Reducing memory usage in noncoherent signal processing
US7313207B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 26, 2004 |
| Grant date | Dec 25, 2007 |
| Priority date | — |
| Expiry date | Dec 26, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B2201/70715
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method for detecting a positioning signal includes (a) correlating a segment of a received positioning signal with a reference signal of a selected code phase and frequency to obtain a correlation value, (b) if the correlation value is less than a predetermined minimum, assigning the correlation value to the predetermined minimum, and (c) accumulating the correlation value in a sum of correlation values obtained using other segments of the received positioning signal. In addition, the correlation value may be reduced by a predetermined value, which is preferably an expected mean value for a noise component in the segment of the received positioning signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.