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Related Experiment Video

Updated: Aug 13, 2025

Generation and Coherent Control of Pulsed Quantum Frequency Combs

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Chaotic Pulse-Shaping Filter Based on Root-Raised-Cosine Division.

Xiaosi Tian¹, Zulin Wang¹, Qin Huang¹

¹School of Electronic and Information Engineering, Beihang University, Beijing 100191, China.

Entropy (Basel, Switzerland)

|January 21, 2023

Summary

This study introduces an improved chaotic baseband wireless communication system (CBWCS) that reduces bit error rate (BER) by eliminating intersymbol interference (ISI). The novel system demonstrates superior performance and efficiency compared to traditional CBWCS.

Keywords:

ISI Lyapunov exponent chaotic filter dynamical system wireless communication

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Area of Science:

Wireless Communication
Chaos Theory
Signal Processing

Background:

Chaotic Baseband Wireless Communication Systems (CBWCS) inherently suffer from intersymbol interference (ISI), leading to degraded bit error rate (BER).
Existing methods for mitigating ISI in chaotic systems are often complex or inefficient.

Purpose of the Study:

To develop an ISI-free chaotic signal generation method for wireless communication.
To propose and evaluate a novel chaotic baseband wireless communication system (CBWCS) that enhances BER performance and reduces computational complexity.

Main Methods:

Constructed an ISI-free chaotic filter utilizing root-raised-cosine (RRC) division for chaotic signal generation.
Developed a new hybrid dynamical system to mathematically prove the chaotic properties, including topological conjugation and a positive Lyapunov exponent.
Simulated the proposed system under both single-path and multi-path channel conditions.

Main Results:

The proposed ISI-free chaotic filter effectively generates chaotic signals suitable for baseband waveforms.
The novel CBWCS demonstrated significantly improved BER performance compared to traditional CBWCS.
The proposed system also exhibited lower computational complexity than existing CBWCS.

Conclusions:

The developed ISI-free chaotic filter and the proposed CBWCS offer a promising solution for enhancing wireless communication reliability and efficiency.
This approach effectively addresses the BER degradation caused by ISI in chaotic systems.