school

UM E-Theses Collection (澳門大學電子學位論文庫)

check Full Text
Title

Hardware accelerated Nios II implementation of Hilbert Huang Transform = 基於Nios II 軟核處理器的希爾伯特黃變換硬體加速實現

English Abstract

Today, more and more people are caring about their health, so biomedical research is much more important for human being. Biomedical signal processing is one of the most important research areas in biomedical engineering, but most of the biomedical signals are nonlinear and non-stationary signals. And the traditional methods like Fourier transform are limited to the priori assumption that the signals being processed should be linear and stationary, which is a restriction for biomedical signal processing. In 1998, N. E. Huang proposed a novel algorithm which named Hilbert Huang Transform, this algorithm is very good at processing nonlinear and non-stationary signals, and it already has a lot of applications on biomedical engineering. But the huge computation cost is a bottleneck to implement those applications with real-time processing. This thesis presents a “Fast Instantaneous Frequency Analyzer Based on Hilbert transform”, the system can analyze nonlinear and non-stationary signals such as biomedical signals in time-frequency domain with a 3D spectrum. It clearly demonstrates the process of nonlinear and non-stationary signal during changing. And this thesis also proposes a method to use the concept of System On Programmable Chip to combine the soft-core processor with hardware functions to implement the acceleration for Hilbert Huang Transform. After evaluation, this method is proved to be effective.

Issue date

2010

Author

Wang, Lei

Faculty

Faculty of Science and Technology

Degree

M.Sc.

Subject

Hilbert-Huang transform

Signal processing

Engineering mathematics

Electrical and Electronics Engineering -- Department of Electrical and Electronics Engineering

Supervisor

Vai, Mang I

Mak, Peng Un

Files In This Item

Full-text (Intranet)

Full-text (Intranet)

Location
1/F Zone C
Library URL
991005549799706306