scholarly journals Achievable information rate enhancement of visible light communication using probabilistically shaped OFDM modulation

2018 ◽  
Vol 26 (1) ◽  
pp. 367 ◽  
Author(s):  
Chenhui Xie ◽  
Zexin Chen ◽  
Songnian Fu ◽  
Wu Liu ◽  
Zhixue He ◽  
...  
Keyword(s):  
Visible Light ◽  
Visible Light Communication ◽  
Information Rate ◽  
Rate Enhancement ◽  
Ofdm Modulation

scholarly journals 5G Visible Light Communication - OCDMA Setup using Catenated-OFDM Modulation Method

2021 ◽  
Vol 1755 (1) ◽  
pp. 012016
Author(s):  
N. M. Nawawi ◽  
S. R. Abdullah ◽  
Aini Syuhada Md Zain ◽  
M. S. Anuar ◽  
M. N. Junita
Keyword(s):  
Visible Light ◽  
Visible Light Communication ◽  
Modulation Method ◽  
Ofdm Modulation

Realization of OFDM modulation and demodulation for visible light communication based on FPGA

2017 ◽  
Vol 13 (1) ◽  
pp. 58-62 ◽  
Author(s):  
Chun-hui Wu ◽  
Zong-yu Gao ◽  
Hong-lei Li ◽  
Xiong-bin Chen ◽  
Xu-rui Mao ◽  
...  
Keyword(s):  
Visible Light ◽  
Visible Light Communication ◽  
Modulation And Demodulation ◽  
Ofdm Modulation

scholarly journals On the Achievable Information Rate of Probabilistic Shaping QAM Order and Source Entropy in Visible Light Communication Systems

2020 ◽  
Vol 10 (12) ◽  
pp. 4299 ◽  
Author(s):  
Peng Zou ◽  
Fangchen Hu ◽  
Yiheng Zhao ◽  
Nan Chi
Keyword(s):  
Visible Light ◽  
Communication Systems ◽  
Signal To Noise Ratio ◽  
Visible Light Communication ◽  
Spectrum Efficiency ◽  
Information Rate ◽  
Computation Complexity ◽  
Signal To Noise ◽  
First Time ◽  
The Relationship

Probabilistic shaping (PS) is a powerful tool that can realize a flexible data rate and high spectrum efficiency. However, the performance of PS is closely related to the quadrature amplitude modulation (QAM) order, source entropy (SE), normalized generalized mutual information (NGMI), and achievable information rate (AIR). In this paper, we investigated the relationship between PS QAM order, SE, NGMI, and AIR performance for the first time in the visible light communication (VLC) system. Under a specific signal-to-noise ratio (SNR), the PS QAM order and SE in this paper can realize a high AIR at a preset NGMI threshold with the lowest computation complexity, which is just 0.1 bit smaller than the highest AIR. Simulation and experimental results show that the NGMI fluctuates between only ±0.005 of the preset NGMI threshold, which proves that the scheme proposed in this paper is feasible.

scholarly journals Experimental Investigation of Zadoff-Chu Matrix Precoding for Visible Light Communication System with OFDM Modulation

2018 ◽  
Vol 2018 ◽  
pp. 1-6
Author(s):  
Xinyue Guo ◽  
Yang Guo ◽  
Shuangshuang Li
Keyword(s):  
Visible Light ◽  
Orthogonal Frequency Division Multiplexing ◽  
High Speed ◽  
Forward Error Correction ◽  
Signal To Noise Ratio ◽  
Light Emitting Diode ◽  
Average Power ◽  
Visible Light Communication ◽  
Potential Candidate ◽  
Ofdm Modulation

Light-emitting diode- (LED-) based visible light communication (VLC) has become a potential candidate for next generation high-speed indoor wireless communication. Due to the limited modulation bandwidth of the LED, orthogonal frequency division multiplexing (OFDM) modulation is particularly preferred in the VLC system to overcome the ISI, which suffers from the high peak-to-average power ratio (PAPR) and leads to severe performance loss. In this paper, we propose and experimentally demonstrate a novel Zadoff-Chu matrix (ZCM) precoding scheme, which can not only reduce the PAPR, but also provide uniform signal-to-noise ratio (SNR) profile. The theoretical analysis and simulation show that the proposed scheme achieves better PAPR performance compared with the traditional precoding schemes. The experimental demonstration further validates the bit error rate (BER) performance improvement, where the measured BERs are all below the 7% pre-forward error correction (pre-FEC) limit of 3.8 × 10−3 when the transmitted data rate is 50 Mb/s.

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