| 摘要 |
PROBLEM TO BE SOLVED: To provide a receiver which can change a curvature of an interpolation curved line consecutively in response to a fluctuation of a speed of a mobile to acquire a transmission line characteristic accurately, and also suppresses a trend toward a large size and a complication in the receiver. SOLUTION: When a spline interpolation is carried out to a direction of a temporal axis with respect to an SP symbol, a second-order differential value at points (points of t=t<SB>i-1</SB>, t<SB>i+2</SB>) at both ends is made as a value which is not limited to 0 complying with the speed of the mobile. With such an arrangement, it becomes possible to acquire interpolation curved lines S<SB>ia</SB>, S<SB>ib</SB>in which the curvature complies with the speed of the mobile. COPYRIGHT: (C)2009,JPO&INPIT
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