| 摘要 |
<p>PROBLEM TO BE SOLVED: To realize a small-sized data receiver where a calculation quantity of a correlation calculation is decreased by adopting the correlation arithmetic operation that uses only reference symbol data required for synchronization recovery of a received OFDM modulation wave signal and data of several tens of samples before and after the reference symbol data. SOLUTION: When a null symbol start point of an OFDM signal being a base band signal is detected, a FIFO memory 4 starts storing this OFDM signal. In the case of reading the OFDM signal read by the FIFO memory 4, a read address point of the FIFO memory 4 is advanced beforehand up to an address at which data of a start point of a reference symbol in succession to a null symbol are received. Thus, the read of the FIFO memory 4 is controlled by reading sample data from the null symbol start point not needing a phase error written in the FIFO memory 4 until the reference symbol start point as dummy data so as to reduce a range to obtain a phase error.</p> |
