Suppression of narrow-band interference and multipath by spread-spectrum receiver using decision-feedback filters

Toshiaki Ogawa, Iwao Sasase, Shinsaku Mori

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

The performance of a differential phase-shift-keying (DPSK) direct-sequence (DS) spread-spectrum receiver using decision-feedback (DF) filters in the presence of narrowband interference and multipath is considered. First, the general analytic expressions for the optimum tap weights of the DF filters and minimum mean square errors are obtained. Next, the authors calculate the output signal-to-noise ratio (SNR) of the system having the optimum tap weights. The authors also consider the bit-error-rate (BER) by computer simulation. Finally, the adaptive DF filters using a recursive least square (RLS) algorithm are considered. It is found that the two-sided DF filter is superior for suppressing both interference and multipath in the spread-spectrum system. The authors also find that the adaptive DF filter using the RLS algorithm has rapid convergence.

Original languageEnglish
Title of host publicationIEEE Pacific Rim Conference on Communications, Computers and Signal Processing. Conference Proceedings
Editors Anon
PublisherPubl by IEEE
Pages673-676
Number of pages4
ISBN (Print)0879426381
Publication statusPublished - 1991 Dec 1
EventProceedings of the 1991 IEEE Pacific Rim Conference on Communications, Computers and Signal Processing Processing. Conference Proceedings - Victoria, BC, USA
Duration: 1991 May 91991 May 10

Publication series

NameIEEE Pacific Rim Conference on Communications, Computers and Signal Processing. Conference Proceedings

Other

OtherProceedings of the 1991 IEEE Pacific Rim Conference on Communications, Computers and Signal Processing Processing. Conference Proceedings
CityVictoria, BC, USA
Period91/5/991/5/10

ASJC Scopus subject areas

  • Signal Processing
  • Computer Networks and Communications

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  • Cite this

    Ogawa, T., Sasase, I., & Mori, S. (1991). Suppression of narrow-band interference and multipath by spread-spectrum receiver using decision-feedback filters. In Anon (Ed.), IEEE Pacific Rim Conference on Communications, Computers and Signal Processing. Conference Proceedings (pp. 673-676). (IEEE Pacific Rim Conference on Communications, Computers and Signal Processing. Conference Proceedings). Publ by IEEE.