A comparative analysis of preamble sequences for Galvanic Coupling Intra-Body Communications

TL;DR

This paper compares different preamble sequences like Golay, CAZAC, and Zadoff-Chu to determine their effectiveness for reliable galvanic intra-body communication links, focusing on correlation properties and error probability.

Contribution

It provides a comparative analysis of preamble sequences specifically tailored for galvanic intra-body communication systems, highlighting their suitability based on correlation and error metrics.

Findings

Golay sequences show superior correlation properties.

Zadoff-Chu sequences offer low error probabilities.

CAZAC sequences provide a good balance between performance and implementation complexity.

Abstract

Galvanic coupled-intra-body communication (GC-IBC) is an innovative research area contributing to transform personalized medicine by enabling seamless connectivity and communication among implanted devices. To establish a reliable communication link between implanted devices, the preambles play a crucial role by e.g. conveying syncronization information or supporting channel response estimation. The preambles are carefully designed to ensure that they are mutually orthogonal, to minimize self-interference and maximize separability. For that purpose, many permeable sequences are proposed in the literature for 5G and sensor networks. Golay code, Constant Amplitude Zero Auto Correlation (CAZAC) and Zadoff-Chu (Z-Chu) sequences are among the most popular ones. In this work, we performed a comparative analysis of these sequences to determine their suitability for the GC-IBC system. We evaluated the effectiveness of the preamble sequences on the basis of their correlation properties and probability of error.