Apparatus and method of compensating for frequency offset in OFDMA system
US8005182B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Oct 26, 2007 |
| Grant date | Aug 23, 2011 |
| Priority date | — |
| Expiry date | Jun 22, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L27/2679
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
The present invention relates to an apparatus and method of compensating for a frequency offset in an orthogonal frequency division multiple access system that is capable of efficiently estimating and compensating for the frequency offset. A receiver of the orthogonal frequency division multiple access system can individually estimate a fractional frequency offset and an integer frequency offset by using a downlink preamble signal. Further, the receiver can compensate for the frequency offset by adding the integer frequency offset once after completely compensating for the fractional frequency offset. Therefore, it is possible to efficiently compensate for the frequency offset.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.