US 11,996,874 B1
System and method of determining interfering signal parameters
David R. Keller, Herriman, UT (US); L. Andrew Gibson, Jr., Riverton, UT (US); Alexander Kimani, Grantsville, UT (US); and Lance Lindsay, Woods Cross, UT (US)
Assigned to L3HARRIS TECHNOLOGIES, INC., Melbourne, FL (US)
Filed by L3Harris Technologies, Inc., Melbourne, FL (US)
Filed on Jan. 13, 2023, as Appl. No. 18/154,288.
Int. Cl. H04B 1/10 (2006.01); H04B 1/12 (2006.01)
CPC H04B 1/1027 (2013.01) [H04B 1/12 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A method for mitigating an effect of interference in a receiver, comprising:
receiving, by the receiver, a signal having a first interfering signal component;
generating, by the receiver, a replicated signal of interest using known parameters;
iteratively performing the following first stage operations by the receiver to obtain a plurality of first residual errors for the first interfering signal component:
modifying an amplitude of the replicated signal of interest;
obtaining a first reference signal by removing the replicated signal of interest with the modified amplitude from the received signal;
analyzing the first reference signal to obtain an estimated carrier frequency and an estimated symbol rate for the first interfering signal component;
generating a remaining signal by removing, from the first reference signal, a signal having the estimated carrier frequency and the estimated symbol rate; and
determining a residual error of the remaining signal;
setting refined parameters for the first interfering signal component equal to the estimated carrier frequency and the estimated symbol rate that are associated with a lowest one of the plurality of first residual errors.