A Method to Raise the Interference Tolerance Margin of UWB System

XIONG Hai-liang; YI Ke-chu; WANG Yong-chao; ZHANG Jie

doi:10.3969/j.issn.0372-2112.2012.10.006

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A Method to Raise the Interference Tolerance Margin of UWB System

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- A Method to Raise the Interference Tolerance Margin of UWB System
- Acta Electronica Sinica Vol. 40, Issue 10, Pages: 1943-1947(2012)
- 作者机构：
  
  1. 山东大学信息科学与工程学院,山东,济南,250100
  2. 西安电子科技大学综合业务网国家重点实验室,陕西,西安,710071
  3. 谢菲尔德大学电子与电气工程学院, 英国谢菲尔德 S13JD,英国
  4. 山东大学信息科学与工程学院,山东,济南,250100
  5. 西安电子科技大学综合业务网国家重点实验室,陕西,西安,710071
  6. 谢菲尔德大学电子与电气工程学院英国谢菲尔德 S13JD,英国
- 作者简介：
- 基金信息：
  
  Independent Innovation Fund of Shandong University (No.2011GN063);National Natural Science Foundation of China (No.61071122)
- DOI：10.3969/j.issn.0372-2112.2012.10.006
  CLC： TN92
- Published：2012
- 稿件说明：
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XIONG Hai-liang, YI Ke-chu, WANG Yong-chao, et al. A Method to Raise the Interference Tolerance Margin of UWB System[J]. Acta Electronica Sinica, 2012, 40(10): 1943-1947.
DOI：

XIONG Hai-liang, YI Ke-chu, WANG Yong-chao, et al. A Method to Raise the Interference Tolerance Margin of UWB System[J]. Acta Electronica Sinica, 2012, 40(10): 1943-1947. DOI： 10.3969/j.issn.0372-2112.2012.10.006.

摘要

超宽带无线电系统常常因窄带干扰强度超出其干扰容限而无法正常工作

自适应陷波技术可大幅度提升其干扰容限.但在超宽带接收机中

实现高阶陷波非常困难

常规方法复杂度高、稳定性差、难于收敛.本文提出一种时分复用并行高阶自适应陷波方法

能同时快速跟踪并有效滤除一个或多个窄带强干扰

使系统干扰容限大幅度提升

且稳定性好、收敛快、对有用信号损伤小.理论分析与仿真结果验证了其优越性

且具有重要应用价值.

Abstract

UWB(Ultra Wideband) radio system is easily affected by strong narrow band interference.Traditional interference suppression methods using adaptive notch filter as a preprocessing unit can hardly be used due to high sampling speed in UWB receivers.In this paper

we proposed a novel parallel notch filter based on TDM (Time-division multiplexing) technique

which can effectively track and eliminate multi-band interference

and extremely raise the interference tolerance margin of the UWB wireless communication system when it is used as a preprocessing unit before dispreading.Moreover

the filter structure has such advantages as good stability

high convergence speed

low signal distortion.The numerical results validated the expected performance and properties.

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