超寬頻系統之快速傅立葉轉換模組設計

Abstract

在本論文當中，從系統的需求探討超寬頻系統內的快速富立葉轉換模組的規格並設定所需要達到的目標，以高效能、高速和低延遲為首要目標。先從演算法的角度分析各總架構的複雜度，再從電路架構上選擇最佳的實作架構。最終，我們使用平行管線式架構來實現一個符合802.15.3a 規格的高效能、高速和低延遲的快速傅立葉轉換，並且作完整的電路驗證。硬體實現上，使用聯電0.18 微米製程，核心面積為1564.86 x 1564.64 um2，輸出量可達每秒800 百萬取樣。

In this thesis, we discuss the spec. of the FFT/IFFT module of the Ultra Wideband system from system requirement and we make the design target is high performance, high speed and low latency. We analyze the complexity of each algorithm and select appropriate circuit architecture to implement. Based on the system requirements of 802.15.3a Ultra Wideband, we proposed a modified radix-8 pipeline based architecture to implement a high performance, high speed and low latency FFT/IFFT module. The hardware was implemented using UMC 0.18μm technology with core size 1564.86 x 1564.64 um2 and throughput is 800M samples per second