Tracking of a multi-path resolved signal in a rake receiver
US6901105B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 28, 2000 |
| Grant date | May 31, 2005 |
| Priority date | — |
| Expiry date | Dec 7, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B1/7085
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A resolved component of a multi-path signal is assigned to a rake finger of a spread spectrum rake receiver. The resolved component is variably delayed. On the variably delayed resolved component, an early-late detection is performed so as to determine whether the resolved component arrived early or late with respect to an optimum arrival time. A first pulse is generated if the early-late detection determines that said resolved component arrived early. A second pulse is generated if the early-late detection determines that the resolved component arrived late. The first and second pulses are counted. The first pulse causes counting in a first direction and the second pulse causes counting in a second direction. From the counting, a fractional-chip delay timing adjustment signal is derived, and fed back to adjust the variably delaying of the resolved component. Also from the counting a chip delay phase adjustment signal is derived, and fed back to control a phase of a pseudo-noise generator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.