US 11,658,797 B2
Synchronization timing detector, wireless communication device, and non-transitory computer-readable recording medium
Kaito Arita, Yokohama (JP)
Assigned to JVCKENWOOD Corporation, Yokohama (JP)
Filed by JVCKENWOOD Corporation, Yokohama (JP)
Filed on Sep. 1, 2021, as Appl. No. 17/463,585.
Application 17/463,585 is a continuation of application No. PCT/JP2019/048446, filed on Dec. 11, 2019.
Claims priority of application No. JP2019-049897 (JP), filed on Mar. 18, 2019.
Prior Publication US 2021/0399871 A1, Dec. 23, 2021
Int. Cl. H04L 7/04 (2006.01); H04L 27/14 (2006.01)
CPC H04L 7/04 (2013.01) [H04L 7/042 (2013.01); H04L 27/14 (2013.01)] 3 Claims
OG exemplary drawing
 
1. A synchronization timing detector comprising:
n correlators configured to calculate and output correlation values between each of n sample signals and a known synchronization pattern, the n sample signals being extracted from m sample signals that are obtained by oversampling a received signal m times for one symbol period and having sample positions shifted by m/n samples each, where m is a natural number, and n is a natural number that satisfies 3≤n≤m and is a divisor of m;
a calculation unit configured to generate n correlation value vectors by arranging the correlation values output from the n correlators on polar coordinates at intervals of an angle of 2π(n/m) radians, and add the n correlation value vectors to calculate an angle of a resultant vector of the correlation value vectors; and
a symbol timing estimating unit configured to estimate a symbol timing of the received signal based on the angle of the resultant vector calculated by the calculation unit.