Multi-Carrier $M$-ary DCSK System With Code Index Modulation: An Efficient Solution for Chaotic Communications

Cai, Guofa; Fang, Yi; Wen, Jinming; Mumtaz, Shahid; Song, Yang; Frascolla, Valerio

doi:10.1109/jstsp.2019.2913944

Cited by 185 publications

(146 citation statements)

References 42 publications

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“…Especially, in [24], the media-based modulation technique (MBM), which is one of the newest index modulation technology, is introduced to the DCSK system to provide a significant increase in both spectral efficiency and data rate through implementing index modulation with reconfigurable antennas. Nowadays, there have been many researches combining M-ary modulation, multi carrier modulation and index modulation to further increase the data rate of the DCSK system [25][26][27][28].…”

Section: Introductionmentioning

confidence: 99%

A Time-Delay Overlapping Modulation-Based High Spectral Efficiency and Secure DCSK System

et al. 2021

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In this paper, a new high spectral efficiency differential-chaos-shift-keying system based on the time-delay overlapping modulation technology (TDOP-DCSK) is proposed. In this system, the binary bits are conveyed by multiple chaotic carriers which are delayed in turn and overlapped directly in time domain, and demodulated via solving the equation system. Benefiting from the time-delay overlapping modulation, TDOP-DCSK can offer higher spectral efficiency, data transmission rate and energy efficiency. Meanwhile, as multiple information-bearing chaotic signals are delayed and overlapped, the correlation between the reference and information-bearing signal is weakened, which brings a higher security level. The spectral efficiency, energy efficiency and security are analyzed, and the analytical BER expressions are derived over both additive white Gaussian noise (AWGN) and multipath Rayleigh fading channels. In addition, effects of various system parameters on the system performance are discussed, and the BER comparison between TDOP-DCSK and the traditional DCSK system is implemented to discover the means of TDOP-DCSK symbol constitution. The simulation results verify superiorities and show broad prospects of TDOP-DCSK.

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Section: Introductionmentioning

confidence: 99%

A Time-Delay Overlapping Modulation-Based High Spectral Efficiency and Secure DCSK System

et al. 2021

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“…For alleviating channel noise as well as improving BER performance, a subcarrier-allocated MC-DCSK system was presented in [18]. To achieve higher performance, a multi-carrier M-ary DCSK system with code index modulation was proposed in [19], where the index modulation based on Walsh codes was used.…”

Section: Introductionmentioning

confidence: 99%

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

et al. 2021

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A new fractional-order multi-carrier M-ary differential chaos shift keying system with multilevel code-shifted modulation (MC-MDCSK-MCS) is presented in this paper. The proposed system adopts multiple subcarriers, on which multiple MCS-MDCSK-modulated signals are transmitted simultaneously. Moreover, M-ary modulation has been combined with the proposed system to achieve a higher bit rate. On the receiver side, the recovered reference signal is first averaged and then used for MCS-MDCSK demodulation, which helps improve performance. We analyze the bit error rate (BER) of the proposed system and verify our theoretical derivations with the simulation results over additive white Gaussian noise (AWGN) and Rayleigh fading channels. Finally, related comparisons are completed, which show that the MC-MDCSK-MCS system is excellent and promising.

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“…The code pair of source code and channel code were jointly optimized in [23], [29]. Moreover, three or four components among source code, channel code, type-I linking matrix and type-II linking matrix were jointly optimized over the additive white Gaussian noise (AWGN) channel by binary phase shift keying (BPSK) modulation [25], or over the Rayleigh fading channel [26] by M-ary differential chaos shift keying (DCSK) modulation [27].…”

Section: Introductionmentioning

confidence: 99%

Generalized Joint Shuffled Scheduling Decoding Algorithm for the JSCC System Based on Protograph-LDPC Codes

Wang

Hong

et al. 2021

IEEE Access

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The joint shuffled scheduling decoding (JSSD) algorithm can reduce the decoding complexity of the joint source-channel coding system (JSCC) based on double protograph low-density parity-check (P-LDPC) codes. However, the JSSD algorithm will not work when the linking matrix between check nodes (CNs) of the source P-LDPC and variable nodes (VNs) of the channel P-LDPC is adopted in such a system, and this linking matrix has a significant influence on the system performance. In this paper, a generalized joint shuffled scheduling decoding (GJSSD) algorithm is designed to work for the system, and the JSSD algorithm can be regarded as a special case of this algorithm. Simulations show that the proposed GJSSD algorithm can reduce the decoding complexity with performance improvement when compared with the joint belief-propagation (JBP) algorithm.INDEX TERMS Joint source-channel coding, P-LDPC code, shuffled decoding.

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Multi-Carrier $M$-ary DCSK System With Code Index Modulation: An Efficient Solution for Chaotic Communications

Cited by 185 publications

References 42 publications

A Time-Delay Overlapping Modulation-Based High Spectral Efficiency and Secure DCSK System

A Time-Delay Overlapping Modulation-Based High Spectral Efficiency and Secure DCSK System

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

Generalized Joint Shuffled Scheduling Decoding Algorithm for the JSCC System Based on Protograph-LDPC Codes

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