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The aim is to develop a hybrid code index modulation system based on multi-carrier differential chaos shift keying for efficient data transmission.

May 24, 2026EntropyOpen Access

Hybrid Code Index Modulation Based on Multi-Carrier Differential Chaos Shift Keying

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The aim is to develop a hybrid code index modulation system based on multi-carrier differential chaos shift keying for efficient data transmission.
Proposed HCIM MC-DCSK system transmits multiple information signals using one reference signal.
Used Walsh codes to separate data signals across M + 1 channels.
Derived analytical bit-error-rate expressions for operations over AWGN and multipath Rayleigh fading channels.
The proposed system shows enhanced spectral efficiency and data rate compared to conventional methods.
Validation through simulations confirms the analytical results, demonstrating the system's superiority.

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Proposed hybrid code index modulation enhances data transmission in multi-carrier systems, suggesting improved reliability.

Yu et al. (2026) studied this question.

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