Methods and systems for increasing bandwidth efficiency in satellite communications
First Claim
1. A method for providing bandwidth efficiency in a satellite communication system, the method comprising:
- receiving, at a satellite and from a plurality of user ground terminals, a plurality of source signals, wherein each of the source signals is modulated according to at least one source modulation method;
further receiving, at the satellite and from the plurality of user ground terminals, a plurality of information signals corresponding to the plurality of source signals;
combining, at the satellite, the plurality of source signals into a combined source signal with an overlapping bandwidth, wherein each of the source signals is further modulated according to at least one predetermined modulation method before the source signals are combined; and
transmitting, by a downlink transmission from the satellite to a gateway ground station, the combined source signal, wherein the downlink transmission comprises information specifying the at least one predetermined modulation method.
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Accused Products
Abstract
Methods and systems are provided for increasing bandwidth efficiency in satellite communications. In some embodiments, a satellite communications method is provided that comprises receiving, at a satellite and from a plurality of user ground terminals, a plurality of source signals, wherein each of the source signals are modulated according to at least one source modulation method, and further receiving, at a satellite and from a plurality of user ground terminals, a plurality of information signals corresponding to the plurality of source signals. The method further includes combining, at the satellite, the plurality of source signals into a combined source signal with an overlapping bandwidth, wherein each of the source signals are further modulated according to at least one predetermined modulation method before they are combined, and transmitting, by a downlink transmission from the satellite to a gateway ground station, the combined source signal.
20 Citations
24 Claims
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1. A method for providing bandwidth efficiency in a satellite communication system, the method comprising:
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receiving, at a satellite and from a plurality of user ground terminals, a plurality of source signals, wherein each of the source signals is modulated according to at least one source modulation method; further receiving, at the satellite and from the plurality of user ground terminals, a plurality of information signals corresponding to the plurality of source signals; combining, at the satellite, the plurality of source signals into a combined source signal with an overlapping bandwidth, wherein each of the source signals is further modulated according to at least one predetermined modulation method before the source signals are combined; and transmitting, by a downlink transmission from the satellite to a gateway ground station, the combined source signal, wherein the downlink transmission comprises information specifying the at least one predetermined modulation method. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A system capable of providing bandwidth efficiency in satellite communications, the system comprising:
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one or more receiving antennas that receive, at a satellite and from a plurality of user ground terminals, a plurality of source signals, wherein each of the source signals is modulated according to at least one source modulation method; and
a plurality of information signals corresponding to the plurality of source signals;one or more digital signal processors that combine, at the satellite, the plurality of source signals into a combined source signal with an overlapping bandwidth, wherein each of the source signals is further modulated according to at least one predetermined modulation method before the source signals are combined; and one or more transmitting antennas that transmit, by a downlink transmission from the satellite to a gateway ground station, the combined source signal, wherein the downlink transmission comprises information specifying the at least one predetermined modulation method. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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19. A non-transitory computer-readable medium storing instructions executable by one or more hardware processors to carry out operations comprising:
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receiving, at a satellite and from a plurality of user ground terminals, a plurality of source signals, wherein each of the source signals is modulated according to at least one source modulation method; further receiving, at the satellite and from the plurality of user ground terminals, a plurality of information signals corresponding to the plurality of source signals; combining, at the satellite, the plurality of source signals into a combined source signal with an overlapping bandwidth, wherein each of the source signals is further modulated according to at least one predetermined modulation method before the source signals are combined; and transmitting, by a downlink transmission from the satellite to a gateway ground station, the combined source signal, wherein the downlink transmission comprises information specifying the at least one predetermined modulation method. - View Dependent Claims (20, 21, 22, 23, 24)
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Specification