Synchronization method and apparatus for multi-platform communication system
US6757546B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 21, 2000 |
| Grant date | Jun 29, 2004 |
| Priority date | — |
| Expiry date | May 4, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B7/212
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A mobile wireless communications system including a plurality of individual transponding nodes of various types, all in communication with a central processing hub. A local user signal is processed by the central processing hub and radiated through multiple paths to a plurality of the plurality of individual transponding platforms simultaneously. The signal is then re-radiated by each of the plurality of the plurality of individual transponding platforms to a mobile terminal that receives the re-radiated signal from the plurality of the plurality of individual transponding platforms coherently and in phase. The central hub synchronizes both the signals received and transmitted from each user through one or more of the transponding nodes. This synchronization is such that the relative arrival time of the PN encoded data in the user signals is synchronized to within a fraction of a chip in both the forward and return links. The central hub also synchronizes the carrier phase of the user signals to within a fraction of a wavelength in both the forward and return links.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.