Design and Performance Analysis of a Multi-Carrier M-Ary DCSK System with Multilevel Code-Shifted Modulation Based on Fractional-Order Chaos

Jia, Yong; Jiang, Guoping; Yang, Hua; Yu, Bin; Du, Min

doi:10.3390/electronics10192343

Cited by 4 publications

(4 citation statements)

References 34 publications

(45 reference statements)

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“…Differential chaotic shift keying systems have become a hot research topic due to the use of non-coherent modulation techniques [6]. However, in a DCSK system, the bandwidth efficiency, energy efficiency, and data rate are inadequate because the reference signal is transmitted by fifty percent of the bit duration [7]. An efficient differential chaotic shift keying (HE−DCSK) scheme is proposed, which can carry 2 bits of data in a data modulated sample sequence, improving double efficiency [8].…”

Section: Introductionmentioning

confidence: 99%

Design and Analysis of a Multi−Carrier Orthogonal Double Bit Rate Differential Chaotic Shift Keying Communication System

et al. 2023

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A new multi−carrier orthogonal double bit rate differential chaotic shift keying (MC−ODBR−DCSK) communication system is presented in this paper. With two composite signals generated by an orthogonal chaotic signal generator as reference signals, 2M bits of information data are transmitted on M−channel subcarriers, improving transmission speed and energy efficiency. In addition, the receiver does not require a radio frequency (RF) delay circuit to demodulate the received data, which makes the system easier to implement. This paper analyzes Data−energy−to−Bit−energy Ratio (DBR) of the system. The bit error rate performance of the system is simulated to verify the impact of parameters such as chaotic maps, semi-spread spectrum factor, and sub-carrier number. At the same time, the bit error rate performance of the MC−ODBR−DCSK system is compared with traditional DCSK systems in Rician fading and additive Gaussian white noise (AWGN) channels.

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Section: Introductionmentioning

confidence: 99%

Design and Analysis of a Multi−Carrier Orthogonal Double Bit Rate Differential Chaotic Shift Keying Communication System

et al. 2023

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“…Because the nonlinear system equation, parameters, and initial conditions are completely determined, the chaotic signals are easy to be generated and copied [1,2]. The characteristics of chaotic signals, such as high randomness, unpredictability, high complexity, wide-band characteristics, certainty and easy realization of system equations, parameters, and initial conditions [3,4], have resulted in potential promising applications in secure communication. It has recently become a hot topic in the research of chaos applications.…”

Section: Introductionmentioning

confidence: 99%

Design and Analysis of a Short Reference Orthogonal Double Bit Rate Differential Chaotic Shift Keying Communication Scheme

et al. 2022

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With the broadband, noise-like, and non-periodic characteristics of chaotic signals, chaotic digital modulation schemes have received extensive attention. A new short reference orthogonal double bit rate differential chaotic shift keying (SR-ODBR-DCSK) communication scheme is proposed in the paper. The modulation technology generates two orthogonal chaotic signals by using the orthogonality of the chaotic signals acting on the Walsh function and modulates the continuous two-bit data information respectively to achieve the simultaneous transmission of two signals at the same time slot. Odd information bits and even information bits are modulated to two orthogonal signals so as to reach a double transmission rate on the basis of the original channel. In this paper, the performance of SR-ODBR-DCSK in the additive white Gaussian noise (AWGN) channel is analyzed, and a Monte Carlo simulation test is carried out. The bit error rate of this modulation method is compared with that of SR-DCSK. The results show that the SR-ODBR-DCSK system is excellent and promising.

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“…Encryption method based on some emerging techniques such as chaotic systems is one of the essential resources to ensure the protection of such documents. Most of the previous strategies were based on optical code [6][7][8][9] until a chaotic laser emerged that plays an important role in enhancing the security of optical communication [10][11][12][13]. In chaotic communication, the carrier is used to embed the message before sending it to the receiver side.…”

Section: Introductionmentioning

confidence: 99%

Secure Optical Communication Using a New 5D Chaotic Stream Segmentation

Al-Saidi¹,

Ali²,

Al-Azzawi³

et al. 2022

IJSDP

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According to its complex properties like ergodicity, unpredictability, and sensitivity to its initial states, chaotic systems are ‎attracting more and more attention and are widely used for security purposes. Moreover, ‎the chaotic signals are considered suitable for spread spectrum modulation due to their wideband properties. It is able to reduce the peak to average ‎power ratio (PAPA). This paper presents a new Dynamic Diffeo-Difference Multi-Dimensional (DDD-MD) system. It is used as ‎a key for a new cryptosystem designed based on the chaotic stream segmentation (CSS) method. The proposed ‎system provides the best trade-off between efficiency, robustness, and high data rate transmission. The behavior of the ‎proposed chaotic system is evaluated numerically by analyzing the Lyapunov exponent spectrum, complexity, and attractor ‎phase diagram. Besides, it is practically assessed based on the principle of system ‎circuit design; the circuit diagram of the system is prepared and simulated by Multisim, which shows high consistency with ‎the numerical simulation. These evaluations show that the proposed system has a rich dynamics behavior to be realized in ‎an encryption system and provides a foundation for many engineering and physical applications‎.

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Design and Performance Analysis of a Multi-Carrier M-Ary DCSK System with Multilevel Code-Shifted Modulation Based on Fractional-Order Chaos

Cited by 4 publications

References 34 publications

Design and Analysis of a Multi−Carrier Orthogonal Double Bit Rate Differential Chaotic Shift Keying Communication System

Design and Analysis of a Multi−Carrier Orthogonal Double Bit Rate Differential Chaotic Shift Keying Communication System

Design and Analysis of a Short Reference Orthogonal Double Bit Rate Differential Chaotic Shift Keying Communication Scheme

Secure Optical Communication Using a New 5D Chaotic Stream Segmentation

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