Computer Engineering and Applications ›› 2010, Vol. 46 ›› Issue (12): 129-132.DOI: 10.3778/j.issn.1002-8331.2010.12.038

• 数据库、信号与信息处理 • Previous Articles     Next Articles

New tone reservation method for power de-rating in OFDM systems

LIANG Juan1,LI Xiao-bo2,3   

  1. 1.The Second Artillery Engineering College,Xi’an 710025,China
    2.School of Electronics & Information,Northwestern Polytechnical University,Xi’an 710129,China
    3.PLA Military Representative Office in Shenyang Aircraft Corporation,Shenyang 110850,China
  • Received:2008-10-22 Revised:2009-01-17 Online:2010-04-21 Published:2010-04-21
  • Contact: LIANG Juan

解决OFDM信号功率降额问题的子载波预留方法

梁 娟1,李晓波2,3   

  1. 1.第二炮兵工程学院,西安 710025
    2.西北工业大学 电子信息学院,西安 710129
    3.中国人民解放军驻沈阳飞机工业(集团)有限公司军事代表室,沈阳 110850
  • 通讯作者: 梁 娟

Abstract: A new tone reservation method which can solve the power de-rating problem of OFDM is proposed.This new method uses valley compensation algorithm to decrease the cubic metric and dynamic peak reduction algorithm to reduce the PAPR of OFDM signal.At the same time,the iterative algorithm is improved in order to reduce the computational cost.Simulation results show that this new method can decrease the PAPR and cubic metric effectively compared with the traditional power de-rating methods.

摘要: 针对OFDM信号功率降额问题,提出了一种新的子载波预留方法。该方法利用谷值补偿算法改善OFDM信号的立方度量性能,并使用动态峰值削减算法降低OFDM信号的峰均功率比,同时对原有迭代过程进行简化,合理地控制计算开销。仿真结果表明,与传统的功率降额处理方法相比,该方法可更为有效地降低系统峰均功率比和改善OFDM信号的立方度量性能。

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