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Simulation of weakly self-similar stationary increment \(\mathbf{Sub}_\varphi(\Omega)\)-processes: A series expansion approach. (English) Zbl 1082.60512

Summary: We consider simulation of \(\text{Sub}_\varphi(\Omega)\)-processes that are weakly selfsimilar with stationary increments in the sense that they have the covariance function \[ R(t,s) = \frac12 \left(t^{2H} + s^{2H} - | t-s|^{2H} \right) \] for some \(H \in (0,1)\). This means that the second order structure of the processes is that of the fractional Brownian motion. Also, if \(H > \frac12\), then the process is long-range dependent. The simulation is based on a series expansion of the fractional Brownian motion due to K. Dzhaparidze and H. van Zanten [Probab. Theory Relat. Fields 130, No. 1, 39–55 (2004; Zbl 1059.60048)]. We prove an estimate of the accuracy of the simulation in the space \(C([0,1])\) of continuous functions equipped with the usual sup-norm. The result holds also for the fractional Brownian motion which may be considered as a special case of a \(\text{Sub}_{x^2/2}(\Omega)\)-process.

MSC:

60G18 Self-similar stochastic processes
60G15 Gaussian processes
68U20 Simulation (MSC2010)
33C10 Bessel and Airy functions, cylinder functions, \({}_0F_1\)

Citations:

Zbl 1059.60048

Software:

longmemo
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References:

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