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Performance analysis of ACO-OFDM NOMA for VLC communication

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Abstract

Visible light communication (VLC) has been seeking much attention in recent years due to its high bandwidth, low cost, and ease of implementation. VLC can be used for illumination as well as communication at the same time. Light emitting diode (LED) acts as a transmitter for data transmission, and photo detector is used on the receiver side. Intensity Modulation (IM) converts an electrical signal into an optical signal, where only real and positive signals need to be transmitted. Optical orthogonal frequency division multiplexing (O-OFDM) is used in the VLC to enhance the bandwidth limitation due to LED. Using O-OFDM for VLC does not provide massive connectivity in a multi-user environment. Nonorthogonal multiple access (NOMA) is the further expansion where the user can use both the time and frequency resources but distinguished in the power domain with successive interference cancellation (SIC) at the receiver to decode the signal of each user. Also, Asymmetrically clipped optical orthogonal frequency division multiplexing (ACO-OFDM) for NOMA is used to get the positive signal with enhanced spectral efficiency. The proposed method was analyzed by considering simulations and analytical results for LOS and NLOS communication.

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Authors and Affiliations

  1. Department of Electronics and Communication, National Institute of Technology, Rourkela, 769008, Odisha, India

    Jayashree Pradhan, Pratiksha Holey, Vinod Kiran Kappala & Santos Kumar Das

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  1. Jayashree Pradhan
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  2. Pratiksha Holey
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  3. Vinod Kiran Kappala
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  4. Santos Kumar Das
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Correspondence to Santos Kumar Das.

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Pradhan, J., Holey, P., Kappala, V.K. et al. Performance analysis of ACO-OFDM NOMA for VLC communication. Opt Quant Electron 54, 531 (2022). https://doi.org/10.1007/s11082-022-03939-7

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