| 摘要 |
PROBLEM TO BE SOLVED: To provide a channel estimation apparatus and a channel estimation method capable of improving estimation accuracy of a channel response.SOLUTION: A reference signal replica generation section 1 generate a replica of a reference signal. A complex division section 2 performs complex division of the received signal by the replica of the received reference signal to calculate channel response estimation values. An IDFT section 3 performs conversion to time-domain channel response estimation values. A peak search section 8 searches for an impulse component at a maximum level within a predefined range from among the channel response estimation values output from the IDFT section 3. A window slide section 9 calculates a window function from some sample points around a sample point of the impulse component at the maximum level specified by the peak search section 8. A window function multiplication section 4 multiplies the channel response estimation values output from the IDFT section 3 by the window function calculated from the window slide section 9. A DFT section 5 performs conversion to frequency-domain channel response estimation values. |
