OFDM demodulator
US6680901B1 · kind B1 · utility
25Cited by
4References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 27, 2000 |
| Grant date | Jan 20, 2004 |
| Priority date | — |
| Expiry date | Mar 27, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L27/2675
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
In order to shorten delay time in a synchronization circuit in an OFDM demodulator, with respect to a preamble for estimating carrier frequency/channel characteristic, the synchronization circuit does not have a delay circuit and a frequency error compensation signal of a carrier frequency estimating circuit is supplied to a channel distortion estimating circuit connected to an output of an FFT. In the channel distortion estimating circuit, a carrier frequency deviation is compensated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.