PAPR reduction by combining clipping and piecewise linear companding for OFDM-based VLC systems
PAPR reduction by combining clipping and piecewise linear companding for OFDM-based VLC systems
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通过结合基于 OFDM 的 VLC 系统的限幅和分段线性压扩来降低 PAPR
DOI：
10.1117/1.oe.60.6.066105
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发表时间：
2021-06
影响因子：
1.3
通讯作者：
Pang Weina
中科院分区：
文献类型：
--
作者：
Wang Zhao;Wang Ping;Nan Xi;Niu Shuqiang;Chi Sihui;Che Hui;Wang Wei;Pang Weina
抽象的。针对可见光通信（VLC）系统中光正交频分复用（O-OFDM）信号的高限幅噪声和峰均功率比（PAPR）问题，提出了一种限幅-分段线性压扩（C-PLC）方案。通过在信号末尾添加后缀，保留了信号的削波信息，降低了VLC系统的削波噪声和峰均比，有效地限制了信号的动态范围。此外，保留的削波信息可以在接收端恢复，从而显著改善了系统的误比特率性能。此外，PLC可以将双极性信号映射为适合VLC的单极信号，有效地降低信号的PAPR。仿真结果表明，C-PLC系统比直流偏置光OFDM和μ-OFDM系统具有更低的峰均功率比，并且具有更好的误码性能。本文的工作对VLC系统的研究和开发具有一定的指导意义。
Abstract. A scheme called clipping-piecewise linear companding (C-PLC) was proposed in this paper to address the problem of high clipping noise and peak-to-average power ratio (PAPR) in optical orthogonal frequency division multiplexing (O-OFDM) signal for visible light communication (VLC) systems. The clipping information of the signal could be retained by adding a suffix at its end, which could reduce the clipping noise and PAPR of the VLC system, thus limiting the dynamic range of the signal effectively. In addition, the retained clipping information could be recovered at the receiver, with which the bit error rate (BER) performance could be pronouncedly improved. Furthermore, PLC could map bipolar signals into unipolar signals suitable for VLC and effectively reduce the PAPR of the signals. Simulation results showed that C-PLC system has lower PAPR than that of direct-current biased optical-OFDM and μ-OFDM schemes, and it also demonstrates an improved BER performance. This work will be of good help for the research and development of VLC system.
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影响因子：
2.6
作者：
Yang Yang-Yang;Zhimin Zeng;Shulan Feng;Caili Guo
通讯作者：
Yang Yang-Yang;Zhimin Zeng;Shulan Feng;Caili Guo
DOI：
10.1109/jstsp.2019.2920577
发表时间：
2019-06
影响因子：
7.5
作者：
Anil Yesilkaya;R. Bian;Iman Tavakkolnia;H. Haas
通讯作者：
Anil Yesilkaya;R. Bian;Iman Tavakkolnia;H. Haas
影响因子：
4.5
作者：
Sana Mazahir;S. A. Sheikh
通讯作者：
Sana Mazahir;S. A. Sheikh
分段线性压扩变换可减少 OFDM 信号的 PAPR 并减轻压扩失真
影响因子：
4.5
作者：
Hu, Meixia;Li, Yongzhao;Zhang, Hailin
通讯作者：
Zhang, Hailin
影响因子：
3.9
作者：
Hongming Zhang;Lie-liang Yang;L. Hanzo
通讯作者：
Hongming Zhang;Lie-liang Yang;L. Hanzo