Patent ID: 7706426

Claim:
A method for estimating one or more parameters of a signal in an ultra wide band system comprising the steps of: (a) digitizing a received signal to form a digitized signal; (b) estimating one or more parameters for a first signal element in the digitized received signal to define the first signal element; (c) removing the defined first signal element from the digitized received signal to obtain a modified signal; (d) estimating the one or more parameters for a further signal element to define the further signal element; (e) removing the defined further signal element from the modified signal; (f) repeating the steps (d) and (e) for a predetermined number of signal elements; (g) obtaining a refined signal comprising the digitized received signal minus the defined further signal elements with the exception of the signal element having the greatest amplitude of all of the predetermined number of signal elements; (h) re-estimating the one or more parameters for the first signal element to re-define the first signal element based on the refined signal minus the signal element having the greatest amplitude of all of the predetermined number of signal elements; (i) re-estimating the one or more parameters for the signal element having the greatest amplitude of all of the predetermined number of signal elements to re-define the signal element having the greatest amplitude based on the refined signal minus the re-defined first signal element; (j) re-estimating the first signal element using the refined signal minus the re-defined signal element having the greatest amplitude; (k) repeating the steps (h) to (j) for a predetermined number of times to generate a refined estimate of the one or more parameters for the first signal element.