Method and apparatus for frequency domain compensation of DC offset in an orthogonal frequency division multiplexing system
US7860174B2 · kind B2 · utility
19Cited by
2References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 31, 2005 |
| Grant date | Dec 28, 2010 |
| Priority date | — |
| Expiry date | Aug 7, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L25/06
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Methods and systems are provided for estimating the DC offset distortion in a receiver. A fast Fourier transform is applied to at least a portion of a preamble portion of the received signal; an impact of the DC offset distortion on one or more empty subcarriers is determined; individual DC estimates are derived based on each of the determinations; and each of the individual DC estimates are combined to obtain an overall DC estimate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.