| 摘要 |
PROBLEM TO BE SOLVED: To provide a receiver capable of performing carrier reproduction according to a modulation system in a short time and with high accuracy. SOLUTION: This receiver reproducing the carrier of a modulated received signal to decode the received signal has a loop filter circuit 134 that constitutes a costas loop circuit 155 for the carrier reproduction and amplifies and filters a phase comparison signal S150, a BPSK error detection circuit 161a, a QPSK error detection circuit 161b and an 8PSK error detection circuit 161c for detecting an error in the decoded received signal, and a gain control circuit 162 for controlling the amplification gain of the circuit 134 on the basis of the results of the error. |
