Slot synchronization for a CDMA system
US7224718B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 17, 2003 |
| Grant date | May 29, 2007 |
| Priority date | — |
| Expiry date | Aug 2, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B1/7117
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A wireless system broadcasts data in frames, each frame having F slots. Output from a matched filter is used to combine K slots to generate profile data, where K is less than F. N peak values respectively from n peak positions are selected from the profile data, where n is greater than one. A correlator is employed, together with the n peak positions and S slots subsequent the K slots, to generate n×S correlation values. Respective combination values for the n peak positions are generated by coherently combining the correlation values, and combining the coherent combination results with the non-coherent n peak values. The combination values are respectively used to generate SNR values for each of the n peak positions. The peak position having the best respective SNR value is then selected as a slot synchronization position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.