| US 7,616,723 B2 | ||
| Method for symbol timing synchronization and apparatus thereof | ||
| Chih-Yaw Wang, Huatan Township, Changhua County (Taiwan); and Chih-Chun Feng, Beigang Township, Yunlin County (Taiwan) | ||
| Assigned to Sunplus Technology Co., Ltd., Hsinchu (Taiwan) | ||
| Filed on Mar. 21, 2006, as Appl. No. 11/386,368. | ||
| Claims priority of application No. 94137426 A (TW), filed on Oct. 26, 2005. | ||
| Prior Publication US 2007/0092044 A1, Apr. 26, 2007 | ||
| Int. Cl. H04L 7/00 (2006.01) | ||
| U.S. Cl. 375—355 [375/354] | 20 Claims |
| 1. A method for symbol timing synchronization suitable for a receiver in a communication system, the method comprising:
calculating a correlation between a sample sequence and a delayed sample sequence to generate a correlation sequence;
calculating a moving average of the correlation sequence to generate a cross-correlation sequence;
differentiating the cross-correlation sequence to generate a differentiated sequence by subtracting a delayed cross-correlation
sequence from the cross-correlation sequence;
calculating a moving average of the differentiated sequence to generate a moving-averaged sequence; and
detecting a peak position of the moving-averaged sequence to obtain a correct symbol timing for synchronization;
wherein the delayed sample sequence is obtained from delaying the sample sequence by N sampling points, and N is the length
of the useful data for a symbol in the sample sequence.
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