Invention Grant
- Patent Title: Selection, diversity combining or satellite MIMO to mitigate scintillation and/or near-terrestrial multipath to user devices
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Application No.: US18080424Application Date: 2022-12-13
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Publication No.: US12009907B2Publication Date: 2024-06-11
- Inventor: Sriram Jayasimha , Jyothendar Paladugula
- Applicant: AST & Science, LLC
- Applicant Address: US FL Miami
- Assignee: AST & Science, LLC
- Current Assignee: AST & Science, LLC
- Current Assignee Address: US TX Midland
- Agency: Shumaker & Sieffert, P.A.
- Priority: IN 1911025299 2019.06.25 IN 1911026070 2019.06.29
- Main IPC: H04B7/01
- IPC: H04B7/01 ; H04B7/185

Abstract:
A ground station processes downlink signals received from respective satellites. The ground station has a plurality of signal conditioning devices each receiving a respective one of the downlink signals and providing a conditioned downlink signal. A plurality of Doppler and/or Delay compensator devices each receive a respective conditioned downlink signal from a respective one of the plurality of signal conditioning devices. The compensator devices conduct Doppler and/or Delay compensation on the received conditioned downlink signal, and provide a compensated downlink signal output. A selector or diversity combiner receives the compensated downlink signal from each of the plurality of Doppler and/or Delay compensators. The selector or diversity combiner selects one of the received compensated downlink signals based on received signal strength of each received compensated downlink signal to provide a selected downlink signal, or diversity combines all of the received compensated downlink signals to provide a diversity combined signal. The selector or diversity combiner provides the selected downlink signal or the diversity combined signal to an eNodeB.
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