A novel method of interference suppression in DSSS based on adaptive digital heterodyne notch filters

Ai Hua Wang*, Ru Liu, Bin Xue, Yong Qing Liu

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

2 Citations (Scopus)

Abstract

The degradation of receiver performance due to narrowband interference in DSSS can be improved by mitigation. The adaptive digital heterodyne notch filter can suppress strong narrowband interference efficiently by interference cancellation. Combined with the idea of FFT spectral analysis and timedomain adaptive notch, the paper presents a new structure improving on digital heterodyne adaptive notch filters. This filter can adaptively track the interference frequency and control the bandwidth and depth of notch, which has the excellent agility and utility. Through simulation, it is demonstrated that this method enhances the stability of the filter system, can quickly track the interference frequency, and has little influence on signal spectrum.

Original languageEnglish
Title of host publication2012 International Conference on Wireless Communications, Networking and Mobile Computing, WiCOM 2012
DOIs
Publication statusPublished - 2012
Event2012 8th International Conference on Wireless Communications, Networking and Mobile Computing, WiCOM 2012 - Shanghai, China
Duration: 21 Sept 201223 Sept 2012

Publication series

Name2012 International Conference on Wireless Communications, Networking and Mobile Computing, WiCOM 2012

Conference

Conference2012 8th International Conference on Wireless Communications, Networking and Mobile Computing, WiCOM 2012
Country/TerritoryChina
CityShanghai
Period21/09/1223/09/12

Keywords

  • Adaptive filters
  • DSSS
  • Heterodyne
  • Interference suppression

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