Method of frequency offset estimation and correction for adaptive antennas
US6393073B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 28, 1999 |
| Grant date | May 21, 2002 |
| Priority date | — |
| Expiry date | Jun 28, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L27/233
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method of frequency offset estimation and correction for adaptive antennas comprises receiving in a processor samples of a data set having a training data sample sequence. A batch least squares weight solution is computed for the training data sample sequence to obtain a least square error for each sample. Each error sample is rotated by multiplying by the conjugate of a sample of the reference training sequence and each rotated error sample is numbered (in the order received). A straight line is fit to the imaginary part of the rotated error sample (as a function of sample number) to obtain a frequency offset estimate. Each sample in a time slot of the samples of a dataset is multiplied by a complex exponential function of the frequency offset estimate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.