Wideband symbol synchronization in the presence of multiple strong narrowband interference
US6912262B1 · kind B1 · utility
8Cited by
10References
46Claims
0Family size
Assignee
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Key dates
| Filing date | Aug 24, 2001 |
| Grant date | Jun 28, 2005 |
| Priority date | — |
| Expiry date | Dec 25, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L7/04
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method and apparatus for time-shift extraction in a wideband transmitted signal containing strong narrowband interference or noise. The time-shift extraction is based on the time domain and frequency domain relation of symbol misalignment. The invention uses the sign of the product of a recieved signal sample and a reference symbol in the frequency domain to determine the time-shift. It does not rely on the signal magnitude and is therefore less dependent on the signal gain. It also does not rely on the soft phase values, which have ambiguity for values more than three hundred sixty (360) degrees.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.