An edition of New algorithms for the detection and elimination of sine waves and other narrow-band signals in the presence of broadband signals and noise (1992)
New algorithms for the detection and elimination of sine waves and other narrow-band signals in the presence of broadband signals and noise
By Michael A. Soderstrand
Publish Date
1992
Publisher
Naval Postgraduate School,Available from National Technical Information Service
Language
eng
Pages
76
Description:
Four different classes of adaptive signal cancelers can be used to eliminate narrow-band interference from a broadband signal: (1) cascaded second- order notch filters, (2) high-order in-line notch filters, (3) second-order bandpass noise cancelers, and (4) high-order bandpass noise cancelers. Of the four, a structure based on second-order bandpass filters used as signal cancelers is found to perform better than the other structures. The adaptive algorithm for these filters has been proposed by Kwan and Martin and modified by Petraglia, Mitra, and Szczupak. The Kwan and Martin structure can be reduced in hardware complexity without degrading performance using a new adaptive algorithm that out-performs any of the other known structures or algorithms. This new structure is particularly suited to the elimination of narrow-band interference in broadband Bi-Phase Shift-Key (BPSK) signals with and without background noise.... Narrow-band interference removal, Adaptive interference removal, Pipeline digital filters.
subjects: ALGORITHMS, ADAPTIVE FILTERS, CANCELLATION, SINE WAVES