Space-Based Network Architectures for Satellite Radiotelephone Systems
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Abstract
A space-based network for a satellite radiotelephone system includes at least one receive-only satellite and at least one transmit satellite. The transmit satellite can be a transmit-only satellite or a transmit and receive satellite. The receive-only satellite(s) are configured to receive wireless communications from a radiotelephone at a location over a satellite frequency band. The transmit satellite(s) are configured to transmit wireless communications to the radiotelephone at the location over the satellite frequency band. By providing at least one receive-only satellite and at least one transmit satellite, space-based networks can offer a significant link margin, without the need to undesirably burden the radiotelephones themselves to achieve this link margin.
49 Citations
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- 48. A space-based network for a satellite radiotelephone system comprising a first number of antennas each of which is configured to receive information and a second number of antennas each of which is configured to transmit information, wherein the first number of antennas equals or exceeds the second number of antennas, at least one antenna of the first number of antennas is configured to receive information from a radiotelephone over at least two substantially orthogonal polarizations and the radiotelephone is configured to radiate electromagnetic energy substantially concurrently over each one of the least two substantially orthogonal polarizations and to radiate substantially the same information over each one of the at least two substantially orthogonal polarizations.
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51. An antenna for a space-based network, the antenna comprising:
a plurality of elements configured to receive information from a radiotelephone over at least two substantially orthogonal polarizations, wherein the radiotelephone is configured to transmit information to the antenna via at least one direct Line-of-Sight (LOS) wireless link between the radiotelephone and the antenna and the radiotelephone is further configured to radiate electromagnetic energy substantially concurrently over each one of the at least two substantially orthogonal polarizations and to radiate substantially the same information over each one of the at least two substantially orthogonal polarizations. - View Dependent Claims (52)
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Specification