Multiple Access (SCMA) schemes implemented in an Orthogonal Time Frequency Space (OTFS) system. Our proposed system introduces a 6-D hyperchaotic mapping system-aided encryption algorithm to enhance physical layer security (PLS). Additionally, Turbo, Low-Density Parity Check (LDPC) and repeat and accumulate (RA) channel coding, modified form of Delay-Doppler (DD)-domain SCMA codeword allocation, Log-domain Message Passing Algorithm (Log-MPA)-based SCMA decoding, Cholesky Decomposition-Based ZF (CD-ZF) and Minimum Mean Square Error (MMSE) signal detection schemes are introduced for achieving improved Bit Error Rate (BER). The numerical results demonstrate the effectiveness of the proposed system in terms of PLS enhancement with low correlation coefficients (15.54%, 16.00%, 26.11%, 22.39%, 19.45%, and 18.68% for Users 1, 2, 3, 4, 5, and 6, respectively) on synthetically generated binary data transmission. Our system achieves a Complementary Cumulative Distribution Function (CCDF) of Peak-to-Average Power Ratio (PAPR) of 6.61 dB at its 0.1% probability level. The six users achieve a BER of 1×10-4 at signal-to-noise ratios (SNRs) of 6.5 dB, 15 dB, 8.5 dB, 6.5 dB, 9.5 dB, and 8.5 dB underutilization of turbo channel coding and MMSE signal detection schemes. In the case of turbo channel coding and CD-ZF signal detection schemes, the BER performance for all six users approaches zero for SNR values ranging from 0 dB to 20 dB.
 

Keywords—Orthogonal Time Frequency Space (OTFS), Sparse Code Multiple Access (SCMA), bit error rate, channel coding, peak-to-average power ratio, physical layer security encryption, Signal-to-Noise Ratio (SNR).


Cite: Md. Najmul Hossain, SK. Tamanna Kamal, Jinia Rahman, Shaikh Enayet Ullah, and Tetsuya Shimamura, “Transceiver Design for MIMO ZP-OTFS-SCMA System with Physical Layer Security," Journal of Communications, vol. 19, no. 10, pp. 485-497, 2024.

 

Copyright © 2024 by the authors. This is an open access article distributed under the Creative Commons Attribution License (CC BY-NC-ND 4.0), which permits use, distribution and reproduction in any medium, provided that the article is properly cited, the use is non-commercial and no modifications or adaptations are made.

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