| 摘要 |
PROBLEM TO BE SOLVED: To correct a delay time difference between signals and to suppress deterioration of a reception characteristic even if input timing of the signal differs due to a difference in a radiowave transmissions path length and a cable length between reception antenna branches. SOLUTION: A delay correction portion 15-1 detects a reception antenna branch (reference branch) whose symbol start timing is delayed the most, stores data in a buffer to delay it and adjusts symbol timing. A delay correction portion 15-2 detects a reception antenna branch (reference branch) whose frame start timing is delayed the most, stores data in the buffer to delay it and adjusts frame timing. A delay correction portion 15-3 stores respective data in the buffer and reads them after they are delayed by a prescribed delay amount. When a symbol number is determined to be duplicate, a read pointer is changed by considering that data of a new reception antenna branch is delayed the most. COPYRIGHT: (C)2012,JPO&INPIT |
