The influence of fast fourier transform on the signal-spectrum estimation

被引：1
|
作者：
Medvedev S.Y. [1 ]
Perov M.Y. [1 ]
Yakimov A.V. [1 ]
机构：
[1] N. I. Lobachevsky State, University, Nizhny Novgorod
来源：
Radiophysics and Quantum Electronics | 2002年 / 45卷 / 03期
基金：
俄罗斯基础研究基金会;
关键词：
Analog to digital converters - Binary words - Digital estimation - Harmonic signals - Optimal combination - Quantization noise - Signal spectrum;
D O I：
10.1023/A:1015932011243
中图分类号：
学科分类号：
摘要：
We analyze the accuracy of digital estimation of the signal spectrum. Quantization noise introduced by the analog-to-digital converter (ADC) and fast Fourier transform (FFT) is allowed for. The basic analysis is carried out using the example of a test harmonic signal. The characteristic of the signal-to-noise ratio, called the effective binary word size of a harmonic signal is introduced. Optimal combinations between the ADC word size and the FFT type used are discussed. © 2002 Plenum Publishing Corporation.
引用
收藏
页码：239 / 245
页数：6
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