Preprint
Sep 2026
Exact Payload-Decoupling Conditions for Pilot-Only BEM Channel Estimation With Application to OTFS
In high-mobility doubly dispersive links, basis expansion models (BEMs) reduce channel dimensionality, yet unknown payload symbols generally contaminate conventional matched-pilot channel estimates. This paper establishes the exact conditions under which such estimates become payload-independent and derives a pilot, gu...
Gianmarco Romano, Francesco A. N. Palmieri, Stefano Buzzi et al.
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