Title: Crest-factor minimization using nonlinear chebyshev-approximation methods
Authors: Guillaume, P ×
Schoukens, Joannes
Pintelon, R
Kollar, I #
Issue Date: Dec-1991
Publisher: Ieee-inst electrical electronics engineers inc
Series Title: IEEE Transactions on Instrumentation and Measurement vol:40 issue:6 pages:982-989
Abstract: Low crest-factor of excitation and response signals is desirable in transfer function measurements, since this allows the maximization of the signal-to-noise ratios (SNR's) for given allowable amplitude ranges of the signals. The paper presents a new crest-factor minimization algorithm for periodic signals with prescribed power spectrum. The algorithm is based on approximation of the nondifferentiable Chebyshev (minimax) norm by l(p)-norms with increasing values of p, and the calculations are accelerated by using FFT's. Several signals related by linear systems can also be compressed simultaneously. The resulting crest-factors are significantly better than those provided by earlier methods. Moreover, it is shown that the peak value of a signal can be further decreased by allowing some extra energy at additional frequencies.
ISSN: 0018-9456
Publication status: published
KU Leuven publication type: IT
Appears in Collections:ESAT - STADIUS, Stadius Centre for Dynamical Systems, Signal Processing and Data Analytics
× corresponding author
# (joint) last author

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