Abstract

LOPEZ DELIS, Alberto; VAZQUEZ SEISDEDOS, Carlos  and  PASCAU SIMON, Alexander. Compression algorithm for the peripheral arterial pulse signal. uct [online]. 2005, vol.9, n.34, pp.75-79. ISSN 1316-4821.

The implementation of a compression algorithm for the peripheral arterial pulse signal is presented for the digital photoplethysmography systems with the use of digital signal processors. For the realization of the algorithm the methods Discrete Fourier Transform and Discrete Cosine Transform were used, they allow to carry out an analysis of the energy signal distribution in the Transform Domain, being able to obtain high compression rates. The results obtained with same test parameters for both transform demonstrate that even when the compression rate is better in the Discrete Fourier Transform the quality in the reconstructed signal is smaller with respect to the Discrete Cosine Transform, being this the best option to be implemented in the processing platform. This algorithm allows an efficient optimization of the memory space as well as a better performance in the data transmission, for the applications implemented in the plethysmography equipment.

Keywords : Arterial Pulse; Compression Algorithm; Compression Rate; Discrete Fourier Transform; Discrete Cosine Transform; Peripheral Arterial Pulse Signal; Photoplethysmography; Signal Reconstruction.