| 摘要 |
On detecting a carrier frequency error in a received signal, a correlation unit (12) detects a correlated signal in signals which a transmission unique word signal in the received signal and a local unique word signal are differentially detected. A frequency fine detection unit (17) detects a fine frequency error by using the correlated signal and a frame timing signal. A frequency coarse detection unit (21) detects a coarse frequency error by using the buffered signal from a data buffer (20) and the frame timing signal. A first adder (25) adds the fine frequency error to the coarse frequency error to a first added signal. A second adder (31) adds the first added signal to a maximum power frequency detected by a maximum power frequency detection unit (27) to produce the carrier frequency error. <IMAGE> |
