US 11,722,350 B2
Systems and methods for synchronize word correlation
L. Carl Christensen, South Jordan, UT (US); and Ihab Francis, South Jordan, UT (US)
Assigned to L3HARRIS TECHNOLOGIES, INC., Melbourne, FL (US)
Filed by L3Harris Technologies, Inc., Melbourne, FL (US)
Filed on Nov. 15, 2021, as Appl. No. 17/526,387.
Prior Publication US 2023/0155877 A1, May 18, 2023
Int. Cl. H04L 27/26 (2006.01)
CPC H04L 27/2663 (2013.01) [H04L 27/2671 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method for synchronize word correlation, comprising:
obtaining, by a correlator, first values that each indicate a likelihood or probability that a respective timeslot in a symbol timing window of a carrier wave is meant or expected to include energy;
multiplying, by the correlator, the first values respectively by correlation coefficients to produce a plurality of products, wherein at least one of the correlation coefficients comprises a negative coefficient value;
generating, by the correlator, a correlation value by combining the products together;
determining, by the correlation, whether a synchronization word has been detected with a given amount of likelihood based on the correlation value; and
causing, by the correlator, symbol timing synchronization at a receiver when a determination is made that the synchronization word has been detected with the given amount of likelihood based on the correlation value.