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arXiv · 2504.02946

Low-Complexity Detection of Permutational Index Modulation for Noncoherent Communications

Marc Vilà-Insa·Aniol Martí·Meritxell Lamarca·Jaume Riba
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Abstract

This work presents a massive SIMO scheme for wireless communications with one-shot noncoherent detection. It is based on permutational index modulation over OFDM. Its core principle is to convey information on the ordering in which a fixed collection of values is mapped onto a set of OFDM subcarriers. A spherical code is obtained which provides improved robustness against channel impairments. A simple detector based on the sorting of quadratic metrics of data is proposed. By exploiting statistical channel state information and hardening, it reaches near-ML error performance with a low-complexity implementation.

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Marc Vilà-Insa, Aniol Martí, Meritxell Lamarca, Jaume Riba. 2025-07-04. Low-Complexity Detection of Permutational Index Modulation for Noncoherent Communications. https://doi.org/10.1109/lwc.2025.3585351

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