A Union Algorithm of PAPR Reduction for OFDM systems

被引：0

作者：

Ji Ce ^{[1
]}

Jia Dianxia ^{[1
]}

Zhang Chao ^{[1
]}

Wang Lijuan ^{[1
]}

机构：

[1] Northeastern Univ, Sch Comp Sci & Engn, Shenyang 110819, Peoples R China

来源：

PROCEEDINGS OF 2017 9TH INTERNATIONAL CONFERENCE ON MEASURING TECHNOLOGY AND MECHATRONICS AUTOMATION (ICMTMA) | 2017年

基金：

中国国家自然科学基金;

关键词：

OFDM; PAPR; Cross Entropy; clipping; POWER RATIO REDUCTION; CROSS-ENTROPY; SIGNALS;

D O I：

10.1109/ICMTMA.2017.87

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

Clipping algorithm is an effective method to reduce the Peak-to-Average Power Ratio for OFDM systems, but it introduces nonlinear distortions and causes the error rate of the system rising at the same time. To solve this drawback of clipping algorithm, this paper introduces CE-SLM algorithm to clipping, in other words when the PAPR of signal is greater than the threshold, and CE-SLM algorithm will be applied. CE-SLM algorithm uses the Cross Entropy (CE) to optimize the symbol sequence in SLM algorithm in order to reduce PAPR. This process doesn't introduce nonlinear distortions and can reduce the error rate of the system. Computer simulation results show that the union algorithm can reduce the error rate of the system under the condition of keeping the same PAPR reduction effect with clipping algorithm.

引用

页码：339 / 342

页数：4

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