Mobile satellite communication system utilizing polarization diversity combining
US6526278B1 · kind B1 · utility
9Cited by
16References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 3, 2000 |
| Grant date | Feb 25, 2003 |
| Priority date | — |
| Expiry date | Mar 3, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B7/10
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
The present invention utilizes a dual polarization reception system (200) that utilizes the energy available in orthogonal polarizations to effectively increase link margin, thereby allowing for adequate signal quality reception in difficult environments. A co-polarized and a cross-polarized signal are separately downconverted and demultiplexed. The signals from each demultiplexed output are then sampled and weighted. The weighted samples for each polarity are combined in soft decision combining/decoding circuitry (255, 360), and this circuitry determines the most likely state of a received symbol's transmitted value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.