Open Access

Filter-Bank-Based Narrowband Interference Detection and Suppression in Spread Spectrum Systems

EURASIP Journal on Advances in Signal Processing20042004:760472

https://doi.org/10.1155/S1110865704312102

Received: 29 October 2002

Published: 8 July 2004

Abstract

A filter-bank-based narrowband interference detection and suppression method is developed and its performance is studied in a spread spectrum system. The use of an efficient, complex, critically decimated perfect reconstruction filter bank with a highly selective subband filter prototype, in combination with a newly developed excision algorithm, offers a solution with efficient implementation and performance close to the theoretical limit derived as a function of the filter bank stopband attenuation. Also methods to cope with the transient effects in case of frequency hopping interference are developed and the resulting performance shows only minor degradation in comparison to the stationary case.

Keywords and phrases

narrowband interference cancellationcomplex PR filter banksDS-SS

Authors’ Affiliations

(1)
Institute of Communications Engineering, Tampere University of Technology

Copyright

© Stitz and Renfors 2004