Kalman filter based equalization for digital multicarrier communications systems
US6295326A · kind A · utility
32Cited by
5References
23Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 1, 2000 |
| Grant date | Sep 25, 2001 |
| Priority date | — |
| Expiry date | Mar 1, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2025/03617
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A computer-implemented approach for reducing distortion in digital communications systems generally involves obtaining an optimal estimation of the original data using a Kalman filter with an increased length state to remove substantially all ISI in the time domain. The use of an increased length state in the Kalman filter provides a more accurate estimate of the transmitted data with relatively little additional computational cost. Subsequent equalization may also be performed in the frequency domain to correct any residual amplitude and phase distortion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.