United States of America As Represented by the Secretary of the Air Force

At&t Bell Laboratories

John A Cortese

John A Malas

Patricia A Ryan

Methods are provided for identifying and quantifying information loss in a system due to uncertainty and analyzing the impact on the reliability of system performance. Models and methods join Fano's equality with the Data Processing Inequality in a Markovian channel construct in order to characterize information flow within a multi-component nonlinear system and allow the determination of risk and characterization of system performance upper bounds based on the information loss attributed to each component. The present disclosure additionally includes methods for estimating the sampling requirements and for relating sampling uncertainty to sensing uncertainty. The present disclosure further includes methods for determining the optimal design of components of a nonlinear system in order to minimize information loss, while maximizing information flow and mutual information.

Fano-based information theoretic method (FBIT) for design and optimization of nonlinear systems

This invention is a timing recovery arrangement which adaptively retimes and regenerates a received stream of data pulse signals. The received stream of data pulse signals are selectively simultaneously sampled at two or more locations for the presence or absence of a data pulse signal. A signal representative of the detection of a pulse signal is generated for each location. The signals for the locations sampled are combined to generate a control signal which is used to selectively controllably change the locations where the samples are taken. Changing the locations where the samples are taken continues until the signal for the first location sampled is substantially equal to the signal for the second location sampled. In accordance with an embodiment of the invention, the control signals obtained, when two locations sampled, are sampled are generated by integrating the signals from the respective locations sampled to generate a first control signal and a second control signal.

Growing community of inventors

Reading, MA, United States of America

John A Cortese