Research on OFDM-IM Visible Light Communication System Based on Combination Index and Euclidean Distance

ZHAO Li; HE Huanjie; MENG Xiangyan; WANG Ning

doi:10.11999/JEIT220112

Volume 44 Issue 8

Aug. 2022

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Article Navigation > Journal of Electronics & Information Technology > 2022 > 44(8): 2710-2716

ZHAO Li, HE Huanjie, MENG Xiangyan, WANG Ning. Research on OFDM-IM Visible Light Communication System Based on Combination Index and Euclidean Distance[J]. Journal of Electronics & Information Technology, 2022, 44(8): 2710-2716. doi: 10.11999/JEIT220112

Citation:

ZHAO Li, HE Huanjie, MENG Xiangyan, WANG Ning. Research on OFDM-IM Visible Light Communication System Based on Combination Index and Euclidean Distance[J]. Journal of Electronics & Information Technology, 2022, 44(8): 2710-2716. doi: 10.11999/JEIT220112

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Research on OFDM-IM Visible Light Communication System Based on Combination Index and Euclidean Distance

doi: 10.11999/JEIT220112

School of Electronics and Information Engineering, Xi’an Technological University, Xi’an 710021, China

Funds: The National Natural Science Foundation of China (12004292), The General Project of Science and Technology Department of Shaanxi Province – Industry (2022GY-072), Xi’an Science and Technology Planning Project (2020KJRC0040)

Received Date: 2022-01-27
Accepted Date: 2022-06-08
Rev Recd Date: 2022-05-12

Available Online: 2022-06-10

Publish Date: 2022-08-17

Abstract

Abstract

DC-bias Optical-Orthogonal Frequency Division Multiplexing (DCO-OFDM) has a high Peak-to-Average Power Ratio (PAPR) and is susceptible to multipath interference and noise frequency bias. To address this challenge, carrier Index Modulation (IM) is introduced into DCO-OFDM and a DCO-OFDM-IM modulation scheme suitable for visible light communication is proposed. In this scheme, the signal mapping constraint model bases on the combination of composite index and Euclidian distance is used to perform block composite index of subcarriers, which can not only transfer information using traditional constellation modulation in the signal domain, but also carry additional information through the carrier index in the frequency domain, which improves effectively the system peak to average ratio and bit error rate performance. The theoretical bit error rate of DCO-OFDM-IM system is derived and verified by monte Carlo method. The results show that compared with traditional DCO-OFDM system, when the number of subcarriers is 256, the modulation order is 4, and the system bit error rate is 10^–3, the required Signal-to-Noise Ratio (SNR) of DCO-OFDM-IM system is improved by about 2 dB on average. When the BER is 10^–3, the required SNR of the combined index and Euclidian distance algorithm improved by 2 dB on average compared with the random carrier combination system. When the system Complementary Cumulative Distribution Function (CCDF) is 10^–1, the average ratio of the original signal peaks of DCO-OFDM-IM is decreased by about 2.4 dB compared with that of DCO-OFDM.

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References(15)

References

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