# Chong Lai Joshua Lam

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2005

2007

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—This paper proposes the Log Shifted Gamma (LSG) approximation to model the sum of M lognormal distributed random variables. The closed-form probability density function (PDF) of the resulting LSG random variable (RV) is presented and its parameters are derived from those of the M individual lognormal RVs by using an iterative moment matching technique.… (More)

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