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Computer Science > Information Theory

arXiv:2109.11667 (cs)
[Submitted on 23 Sep 2021]

Title:Performance Improvement of Dimmable OFDM-Visible Light Communication using Subcarrier Index Modulation and Reed Solomon Encoding

Authors:Nima Taherkhani, Kamran Kiasaleh
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Abstract:In this paper, we propose a new subcarrier index modulation scheme for orthogonal frequency division multiplexing (OFDM), which incorporates the Reed-Solomon (RS) encoding in a visible light communication (VLC) system. In this scheme, the incoming bits are first encoded using the RS encoder, then a set of symbols in the resulting RS codeword are punctured, and the remaining symbols are modulated and mapped onto the OFDM subcarriers. This system is referred to as RS-OFDM-IM. Unlike the traditional subcarrier index modulation (SIM) schemes, the proposed scheme operates based on conveying extra information by inactivating the selected subcarriers, which facilitates simultaneous clipping noise reduction and spectral efficiency enhancement in OFDM-VLC. The bit error rate (BER) and throughput of the proposed technique is theoretically and numerically analyzed. The simulation results show the superiority of the proposed technique as compared to the coded DCO-OFDM without SIM and the classical SIM in OFDM-VLC in a system with practical clipping conditions.
Subjects: Information Theory (cs.IT); Systems and Control (eess.SY)
Cite as: arXiv:2109.11667 [cs.IT]
  (or arXiv:2109.11667v1 [cs.IT] for this version)
  https://doi.org/10.48550/arXiv.2109.11667

Submission history

From: Nima Taherkhani [view email]
[v1] Thu, 23 Sep 2021 22:16:02 UTC (1,814 KB)
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