用于联合多接收机无导频Wi-Fi解码的Transformer
A Transformer for Joint Multi-Receiver Pilotless Wi-Fi Decoding
- IETR - UMR CNRS 6164, CentraleSupélec（伊特尔实验室（UMR CNRS 6164），中央苏黎世高等学院）
- Orange Research（橙研）
机构由 AI 辅助整理，请以论文原文为准。
AI总结：
该研究开发了一种基于自注意力Transformer的全无导频多接入点Wi-Fi接收机，在三个接入点协作配置下于室内信道实现约10^-5的编码误码率，提升了频谱效率。
AI中文摘要：
本文讨论一种全无导频多接入点Wi-Fi接收机的开发，该接收机基于自注意力Transformer，其针对每一个（接入点、子载波）令牌进行操作，并为标准低密度奇偶校验解码器输出逐位对数几率。在真实的射线追踪室内信道中，只要存在一定空间多样性，无导频解码就变得可行。单接入点配置无法达到实用误码率，与具备完美信道知识的理想最大比合并基线相比，具备三个接入点的协作配置可达到约10^-5的编码误码率，同时通过消除导频获得更高的频谱效率。
英文摘要：
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.
