Scheme for solving peak-to-average power ratio of OFDM on intermediate frequency

doi:10.3778/j.issn.1002-8331.2011.03.036

Computer Engineering and Applications ›› 2011, Vol. 47 ›› Issue (3): 120-122.DOI: 10.3778/j.issn.1002-8331.2011.03.036

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

Scheme for solving peak-to-average power ratio of OFDM on intermediate frequency

ZHAO Qian¹，LI Lingling²

1.School of Communication and Information Engineering，Xi’an University of Science and Technology，Xi’an 710054，China
2.The 61st Research Institute of PLA General Staff Headquarter，Beijing 100039，China

Received:2009-09-03 Revised:2009-11-26 Online:2011-01-21 Published:2011-01-21
Contact: ZHAO Qian

中频降低正交频分复用系统峰均比的改进方法

赵谦¹，李泠泠²

1.西安科技大学通信与信息工程学院，西安 710054
2.总参第61研究所信息化总体研究部，北京 100039

通讯作者: 赵谦

Abstract

Abstract: Orthogonal Frequency Division Multiplexing（OFDM） can efficiently use of radio spectrum and withstand multipath fading，but the high level of Peak Average Power Ratio（PAPR） is a major drawback.Always some PAPR reduction schemes are used on baseband，but if baseband signal combined to Intermediate Frequency（IF），the peak may recur.This paper induces a new way named noise shaping on IF to solve the problem.

Key words: Orthogonal Frequency Division Multiplexing（OFDM）, Peak Average Power Ratio（PAPR）, Intermediate Frequency（IF）, Noise Shaping（NS）

摘要： 正交频分复用（OFDM）具有高频谱利用率及抗多径衰落的特性，但其存在峰均功率比（PAPR）较高的问题。为了降低峰均比常用的是基带削峰的方法，而基带信号合成为中频信号后容易产生峰值再生的问题。提出了一种基于中频的噪声成型方法，可以有效改善峰值再生的问题。

关键词: 正交频分复用, 峰均功率比, 中频, 噪声成型

CLC Number:

TN925

ZHAO Qian¹，LI Lingling². Scheme for solving peak-to-average power ratio of OFDM on intermediate frequency[J]. Computer Engineering and Applications, 2011, 47(3): 120-122.

赵谦¹，李泠泠². 中频降低正交频分复用系统峰均比的改进方法[J]. 计算机工程与应用, 2011, 47(3): 120-122.

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Scheme for solving peak-to-average power ratio of OFDM on intermediate frequency

中频降低正交频分复用系统峰均比的改进方法

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