Link capacity allocation by input power spectrum

Consider a multimedia input traac stream, described by a stationary random process. Our previous study indicates that second-order input statistics, which are described by power spectrum in the frequency domain, play a dominant role in queueing performance as compared with higher-order input statistics. In this paper we show the signiicant eeect of input power spectrum on link capacity allocation in a nite-buuer system to achieve a desired performance criterion. The study also explores a fundamental limit of buuer sizing to improve link capacity when traac contains signiicant low-frequency power.