Frequency Sweeping Interference Suppressing in DSSS System Using Fractional Fourier Transform

QI Lin; TAO Ran; ZHOU Si-yong; WANG Yue

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Frequency Sweeping Interference Suppressing in DSSS System Using Fractional Fourier Transform

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- Frequency Sweeping Interference Suppressing in DSSS System Using Fractional Fourier Transform
- Acta Electronica Sinica Vol. 32, Issue 5, Pages: 799-802(2004)
- 作者机构：
  
  1. 北京理工大学电子工程系,北京,100081
  2. 郑州大学信息工程学院,河南,郑州,450052
  3. 北京理工大学电子工程系北京,100081
  4. 郑州大学信息工程学院河南郑州,450052
- 作者简介：
- 基金信息：
- DOI：
  CLC： TN911.42
- Published：2004
- 稿件说明：
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QI Lin, TAO Ran, ZHOU Si-yong, et al. Frequency Sweeping Interference Suppressing in DSSS System Using Fractional Fourier Transform[J]. Acta Electronica Sinica, 2004, 32(5): 799-802.
DOI：

QI Lin, TAO Ran, ZHOU Si-yong, et al. Frequency Sweeping Interference Suppressing in DSSS System Using Fractional Fourier Transform[J]. Acta Electronica Sinica, 2004, 32(5): 799-802. DOI：

摘要

本文提出了一种基于分数阶傅立叶变换的DSSS系统中扫频干扰的自适应抑制算法

分析了分数阶傅立叶域中扫频干扰的检测和抑制的基本原理

并给出了相应的干扰抑制接收机的结构

性能分析表明

该方法可获得明显的信噪比改善及较好的误码率性能

和其他基于二维时频分析工具的滤波算法相比

降低了计算的复杂度

其实现更为简便.

Abstract

An algorithm for the suppressing of frequency sweeping interference in DSSS system using fractional Fourier transform is proposed in this paper.The basic concepts of interference detection and suppressing in fractional Fourier domain are introduced and two kinds of DSSS receiver with adaptive time-varying excision filters are also provided.The performance analyses have shown that remarkable improvement of SNR and BER are obtained and compared with other two dimensional time-frequency interference suppressing algorithms

it is easy in computation and simple in implementation.

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Related Institution

China Research Institute of Radio Wave Propagation

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