Design of the 128-pt FFT/IFFT IP Core for UWB_OFDM System

SHI Long-zhao; GAO Feng

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Design of the 128-pt FFT/IFFT IP Core for UWB_OFDM System

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- Design of the 128-pt FFT/IFFT IP Core for UWB_OFDM System
- Vol. 30, Issue 8, Pages: 40-43(2013)
- 作者机构：
  
  福州大学物理与信息工程学院,福建,福州,350108
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：2013
- 稿件说明：
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施隆照, 高峰. UWB_OFDM系统中128点FFT/IFFT的IP核的设计[J]. 微电子学与计算机, 2013, 30(8): 40-43,48.

SHI Long-zhao, GAO Feng. Design of the 128-pt FFT/IFFT IP Core for UWB_OFDM System[J]. 2013, 30(8): 40-43.
施隆照, 高峰. UWB_OFDM系统中128点FFT/IFFT的IP核的设计[J]. 微电子学与计算机, 2013, 30(8): 40-43,48. DOI：

SHI Long-zhao, GAO Feng. Design of the 128-pt FFT/IFFT IP Core for UWB_OFDM System[J]. 2013, 30(8): 40-43. DOI：

摘要

提出了两种针对超宽带（UWB）无线通信系统的128点快速傅里叶变换（FFT） IP 核的设计，分别采用了288和448两种混合基结构。从算法、结构上对其优点和缺点作了分析。经过研究发现，448结构以增加面积为代价，降低了工作频率，在功耗方面有优势。而288结构在面积方面有优势。两个算法都可以在312 ns 内完成运算，都符合超宽带无线通信系统中对 FFT 的要求。两种算法都有规则的数据流，且控制器结构简单。

Abstract

Two 128-pt FFT/IFFT IP core architectures for UWB_OFDM system are proposed in the paper

where the mixed-radix structures of 288 and 448 are used.The relative merits and demerits of the architectures have been analyzed in arithmetic and structure.Through the research

the 448 structure is better from the power perspective by giving a reduction to the working frequency

however the area is increased.On the other hand

the other one is better in the perspective of area.Both architectures are completed in 312 ns

that meet the requirement for fft in the UWB_OFDM system.They both have regular data flow

and the structures of their controllers are simple.

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