S-Opt and Z-Opt deliver near-optimal 2D Grassmannian constellations via sphere packing and polygon stacking on the Bloch sphere, paired with linear-complexity detectors.
Boosting spectral efficiency with data-carrying reference signals on the Grassmann manifold,
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Z-Opt: A Near-Optimal Reduced-Complexity Two-Dimensional Grassmannian Constellation
S-Opt and Z-Opt deliver near-optimal 2D Grassmannian constellations via sphere packing and polygon stacking on the Bloch sphere, paired with linear-complexity detectors.