一种数字基带预失真系统的硬件实现方法  

A hardware realizing method of digital baseband predistortion system

作　　者：张云翼[1] 张晓林[1] 

机构地区：[1]北京航空航天大学电子信息工程学院,北京100083

出　　处：《微计算机信息》2009年第5期249-251,共3页Control & Automation

摘　　要：正交频分复用(OFDM)因为其优良的性能在现代数字广播电视领域得到了广泛应用。但高峰均功率比(PAPR)使OFDM系统对放大器的非线性较为敏感。本文提出了一种采用分段逼近的预失真硬件实现方法。仿真结果表明,该方法能较好地补偿放大器的非线性。Orthogonal Frequency Division Multiplexing （OFDM） is widely applied in modern digital television broadcast field due to its favorable performance. However, the OFDM system is sensitive to the nonlinearity of Power Amplifier （PA） since it has the high Peak-to-Average Power Ratio （PAPR）.A hardware realizing method is proposed in this paper which is based on piecewise approxi- mating. The simulation results indicate that this method cart effectively compensate the nonlinearity of PA.

关 键 词：正交频分复用 非线性 硬件实现方法 分段逼近 

分 类 号：TN919[电子电信—通信与信息系统]