Application of Fourier Transform in Signal Processing
Journal Title: Signal and Information Processing - Year 2018, Vol 1, Issue 1
Abstract
Fourier transform is a special integral transformation. The Fourier transform transforms the signal from the time domain to the frequency domain, and the frequency domain method has many outstanding advantages compared with the classical time domain method. Although Fourier analysis is not the only transform domain method in the field of information science and technology, it has to be recognized that Fourier transform analysis has always been widely used in this field. Fourier transform is used to realize the filtering, modulation and sampling of the signal, which is the most important application of Fourier transform in signal processing. Through the modulation of the signal can be low-frequency components of the signal modulation to high frequency, to achieve the spectrum shift, to reduce inter-code crosstalk, improve the new noise resistance, is conducive to long-distance transmission of the signal. In addition, the signal sampling can be continuous signal discretization, help to use the computer to deal with the signal. In short, Fourier transform has a very important role in signal processing, learning Fourier transform is the basis for learning other frequency domain transformations.
Authors and Affiliations
Lina Sun,Derong You,Daoyun Qi
Keywords
Related Articles
- EP ID EP679105
- DOI -
- Views 173
- Downloads 0
Design of Speech Signal Analysis and Processing System Based on Matlab Gateway
Speech signal processing is an emerging discipline to study the processing of speech signals with digital signal processing technology and phonological knowledge. It is one of the core technologies in the field of inform...
Design of FM Modulation and Demodulation Circuit Based on Matlab
FM is widely used in communication systems. FM is widely used in high-fidelity music broadcasting, television audio signal transmission, satellite communications and cellular telephone systems. The design is mainly use M...
OFDM Simulation and Its Application in Mobile Communication
In recent years, with the rapid development of the economy, people rely more and more on mobile communication, and therefore greatly promoted the rapid development of modern mobile communications industry, efficient mobi...
Analysis of Time Domain and Frequency Domain of Mechanical Test Signals
Mechanical signal processing is done by transforming some of the measurement signals, weakening the unwanted redundant signals in the mechanical signal, filtering out the mixed noise interference, or turning the signal i...
Application of Fourier Transform in Signal Processing
Fourier transform is a special integral transformation. The Fourier transform transforms the signal from the time domain to the frequency domain, and the frequency domain method has many outstanding advantages compared w...