Patents by Inventor Soheil Sayegh
Soheil Sayegh has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11855751Abstract: 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.Type: GrantFiled: August 18, 2022Date of Patent: December 26, 2023Assignee: Viasat, Inc.Inventor: Soheil Sayegh
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Publication number: 20220407591Abstract: 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.Type: ApplicationFiled: August 18, 2022Publication date: December 22, 2022Inventor: Soheil Sayegh
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Patent number: 11456802Abstract: 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.Type: GrantFiled: December 10, 2020Date of Patent: September 27, 2022Assignee: Viasat, Inc.Inventor: Soheil Sayegh
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Publication number: 20210099227Abstract: 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.Type: ApplicationFiled: December 10, 2020Publication date: April 1, 2021Inventor: Soheil Sayegh
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Patent number: 10892820Abstract: 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.Type: GrantFiled: November 7, 2019Date of Patent: January 12, 2021Assignee: Viasat, Inc.Inventor: Soheil Sayegh
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Publication number: 20200076498Abstract: 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.Type: ApplicationFiled: November 7, 2019Publication date: March 5, 2020Inventor: Soheil Sayegh
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Patent number: 10516475Abstract: 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.Type: GrantFiled: September 14, 2017Date of Patent: December 24, 2019Assignee: Viasat, Inc.Inventor: Soheil Sayegh
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Publication number: 20180183512Abstract: 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.Type: ApplicationFiled: September 14, 2017Publication date: June 28, 2018Inventor: Soheil Sayegh
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Publication number: 20180019810Abstract: 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.Type: ApplicationFiled: September 14, 2017Publication date: January 18, 2018Inventor: Soheil Sayegh
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Patent number: 9768859Abstract: 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.Type: GrantFiled: April 9, 2015Date of Patent: September 19, 2017Assignee: ViaSat, Inc.Inventor: Soheil Sayegh
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Publication number: 20160087714Abstract: 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.Type: ApplicationFiled: April 9, 2015Publication date: March 24, 2016Inventor: Soheil Sayegh
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Patent number: 9025591Abstract: 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.Type: GrantFiled: December 10, 2012Date of Patent: May 5, 2015Assignee: ViaSat, Inc.Inventor: Soheil Sayegh
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Patent number: 8331329Abstract: 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.Type: GrantFiled: October 8, 2007Date of Patent: December 11, 2012Assignee: ViaSat, Inc.Inventor: Soheil Sayegh
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Publication number: 20100177678Abstract: 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.Type: ApplicationFiled: October 8, 2007Publication date: July 15, 2010Inventor: Soheil Sayegh
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Publication number: 20050063487Abstract: A digital signal processing (DSP)-based approach to parameter estimation modulation identification and interference charaterization in connection with a satellite Communication Monitoring System (CSM). The techniques descried here also allow automatic generation of satellite frequency plans (S74) without any a priori knowledge of such plans. Individual processes for carrier isolation (S71), segmentation (S72), frequency estimation (S73), symbol rate estimation, bit error rate estimation, modulation identification and interference characterization are disclosed may be combined in a totally automated process.Type: ApplicationFiled: May 8, 2002Publication date: March 24, 2005Inventor: Soheil Sayegh
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Patent number: 6175720Abstract: In a method of synchronizing mobile communication devices employed in a non-geostationary satellite communication system according to a paging time plan using geographical paging cells, a geographical region is segmented into a plurality of the geographical paging cells, the mobile communication devices are divided into subgroups according to their location in one of the geographical paging cycles. A plurality of beams are transmitted from non-geostationary satellites to the mobile communication devices positioned within the geographical paging cells according to the paging time plan. The paging time plan requires that each of the beams be transmitted in at least one frame including at least one paging cycle having a plurality of time slots. The time slots occur at fixed intervals relative to time slots occurring in paging cycles of subsequent occurring frames.Type: GrantFiled: April 10, 1996Date of Patent: January 16, 2001Assignee: Comsat CorporationInventor: Soheil Sayegh
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Patent number: 5946602Abstract: In a satellite communication system including mobile communication devices, in which each of the mobile communication devices is associated with one of a plurality of groups, a method is provided for allocating those devices. According to the method, each of the groups of mobile communication devices is first partitioned into subgroups, each of the subgroups having a queue associated therewith. Subsequently, each of the mobile communication devices is assigned to more than one subgroup having a queue corresponding thereto so as to reduce queuing delays associated with the satellite communication system. In another embodiment, a message to be received by one of the mobile communication devices is transferred to the shorter of the queues corresponding to those subgroups to which the mobile communication device has been assigned.Type: GrantFiled: April 11, 1996Date of Patent: August 31, 1999Assignee: Comsat CorporationInventor: Soheil Sayegh