Carrier frequency estimation method and apparatus in wireless communication system
US8355468B2 · kind B2 · utility
2Cited by
2References
8Claims
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Key dates
| Filing date | Nov 27, 2009 |
| Grant date | Jan 15, 2013 |
| Priority date | — |
| Expiry date | Jul 6, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W56/0035
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A carrier frequency estimation method and apparatus is provided for improving frequency estimation performance in an Orthogonal Frequency Division Multiplexing (OFDM) communication system. The frequency estimation method for a wireless communication system includes summing correlations of four pairs of reference symbols transmitted at different frequency-time resource blocks in a pattern, each pair including two closest reference symbols; calculating a statistical value (E) by accumulating the summed correlation in a frequency direction; and estimating a frequency offset using an angle extracted from the statistical value (E).
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