Estimating CIR using correlation with line removal
US6400779B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 10, 1999 |
| Grant date | Jun 4, 2002 |
| Priority date | — |
| Expiry date | Sep 10, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L25/0212
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method of estimating the channel impulse response (CIR) of a communication system is disclosed. The method comprises providing a first estimation of the CIR by an impulse response calculation, using correlation of signals to determine tap weights for the calculation, thereby providing a set of amplitude values within equally time spaced bins. The true path delay of a radio channel represented by the significant peaks in the first estimation is determined, by reference to amplitude values of those of the bins which surround the bin having the greatest amplitude. A refined estimation of the CIR is calculated using the significant peaks, such that these peaks represent substantially all the energy represented by the first estimation of CIR.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.