降低OFDM系统峰均比的改进实值遗传PTS算法

Improved real-valued gentic algorithm of PTS technique for PAPR reducetion in OFDM system

为有效降低电力线通信正交频分复用系统峰均功率比问题,以最大效率开发利用电力线通信资源,提出了一种改进的基于遗传算法的部分传输序列技术。传统的遗传算法采用二进制编码,计算繁复且占用大量的空间,因此采用一种新的实数编码方法,在实数域上进行遗传运算。仿真结果证明,算法操作简便且收敛效果好。

In order to reduce the Peak to Average Power Ratio（PAPR） of Orthogonal Frequency Division Multiplexing（OFDM） system and develop the resource of Power Line Communication（PLC） effectively, this paper proposes a new Partial Transmit Sequence（PTS） technique based on genetic algorithm. Traditional genetic algorithm？with the binary coding？is？complicated, and？takes？up？a lot of spaces, ？using a new？real-coded？genetic operators？on？the？real number field.？The？simulation results show that？the？algorithm operation？is？simple？convergence effect.