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International Journal of Computer Applications (0975 8887)

Volume 177 No. 11, October 2019

4 Design and Implementation of 8 point FFT using Verilog HDL

Sonali Kangralkar

Student

VLSI Design & Embedded System

KLE Dr.M.S.Sheshgiri College of Engineering &

Technology

Rajashri Khanai, PhD

Professor

Department of Electronics and Communication

KLE Dr.M.S.Sheshgiri College of Engineering &

Technology

ABSTRACT

The importance of Digital Signal Processing (DSP) algorithms have increased drastically in recent times, the two important techniques of DSP are the Discrete Fourier Transform(DFT) and the Fast Fourier Transform(FFT). DFT is broadly used in the applications such as convolution, linear filtering etc. Another algorithm to compute DFT efficiently is the Fast Fourier Transform (FFT). Fast Fourier Transform processor has an important role in the field of communication system such as audio broadcasting and digital video etc. This paper deals with the designing of an 8 point FFT using radix-2 DIT FFT algorithm. This 8 point FFT design is implemented using Verilog HDL in Xilinx ISE Software.

General Terms

Discrete Fourier Transform, Fast Fourier Transform, Decimation in Time, Decimation in Frequency, algorithm

Keywords

Digital Signal Processing (DSP), Discrete Fourier Transform (DFT), Fast Fourier Transform (FFT), Split-Radix FFT (SRFFT), Decimation in Time FFT(DIT-FFT), Decimation in

Frequency(DIF-FFT)

1. INTRODUCTION

Digital signal processing is one of the frequently used techniques for video and audio applications. Many techniques are available in the DSP domain to analyze the video or audio signals. Discrete Fourier Transform (DFT) is widely used algorithm in digital signal processing applications such as linear filtering, convolution, spectrum analysis and correlation. DFT is said to be a frequency domain representation of original Sequence.

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