US 9,813,282 B2
Sampling phase difference compensation apparatus and method, and communication device capable of compensating sampling phase difference
Po-Hung Liu, Zhubei (TW); Tzu-Yi Yang, Zhubei (TW); Teng-Han Tsai, Zhubei (TW); and Tai-Lai Tung, Zhubei (TW)
Assigned to MStar Semiconductor, Inc., Hsinchu Hsien (TW)
Filed by MStar Semiconductor, Inc., Hsinchu Hsien (TW)
Filed on Jun. 7, 2016, as Appl. No. 15/175,121.
Claims priority of application No. 104118739 A (TW), filed on Jun. 10, 2015.
Prior Publication US 2016/0365971 A1, Dec. 15, 2016
Int. Cl. H04L 7/00 (2006.01); H04L 27/38 (2006.01)
CPC H04L 27/3863 (2013.01) 19 Claims
OG exemplary drawing
 
1. A sampling phase difference compensation apparatus, comprising:
a signal generator, generating a first signal and a second signal, outputting the first signal to a first path in a first time interval, and outputting the second signal to a second path in a second time interval, wherein the first and second time intervals are different, and the first and second paths are different;
a signal analyzer, receiving a transmitted first signal from the first path and a transmitted second signal from the second path, and performing a predetermined calculation on the transmitted first and second signals to determine a phase difference relationship between the transmitted first and second signals, wherein the phase difference relationship is associated with a frequency-dependent phase difference and a sampling phase difference, the transmitted first signal is associated with the first signal and the transmitted second signal is associated with the second signal; and
a compensator, performing a sampling phase difference compensation according to the phase difference relationship.