Increasing the reach of visible light communication links through constant-envelope OFDM signals

被引：4

作者：

Camporez, Higor ^{[1
]}

Costa, Wesley ^{[1
,2
]}

Pontes, Maria ^{[1
]}

Segatto, Marcelo ^{[1
]}

Rocha, Helder ^{[1
]}

Silva, Jair ^{[1
,3
]}

Hinrichs, Malte ^{[2
]}

Paraskevopoulos, Anagnostis ^{[2
]}

Jungnickel, Volker ^{[2
]}

Freund, Ronald ^{[2
]}

机构：

[1] Univ Fed Espirito Santo, Elect Engn Dept, LabTel, 514 Goiabeiras, Ave Fernando Ferrari 514, BR-29075910 Vitoria, ES, Brazil

[2] Heinrich Hertz Inst Nachrichtentech Berlin GmbH, Fraunhofer Inst Nachrichtentechn, Einsteinufer 37, D-10587 Berlin, Germany

[3] Hanze Univ Appl Sci, Inst Engn, Sensors & Smart Syst Grp, NL-9747 AS Groningen, Netherlands

来源：

OPTICS COMMUNICATIONS | 2023年 / 530卷

关键词：

Constant-envelope OFDM; Nonlinear tolerance; Visible light communication; PAPR REDUCTION; SYSTEMS; SCHEME; VLC;

D O I：

10.1016/j.optcom.2022.129179

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The transmission of constant-envelope orthogonal frequency division multiplexing (CE-OFDM) signals, based on electrical phase modulation, was shown to improve the tolerance to noise and the nonlinearity introduced by light-emitting diodes (LEDs) in visible light communication (VLC) systems. This allows the application of larger signal amplitudes despite the LED-nonlinearities and, thus, data transmission over larger distances. The performance of a 9.51 Mb/s CE-OFDM based system, with 16-QAM subcarrier mapping in a bandwidth of 5 MHz, was compared to the efficiency of a conventional OFDM system. The error vector magnitude (EVM) was reduced from 17.5% to 10% (which is below the FEC limit), an improvement around 43%, when the CE-OFDM scheme was applied in the VLC link of 6 m. A good performance was achieved by the CE-OFDM based VLC system in a link of 8 m, when 4-QAM was used as subcarrier mapping.

引用

页数：6

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