US 12,278,717 B2
Data-aided channel tracking for OFDM systems
Federico Penna, San Diego, CA (US); and Hongbing Cheng, San Diego, CA (US)
Assigned to Samsung Electronics Co. Ltd, (KR)
Filed by Samsung Electronics Co., Ltd., Gyeonggi-do (KR)
Filed on Apr. 28, 2023, as Appl. No. 18/141,178.
Claims priority of provisional application 63/443,126, filed on Feb. 3, 2023.
Prior Publication US 2024/0267262 A1, Aug. 8, 2024
Int. Cl. H04L 27/28 (2006.01); H04L 25/02 (2006.01)
CPC H04L 25/0236 (2013.01) [H04L 25/0214 (2013.01); H04L 25/0222 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method of performing data-aided channel tracking for a subcarrier, comprising:
obtaining a reference channel estimate (CE) at a first time instance using a reference signal;
determining, based on the obtained reference CE and based on received data symbols, a data-aided CE at a second time instance that is subsequent to the first time instance; and
sequentially determining one or more additional data-aided CEs, for one or more time instances subsequent to the second time instance, based on a data-aided CE obtained at a previous time instance and based on the received data symbols,
wherein at least one of the data-aided CE or the one or more additional data-aided CEs is determined without using the reference signal directly.