Is VBR video non-stationary or self-similar? Implications for ATM traffic characterisation
Stephen Bates, Stephen McLaughlin · 1996
This paper attempts to determine whether VBR video signals are either nonstationary or self-similar in nature as this has major implications for source characterisation on ATM networks. A quantitative test for determining the extent to which a signal can be considered wide sense stationary is developed from standard hypothesis testing techniques. This test is applied to VBR video data and three stationary models. A test is developed from the Hurst exponent estimator and this is also applied to the four sets of data and an additional ARIMA model. The implications of the results for characterisation techniques on ATM networks are discussed. 1 Introduction Effective bandwidths have been suggested as a traffic characterisation scheme for ATM networks, to facilitate the implementation of statistical multiplexing and hence maximise resources [1]. However recent research has suggested that VBR video (which is expected to be a major traffic type on future networks) exhibits self-similar beh...