Adaptive timing recovery via generalized RAKE reception
US8964912B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 2, 2005 |
| Grant date | Feb 24, 2015 |
| Priority date | — |
| Expiry date | Dec 25, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B2201/709727
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A method and apparatus for determining operating modes in a receiver is described herein. A delay searcher in the receiver detects a signal image in the received signal. When the receiver is a RAKE receiver, a plurality of RAKE fingers coherently combine time-shifted versions of the received signal at different delays. Alternatively, when the receiver is a chip equalization receiver, an FIR filter coherently pre-combines the signal images in the received signal. A processor determines delays. In particular, the processor generates a first signal quality metric for a single-delay receiver mode, and generates a second signal quality metric for a multi-delay receiver mode. Based on a comparison of the first and second signal quality metrics, the processor selects the single-delay or the multi-delay receiver mode for processing the signal image.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.