CIRJE-F-497 "Fourier Transform Method with an Asymptotic Expansion Approach: an Application to Currency Options"
Author Name Takahashi, Akihiko and Kohta Takehara
Date May 2007
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Remarks Revised as CIRJE-F-538(2008); subsequently published in International Journal of Theoretical and Applied Finance, Vol.11-4, 381-401, 2008.
Abstract

This paper develops a Fourier transform method with an asymptotic expansion approach for option pricing. The method is applied to European currency options with a libor market model of interest rates and jump-diffusion stochastic volatility models of spot exchange rates. In particular, we derive closed-form approximation formulas of the characteristic functions of log-prices of the underlying assets and the prices of currency options based on a third order asymptotic expansion scheme; we use a jump-diffusion model with a mean-reverting stochastic variance process such as in Heston[1993]/Bates[1996] and log-normal market models for domestic and foreign interest rates. Finally, the validity of our method is confirmed through numerical examples.