Acta Metallurgica Sinica(English letters)

• Wireless • 上一篇    下一篇

Deepen spectrum notch and reduce PAPR in OFDM systems via combining subcarriers precoding with tone reservation

赵成林,刘德强,孙学斌,蒋挺   

  1. 北京邮电大学信息与通信工程学院
  • 收稿日期:2010-10-20 修回日期:2011-02-22 出版日期:2011-06-30 发布日期:2011-06-13
  • 通讯作者: 刘德强 E-mail:liudq3888@163.com
  • 基金资助:

    国家科技重大专项;国家自然科学基金“异构IP网络中基于多目标决策理论的资源优化技术研究”

Deepen spectrum notch and reduce PAPR in OFDM systems via combining subcarriers precoding with tone reservation

  • Received:2010-10-20 Revised:2011-02-22 Online:2011-06-30 Published:2011-06-13
  • Supported by:

    National Science and Technology Major Projects

摘要:

In orthogonal frequency division multiplexing (OFDM) systems, spectrum notch can be generated to mitigate interference to other narrow-band services by turning off corresponding subcarriers. However, the inter-carrier interference may limit considerably the produced notch depth. Another problem in OFDM is the high peak-to-average power ratio (PAPR). In this paper, a technique combining subcarriers precoding with tone reservation is proposed to deepen spectrum notch and simultaneously reduce peak-to-average power ratio. Simulation results show that this presented joint algorithm can produce satisfied results to solve these problems at the expense of a moderate loss in bit error rate (BER) performance.

关键词:

OFDM, spectrum notch, PAPR, subcarriers precoding, tone reservation

Abstract:

In orthogonal frequency division multiplexing (OFDM) systems, spectrum notch can be generated to mitigate interference to other narrow-band services by turning off corresponding subcarriers. However, the inter-carrier interference may limit considerably the produced notch depth. Another problem in OFDM is the high peak-to-average power ratio (PAPR). In this paper, a technique combining subcarriers precoding with tone reservation is proposed to deepen spectrum notch and simultaneously reduce peak-to-average power ratio. Simulation results show that this presented joint algorithm can produce satisfied results to solve these problems at the expense of a moderate loss in bit error rate (BER) performance.

Key words:

OFDM, spectrum notch, PAPR, subcarriers precoding, tone reservation