US 12,328,277 B2
Method and system for estimating a transmission channel of a communication link
Thomas Meyerhoff, Hamburg (DE); Martin Kasparick, Blagnac (FR); and Dennis Wieruch, Blagnac (FR)
Assigned to Airbus (S.A.S.), Blagnac (FR)
Filed by Airbus (S.A.S.), Blagnac (FR)
Filed on Jun. 8, 2022, as Appl. No. 17/835,657.
Claims priority of application No. 21179054 (EP), filed on Jun. 11, 2021.
Prior Publication US 2022/0399972 A1, Dec. 15, 2022
Int. Cl. H04L 5/00 (2006.01)
CPC H04L 5/0048 (2013.01) [H04L 5/0007 (2013.01); H04L 5/0073 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A method for estimating a transmission channel of a communication link, comprising:
receiving, through the transmission channel, a first transmission signal including a plurality of data elements and a plurality of pilots, each of the plurality of pilots being located at specified locations within a time-frequency domain of the first transmission signal, wherein the plurality of pilots comprises at least a set of pilots at a common frequency location over a time domain of the time-frequency domain;
determining a level of interference for each of the plurality of pilots, the level of interference being indicative of an extent of distortion on a respective pilot caused by a second transmission signal that varies over time and frequency interfering with the first transmission signal;
determining an interference-mitigated pilot for each pilot based on the level of interference determined for each respective pilot; and
using the interference-mitigated pilot determined for each pilot to estimate the transmission channel of the first transmission signal;
wherein determining the interference-mitigated pilot for each pilot comprises:
discarding one or more of the set of pilots that are determined to have an extent of distortion above a threshold extent of distortion; and
determining interpolated values at positions of the one or more of the set of pilots that are discarded based on remaining ones of the plurality of pilots at the common frequency location.