NR-BD-RIS on LEO satellites breaks channel reciprocity to support simultaneous multi-user full-duplex beams, yielding higher DL/UL sum-rates than conventional RIS with less frequent reconfiguration.
Optimization algorithms exploiting unitary constraints,
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Enabling Full-Duplex LEO Satellite Systems with Non-Reciprocal BD-RIS-Assisted Beamforming
NR-BD-RIS on LEO satellites breaks channel reciprocity to support simultaneous multi-user full-duplex beams, yielding higher DL/UL sum-rates than conventional RIS with less frequent reconfiguration.