Velocity responsive filtering for pilot signal reception
US7116957B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 22, 2001 |
| Grant date | Oct 3, 2006 |
| Priority date | — |
| Expiry date | May 2, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2027/0081
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
The velocity of a wireless communications device (106) is estimated. In response to this estimate, a filter bandwidth, such as a pilot filter (310) bandwidth, is adjusted so that the introduction of noise and distortion to a signal received by the device is mitigated. The filter bandwidth is adjusted by increasing it as the estimated velocity increases; and decreasing it as the estimated velocity decreases. Such adjustments may be accomplished through providing a number of predetermined bandwidths that each correspond to a particular velocity range, and setting the filter bandwidth to the predetermined bandwidth that corresponds to the estimated velocity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.