article · 2024

Single Block Index Modulation-OFDM (SBIM-OFDM)

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Abstract

Existing frequency domain index modulation (FD-IM) schemes for orthogonal frequency division multiplexing (OFDM) are proposed to trade-off between spectral efficiency (SE), error performance (EP), and energy efficiency (EE). This paper proposes a next-generation physical layer technique to realize a more spectrally efficient FD-IM called SBIM-OFDM (single block index modulation-OFDM). All SBIM-OFDM subcarriers are active and convey the information by ordinary amplitude phase modulation (APM). The additional bits are conveyed by changing the indices of a subset of pilot subcarriers identifiable through the associated constellation shape. The achieved $2.47 \mathrm{~b} / \mathrm{s} / \mathrm{Hz}$ indicates higher SE compared with relevant FD-IM schemes (approximately 48% gain in $\mathbf{b} / \mathbf{s} / \mathbf{H z}$). Towards online deployments for Internet-ofThings (IoT) applications, this work also investigates using low-complexity machine learning (ML) based classifiers as pilot subcarrier detectors. Simulations are conducted under both optical and radio frequency (RF) channel conditions, as well as perfect and imperfect channel estimations. The simulation results indicate the potential for achieving biterror performance of $10^{-3}$ or better for optical communication channel models, with $\mathbf{9 9 \%}$ or better classification accuracy.

Cite this paper

APA 7

Elgala, H., & Stańczak, S. (2024). Single Block Index Modulation-OFDM (SBIM-OFDM). https://doi.org/10.1109/mecom61498.2024.10881769

MLA 9

Elgala, Hany, and Sławomir Stańczak. “Single Block Index Modulation-OFDM (SBIM-OFDM).” 2024, pp. 327–32, https://doi.org/10.1109/mecom61498.2024.10881769.

Chicago

Elgala, Hany, and Sławomir Stańczak. 2024. “Single Block Index Modulation-OFDM (SBIM-OFDM).” https://doi.org/10.1109/mecom61498.2024.10881769.

Harvard

Elgala, H. and Stańczak, S. (2024) ‘Single Block Index Modulation-OFDM (SBIM-OFDM)’. Available at: https://doi.org/10.1109/mecom61498.2024.10881769.

BibTeX

@article{elgala2024single,
  title = {{Single Block Index Modulation-OFDM (SBIM-OFDM)}},
  author = {Elgala, Hany and Stańczak, Sławomir},
  pages = {327--332},
  year = {2024},
  doi = {10.1109/mecom61498.2024.10881769}
}

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