Proceedings of 2nd International Multi-Disciplinary Conference Theme: Integrated Sciences and Technologies, IMDC-IST 2021, 7-9 September 2021, Sakarya, Turkey

Research Article

Multi-level Chaos-Shift-Keying for Non-Orthogonal Multiple Access with Physical Layer Security

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  • @INPROCEEDINGS{10.4108/eai.7-9-2021.2314409,
        author={Walid A. Al-Hussaibi and Israa M. Al-Musawi and Falah H. Ali},
        title={Multi-level Chaos-Shift-Keying for Non-Orthogonal Multiple Access with Physical Layer Security},
        proceedings={Proceedings of 2nd International Multi-Disciplinary Conference Theme: Integrated Sciences and Technologies, IMDC-IST 2021, 7-9 September 2021, Sakarya, Turkey},
        publisher={EAI},
        proceedings_a={IMDC-IST},
        year={2022},
        month={1},
        keywords={code-domain noma chaotic signals physical layer security csk wireless fading channels},
        doi={10.4108/eai.7-9-2021.2314409}
    }
    
  • Walid A. Al-Hussaibi
    Israa M. Al-Musawi
    Falah H. Ali
    Year: 2022
    Multi-level Chaos-Shift-Keying for Non-Orthogonal Multiple Access with Physical Layer Security
    IMDC-IST
    EAI
    DOI: 10.4108/eai.7-9-2021.2314409
Walid A. Al-Hussaibi1,*, Israa M. Al-Musawi1, Falah H. Ali2
  • 1: Southern Technical University, Basrah, Iraq
  • 2: Communications Research Group, University of Sussex, Brighton, UK
*Contact email: alhussaibi@stu.edu.iq

Abstract

To address the key issue of users’ privacy in future wireless communications, this work presents a generalized uplink secure code-domain non-orthogonal multiple access (SCD-NOMA) based on multi-level chaos-shift-keying (MCSK) signalling over Rician propagation environment. To have cost-effective physical layer security (PLS), the proposed scheme is designed by employing chaotic drive systems at the users’ side and a chaotic response system at the base station (BS) receiver. The transmitted signals are estimated efficiently at the BS through integrated maximum likelihood (ML) and chaos demodulation techniques. The efficacy of the proposed SCD-NOMA system is validated by intensive simulation results of the realized error rate, connectivity, and security gap, in comparison to the reference systems. Besides, the proposed scheme provides a huge key-space to increase the system’s PLS and compact exhaustive brute-force attacks.