Efficient PAPR reduction algorithm in OFDM based on nonlinear piecewise companding

被引：0
|
作者：
Xing Z. [1 ]
Li Y. [1 ]
Peng D. [1 ]
Zhang B. [1 ]
Liu K. [2 ]
Liu Y. [2 ]
机构：
[1] Chongqing Key Laboratory of Mobile Communications Technology, Chongqing University of Posts and Telecommunications, Chongqing
[2] Institute of Smart Wireless Information Technology, Beijing University of Posts and Telecommunications, Beijing
来源：
Tongxin Xuebao/Journal on Communications | 2021年 / 42卷 / 12期
基金：
中国国家自然科学基金;
关键词：
Companding; OFDM; PAPR; Signal distortion;
D O I：
10.11959/j.issn.1000-436x.2021230
中图分类号：
学科分类号：
摘要：
Focusing on the high peak-to-average power ratio (PAPR) problem in orthogonal frequency division multiplexing (OFDM) systems, a generalized hybrid of rayleigh and sine distribution based nonlinear companding algorithm for PAPR reduction in OFDM systems was provided. For the proposed algorithm, signal samples with small amplitudes remain unchanged. For the signal samples with large amplitudes, their probability density function were changed from rayleigh distribution to sine-based distribution. The proposed algorithm can effectively reduce the PAPR, and at the same time, maintain the bit error rate performance and power spectral density performance. Simulation results indicate that with the same PAPR performance, compared with referred companding schemes, the proposed algorithm has lower bit error rate and out of band radiation. © 2021, Editorial Board of Journal on Communications. All right reserved.
引用
收藏
页码：44 / 53
页数：9
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