QOE ‒ Lossless Real-Time Multichannel Signal Encoding Algorithm
Ondrej Kováč, Antonia Kovacova, Ján Šaliga, Jozef Kromka · Acta Polytechnica Hungarica · 2025
This study presents the Quite OK Encoding (QOE), a novel encoding algorithm designed for the efficient compression of multi-channel signals with a focus on losslessness, speed, and memory utilization.The evaluation of this algorithm was conducted using an electrocardiogram (ECG), a seismograph, and water parameter signals.The results indicate that it can effectively compress ECG signals, without relying on complex predictors, dictionaries, detectors, or additional encoding methods.The experiments targeted both twochannel and twelve-channel ECG signals from the MIT-BIH arrhythmia database as well as the PTB Diagnostic ECG Database.The properties of the proposed algorithm were assessed concerning cross-correlation between channels.The compression properties of the proposed algorithm were evaluated as well with seismic and water analysis signals.The computing efficiency of the proposed algorithm was assessed on the ATMega328p and STM32F446RE microcontroller systems.The findings indicate that the STM32F446RE demonstrated superior results with fewer computing instructions required.