### 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 language | English |
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Title of host publication | IEEE Pacific Rim Conference on Communications, Computers and Signal Processing. Conference Proceedings |

Editors | Anon |

Publisher | Publ by IEEE |

Pages | 673-676 |

Number of pages | 4 |

ISBN (Print) | 0879426381 |

Publication status | Published - 1991 |

Event | Proceedings of the 1991 IEEE Pacific Rim Conference on Communications, Computers and Signal Processing Processing. Conference Proceedings - Victoria, BC, USA Duration: 1991 May 9 → 1991 May 10 |

### Other

Other | Proceedings of the 1991 IEEE Pacific Rim Conference on Communications, Computers and Signal Processing Processing. Conference Proceedings |
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City | Victoria, BC, USA |

Period | 91/5/9 → 91/5/10 |

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### ASJC Scopus subject areas

- Engineering(all)

### Cite this

*IEEE Pacific Rim Conference on Communications, Computers and Signal Processing. Conference Proceedings*(pp. 673-676). Publ by IEEE.