Narrowband interference mitigation in UWB systems utilizing frequency dependence of null formation in array antennas

Kazutaka Kikuta, Akira Hirose

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

The high precision ranging using ultra wideband (UWB) signals is expected for various applications. However, UWB requires mitigation of narrowband interference (NBI) from other wireless systems. There have been many studies of adaptive notch filters to cope with NBI at various frequencies. This paper proposes a novel NBI mitigation method which utilizes frequency dependence characteristics in array antennas. We use power inversion to direct nulls to large-power input, which realizes NBI only suppression with a small calculation cost. The results show that the proposed method can obtain lower bit error rate. The proposed method can cope with variously directional and multiple-frequency NBIs without a priori knowledge of the incident waves.

Original languageEnglish
Article number7755747
Pages (from-to)8715-8720
Number of pages6
JournalIEEE Access
Volume4
DOIs
Publication statusPublished - 2016 Jan 1
Externally publishedYes

Keywords

  • Ultra wideband (UWB)
  • power inversion
  • time of arrival (TOA)

ASJC Scopus subject areas

  • Computer Science(all)
  • Materials Science(all)
  • Engineering(all)

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