On the Properties of Cubic Metric for OFDM Signals

被引：18

作者：

Kim, Kee-Hoon ^{[1
]}

No, Jong-Seon ^{[1
]}

Shin, Dong-Joon ^{[2
]}

机构：

[1] Seoul Natl Univ, INMC, Dept Elect & Comp Engn, Seoul 151744, South Korea

[2] Hanyang Univ, Dept Elect Engn, Seoul 133791, South Korea

来源：

IEEE SIGNAL PROCESSING LETTERS | 2016年 / 23卷 / 01期

关键词：

Cubic metric (CM); fast Fourier transform (FFT); orthogonal frequency division multiplexing (OFDM); oversampling; peak-to-average power ratio (PAPR); TO-AVERAGE POWER; REDUCTION; SYSTEMS;

D O I：

10.1109/LSP.2015.2502261

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

As a metric for amplitude fluctuation of orthogonal frequency division multiplexing (OFDM) signal, cubic metric (CM) has received an increasing attention because it is more closely related to the distortion induced by nonlinear devices than the well-known peak-to-average power ratio (PAPR). In this letter, the properties of CM of OFDM signal is investigated. First, asymptotic distribution of CM is derived. Second, it is verified that 1.7 times oversampling rate is good enough to capture the CM of continuous OFDM signals in terms of mean square error, which is also practically meaningful because the fast Fourier transform size is typically 1.7 times larger than the nominal bandwidth in the long-term evolution (LTE) cellular communication systems.

引用

页码：80 / 83

页数：4

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