Frequency offset acquisition for wireless communications
US9356648B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | May 19, 2014 |
| Grant date | May 31, 2016 |
| Priority date | — |
| Expiry date | Aug 5, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2027/0026
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Systems and techniques relating to wireless communications are described. A described technique includes determining a first frequency offset based on a received preamble of a wireless communication signal and a known preamble, the received preamble having been generated based on a spreading sequence and the known preamble, determining a second frequency offset based on the received preamble and the known preamble, and processing at least a portion of the wireless communication signal based on the first frequency offset and the second frequency offset. Determining the first frequency offset can include performing a multi-chip-level differential frequency offset acquisition that uses two or more chips associated with the received preamble. Determining the second frequency offset can include performing a symbol-level differential frequency offset acquisition that uses two or more symbols associated with the received preamble, where each of the two or more symbols are encoded by two or more chips.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.