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Representations of fractional Brownian motion using vibrating strings
Institution:1. Center for Mathematics and Computer Science, Kruislaan 413, 1098 SJ Amsterdam, The Netherlands;2. Department of Mathematics, Faculty of Sciences, Vrije Universiteit Amsterdam, De Boelelaan 1081a, 1081 HV Amsterdam, The Netherlands
Abstract:In this paper, we show that the moving average and series representations of fractional Brownian motion can be obtained using the spectral theory of vibrating strings. The representations are shown to be consequences of general theorems valid for a large class of second-order processes with stationary increments. Specifically, we use the 1–1 relation discovered by M.G. Krein between spectral measures of continuous second-order processes with stationary increments and differential equations describing the vibrations of a string with a certain length and mass distribution.
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