北京邮电大学学报

  • EI核心期刊

北京邮电大学学报 ›› 2014, Vol. 37 ›› Issue (4): 44-48.doi: 10.13190/j.jbupt.2014.04.010

• 论文 • 上一篇    下一篇

一种改进的限幅滤波降低PAPR算法

韩东升1,2, 杨维2, 刘薇2   

  1. 1. 华北电力大学 电气与电子工程学院, 河北 保定 071003;
    2. 北京交通大学 电子信息工程学院, 北京 100044
  • 收稿日期:2013-09-24 出版日期:2014-08-28 发布日期:2014-08-09
  • 作者简介:韩东升(1980-),男,讲师,博士,E-mail:handongsheng@ncepu.edu.cn.
  • 基金资助:

    国家自然科学基金项目(51274018,61302106);国家科技支撑计划项目(2013BAK06B03);中央高校基本科研业务费专项资金资助项目(2014MS100)

Improved Clipping and Filtering Algorithm Applied to Reduce PAPR

HAN Dong-sheng1,2, YANG Wei2, LIU Wei2   

  1. 1. School of Electrical and Electronic Engineering, North China Electric Power University, Hebei Baoding 071003, China;
    2. School of Electronic and Information Engineering, Beijing Jiaotong University, Beijing 100044, China
  • Received:2013-09-24 Online:2014-08-28 Published:2014-08-09

摘要:

针对传统正交频分复用降低峰均功率比算法计算复杂度较高,失真比较严重的问题,提出了一种改进的限幅滤波算法,该算法将正交频分复用信号划分为奇信号与偶信号来分别进行限幅滤波操作. 仿真结果表明,与传统的限幅滤波算法相比,该算法在降低PAPR性能的同时,具有较低的计算复杂度,同时能够较好地滤除带外干扰,显著提高系统的误码率的性能.

关键词: 峰均功率比, 限幅, 失真, 噪声消除

Abstract:

An improved clipping and filtering algorithm was proposed to improve the currently used algorithms for reducing PAPR of OFDM with high computational complexity and serious distortion. The algorithm divides OFDM signals into odd signals and even signals. And the two kinds of signals are clipped and filtered. Simulation shows that, in comparison with currently used clipping and filtering algorithms, the algorithm is with better PAPR performance with lower computational complexity and filters in-band interference more obviously. The BER performance of the system can be improved through the algorithm.

Key words: peak-to-average power ratio, clipping, distortion, noise cancellation

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