Downstream Broad Beam Diversity With Interference Cancellation
First Claim
1. A subscriber terminal for communicating with a gateway through more than one satellite relay comprising:
- an antenna configured to receive a composite signal from more than one satellite relay, wherein the composite signal includes a first signal that is transmitted from a first user through a first satellite, a second signal that is transmitted from the first user through a second satellite, and a third signal that is transmitted from a second user through the second satellite, wherein the first signal and the second signal are transmitted to the first and second satellites as the same signal;
an isolator module configured to isolate the third signal from the composite signal; and
an adder module configured to subtract the third signal from the composite signal.
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Accused Products
Abstract
Downstream satellite communication systems and methods are disclosed according to embodiments of the invention. According to embodiments of the invention, a composite signal may be received by a subscriber terminal that includes at least a first signal that is transmitted from a first user through a first satellite, a second signal that is transmitted from the first user through a second satellite, and a third signal that is transmitted from a second user through the second satellite. The first signal and the second signal are transmitted to the first and second satellites as the same signal from a gateway, transmitter or subscriber terminal. The third signal is isolated from the composite signal and the subtracted from the composite signal.
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Citations
19 Claims
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1. A subscriber terminal for communicating with a gateway through more than one satellite relay comprising:
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an antenna configured to receive a composite signal from more than one satellite relay, wherein the composite signal includes a first signal that is transmitted from a first user through a first satellite, a second signal that is transmitted from the first user through a second satellite, and a third signal that is transmitted from a second user through the second satellite, wherein the first signal and the second signal are transmitted to the first and second satellites as the same signal; an isolator module configured to isolate the third signal from the composite signal; and an adder module configured to subtract the third signal from the composite signal. - View Dependent Claims (2, 3)
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4. A satellite communication system comprising:
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a gateway including one or more antennas; a plurality of satellites, including at least a first and a second satellite; and a plurality of subscriber terminals in communication with the gateway through the plurality of satellites, wherein the subscriber terminal includes; an antenna configured to receive a composite signal from the plurality of satellites, wherein the composite signal includes a first signal that is transmitted from the gateway through the first satellite, a second signal that is transmitted from the gateway through the second satellite, and a third signal that is transmitted from a first user through the second satellite, wherein the first signal and the second signal are the same signal when transmitted from the gateway; an isolator module configured to isolate the third signal from the composite signal; and an adder module configured to subtract the third signal from the composite signal. - View Dependent Claims (5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A satellite communication method comprising:
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receiving a composite signal at a subscriber terminal from one or more satellites;
wherein the composite signal includes a first signal that is transmitted from a first user through a first satellite, a second signal that is transmitted from the first user through a second satellite, and a third signal that is transmitted from a second user through the second satellite, wherein the first signal and the second signal are transmitted to the first and second satellites as the same signal;isolating the third signal from the composite signal; and subtracting the third signal from the composite signal. - View Dependent Claims (16, 17)
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18. A satellite communication method comprising:
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receiving a composite signal at a subscriber terminal from at least two satellites;
wherein the composite signal includes a first primary signal that is transmitted from a first user through a first satellite, a first secondary signal that is transmitted from a second user through the first satellite, a second primary signal that is transmitted from a third user through a second satellite, and a second secondary signal that is transmitted from the second user through the second satellite, wherein the first secondary signal and the second secondary signal are transmitted to the first and second satellites as the same signal;isolating the first secondary signal from the composite signal; isolating the second secondary signal from the composite signal; subtracting the first secondary signal from the composite signal; and subtracting the second secondary signal from the composite signal. - View Dependent Claims (19)
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Specification