An Enhanced Spectral Efficiency Chaos-Based Symbolic Dynamics Transceiver Design

TL;DR

This paper introduces an improved chaotic symbolic dynamics transceiver that enhances spectral efficiency and synchronization quality without complex mechanisms, using a new chaotic map and maximum likelihood detection.

Contribution

It proposes a novel chaotic map and a maximum likelihood receiver to improve bandwidth efficiency and synchronization in chaos-based communication systems.

Findings

Enhanced spectral efficiency with the new chaotic map

High synchronization quality in noisy environments

Effective symbol estimation using maximum likelihood detection

Abstract

Chaotic synchronization performs poorly in noisy environments, with the main drawback being that the coherent receiver cannot be implemented in realistic communication channels. In this paper, we focus our study on a promising communication system based on chaotic symbolic dynamics. Such modulation shows a high synchronization quality, without the need for a complex chaotic synchronization mechanism. Our study mainly concerns an improvement of the bandwidth efficiency of the chaotic modulator. A new chaotic map is proposed to achieve this goal, and a receiver based on the maximum likelihood algorithm is designed to estimate the transmitted symbols. The performance of the proposed system is analyzed and discussed.