Stratospheric-based communication system for mobile users using additional phased array elements for interference rejection
First Claim
1. A communications system, comprising:
- a ground station having;
a beam generator for generating a plurality of beam control signals,a digital beam former circuit receiving the beam control signals and generating a plurality of first element control signals for generating communication beams and a plurality of auxiliary element control signals for canceling interference from the side lobes of the communication beams,a multiplexer multiplexing the first element control signals, andan RF subsystem for communicating an RF signal corresponding to the first element control signals and the auxiliary element control signals;
a stratospheric platform having;
a payload receiver for receiving the RF signals,a demultiplexer demultiplexing the RF signals into a second plurality of element control signals corresponding to the first element control signals and a second plurality of auxiliary element control signals and generating a plurality of communication beams in response to the second plurality of element control signals and a plurality of auxiliary element outputs in response to the second plurality of auxiliary element control signals.
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Accused Products
Abstract
A communication system has a stratospheric platform with a payload controller and a phased array antenna having a plurality of main array elements for generating a plurality of communication beams and a plurality of auxiliary elements for canceling interference between the communication beam. A gateway station communicates with the stratospheric platform. The gateway station scales the plurality of elements to form a reconfigurable plurality of beams. The gateway station communicates an embedded control signal to the stratospheric platform to communicate a scaling of elements to form the communication beams and the auxiliary element output. The auxiliary element output is used to provide interference canceling.
115 Citations
6 Claims
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1. A communications system, comprising:
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a ground station having; a beam generator for generating a plurality of beam control signals, a digital beam former circuit receiving the beam control signals and generating a plurality of first element control signals for generating communication beams and a plurality of auxiliary element control signals for canceling interference from the side lobes of the communication beams, a multiplexer multiplexing the first element control signals, and an RF subsystem for communicating an RF signal corresponding to the first element control signals and the auxiliary element control signals; a stratospheric platform having; a payload receiver for receiving the RF signals, a demultiplexer demultiplexing the RF signals into a second plurality of element control signals corresponding to the first element control signals and a second plurality of auxiliary element control signals and generating a plurality of communication beams in response to the second plurality of element control signals and a plurality of auxiliary element outputs in response to the second plurality of auxiliary element control signals. - View Dependent Claims (2, 3, 4, 5, 6)
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Specification