计算机工程与应用 ›› 2012, Vol. 48 ›› Issue (31): 73-77.

• 网络、通信、安全 • 上一篇    下一篇

降低OFDM系统峰均比的改进实值遗传PTS算法

彭继慎,孟更乐   

  1. 辽宁工程技术大学 电气与控制工程学院,辽宁 葫芦岛 125105
  • 出版日期:2012-11-01 发布日期:2012-10-30

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

PENG Jishen, MENG Gengle   

  1. College of Electrical and Control Engineering, Liaoning Technical University, Huludao, Liaoning 125105, China
  • Online:2012-11-01 Published:2012-10-30

摘要: 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。

关键词: 正交频分复用技术, 峰均功率比, 电力线通信, 实值遗传算法, 部分传输序列

Abstract: 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.

Key words: Orthogonal Frequency Division Multiplexing(OFDM), Peak to Average Power Ratio(PAPR), Power Line Communication(PLC), Real-Valued?Genetic?Algorithm(RVGA), Partial Transmit Sequence(PTS)