Study on Companding Transforms for Reduction in PAPR of OFDM Signals

CAO Ruo-yun; JIANG Tao; QIN Jia-yin

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Study on Companding Transforms for Reduction in PAPR of OFDM Signals

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- Study on Companding Transforms for Reduction in PAPR of OFDM Signals
- Acta Electronica Sinica Vol. 35, Issue 6, Pages: 1099-1101(2007)
- 作者机构：
  
  1. 中山大学信息科学与技术学院电子与通信工程系,广东,广州,510275
  2. Department of Electronic and Computer Engineering,University of Michigan,Dearborn Campus,4901 Evergreen Road,MI,Dearborn,USA,48128
  3. 中山大学信息科学与技术学院电子与通信工程系广东广州,510275
  4. Department of Electronic and Computer EngineeringUniversity of MichiganDearborn Campus Evergreen RoadDearbornMI 48128USA,4901
- 作者简介：
- 基金信息：
- DOI：
  CLC： TN915.1
- Published：2007
- 稿件说明：
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CAO Ruo-yun, JIANG Tao, QIN Jia-yin. Study on Companding Transforms for Reduction in PAPR of OFDM Signals[J]. Acta Electronica Sinica, 2007, 35(6): 1099-1101.
DOI：

CAO Ruo-yun, JIANG Tao, QIN Jia-yin. Study on Companding Transforms for Reduction in PAPR of OFDM Signals[J]. Acta Electronica Sinica, 2007, 35(6): 1099-1101. DOI：

摘要

本文通过理论推导和分析

确定了基于误差函数降低正交频分复用(OFDM)系统峰均功率比的非线性压扩方法中两个关键参数的取值

修正了以前的结果

并在此基础上提出了一种新的压扩函数来降低OFDM系统的峰均功率比.理论分析和仿真结果表明

新的压扩方法能够在保持原信号平均功率不变的情况下使峰均功率比降低到7.8dB以下

并且系统具有较好的误比特率性能.

Abstract

We propose a new companding scheme to reduce Peak-to-Average Power Ratio (PAPR) of Orthogonal Frequency Division Multiplexing (OFDM) signals to revise our previous work

which is based on our rigorous theoretical derivation.Both theoretical analysis and simulation results show that the proposed companding transform can reduce PAPR to below 7.8dB while keeping the average power unchanged

and the system having good BER performance simultaneously.

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