Patent ID: 8649454

Claim:
A receiving apparatus comprising: a receiving unit configured to receive a packet signal having a first known signal followed by a second known signal, wherein the second known signal contains a first symbol and a second symbol placed sequentially; a detector configured to detect the receiving of the first known signal in the packet signal received by the receiving unit; a first processing unit configured to set a first window and detect the arrival timing of the first symbol in the first window, when the detector detects the receiving of the first known signal; a second processing unit configured to terminate the first window, configured to set a second window whose period is shorter than that of the first window, and configured to detect correction timing, relative to the arrival timing, in the second window, when the first processing unit detects the arrival timing; and an estimation unit configured to change the correction timing to the arrival timing if the second processing unit detects the correction timing and if the correction timing is more likely to be accurate than the arrival timing detected by the first processing unit.