Stratospheric-based communication system having interference cancellation
First Claim
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1. A communications system comprising:
- a stratospheric platform having a payload controller and a phased array antenna having a plurality of elements for generating a first beam and a second beam; and
a gateway station in communication with said stratospheric platform, said gateway station receiving a first signal having the first beam having interference from the second beam therein and receiving a second signal having the second beam having interference from the first beam therein,said gateway station comprising a first subtracting block for subtracting said second signal from said first signal to obtain the first beam; and
said gateway station comprising a second subtracting block for subtracting said first signal from said second signal to obtain the second beam.
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Abstract
A system has a stratospheric platform with a payload controller and a phased array antenna having a plurality of elements. 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 a control signal to the stratospheric platform to communicate a scaling of the elements. The stratospheric platform configures the elements of the phased array antenna according to the scaling using adaptive interference rejections.
40 Citations
15 Claims
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1. A communications system comprising:
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a stratospheric platform having a payload controller and a phased array antenna having a plurality of elements for generating a first beam and a second beam; and a gateway station in communication with said stratospheric platform, said gateway station receiving a first signal having the first beam having interference from the second beam therein and receiving a second signal having the second beam having interference from the first beam therein, said gateway station comprising a first subtracting block for subtracting said second signal from said first signal to obtain the first beam; and said gateway station comprising a second subtracting block for subtracting said first signal from said second signal to obtain the second beam. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A communications system comprising:
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a stratospheric platform having a payload controller and an antenna having a plurality of elements for generating a first beam and a second beam; and a gateway station in communication with said stratospheric platform, said gateway station receiving a first signal having the first beam having interference from the second beam therein and receiving a second signal having the second beam having interference from the first beam therein, said gateway station weighing said second signal with a first weight to form a weighted second signal, and thereafter, said gateway station comprising a first subtracting block subtracting said second weighted signal from said first signal to obtain the first beam, wherein said first weight is a function of user position files; and said gateway station comprising a second subtracting block for subtracting said first signal from said second signal to obtain the second beam.
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15. A communications system comprising:
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a stratospheric platform having a payload controller and an antenna having a plurality of elements for generating a first beam and a second beam; and a gateway station in communication with said stratospheric platform, said gateway station receiving a first signal having the first beam having interference from the second beam therein and receiving a second signal having the second beam having interference from the first beam therein, said gateway station weighing said second signal with a first weight to form a weighted second signal, and thereafter, said gateway station comprising a first subtracting block subtracting said second weighted signal from said first signal to obtain the first beam; and said gateway station weighing said first signal with a second weight to from a first weighted signal, said gateway station comprising a second subtracting block for subtracting said first weighted signal from said second signal to obtain the second beam, said first weight and the second weight being a function of user position files.
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Specification