In this paper a method for the rejection of frequency domain outliers is proposed. The algorithm is based on the work by Huber on M-estimators and the concept of influence function introduced by Hampel. The estimation takes place in the context of frequency domain continuous-time ARMA modelling, but the method can be also be applied to the discrete time case.

Frequency domain optical coherence tomography allows for in-vivo nondestructive imaging at speeds two orders of magnitude faster than time domain methods while increasing the signal to noise ratio. These benefits are the result of acquiring information on all scatterers in a depth scan all the time. We explore methods of maintaining depth resolution through dispersion compensation and lateral r...

The multivariable maximum-likelihood estimate is derived for the case of frequency domain data. The relation with the time domain estimate is commented upon. The algorithm is analyzed with respect to consistency and expressions of the asymptotic variance is presented.

This article reviews techniques to identify the frequency domain properties of linear and nonlinear systems from measured physical input/output data. Practical spectral analysis procedures are discussed that are valid with random data to predict the frequency response functions in single-input/single-output (SI/SO) linear models and in multipleinput/single-output (MI/SO) linear models. Special ...

ABSTRACT Classical validation methods accept or reject a model as a valid representation of a plant. However this quantization has several problems: i) Models are neither good nor bad but have a certain valid frequency range. ii) This gives no guess on the failure reasons or the way the model could be improved. iii) In iterative identification and control approaches undermodeling is usually pre...

We present \surface frequency" representations, which describe how Cartesian positions on a surface vary with the intrinsic position along the surface. These representations are constructed using optimized coordinate values, individual sample weights, and an iterative transform algorithm. We then use surface frequency to monitor a deformable surface model and increase the number of samples when...

Abstract Single-carrier (SC) transmission is an appropriate transmission scheme for uplink transmission because of its low peak-to-average power ratio (PAPR). Spread spectrum (SS) transmission achieves higher frequency diversity gain and hence improves the bit error rate (BER) performance. The authors have recently proposed SC with frequency-domain spread spectrum (SC-FDSS) transmission with or...