ON THE PAPR REDUCTION IN OFDM SYSTEMS: A NOVEL ZCT PRECODING BASED SLM TECHNIQUE

被引：0

作者：

Baig, Imran ^{[1
]}

Jeoti, Varun ^{[1
]}

机构：

[1] Univ Teknol PETRONAS, Elect & Elect Engn Dept, Teronoh, Perak, Malaysia

来源：

JOURNAL OF ENGINEERING SCIENCE AND TECHNOLOGY | 2011年 / 6卷 / 03期

关键词：

Peak to average power ratio; Zadoff-Chu matrix transform; Orthogonal frequency division multiplexing; SLM-OFDM;

D O I：

暂无

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

High Peak to Average Power Ratio (PAPR) reduction is still an important challenge in Orthogonal Frequency Division Multiplexing (OFDM) systems. In this paper, we propose a novel Zadoff-Chu matrix Transform (ZCT) precoding based Selected Mapping (SLM) technique for PAPR reduction in OFDM systems. This technique is based on precoding the constellation symbols with ZCT precoder after the multiplication of phase rotation factor and before the Inverse Fast Fourier Transform (IFFT) in the SLM based OFDM (SLMOFDM) Systems. Computer simulation results show that, the proposed technique can reduce PAPR up to 5.2 dB for N= 64 (System subcarriers) and V= 16 (Dissimilar phase sequences), at clip rate of 10(-3). Additionally, ZCT based SLM-OFDM (ZCT-SLM-OFDM) systems also take advantage of frequency variations of the communication channel and can also offer substantial performance gain in fading multipath channels.

引用

页码：357 / 368

页数：12

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