Apparatus for searching multipath in spread spectrum communications system and method thereof
US7194018B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 1, 2002 |
| Grant date | Mar 20, 2007 |
| Priority date | — |
| Expiry date | Jul 14, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B1/7117
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A multipath searching device includes a radio front-end for converting a received radio signal into a baseband signal and for outputting the baseband signal. A profile calculating unit is included for calculating and outputting the multipath profile of the baseband signal. A first detector determines whether or not the radio signal traveled along a multipath is having a short-delay path by comparing the peak value of the multipath profile with a profile value of a predetermined position time interval before or after the peak of the multipath profile. A path selector receives the multipath profile and the detection result of the first detector, generates time delay information for each path, and separates many paths along which the radio signal traveled. A receiving unit receives the time delay information of the paths, despreads the baseband signal, and combines despread signals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.