RECEIVER CIRCUIT AND RECEPTION METHOD

摘要

First and second transmission channel correction circuits generate a corrected data signal and a corrected control signal by executing a transmission channel correction to a data signal transmitted by a first modulation method and a control signal transmitted by a second modulation method that is more tolerant to noise than the first modulation method. The data signal and control signal are included in reception signals received by first and second antennas. First and second quality information calculation circuits calculate quality information indicating quality of the reception signal on the basis of the corrected control signal. A combination ratio calculation circuit calculates a combination ratio of the corrected data signals generated by the first and second transmission channel correction circuits, on the basis of two types of quality information calculated by the first and second quality information calculation circuits. A combination circuit executes combination at the combination ratio.

主权项

1. A receiver circuit for performing diversity combining, comprising:
a first transmission channel correction circuit configured to generate a third signal from a first signal, and a fourth signal from a second signal, by executing a transmission channel correction to the first signal and the second signal, the first signal being transmitted by a first modulation method, the second signal being transmitted by a second modulation method that is more tolerant to noise than the first modulation method, the first signal and the second signal being included in a first reception signal received by a first antenna; a first quality information calculation circuit configured to calculate first quality information indicating quality of the first reception signal on the basis of the fourth signal; a second transmission channel correction circuit configured to generate a seventh signal from a fifth signal, and an eighth signal from a sixth signal, by executing a transmission channel correction to the fifth signal and the sixth signal, the fifth signal being transmitted by the first modulation method, the sixth signal being transmitted by the second modulation method, the fifth signal and the sixth signal being included in a second reception signal received by a second antenna; a second quality information calculation circuit configured to calculate second quality information indicating quality of the second reception signal on the basis of the eighth signal; a combination ratio calculation circuit configured to calculate a combination ratio of the third signal and the seventh signal on the basis of the first quality information and the second quality information; and a combination circuit configured to combine the third signal and the seventh signal at the combination ratio.