Fixing arc length, curving a large array shrinks its near-field region in front but grows it to the sides, and a learned AMP estimator recovers non-stationary near-field channels for arbitrary geometries.
Rate-splitting multiple access for near-field communications with imperfect CSIT and SIC
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Near-Field Communications with Different Array Geometries: Rayleigh Distance, Channel Estimation, and Transmission Design
Fixing arc length, curving a large array shrinks its near-field region in front but grows it to the sides, and a learned AMP estimator recovers non-stationary near-field channels for arbitrary geometries.