| 摘要 |
Positions of a group of points of code shift including a plurality of points of code shift and present in each code-shift site of a multi-valued FSK code are identified, a point of code shift correction amount including an amount of displacement between a center point of code shift centered among the group of points of code shift in a direction of time axis and each of the points of code shift is calculated based on the identified positions of the points of code shift, and the point of code shift is corrected on a time axis based on the calculated point of code shift correction amount.
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