分析了在定点DSP上实现FFT时保持精度的几种方法

TELSIKS 2005 - 2005 uth International Conference on Telecommunication in ModernSatellite, Cable and Broadcasting Services Pub Date : 2005-09-28 DOI:10.1109/TELSKS.2005.1572089

Ž. Lukač, M. Temerinac

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引用次数: 5

摘要

本文介绍了在定点dsp上实现快速傅里叶变换时保持精度的几种方法，并对其性能进行了分析。本文所分析的方法在防止数学运算结果(复加法和复乘法)溢出的方式上有所不同。根据具体定点DSP的性能选择合适的方法。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Analysis of some methods for maintaining accuracy in implementation of FFT on fixed point DSP

This paper presents some methods for maintaining accuracy in implementation of fast Fourier transform on fixed point DSPs and analysis of their performance. Methods analysed in this paper differs by the way how overflow of mathematical operation results (complex addition and complex multiplication) is prevented. Depending of capabilities of specific fixed point DSP suitable method can be chosen.

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TELSIKS 2005 - 2005 uth International Conference on Telecommunication in ModernSatellite, Cable and Broadcasting Services

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