Vector estimation system, method and associated encoder
US6961718B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 16, 2001 |
| Grant date | Nov 1, 2005 |
| Priority date | — |
| Expiry date | Jan 18, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H21/003
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
An encoder and associated vector estimation method and system (1) for processing a sequence of input vectors (y0 to yT) each comprising a plurality of elements. The vector estimation system (1) has a digital filter (2) with a filter vector input (3) for receiving said sequence of input vectors (y0 to yT) and a predictor gain input (4) for controlling characteristics of the filter (2). The filter (2) is a Kalman filter and has both a current slowly evolving filter estimate output (6) and a previous slowly evolving filter estimate output (20). The current slowly evolving filter estimate output (6) provides a current filtered estimate value of a slowly evolving component of said sequence of input vectors (y0 to yT) and the previous slowly evolving filter estimate output (20) provides a previous filtered estimate value of the slowly evolving component of said sequence of input vectors (y0 to yT). There is also a parameter estimator (10) having an estimator vector input (19) for receiving said sequence of input vectors (y0 to yT) and a previous slowly evolving filter estimate input (13) coupled to the previous slowly evolving filter estimate output (20). The parameter estimator further …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.