COEFFICIENT TRAINING DEVICE, METHOD AND SYSTEM AND BASE STATION

摘要

Disclosed are a coefficient training device, comprising: a synchronization unit for receiving a synchronization sequence transmitted via a pre-distortion module and a power backoff adjustment module within a first time period, and determining a starting location of a training sequence; a first training unit for receiving an IQ unbalanced training sequence transmitted via the pre-distortion module and the power backoff adjustment module over an emission channel within a second time period, training an IQ correction coefficient, and sending the obtained IQ correction coefficient to the pre-distortion module; and a second training unit for receiving a PA nonlinear training sequence transmitted by the pre-distortion module and the power backoff adjustment module within a third time period, training a PA correction coefficient, and sending the obtained PA correction coefficient to the pre-distortion module. Further disclosed are a coefficient training method and system and a base station. By means of the present invention, when there exists IQ unbalance, an accurate non-linear feature of a power amplifier can be obtained.