Spectrum analysis in multirate signal processing

He Feng; Wu Pengfei; Huang Zhihui

doi:10.13756/j.gtxyj.2014.06.007

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Spectrum analysis in multirate signal processing

- Spectrum analysis in multirate signal processing
- Study on Optical communication Issue 6, Pages: 26-28(2014)
- 作者机构：
  
  1. 重庆邮电大学光电工程学院
  2. 重庆邮电大学通信与信息工程学院
- 作者简介：
- 基金信息：
- DOI：10.13756/j.gtxyj.2014.06.007
  CLC： TN911.7
- Published：2014，
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[1]何丰,武鹏飞,黄志辉.多速率信号处理中的频谱研究[J].光通信研究,2014(06):26-28.

He Feng, Wu Pengfei, Huang Zhihui. Spectrum analysis in multirate signal processing. [J]. (6):26-28(2014)
[1]何丰,武鹏飞,黄志辉.多速率信号处理中的频谱研究[J].光通信研究,2014(06):26-28. DOI： 10.13756/j.gtxyj.2014.06.007.

He Feng, Wu Pengfei, Huang Zhihui. Spectrum analysis in multirate signal processing. [J]. (6):26-28(2014) DOI： 10.13756/j.gtxyj.2014.06.007.

摘要

针对多速率信号处理中抽取和内插过程对信号频谱的影响进行研究

利用傅里叶变换对整数倍抽取和整数倍零值内插后的信号频谱进行了理论推导

得出抽取和内插后信号频谱的变化规律及避免频谱混叠的方法。通过仿真实验对整数倍抽取和整数倍零值内插后信号的频谱进行分析

验证了理论推导的正确性

最后说明了在多速率信号处理中应注意的问题。

Abstract

This paper first studies the impacts of extraction and interpolation on signal spectrum in multirate signal processing.Then it theoretically derives the signal spectrum after integer times extraction and integer times zero-value interpolation by using the Fourier Transformation（FT）

obtaining the regular pattern of signal spectrum after extraction and interpolation as well as the method for avoiding spectrum aliasing.In addition

it analyzes it in experimental simulation

verifying the correctness of the theoretical derivation.Finally it presents a few points for attention in multirate signal processing.

关键词

多速率信号处理抽取内插频谱傅里叶变换

Keywords

multirate signal processingextractioninterpolationspectrumFT

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