Improved Companding Transform for PAPR Reduction in ACO-OFDM-Based VLC Systems

In this letter, an improved linear nonsymmetrical transform (ILNST) is proposed to reduce the peak-to-average power ratio (PAPR) for asymmetric clipping optical orthogonal frequency division multiplexing-based visible light communication (VLC) systems. The emission power conservation criteria are im...

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Bibliographic Details
Published in:IEEE communications letters 2018-06, Vol.22 (6), p.1180-1183
Main Authors: Zhang, Tian, Zou, Yue, Sun, Jianing, Qiao, Shuang
Format: Article
Language:English
Subjects:
asymmetric clipping optical orthogonal frequency division multiplexing (ACO-OFDM)
Distortion
Light emitting diodes
Linear nonsymmetrical transform (LNST)
Optical distortion
Peak to average power ratio
peak-to-average power ratio (PAPR)
Simulation
Transforms
visible light communications (VLC)
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Summary:In this letter, an improved linear nonsymmetrical transform (ILNST) is proposed to reduce the peak-to-average power ratio (PAPR) for asymmetric clipping optical orthogonal frequency division multiplexing-based visible light communication (VLC) systems. The emission power conservation criteria are implemented to calculate the enlarge coefficient with a given compression coefficient. The transfer characteristic of a 5 mm commercial light-emitting diodes is introduced to estimate the VLC systems performance. Bit error ratio (BER) and complementary cumulative distribution function simulation results show that the proposed ILNST outperforms the classical linear nonsymmetrical transform method in PAPR reduction and BER enhancement.
ISSN:1089-7798
1558-2558
DOI:10.1109/LCOMM.2018.2827940