System and method for frequency offset and symbol index estimation
US8340221B1 · kind B1 · utility
3Cited by
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20Claims
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Key dates
| Filing date | Oct 30, 2009 |
| Grant date | Dec 25, 2012 |
| Priority date | — |
| Expiry date | Apr 21, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L27/2675
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Scattered pilots are used to estimate the integer frequency offset and OFDM symbol index simultaneously. A cross-correlation between IFFT outputs of received samples with different spectral shift and OFDM symbol index is used to identify the channel impulse response. Upon determination of the channel impulse, the estimated integer frequency offset and OFDM symbol index can then be determined.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.