Patent ID: 7280942
Filing Date: 2007-10-09
Classification: H04B

Abstract:
1. A method for analyzing a set of signals, each signal acquired from a physical system, comprising the steps of: measuring a set of parameters characterizing a set of signals; evaluating a first point and a second point of a moment generating function for a combination of the set of signals according to the set of parameters to obtain a first sample and a second sample, respectively; defining a first equation, the first equation having an approximation of a moment generation function of a lognormal random variable representing the combination of the set of signals at the first point on the left side of the first equation and the first sample on the right side of the first equation; defining a second equation, the second equation having the approximation of the moment generation function of the lognoimal random variable representing the combination of the set of signals at the second point on the left side of the second equation and the second sample on the right side of the equation; solving the first and second equations to obtain a mean and a variance of the lognormal random variable; and using the mean and the vatiance to calculate a distribution of the lognormal random variable where the distribution represents the combination of the set of the signals.