US 12,328,210 B1
Methods and apparatus for signal correlation using a quadratic form
Matthew Brandon Robinson, Crownsville, MD (US)
Assigned to Rampart Communications, Inc., Annapolis, MD (US)
Filed by Rampart Communications, Inc., Annapolis, MD (US)
Filed on Sep. 29, 2022, as Appl. No. 17/956,742.
Claims priority of provisional application 63/252,761, filed on Oct. 6, 2021.
Int. Cl. H04L 25/03 (2006.01)
CPC H04L 25/03165 (2013.01) 20 Claims
OG exemplary drawing
 
1. A non-transitory, processor-readable medium storing instructions that, when executed by a processor, cause the processor to:
one of:
train a machine learning (ML) model associated with a receiver, based on (1) data including a plurality of different carrier frequency offset values, (2) a matched filter, and (3) a linear transformation matrix, to produce a trained ML model, or
receive the trained ML model from a remote compute device;
receive a signal at the receiver, the signal having an associated carrier frequency offset that is not known to the receiver at the time the signal is received;
identify, at the receiver and using the trained ML model, the carrier frequency offset of the signal; and
correct the carrier frequency offset of the signal to identify a message encoded by the signal.