| 摘要 |
PROBLEM TO BE SOLVED: To provide a phase detection circuit which eliminates a need of using plural receivers to suppress the extension of the circuit scale of a receiver at the time of using the phase detection circuit to realize multi-carrier transmission. SOLUTION: In this detection circuit, a signal transmitted with plural carriers is orthogonally detected by an orthogonal detection circuit 1, and a filter bank 2 outputs a signal in the band of each carrier, and a first multiplexer 3 outputs respective signals in order, and a phase detection circuit 4 calculates the phase, and a phase detection circuit 5 differentiates the phase with respect to time, and a channel-classified frequency offset generation circuit 6 and an adder 7 correct the signal in each band. A demultiplexer 8 and plural integral discharge circuits 9 integrate the phase difference corresponding to each carrier in one symbol time, and a second multiplexer 10 outputs integral values in order, and a discrimination circuit 11 reproduces and outputs demodulation data from inputted integral values. |
