Method and device for processing mismatches between two quadrature paths of a chain of a reception adapted for example to the reception of a signal modulated according to a modulation of the OFDM type
US7149485B2 · kind B2 · utility
1Cited by
7References
33Claims
0Family size
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Key dates
| Filing date | Aug 17, 2004 |
| Grant date | Dec 12, 2006 |
| Priority date | — |
| Expiry date | Jun 29, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2025/03522
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
In a calibration phase for a tuner of the DZIF type, N calibration frequency signals are generated at an input of a filter. The N calibration frequency signals have N calibration frequencies corresponding respectively after transposition to N analysis frequencies at an input of a Fourier transform. An amplitude and a phase of a corresponding point at an output of the Fourier transform are calculated for each analysis frequency. In a reception phase, each of the outputs of the Fourier transform is corrected with an inverse of the corresponding amplitude and opposite the corresponding phase calculated in the calibration phase.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.