Spread spectrum communication system and its transmitter and receiver
US5862172A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 14, 1996 |
| Grant date | Jan 19, 1999 |
| Priority date | — |
| Expiry date | Mar 14, 2016 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B1/707
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A spread spectrum communication system, which can detect the synchronization of the spread code surely even when the carrier-to-noise ratio is low, and can detect the boundary of the data. Wherein two types of spread code S20, S21 are transmitted from a transmitter 21 as an initial synchronizing signal based on a predetermined transmission pattern, and two types of spread code are respectively detected at a receiver 22. The predetermined transmission pattern is detected based on the detected two spread codes. Therefore, the spread code is detected several times at the receiver, and the synchronization of the spread code can be detected surely even when the carrier-to-noise ratio is low. Further, the boundary of the data can be detected by the predetermined transmission pattern.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.