Efficient correlation over a sliding window
US5931893A · kind A · utility
142Cited by
4References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 11, 1997 |
| Grant date | Aug 3, 1999 |
| Priority date | — |
| Expiry date | Nov 11, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B2201/70707
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
The details of an improved correlator and efficient method of correlation are disclosed. The last M received signal samples are compared with all shifts of a given M-bit binary codeword. The correlator adds or subtracts each of the signal samples accordingly, as the corresponding shift of the codeword contains a binary "1" or "0" in that position. The total is output for each new signal sample received, with a shift of one position between the signal samples and the codeword.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.