8-Point RADIX-8 Pipelined FFT Using SDF

Abstract

Fast Fourier Transform (FFT) operation is one of the most important fundamental operations in the digital signal processing systems. A new pipelined Radix-8 based Fast Fourier Transformation (FFT) architecture is designed for performing frequency transformation techniques. The objective of this design is to improve the speed and to reduce the area, delay and power. Radix-8 FFT, which is used to improve the speed of functioning by reducing the computational path. In the proposed new architecture named as ―Radix-8 SDF FFT‖. In this architecture, the numbers of stages are reduced to 75%. The SDF FFT is to increasing the processing speed of architecture. The performance evaluation of Radix-8 SDF FFT architecture is determined through Very Large Scale Integration (VLSI) system design environment. In the VLSI system design, less area utilization, low power consumption and high speed are the main parameters. Hence, the main goal of proposed architecture is to reduce hardware complexity, power consumption and increasing both speed and throughput of the system. Applications: Mobile Ad-hoc Network (MANET), Orthogonal Frequency Division Multiplexing (OFDM) System.