US 11,784,785 B2
Synchronization signal (Sync Mark) detection using multi-frequency sinusoidal (MFS) signal-based filtering
Jeffrey Grundvig, Loveland, CO (US)
Assigned to AVAGO TECHNOLOGIES INTERNATIONAL SALES PTE. LIMITED, Singapore (SG)
Filed by Broadcom International Pte. Ltd., Singapore (SG)
Filed on Apr. 25, 2022, as Appl. No. 17/728,470.
Claims priority of provisional application 63/308,941, filed on Feb. 10, 2022.
Prior Publication US 2023/0254109 A1, Aug. 10, 2023
Int. Cl. H04L 7/04 (2006.01); H04L 7/06 (2006.01)
CPC H04L 7/06 (2013.01) 20 Claims
OG exemplary drawing
 
1. A method for implementing synchronization signal (“Sync Mark”) detection, the method comprising:
detecting, using a computing system, a location of a synchronization signal (“Sync Mark”) within a data signal, by using multiple frequency sinusoidal (“MFS”) signal-based filtering and a sliding window comprising successive search windows each having a bit length corresponding to a bit length of the Sync Mark to identify a portion of the data signal having a magnitude indicative of the Sync Mark, generating a first MFS coefficient of the Sync Mark and a second MFS coefficient of the Sync Mark, and producing the data signal filtered by the first MFS coefficient and the data signal filtered by the second MFS coefficient; and
refining, using the computing system, the location of the Sync Mark within the data signal, by performing a phase measurement on the identified portion of the data signal having the magnitude indicative of the Sync Mark to identify a sub-portion of the identified portion of the data signal, the identified sub-portion having a phase indicative of the Sync Mark, the phase measurement being performed based on the MFS signal-based filtering.