US 12,224,891 B2
Method and apparatus for performing efficient correlation computation between data sequence and both of in-phase code sequence and quadrature code sequence
Kun-Tso Chen, Hsinchu (TW)
Assigned to MEDIATEK INC., Hsinchu (TW)
Filed by MEDIATEK INC., Hsin-Chu (TW)
Filed on Jun. 15, 2023, as Appl. No. 18/210,644.
Claims priority of provisional application 63/353,091, filed on Jun. 17, 2022.
Prior Publication US 2024/0039772 A1, Feb. 1, 2024
Int. Cl. H04L 27/227 (2006.01); H04B 1/709 (2011.01); H04L 27/20 (2006.01)
CPC H04L 27/2277 (2013.01) [H04B 1/709 (2013.01); H04L 27/2082 (2013.01)] 22 Claims
OG exemplary drawing
 
22. A correlation computation apparatus comprising:
a grouping circuit, arranged to perform a grouping operation upon a data sequence according to an in-phase code sequence and a quadrature code sequence, wherein the data sequence is derived from a quadrature phase shift keying (QPSK) modulated signal;
an accumulation-based circuit, arranged to perform at least one accumulation operation upon data samples categorized into at least one data sample group by the grouping circuit, to generate at least one accumulation result; and
a processing circuit, arranged to derive a correlation value between the data sequence and both of the in-phase code sequence and the quadrature code sequence from said at least one accumulation result.