Apparatus and methods for sample selection and reuse of rake fingers in spread spectrum systems
US7065128B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 31, 2001 |
| Grant date | Jun 20, 2006 |
| Priority date | — |
| Expiry date | Nov 22, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B2201/70707
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An apparatus for reducing storage requirements and for allowing reuse of multiple rake fingers in a spread spectrum system includes a decimation circuit having an associated decimation factor, a memory coupled to the decimation circuit, and an interpolation circuit having an interpolation factor coupled to the memory. The decimation circuit decimates the sampling rate of received data to produce a decimated rate. The received data is stored in the memory at the decimated rate. The decimated rate is later increased by the interpolation circuit by the interpolation factor when the stored data is retrieved from the memory. The memory is a circular buffer or a single port RAM that is accessible by multiple rake fingers substantially simultaneously via selector circuits.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.