FPGA Implementation of 3780/2048/4096/8192Fast Fourier Transform Processor

• Main Authors: Wei-dun Peng, 彭唯敦
• Other Authors: Yih-Min Chen
• Format: Others
• Language: zh-TW
• Published: 2009
• Online Access: http://ndltd.ncl.edu.tw/handle/06693507681254932607

碩士 === 國立中央大學 === 通訊工程研究所 === 97 === In now days, Orthogonal Frequency Division Multiplexing, (OFDM) has been widely adapted in wireless communication to effectively overcome the Inter-Symbol Interference and Frequency Selective Fading Fast Fourier Transform (FFT) is the core technique in achieves Orthogonal Frequency Division Multiplexing, OFDM. In this thesis, we designed and created a low-complex and high performance FFT which can suitable in multiple OFDM standard systems. Due to different OFDM system has similar hardware framework, by raise up hardware to increase utilization of FFT. We adapt Radix-22 and Winograd Fourier Transform Algorithm as foundation and use Single-Path Delay Feedback (SDF) of pipeline-based architecture. Using CORDIC of Twiddle Factor to replace complex multiplexer. Hence, we try to attain decease hardware workload by introducing FPGA Block Memory. Finally, thru Xilinx Virtex-4 XCVLX160 to accomplish 3780、8192、4096、2048 Fast Fourier Transform.