Title:
エンドツーエンドビーム形成システム及び衛星
Document Type and Number:
Japanese Patent JP6854773
Kind Code:
B2
Abstract:
End-to-end beamforming systems include end-to-end relays and ground networks to provide communications to user terminals located in user beam coverage areas. The ground segment can include geographically distributed access nodes and a central processing system. Return uplink signals, transmitted from the user terminals, have multipath induced by a plurality of receive/transmit signal paths in the end to end relay and are relayed to the ground network. The ground network, using beamformers, recovers user data streams transmitted by the user terminals from return downlink signals. The ground network, using beamformers generates forward uplink signals from appropriately weighted combinations of user data streams that, after relay by the end-end-end relay, produce forward downlink signals that combine to form user beams.
Inventors:
Mirror mark
Bulle, Kenneth
Bulle, Kenneth
Application Number:
JP2017550921A
Publication Date:
April 07, 2021
Filing Date:
April 08, 2016
Export Citation:
Assignee:
ViaSat,Inc.
International Classes:
H04B7/185; H01Q19/12; H04B7/06; H04B7/08
Domestic Patent References:
| JP2003078464A | ||||
| JP2007507173A |
Foreign References:
| US20070281612 | ||||
| US20080051080 | ||||
| US20040259497 | ||||
| US8744344 | ||||
| EP0860952A2 |
Attorney, Agent or Firm:
Patent business corporation Kita Aoyama International