OFDM中一种有效的基于分段非线性压扩的PAPR抑制算法

邢智童; 李云; 彭德义; 张本思; 刘凯明; 刘元安

doi:10.11959/j.issn.1000-436x.2021230

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OFDM中一种有效的基于分段非线性压扩的PAPR抑制算法

学术论文 | 更新时间：2024-06-05

- OFDM中一种有效的基于分段非线性压扩的PAPR抑制算法
- Efficient PAPR reduction algorithm in OFDM based on nonlinear piecewise companding
- 通信学报 2021年42卷第12期页码：44-53
- 作者机构：
  
  1. 重庆邮电大学移动通信技术重庆市重点实验室，重庆 400065
  2. 北京邮电大学智慧无线移动信息技术研究中心，北京 100876
- 作者简介：
  
  [ "邢智童（1992- ），男，重庆人，重庆邮电大学在站博士后，主要研究方向为无线通信传输，包括 PAPR 抑制、Massive MIMO-OFDM 预编码设计、抗干扰算法设计等" ]
  [ "李云（1974- ），男，四川南充人，博士，重庆邮电大学教授，主要研究方向为TCP性能分析与改进、无线局域网、无线自组织网络、无线Mesh网络等" ]
  [ "彭德义（1987-），男，湖南湘潭人，重庆邮电大学博士生，主要研究方向为卫星通信波束成形、预编码等" ]
  [ "张本思（1995- ），男，河南商丘人，重庆邮电大学硕士生，主要研究方向为卫星通信波束成形、预编码等" ]
  [ "刘凯明（1978- ），男，湖北潜江人，博士，北京邮电大学教授，主要研究方向为宽带无线通信、无线自组织网络、异构网络融合、移动互联网等" ]
  [ "刘元安（1963- ），男，四川乐至人，博士，北京邮电大学教授，主要研究方向为宽带移动通信技术、射频与微波器件、综合网络接入技术、移动终端与物联网等" ]
- 基金信息：
  
  国家自然科学基金资助项目(62771077);国家自然科学基金资助项目(61671096)
- DOI：10.11959/j.issn.1000-436x.2021230
  中图分类号： TP302
- 网络出版日期：2021-12，
  
  纸质出版日期：2021-12-25
- 稿件说明：
移动端阅览
邢智童, 李云, 彭德义, 等. OFDM中一种有效的基于分段非线性压扩的PAPR抑制算法[J]. 通信学报, 2021,42(12):44-53.

Zhitong XING, Yun LI, Deyi PENG, et al. Efficient PAPR reduction algorithm in OFDM based on nonlinear piecewise companding[J]. Journal on communications, 2021, 42(12): 44-53.
邢智童, 李云, 彭德义, 等. OFDM中一种有效的基于分段非线性压扩的PAPR抑制算法[J]. 通信学报, 2021,42(12):44-53. DOI： 10.11959/j.issn.1000-436x.2021230.

Zhitong XING, Yun LI, Deyi PENG, et al. Efficient PAPR reduction algorithm in OFDM based on nonlinear piecewise companding[J]. Journal on communications, 2021, 42(12): 44-53. DOI： 10.11959/j.issn.1000-436x.2021230.

摘要

针对正交频分复用（OFDM）系统中峰均比（PAPR）较大的问题，提出了一种基于通用瑞利和三角分布相结合的分段非线性压扩算法。对于幅度较小的信号，该算法不对其进行处理。对于幅度较大的信号，该算法将其幅度对应的概率密度函数从瑞利分布改为三角函数分布。该算法可以在有效降低OFDM信号的PAPR的前提下，确保 OFDM 信号样点的误比特率性能和功率谱密度性能。仿真结果表明，在相同的峰均比限制条件下，与参考文献的算法相比，所提算法误比特率更低，带外泄露功率更低。

Abstract

Focusing on the high peak-to-average power ratio （PAPR） problem in orthogonal frequency division multiplexing （OFDM） systems， a generalized hybrid of rayleigh and sine distribution based nonlinear companding algorithm for PAPR reduction in OFDM systems was provided.For the proposed algorithm， signal samples with small amplitudes remain unchanged.For the signal samples with large amplitudes， their probability density function were changed from rayleigh distribution to sine-based distribution.The proposed algorithm can effectively reduce the PAPR， and at the same time， maintain the bit error rate performance and power spectral density performance.Simulation results indicate that with the same PAPR performance， compared with referred companding schemes， the proposed algorithm has lower bit error rate and out of band radiation.

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references

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