| 摘要 |
PROBLEM TO BE SOLVED: To enhance the accuracy of transmission path estimation, by enhancing the resolution of an adaptive filter without increasing the number of taps.SOLUTION: A data signal correction circuit includes a transmission path characteristics calculation unit for calculating a transmission path characteristics estimate of a received data signal based on a pilot signal, a path detection unit for calculating the delay amount of the multipath of the received data signal based on the transmission path characteristics estimate, and an adaptive filter receiving the delay amount and the transmission path characteristics estimate, adjusting the input interval of the transmission path characteristics estimate in the carrier direction depending on the delay amount, and performing adaptive equalization for the transmission path characteristics estimate inputted at the input interval thus adjusted. |
