Apparatus and method for symbol time recovery using feedback loop
US11528176B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 14, 2020 |
| Grant date | Dec 13, 2022 |
| Priority date | — |
| Expiry date | May 13, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L27/2695
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Methods and an apparatus are provided. A first method includes receiving an estimated first arrival path (FAP); processing the estimated FAP; providing a rounding operation on the processed estimated FAP to generate an adjustment value for adjusting a fast Fourier transform (FFT) window; determining a quantization error based on the processed estimated FAP; and summing the quantization error to the processed estimated FAR A second method includes receiving an estimated FAP; determining a weighted average of the estimated FAP; processing the weighted average of the estimated FAP; providing a rounding operation on the processed weighted average of the estimated FAP to generate an adjustment value for adjusting an FFT window; determining a delayed STR adjustment based on the processed weighted average of the estimated FAP in a previous time slot; and summing the delayed STR adjustment to the processed weighted average of the estimated FAP in a current time slot.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.