| 摘要 |
<P>PROBLEM TO BE SOLVED: To enhance precision of transmission line characteristics estimation value by removing noise components appropriately. <P>SOLUTION: The transmission line characteristics estimator comprises a transmission line characteristics estimation value operating means (a discrete Fourier transform unit 231a, a multiplier 234a, an inverse discrete Fourier transform unit 232) for calculating a transmission line characteristics estimation value h<SB>a</SB>(n) based on a given signal and a receiving pilot signal, a path detector 236 for searching an effective path from the transmission line characteristics estimation value h<SB>a</SB>(n), and a path sum calculation means (a second stage transmission line characteristics estimation value storage unit 233b, an adder 235b) for determining the transmission line characteristics estimation value h<SB>b</SB>(n) by calculating the summation of effective paths thus detected. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
