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Multi-band satellite and/or ancillary terrestrial component radioterminal communications systems and methods with diversity operation

  • US 20050227618A1
  • Filed: 02/18/2005
  • Published: 10/13/2005
  • Est. Priority Date: 03/22/2004
  • Status: Active Grant
First Claim
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1. A satellite radioterminal communications system comprising:

  • a first space-based component that is configured to communicate with a first radioterminal over a first forward link using a first band of frequencies and over a first return link using a second band of frequencies;

    a second space-based component that is configured to communicate with a second radioterminal over a second forward link using a third band of frequencies and over a second return link using a fourth band of frequencies and to receive return link communications from the first radioterminal over the first return link using the second band of frequencies wherein the first and third bands of frequencies comprise substantially different portions of a common frequency band and/or substantially different portions of at least two different frequency bands; and

    a return link diversity combiner that is configured to combine return link communications received from the first radioterminal at the first and second space-based components.

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