Methods of reducing interference including determination of feeder link signal error and related systems
First Claim
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1. A method of reducing interference in a satellite communications system defining a feeder link between a Space-Based Component (SBC) and Ground Based Equipment (GBE), the method comprising:
- determining an error of a received feeder link signal communicated over the feeder link between the Space-Based Component (SBC) and the Ground Based Component (GBE);
pre-distorting a first feeder link signal responsive to the error of the received feeder link signal; and
transmitting the pre-distorted first feeder link signal over the feeder link between the Space-Based Component (SBC) and the Ground Based Equipment;
wherein pre-distorting the first feeder link signal responsive to the error comprises combining a measure of the first feeder link signal with a measure of a second feeder link signal that is correlated with the error of the received feeder link signal.
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Abstract
Methods of reducing interference in a satellite communications system may include receiving a plurality of feeder link signals and time aligning the plurality of feeder link signals to provide time aligned feeder link signals. At least two of the time aligned feeder link signals may be combined to provide reduced interference of at least one of the feeder link signals. Related systems are also discussed.
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15 Claims
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1. A method of reducing interference in a satellite communications system defining a feeder link between a Space-Based Component (SBC) and Ground Based Equipment (GBE), the method comprising:
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determining an error of a received feeder link signal communicated over the feeder link between the Space-Based Component (SBC) and the Ground Based Component (GBE); pre-distorting a first feeder link signal responsive to the error of the received feeder link signal; and transmitting the pre-distorted first feeder link signal over the feeder link between the Space-Based Component (SBC) and the Ground Based Equipment; wherein pre-distorting the first feeder link signal responsive to the error comprises combining a measure of the first feeder link signal with a measure of a second feeder link signal that is correlated with the error of the received feeder link signal. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A satellite communications system comprising:
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a processor configured to provide an error of a feeder link signal; and an interference reducer configured to reduce interference of the feeder link signal responsive to the error; wherein the interference reducer is further configured to calculate a weight to be applied to a second feeder link signal to provide an error correction signal, and to combine the error correction signal with a measure of the feeder link signal; wherein the processor is further configured to provide a second error of a second feeder link signal, and the interference reducer is further configured to calculate a second weight to be applied to the feeder link signal to provide a second error correction signal and to combine the second error correction signal with a measure of the second feeder link signal. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15)
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Specification