Method and apparatus for adjusting pre-distortion coefficient

摘要

A pre-distortion coefficient corresponding to a transmit power currently set by a transmitting end is adjusted. A signal received quality report which is obtained according to the pre-distortion coefficient before adjustment is analyzed and fed back by a receiving end and a signal received quality report that is obtained according to the pre-distortion coefficient after adjustment and fed back by the receiving end. The analysis determines a variation situation of signal received quality of the receiving end. If the signal received quality of the receiving end becomes better, the pre-distortion coefficient after adjustment is used as the pre-distortion coefficient corresponding to the transmit power currently set by the transmitting end. The process then returns to the step of adjusting a pre-distortion coefficient corresponding to a transmit power currently set by a transmitting end.

主权项

1. A method for adjusting a pre-distortion coefficient, the method comprising:
adjusting a pre-distortion coefficient corresponding to a transmit power currently set by a transmitting end to be a pre-distortion coefficient corresponding to the transmit power which is assumed to be increased by N adjustment steps, wherein N is an assumed number of increase times of the transmit power; analyzing a signal received quality report that is obtained according to the pre-distortion coefficient before adjustment and fed back by a receiving end and a signal received quality report which is obtained according to the pre-distortion coefficient after adjustment and fed back by the receiving end, the analyzing determining whether a signal received quality of the receiving end becomes better or worse; if the signal received quality of the receiving end becomes better, using the pre-distortion coefficient after adjustment as the pre-distortion coefficient corresponding to the transmit power currently set by the transmitting end, and then returning to the step of adjusting the pre-distortion coefficient corresponding to a transmit power currently set by a transmitting end; and if the signal received quality of the receiving end becomes worse, using the pre-distortion coefficient before adjustment as the pre-distortion coefficient corresponding to the transmit power currently set by the transmitting end; wherein, before adjusting the pre-distortion coefficient, the method further comprises:
adopting the pre-distortion coefficient before adjustment to perform pre-distortion processing for a baseband signal, to generate a pre-distorted baseband signal;converting the pre-distorted baseband signal that is generated according to the pre-distortion coefficient after adjustment into a radio-frequency signal;transmitting the converted signal to the receiving end; andreceiving the signal received quality report fed back by the receiving end; wherein, after adjusting the pre-distortion coefficient, the method further comprises:
adopting the pre-distortion coefficient after adjustment to perform pre-distortion processing for the baseband signal, to generate a pre-distorted baseband signal;converting the pre-distorted baseband signal that is generated according to the pre-distortion coefficient before adjustment into a radio-frequency signal;transmitting the converted signal to the receiving end; andreceiving the signal received quality report fed back by the receiving end.