A study of peak to average power ratio for different companding techniques in VLC-OFDM system

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[1] Singh, Arushi
[2] Jain, Anjana
[3] Vyavahare, Prakash
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| 1600年 / Institute of Electrical and Electronics Engineers Inc., United States卷
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VLC-OFDM is proposed to be used as the transmission technique in 5G mobile communication. VLC-OFDM produces the non-linear distortion due to non linear characteristics of LEDs and the PAPR of multiple sub-carrier modulation. The mitigation of non-linear distortion in VLC system is presently focused by many researchers; as it degrades system performance. Since the technique used in VLC system is OFDM so the system suffers the drawbacks of OFDM as well as VLC. Therefore; the non-linearity in the VLC-OFDM is quite severe. Hence; three companding techniques(A-law; μ-law; advanced A-law) can be implemented to remove the PAPR issue. Comparatively; advance A-law provides lower PAP ratio. This paper proposes these three non-linear companding techniques for reducing PAPR in VLC-OFDM system. © 2016 IEEE;
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