Bell Labs Internet Traffic Research

Averaged Periodogram Plot


The log averaged periodogram is graphed against frequency for two blocks of packet sizes with low and high connection rates. The solid curve is the ATS (Averaging, Transformation, and Smoothing) estimate (Cleveland, Mallows, and McRae, JASA, 1993) of the log power spectrum for our model as described in the paper "On the Nonstationarity of Internet Traffic".

Here is a collection of spectrum plots (compressed postscript, pdf) of packet inter-arrival times used in the paper "On the Nonstationarity of Internet Traffic". Due to large file size of the original plots, only a subset of 25 intervals out of 500 intervals is available for download here.