US 12,463,848 B1
Systems and methods for data channel estimation in fifth generation new radio physical uplink shared channels
Weizhong Chen, Georgetown, TX (US); Krishna Srikanth Gomadam, San Jose, CA (US); and Djordje Tujkovic, Los Altos, CA (US)
Assigned to Meta Platforms Technologies, LLC, Menlo Park, CA (US)
Filed by Meta Platforms Technologies, LLC, Menlo Park, CA (US)
Filed on Mar. 31, 2023, as Appl. No. 18/194,334.
Claims priority of provisional application 63/326,232, filed on Mar. 31, 2022.
Int. Cl. H04L 25/02 (2006.01)
CPC H04L 25/0224 (2013.01) [H04L 25/0204 (2013.01); H04L 25/022 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A computer-implemented method comprising:
receiving, as part of a data channel estimation operation, a frequency-domain channel estimation signal comprising a sequence of demodulation reference signal (DMRS) channels;
generating, based on the sequence of DMRS channels, an augmented DMRS channel sequence by generating:
based on an edge DMRS channel and an additional DMRS channel included in the sequence of DMRS channels, an extended DMRS channel sequence comprising a plurality of extended DMRS channels that extend a frequency range of the sequence of DMRS channels;
based on at least one interpolation matrix and the extended DMRS channel sequence, an extrapolated DMRS channel sequence comprising a plurality of extrapolated DMRS channels that further extend the frequency range of the sequence of DMRS channels; and
interpolating, via a low-pass filter sampled at a sample interval, a data channel based on the augmented DMRS channel sequence.