Mobile satellite communication system utilizing polarization diversity combining
US7043198B2 · kind B2 · utility
6Cited by
20References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 6, 2002 |
| Grant date | May 9, 2006 |
| Priority date | — |
| Expiry date | Jun 25, 2024 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02D30/70
- 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.