Velocity responsive time tracking
US7263349B2 · kind B2 · utility
19Cited by
6References
31Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 12, 2002 |
| Grant date | Aug 28, 2007 |
| Priority date | — |
| Expiry date | Oct 25, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B1/7085
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
The velocity of a wireless communications device (WCD) is estimated. In response to this estimated velocity, a tracking speed of a filter is determined that corresponds to the estimated velocity. The filter filters a timing error signal to produce a control signal that controls the timing of a synchronization clock. This synchronization clock may be a finger clock that controls the timing of a pseudonoise (PN) sequence generator configured for despreading a pilot symbol sequence.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.