Method and apparatus for frequency offset correction
US6363102B1 · kind B1 · utility
65Cited by
15References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 23, 1999 |
| Grant date | Mar 26, 2002 |
| Priority date | — |
| Expiry date | Apr 23, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2027/0057
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Coherent detection of high-speed digital wireless communications becomes more difficult when the frequencies of the transmitter and receiver oscillators do not coincide. A frequency-locked loop may be used to characterize this frequency offset by processing the samples received on a pilot channel. Rather than using the offset information thus derived to correct the frequency of the received signal, the invention realizes a considerable computational savings by applying a frequency correction to the despread pilot samples instead.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.