Extended time tracking and peak energy in-window demodulation for use in a direct sequence spread spectrum system
US5778022A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 6, 1995 |
| Grant date | Jul 7, 1998 |
| Priority date | — |
| Expiry date | Dec 6, 2015 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L7/046
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A direct sequence spread spectrum communication system in a digital cordless telephone having a basestation and a handset that each implement an extended .linevert split.EE.linevert split.+.linevert split.E.linevert split.-.linevert split.L.linevert split.-.linevert split.LL.linevert split. time tracking system and peak matched filter demodulation within a related window to permit one sample per chip analog-to-digital conversion and demodulation for longer code sequences (providing savings in hardware and complexity) and to permit enhanced two sample per chip analog-to-digital conversion and demodulation for shorter code sequences (providing more robust fading immunity).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.