Threshold-based piecewise companding transform for PAPR reduction in OFDM systems

doi:10.1016/S1005-8885(13)60019-9

Acta Metallurgica Sinica(English letters)

• Wireless • 下一篇

Threshold-based piecewise companding transform for PAPR reduction in OFDM systems

刘淑华¹,张海林¹,李勇朝²,²,刘英挺²,²

1. 西安电子科技大学
2.

收稿日期:2012-09-06 修回日期:2012-12-10 出版日期:2013-04-30 发布日期:2013-04-26
通讯作者: 刘淑华 E-mail:liu.shuhua@126.com
基金资助:
This work was supported by the National Natural Science Foundation of China (61072069), the Fundamental Research Funds for the Central Universities (72105242), and the 111 Project (B08038)

Threshold-based piecewise companding transform for PAPR reduction in OFDM systems

Received:2012-09-06 Revised:2012-12-10 Online:2013-04-30 Published:2013-04-26
Contact: Shu-Hua LIU E-mail:liu.shuhua@126.com
Supported by:
This work was supported by the National Natural Science Foundation of China (61072069), the Fundamental Research Funds for the Central Universities (72105242), and the 111 Project (B08038)

摘要/Abstract

摘要：

Piecewise companding transform is a flexible and efficient way to solve the high peak-to-average power ratio (PAPR) problem for orthogonal frequency division multiplexing (OFDM) systems. A novel threshold-based piecewise companding transform is proposed in this paper. Based on the statistical characteristics of amplitudes, OFDM signals are classified into three groups (i.e., small, average and large signals). Different from conventional approaches, two dedicated designed thresholds are set to amplify the small signals and compress the large signals, respectively. Simulation results verify the improvement in PAPR reduction of the proposed scheme. Moreover, a lower bit error rate (BER) performance loss can be obtained by introducing the iterative detection with a moderate increase in complexity.

关键词:

OFDM, PAPR, companding transform, iterative detection

Abstract:

Key words:

OFDM, PAPR, companding transform, iterative detection

参考文献

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Threshold-based piecewise companding transform for PAPR reduction in OFDM systems

Threshold-based piecewise companding transform for PAPR reduction in OFDM systems

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