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arXiv · 2608.24584

A Transformer for Joint Multi-Receiver Pilotless Wi-Fi Decoding

Xavier Tardy·Grégoire Lefebvre·Apostolos Kountouris·Haïfa Farès·Amor Nafkha
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Abstract

In this paper we discuss the development of a fully pilotless multi-access-point Wi-Fi receiver. This is based on a self-attention Transformer that operates on per-(access point, subcarrier) tokens and outputs bit-wise logits for a standard low-density parity-check decoder. In realistic ray-traced indoor channels, pilotless decoding becomes feasible as soon as some spatial diversity is available. While a single-access point configuration does not attain practical error rates, when compared to an ideal maximum-ratio-combining baseline with perfect channel knowledge, cooperative configurations with three access points achieve coded bit error rates of approximately $10^{-5}$. This is achieved while benefiting from higher spectral efficiency by eliminating pilots.

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Xavier Tardy, Grégoire Lefebvre, Apostolos Kountouris, Haïfa Farès, Amor Nafkha. 2026-08-25. A Transformer for Joint Multi-Receiver Pilotless Wi-Fi Decoding. https://arxiv.org/abs/2608.24584

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