Novel adaptive time-frequency excision technique for direct sequence spread spectrum communications

Mehmet V. Tazebay, Ali N. Akansu, Matthew J. Sherman

Research output: Contribution to conferencePaperpeer-review

4 Scopus citations

Abstract

A novel, adaptive time-frequency (ATF) exciser for suppressing the interference in Direct Sequence Spread Spectrum (DSSS) communications systems is proposed in this paper The adaptability of the proposed algorithm is two-fold. First, the domain of excision is decided. Then, for time-localized interference, excision is performed in the time domain. For a frequency-localized interference, an adaptive subband transform is employed. This joint treatment of time and frequency domains overcomes the performance limitations of the fixed transform-based excision algorithms. It is shown that the proposed ATF exciser-based DSSS receiver drastically outperforms the existing systems. Its performance is nearly optimal and very robust to the variations of the undesired signal.

Original languageEnglish (US)
Pages492-495
Number of pages4
StatePublished - Dec 1 1994
EventProceedings of the IEEE-SP International Symposium on Time-Frequency and Time-Scale Analysis - Philadelphia, PA, USA
Duration: Oct 25 1994Oct 28 1994

Other

OtherProceedings of the IEEE-SP International Symposium on Time-Frequency and Time-Scale Analysis
CityPhiladelphia, PA, USA
Period10/25/9410/28/94

All Science Journal Classification (ASJC) codes

  • Engineering(all)

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