Robust signed regressor PNLMS method and apparatus for network echo cancellation
US6611594B1 · kind B1 · utility
4Cited by
1References
32Claims
0Family size
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Key dates
| Filing date | Oct 25, 2000 |
| Grant date | Aug 26, 2003 |
| Priority date | — |
| Expiry date | Nov 13, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H2021/0063
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
The invention is a method and apparatus for performing echo cancellation utilizing a Proportionate Normalized Least Mean Squares (PNLMS) algorithm having a high convergence rate and low complexity. The invention utilizes a proportional step-size adaptive algorithm which utilizes the signs of the regressor rather than the regressor value itself in the gradient calculation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.