WO2008048807A3 - Forward and reverse calibration for ground-based beamforming - Google Patents
Forward and reverse calibration for ground-based beamforming Download PDFInfo
- Publication number
- WO2008048807A3 WO2008048807A3 PCT/US2007/080720 US2007080720W WO2008048807A3 WO 2008048807 A3 WO2008048807 A3 WO 2008048807A3 US 2007080720 W US2007080720 W US 2007080720W WO 2008048807 A3 WO2008048807 A3 WO 2008048807A3
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- calibration
- links
- return
- variations
- gateway
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/204—Multiple access
- H04B7/2041—Spot beam multiple access
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/185—Space-based or airborne stations; Stations for satellite systems
- H04B7/1851—Systems using a satellite or space-based relay
- H04B7/18513—Transmission in a satellite or space-based system
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/0001—Arrangements for dividing the transmission path
- H04L5/0003—Two-dimensional division
- H04L5/0005—Time-frequency
- H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/16—Gateway arrangements
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- Astronomy & Astrophysics (AREA)
- Aviation & Aerospace Engineering (AREA)
- General Physics & Mathematics (AREA)
- Radio Relay Systems (AREA)
Abstract
Methods and systems for calibrating the return and forward links of a satellite communication system are provided according to embodiments of the invention. The phase and/or amplitude variations caused by the return and forward links are calculated and/or estimated to aid in beamforming, such as ground-based beamforming. Calibration earth stations, distributed within one or more beam patterns, may be used to transmit calibration codes to the gateway to calibrate the return link. Return links variations may be estimated using a weighted minimum mean square algorithm at the gateway. Forward links may be calibrated with calibration codes transmitted from the gateway through a hybrid matrix to at least one calibration station. Forward calibration links may also calibrate for temperature-dependent signal variations such as diplexer variations at the satellite.
Priority Applications (8)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/596,609 US8331329B2 (en) | 2006-10-06 | 2007-10-08 | Forward and reverse calibration for ground-based beamforming |
EP07863402A EP2074711A2 (en) | 2006-10-06 | 2007-10-08 | Forward and reverse calibration for ground-based beamforming |
US13/710,063 US9025591B2 (en) | 2006-10-06 | 2012-12-10 | Forward and reverse calibration for ground-based beamforming |
US14/682,938 US9768859B2 (en) | 2006-10-06 | 2015-04-09 | Forward and reverse calibration for ground-based beamforming |
US15/704,873 US10516475B2 (en) | 2006-10-06 | 2017-09-14 | Forward and reverse calibration for ground-based beamforming |
US16/677,443 US10892820B2 (en) | 2006-10-06 | 2019-11-07 | Forward and reverse calibration for ground-based beamforming |
US17/117,679 US11456802B2 (en) | 2006-10-06 | 2020-12-10 | Forward and reverse calibration for ground-based beamforming |
US17/890,400 US11855751B2 (en) | 2006-10-06 | 2022-08-18 | Forward and reverse calibration for ground-based beamforming |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US82853906P | 2006-10-06 | 2006-10-06 | |
US60/828,539 | 2006-10-06 |
Related Child Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12/596,609 A-371-Of-International US8331329B2 (en) | 2006-10-06 | 2007-10-08 | Forward and reverse calibration for ground-based beamforming |
US13/710,063 Division US9025591B2 (en) | 2006-10-06 | 2012-12-10 | Forward and reverse calibration for ground-based beamforming |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2008048807A2 WO2008048807A2 (en) | 2008-04-24 |
WO2008048807A3 true WO2008048807A3 (en) | 2009-04-16 |
Family
ID=39314726
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US2007/080720 WO2008048807A2 (en) | 2006-10-06 | 2007-10-08 | Forward and reverse calibration for ground-based beamforming |
Country Status (3)
Country | Link |
---|---|
US (7) | US8331329B2 (en) |
EP (1) | EP2074711A2 (en) |
WO (1) | WO2008048807A2 (en) |
Families Citing this family (26)
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WO2008048807A2 (en) | 2006-10-06 | 2008-04-24 | Viasat, Inc. | Forward and reverse calibration for ground-based beamforming |
DE102010007273A1 (en) * | 2009-11-18 | 2011-06-01 | Siemens Aktiengesellschaft | Method and arrangement for stabilizing a color coding method in an optical transmission of data |
US8494445B2 (en) * | 2010-02-03 | 2013-07-23 | Viasat, Inc. | Flexible coverage areas for forward link signals in a spot beam satellite communication system |
US8427368B1 (en) | 2010-03-19 | 2013-04-23 | RKF Engineering Solutions, LLC | Amplitude calibration with pointing correction |
US8923756B1 (en) * | 2010-03-19 | 2014-12-30 | RKF Engineering Solutions, LLC | Calibration of amplitude and phase |
WO2011144607A1 (en) * | 2010-05-17 | 2011-11-24 | Siemens Aktiengesellschaft | Method and arrangement for stabilizing a colour coding method for optical transmission of data |
DE102011106507A1 (en) * | 2011-06-15 | 2012-12-20 | Astrium Gmbh | Device for locating and tracking vehicles |
FR2978835B1 (en) * | 2011-08-05 | 2013-08-09 | Thales Sa | SATELLITE PAYLOAD FOR INCREASE SYSTEMS |
US10149205B2 (en) * | 2012-01-20 | 2018-12-04 | Tejas Networks Ltd. | Bearer management |
US9876562B2 (en) * | 2013-01-15 | 2018-01-23 | Empire Technology Development Llc | Beamspace-frequency adaptive processing for satellite communications |
US9293820B2 (en) * | 2013-03-13 | 2016-03-22 | The Boeing Company | Compensating for a non-ideal surface of a reflector in a satellite communication system |
US20140269449A1 (en) * | 2013-03-15 | 2014-09-18 | Qualcomm Incorporated | Full-duplex wireless transceiver with hybrid circuit and reconfigurable radiation pattern antenna |
US10312984B2 (en) * | 2014-04-16 | 2019-06-04 | Massachusetts Institute Of Technology | Distributed airborne beamforming system |
US9848370B1 (en) * | 2015-03-16 | 2017-12-19 | Rkf Engineering Solutions Llc | Satellite beamforming |
US10128939B2 (en) | 2015-04-10 | 2018-11-13 | Viasat, Inc. | Beamformer for end-to-end beamforming communications system |
US10355774B2 (en) | 2015-04-10 | 2019-07-16 | Viasat, Inc. | End-to-end beamforming system |
PL3651378T3 (en) | 2015-04-10 | 2022-11-21 | Viasat Inc. | Ground based antenna beamforming for communications between access nodes and users terminals linked by a relay such as a satellite |
KR102258635B1 (en) * | 2016-10-21 | 2021-05-31 | 비아셋, 인크 | Terrestrial beamforming communication using mutually synchronized spatial multiplexing feeder links |
US10826596B2 (en) * | 2017-07-28 | 2020-11-03 | Hughes Network Systems, Llc | Placement of calibration earth stations for ground based beam forming in a satellite system |
US10361762B2 (en) * | 2017-12-06 | 2019-07-23 | Space Systems/Loral, Llc | Calibration of satellite beamforming channels |
US10320349B1 (en) | 2017-12-06 | 2019-06-11 | Space Systems/Loral, Llc | Multiport amplifier input network with compensation for output network gain and phase frequency response imbalance |
US10284308B1 (en) | 2017-12-06 | 2019-05-07 | Space Systems/Loral, Llc | Satellite system calibration in active operational channels |
JP6847066B2 (en) * | 2018-02-09 | 2021-03-24 | 三菱電機株式会社 | Antenna calibration method |
US20210210841A1 (en) * | 2020-01-06 | 2021-07-08 | The Boeing Company | System and method for calibrating an antenna |
FR3108005B1 (en) * | 2020-03-05 | 2022-03-11 | Airbus Defence & Space Sas | Device and system for receiving ADS-B messages by a satellite in orbit |
US11451288B2 (en) | 2020-07-07 | 2022-09-20 | Skylo Technologies, Inc. | Control of antenna steering of a wireless device |
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US4653053A (en) * | 1984-05-11 | 1987-03-24 | Harris Corporation | Performance monitoring of antijam satellite communication network |
US6262659B1 (en) * | 1998-03-03 | 2001-07-17 | General Electric Company | Telemetry of diagnostic messages from a mobile asset to a remote station |
US6792212B1 (en) * | 1997-06-17 | 2004-09-14 | The Boeing Company | Spacecraft data acquisition and distribution interface |
US6813476B1 (en) * | 2000-11-13 | 2004-11-02 | Andrew Corporation | Method and system for compensating for atmospheric fading in a communications system |
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-
2007
- 2007-10-08 WO PCT/US2007/080720 patent/WO2008048807A2/en active Application Filing
- 2007-10-08 EP EP07863402A patent/EP2074711A2/en not_active Withdrawn
- 2007-10-08 US US12/596,609 patent/US8331329B2/en active Active
-
2012
- 2012-12-10 US US13/710,063 patent/US9025591B2/en active Active
-
2015
- 2015-04-09 US US14/682,938 patent/US9768859B2/en active Active
-
2017
- 2017-09-14 US US15/704,873 patent/US10516475B2/en active Active
-
2019
- 2019-11-07 US US16/677,443 patent/US10892820B2/en active Active
-
2020
- 2020-12-10 US US17/117,679 patent/US11456802B2/en active Active
-
2022
- 2022-08-18 US US17/890,400 patent/US11855751B2/en active Active
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4653053A (en) * | 1984-05-11 | 1987-03-24 | Harris Corporation | Performance monitoring of antijam satellite communication network |
US6792212B1 (en) * | 1997-06-17 | 2004-09-14 | The Boeing Company | Spacecraft data acquisition and distribution interface |
US6262659B1 (en) * | 1998-03-03 | 2001-07-17 | General Electric Company | Telemetry of diagnostic messages from a mobile asset to a remote station |
US6813476B1 (en) * | 2000-11-13 | 2004-11-02 | Andrew Corporation | Method and system for compensating for atmospheric fading in a communications system |
Also Published As
Publication number | Publication date |
---|---|
US8331329B2 (en) | 2012-12-11 |
US10516475B2 (en) | 2019-12-24 |
EP2074711A2 (en) | 2009-07-01 |
US9768859B2 (en) | 2017-09-19 |
US20130100879A1 (en) | 2013-04-25 |
US20100177678A1 (en) | 2010-07-15 |
US20160087714A1 (en) | 2016-03-24 |
WO2008048807A2 (en) | 2008-04-24 |
US11456802B2 (en) | 2022-09-27 |
US11855751B2 (en) | 2023-12-26 |
US20200076498A1 (en) | 2020-03-05 |
US20180183512A9 (en) | 2018-06-28 |
US20210099227A1 (en) | 2021-04-01 |
US10892820B2 (en) | 2021-01-12 |
US20180019810A1 (en) | 2018-01-18 |
US20220407591A1 (en) | 2022-12-22 |
US9025591B2 (en) | 2015-05-05 |
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