Improving Bandwidth Efficiency of Indoor Visible Light Communication by M-ary Return-to-zero Optical Pulse Amplitude Modulation

2013 ◽  
Vol 12 (5) ◽  
pp. 975-982 ◽  
Author(s):  
Guanghui Ren ◽  
Shengyang He ◽  
Yunlong Yang
Keyword(s):  
Visible Light ◽  
Amplitude Modulation ◽  
Optical Pulse ◽  
Pulse Amplitude ◽  
Visible Light Communication ◽  
Pulse Amplitude Modulation ◽  
Bandwidth Efficiency

scholarly journals Superposed pulse amplitude modulation for visible light communication

2013 ◽  
Vol 21 (25) ◽  
pp. 31006 ◽  
Author(s):  
J. F. Li ◽  
Z. T. Huang ◽  
R. Q. Zhang ◽  
F. X. Zeng ◽  
M. Jiang ◽  
...  
Keyword(s):  
Visible Light ◽  
Amplitude Modulation ◽  
Pulse Amplitude ◽  
Visible Light Communication ◽  
Pulse Amplitude Modulation

Trellis-coded pulse amplitude modulation for indoor visible light communication

2013 ◽  
Author(s):  
Yu Wang ◽  
Aiying Yang ◽  
Yongsheng Wu ◽  
Lihui Feng ◽  
Yu-nan Sun ◽  
...  
Keyword(s):  
Visible Light ◽  
Amplitude Modulation ◽  
Pulse Amplitude ◽  
Visible Light Communication ◽  
Pulse Amplitude Modulation ◽  
Trellis Coded

scholarly journals Spectral Efficient Asymmetrically Clipped Hybrid FBMC for Visible Light Communication

2021 ◽  
Vol 2021 ◽  
pp. 1-8
Author(s):  
Sanjeev Kumar ◽  
Preeti Singh
Keyword(s):  
Visible Light ◽  
Amplitude Modulation ◽  
Spectral Efficiency ◽  
Filter Bank ◽  
Direct Detection ◽  
Average Power ◽  
Pulse Amplitude ◽  
Visible Light Communication ◽  
Discrete Multitone ◽  
Filter Bank Multicarrier

Filter bank multicarrier (FBMC) modulation has shown sufficient potential for wireless communication. A hybrid optical FBMC technique is proposed to improve the spectral efficiency of a visible light communication (VLC) system. In this technique, a hybrid asymmetrically clipped optical offset quadrature amplitude modulation FBMC (HACO-OQAM-FBMC) modulation technique is used. Asymmetrically clipped optical FBMC (ACO-FBMC) is used for odd subcarriers, and pulse amplitude modulation-discrete multitone (PAM-DMT) is used for the even subcarriers. The proposed hybrid scheme uses an intensity modulation/direct detection (IM/DD) channel. It is shown that there is no interference on odd subcarriers using the proposed method and receiver demodulation is similar to that of ACO-FBMC receiver. However, clipping noise of ACO-FBMC falls on PAM-DMT subcarriers, which can be cancelled at receiver processing after estimation. The analytical performance of the proposed technique is compared using parameters, namely, bit error rate (BER), spectral efficiency, computational complexity, and peak to average power ratio (PAPR). It is found that HACO-OQAM-FBMC is more spectral efficient than ACO-FBMC and other OFDM-based techniques.

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