Method and apparatus for combining multipath spread-spectrum signals
US5353301A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 17, 1993 |
| Grant date | Oct 4, 1994 |
| Priority date | — |
| Expiry date | Sep 17, 2013 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B1/707
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A method and apparatus for combining multipath spread-spectrum signals are provided. The multipath combining is accomplished by detecting an envelope of an input differential phase shift keyed signal communicated over a communication channel. Subsequently, a replica of a multipath echo structure for the communication channel is detected within the detected envelope. In addition, a multipath echo structure weighted differential phase shift keyed signal with the detected replica of the multipath echo structure for the communication channel. Finally, the multipath echo structure weighted differential phase shift keyed signal is integrated over a one symbol period centered on a correlation peak such that power from a plurality of signal paths determines an output data bit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.