Code distribution multiple access communication system with user voice activated carrier and code synchronization
US5327467A · kind A · utility
48Cited by
4References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 30, 1991 |
| Grant date | Jul 5, 1994 |
| Priority date | — |
| Expiry date | May 30, 2011 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B7/216
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A communication system comprising a master control station and user terminals (100), in which synchronization in the outward link is achieved by transmitting a master code (MC) with the same clock frequency and carrier as the communication signals, wherein the master code (MC) is transmitted continuously and with greater power than that of the return link signals, and wherein the user voice activated message transmission carrier is broken during the pauses in a message. The invention relates in particular to a mobile satellite communications system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.