| 摘要 |
Embodiments of the present invention provide a transmitter and an interference cancellation method. The transmitter provided in the embodiments of the present invention includes: a feedback cancellation module, a first digital predistorter DPD and a power amplifier PA, where the feedback cancellation module is located on a feedback channel of the transmitter, and the feedback cancellation module is separately connected to the PA and the first DPD; the feedback cancellation module is configured to perform, according to a feedback cancellation signal, interference cancellation on a signal of the feedback channel, to acquire a first mixed signal, and send the first mixed signal to the first DPD; the first DPD is configured to perform linear predistortion processing according to a first baseband signal on a first transmit channel and the first mixed signal, to generate a first predistortion signal; and the PA is configured to amplify a to-be-transmitted signal and then transmit the signal by using an antenna, where the to-be-transmitted signal is the first predistortion signal or a signal obtained according to the first predistortion signal. The embodiments of the present invention can reduce distortion of a transmit signal. |
