Simulation and Approximation of Lévy-driven Stochastic Differential Equations

نویسنده

  • NICOLAS FOURNIER
چکیده

We consider the problem of the simulation of Lévy-driven stochastic differential equations. It is generally impossible to simulate the increments of a Lévy-process. Thus in addition to an Euler scheme, we have to simulate approximately these increments. We use a method in which the large jumps are simulated exactly, while the small jumps are approximated by Gaussian variables. Using some recent results of Rio [12] about the central limit theorem, in the spirit of the famous paper by Komlós-Major-Tsunády [10], we derive an estimate for the strong error of this numerical scheme. This error remains reasonnable when the Lévy measure is very singular near 0, which is not the case when neglecting the small jumps. In the same spirit, we study the problem of the approximation of a Lévy-driven S.D.E. by a Brownian S.D.E. when the Lévy process has no large jumps. Mathematics Subject Classification (2000): 60-04, 60H10, 60J75.

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تاریخ انتشار 2009