摘要
自适应数字预失真技术能够解决宽带高峰均比信号经过功放产生的非线性失真问题。主要介绍了自适应数字预失真的结构、预失真器的数学模型及相关的自适应算法。仿真结果表明采用自适应数字预失真技术能够显著地改善功放输出信号的带外频谱失真,是一种有效、灵活的技术。
The broadband signal with high peak passing through the power amplifer results in the non-linear distortion.Adaptive digital pre-distortion technology can solve this problem.The paper mainly introduces the structure of adaptive digital pre-distortion,the mathematical model of pre-distortion device and the associated adaptive algorithm.The simulation results show that adaptive digital pre-distortion technology can significantly improve the band spectrum distortion of the power amplifier output signal.It＇s an effective and flexible technology.
出处
《信息技术》
2010年第9期111-113,共3页
Information Technology
关键词
数字预失真
间接学习结构
自适应算法
digital predistortion
indirect study structure
adaptive algorithm
