US 11,671,793 B2
Channel frequency response reconstruction assisted time-of-arrival estimation method
Ziming He, Barnet (GB); and Fei Tong, Bassingbourn (GB)
Assigned to SAMSUNG ELECTRONICS CO., LTD., Suwon-si (KR)
Filed by SAMSUNG ELECTRONICS CO., LTD., Suwon-si (KR)
Filed on May 6, 2021, as Appl. No. 17/313,473.
Claims priority of application No. 10-2020-0172607 (KR), filed on Dec. 10, 2020.
Prior Publication US 2022/0191646 A1, Jun. 16, 2022
Int. Cl. H04W 4/029 (2018.01); G01S 5/10 (2006.01)
CPC H04W 4/029 (2018.02) [G01S 5/10 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method comprising:
receiving a training signal over a set of active frequencies
estimating a number of radio propagation paths and a fading coefficient of each of the radio propagation paths based on a channel frequency response value estimated from the received training signal;
reconstructing the channel frequency response value for a set of null frequencies based on the number of radio propagation paths and the fading coefficient of each of the radio propagation paths;
estimating a time-of-arrival parameter based on the reconstructed channel frequency response value; and
performing a localization procedure based on the estimated time-of-arrival parameter.