From simulation results, the third-order inter-modulation distortion ratio ( IMD3 ) can be reduced by-10 dB on average when a two-tone signal is input. Finally, the bias-controlled predistorter has been used in OFDM system. 从仿真结果可以总结出,当系统采用双音信号作为输入时,功率放大器输出的三阶互调失真(IMD3)可以平均减少10dB。最后,将二极管偏压控制预失真器应用于OFDM系统中。