Granted Patent B2

US 7,970,345 · App. 11/472,079 · Granted Jun 28, 2011

Abstract

Claims (38)

1. A method of transmitting an information signal in a satellite communications system, the method comprising:

splitting the information signal into a first signal component comprising a first bandwidth and a second signal component comprising a second bandwidth, wherein the first and second bandwidths differ therebetween;

transmitting the first signal component to a first system element of the satellite communications system;

transmitting the second signal component to a second system element of the satellite communications system;

transmitting the first signal component from the first system element to the second system element;

combining the first signal component with the second signal component at the second system element to form a combined signal; and

transmitting the combined signal from the second system element to a destination receiver.

2. The method of claim 1 , further comprising forming a waveform representative of the information signal; wherein splitting the information signal comprises splitting the waveform into a first waveform, and wherein transmitting the first signal component comprises transmitting the first waveform and transmitting the second signal component comprises transmitting the second waveform.

3. The method of claim 2 , wherein splitting the waveform comprises filtering the waveform, and wherein transmitting the first waveform comprises modulating a first carrier signal with the first waveform and transmitting the modulated carrier signal to the first system component, and wherein transmitting the second waveform comprises modulating a second carrier signal with the second waveform and transmitting the modulated carrier signal to the second system component.

4. The method of claim 1 , wherein a bandwidth of the combined signal exceeds a bandwidth capability of one of the first system element or the second system element.

5. The method of claim 1 , wherein the information signal comprises a digital information signal, and wherein splitting the information signal comprises splitting the digital information signal into a first digital information stream and a second digital information stream; and

wherein transmitting the first signal component comprises transmitting the first digital information stream to the first system element, and wherein transmitting the second signal component comprises transmitting the second digital information stream to the second system element.

6. The method of claim 5 , further comprising interleaving and/or encoding the digital information signal prior to splitting the digital information signal into the first digital information stream and the second digital information stream.

7. The method of claim 1 , wherein the first system element comprises a first satellite, the second system element comprises a second satellite, and the destination receiver comprises a radioterminal and/or a satellite gateway.

8. A communications system comprising:

a waveform generator configured to generate a waveform representative of an information signal; and

a waveform splitter configured to split the waveform into a first signal component comprising a first bandwidth and a second signal component comprising a second bandwidth, wherein the first and second bandwidths differ therebetween, configured to transmit the first signal component to a first system element of the communications system; and configured to transmit the second signal component to a second system element of the communications system, wherein the first system element comprises a first satellite and the second system element comprises a second satellite,

wherein the first satellite is configured to transmit the first signal component and the second satellite is configured to transmit the second signal component, and

wherein the second satellite is configured to receive the first signal component from the first satellite, and wherein the second satellite is further configured to combine the first signal component with the second signal component to form a combined signal and to transmit the combined signal to a destination receiver.

9. A communications system comprising:

a waveform generator configured to generate a waveform representative of an information signal;

a waveform splitter configured to split the waveform into a first signal component comprising a first bandwidth and a second signal component comprising a second bandwidth, wherein the first and second bandwidths differ therebetween; and

a transmitter configured to transmit the first signal component to a first system element of the communications system, and configured to transmit the second signal component to a second system element of the communications system,

wherein the first system element comprises a first satellite and the second system element comprises a second satellite,

wherein the first satellite is configured to transmit the first signal component to the second satellite, and

wherein the second satellite is configured to combine the first signal component with the second signal component, configured to recover the information signal from the first signal component that is combined with the second signal component, and configured to transmit the recovered information signal to a destination receiver.

10. A communications system comprising:

an information splitter configured to split an information signal into a first information signal component comprising a first bandwidth and a second information signal component comprising a second bandwidth, wherein the first and second bandwidths differ therebetween;

a first transmitter configured to transmit the first information signal component to a first system element of the communications system; and

a second transmitter configured to transmit the second information signal component to a second system element of the communications system,

wherein the first system element comprises a first satellite and the second system element comprises a second satellite,

wherein the first satellite is configured to receive the first information signal component and to transmit the first information signal component to the second satellite,

wherein the second satellite is configured to receive the second information signal component, and

wherein the second satellite is configured to combine the first information signal component with the second information signal component, configured to recover the information signal from the first information signal component that has been combined with the second information signal component, and configured to transmit the recovered information signal to a destination receiver.

11. The communication system of claim 10 , wherein the first satellite is configured to transmit the first information signal component in a transmission channel, and

wherein the second satellite is configured to transmit the second information signal in the same transmission channel after the transmission of the first information signal component has finished.

12. The communications system of claim 10 , wherein the first satellite is configured to transmit the first information signal component in a first time slot in a first transmission channel, and wherein the second satellite is configured to transmit the second information signal component in a second time slot in a second transmission channel.

13. The communications system of claim 12 , wherein the first time slot of the first transmission channel and the second time slot of the second transmission channel are separated by a sufficient time interval to permit a receiver to tune between a frequency of the first transmission channel and a frequency of the second transmission channel.

Assignments (18)