US 12,439,353 B2
Phase noise compensation in a wireless system
Dumitru M. Ionescu, Poway, CA (US); Amitav Mukherjee, Elk Grove, CA (US); and Maulik V. Vaidya, Escondido, CA (US)
Assigned to Charter Communications Operating, LLC, St. Louis, MO (US)
Filed by Charter Communications Operating, LLC, St. Louis, MO (US)
Filed on Feb. 8, 2022, as Appl. No. 17/667,011.
Prior Publication US 2023/0254792 A1, Aug. 10, 2023
Int. Cl. H04W 56/00 (2009.01)
CPC H04W 56/0045 (2013.01) 34 Claims
OG exemplary drawing
 
1. A method comprising:
at a first wireless station:
receiving a first common phase error signal to compensate for: i) first phase noise associated with the first wireless station, and ii) second phase noise associated with a second wireless station;
implementing a predictive feedback compensation loop to produce a second common phase error signal, the second common phase error signal being a corrected common phase error signal derived from the first common phase error signal;
utilizing the corrected common phase error signal to adjust phases of first wireless signals communicated from the first wireless station to the second wireless station; and
wherein the first common phase error signal captures both: i) a first phase error associated with a first carrier frequency used by the first wireless station to wirelessly transmit first communications from the first wireless station to the second wireless station, and ii) a second phase error associated with a second carrier frequency used by the second wireless station to wirelessly transmit second communications from the second wireless station to the first wireless station.