Cramer-Rao lower bound on locations of sudden changes in a steplikesignal

Authors:
A.M. Reza;M. Doroodchi
Affiliations:
Dept. of Electr. Eng. & Comput. Sci., Wisconsin Univ., Milwaukee, WI;-
Venue:
IEEE Transactions on Signal Processing
Year:
1996

Citing 0
Cited 2

Cramer-Rao lower bounds for change points in additive and multiplicative noise

Signal Processing
Barankin-type lower bound on multiple change-point estimation

IEEE Transactions on Signal Processing

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Abstract

Estimation of locations of sudden changes in a steplike signal has many signal processing applications; e.g., well-log signal segmentation, ionic-channel signal classification, edge detection, and segmentation of images. In this work, the Cramer-Rao lower bound (CRLB) on locations of steps in one-dimensional (1-D) steplike signals is calculated. The calculation is based on the use of a sigmoidal function to model a sudden-change (step) in the signal. The introduced model has an adjustable parameter that can be used to fit the CRLB calculation to a particular class of steplike signals