Frequency-splitting estimators of single-propagator traces

Efficient Single Frequency Estimators

The estimation of the frequency of a single sinusoid embedded in additive white Gaussian noise is one of the classical problems of signal processing. It has importance in many applications in communications, where frequency estimation is used for decoding, and in radar processing and sonar processing. The problem of frequency estimation has been widely explored, but there is still room for a be...

Wavelet Based Estimators of Long-range Dependencies in Traffic Traces

It has been shown that Internet traffic possesses a high degree of self-similarity and long-range dependency. Hence, classical statistical models cannot adequately model the fundamental properties of such traffic. The degree of long-range dependency is captured by the Hurst parameter. Various statistical estimators can be used to estimate the long-range dependency and consequently, the Hurst (H...

The Feynman propagator from a single path.

We show that it is possible to construct the Feynman propagator for a free particle in one dimension, without quantization, from a single continuous space-time path.

Performance of quadratic time-frequency distributions as instantaneous frequency estimators

General performance analysis of the shift covariant class of quadratic timefrequency distributions (TFDs) as instantaneous frequency (IF) estimators, for an arbitrary frequency-modulated (FM) signal, is presented. Expressions for the estimation bias and variance are derived. This class of distributions behaves as an unbiased estimator in the case of monocomponent signals with a linear IF. Howev...

Improved Treatment of Frequency Sums in Propagator - Renormalized Perturbation Theories