A Method for Time-Varying Channel Parameter Estimation Based on Fractional Fourier Transform

CHEN En-qing; TAO Ran; ZHANG Wei-qiang

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A Method for Time-Varying Channel Parameter Estimation Based on Fractional Fourier Transform

更新时间：2025-07-16

- A Method for Time-Varying Channel Parameter Estimation Based on Fractional Fourier Transform
- Acta Electronica Sinica Vol. 33, Issue 12, Pages: 2101-2104(2005)
- 作者机构：
  
  北京理工大学电子工程系,北京,100081
- 作者简介：
- 基金信息：
- DOI：
  CLC： TN911.23
- Published：2005
- 稿件说明：
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CHEN En-qing, TAO Ran, ZHANG Wei-qiang. A Method for Time-Varying Channel Parameter Estimation Based on Fractional Fourier Transform[J]. Acta Electronica Sinica, 2005, 33(12): 2101-2104.
DOI：

CHEN En-qing, TAO Ran, ZHANG Wei-qiang. A Method for Time-Varying Channel Parameter Estimation Based on Fractional Fourier Transform[J]. Acta Electronica Sinica, 2005, 33(12): 2101-2104. DOI：

摘要

时变衰落信道环境对准确的信道估计提出了巨大挑战.本文提出了一种基于分数阶傅立叶变换的时变信道参数估计方法.该方法根据信道参数模型

通过发射多分量线性调频信号探测信道

在接收端应用分数阶傅立叶变换对接收信号进行参数估计

从而获得时变信道参数.分析和数值仿真结果表明

这一方法具有较高的估计精度

并且计算简单.

Abstract

Time-varying fading channel greatly challenges the accurate channel estimation.This paper proposes a method for time-varying channel parameter estimation based on fractional Fourier transform.According to the channel parametric model

a multicomponent LFM signal is sent to detect the channel.At the receiver

fractional Fourier transform is implemented to estimate the parameters of LFM signal and finally obtain the parameters of time-varying channel.Theoretical analysis and simulation results show that the proposed algorithm exhibits good performances and has a low computational complexity.

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