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arXiv 2602.04126eess.SP
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基于大型语言模型的语义前导符设计用于数据辅助信道估计

Semantic Pilot Design for Data-Aided Channel Estimation Using a Large Language Model

Pohang University of Science and Technology(浦项科技大学);Seoul National University(首尔大学)

Sojeong Park, Hyun Jong Yang

AI总结:

本文提出利用大型语言模型设计语义前导符,用于文本包含数据传输中的数据辅助信道估计。通过比对初始解码文本与语言模型校正版本,识别可靠解码符号,提升信道估计性能。

摘要:

本文提出了一种基于大型语言模型的语义前导符设计,用于文本包含数据传输中的数据辅助信道估计。在该场景中,信道退化常以解码文本中的拼写错误形式出现,可通过大型语言模型进行校正。所提方法通过比较初始解码文本与语言模型校正版本,识别可靠的解码符号。所选符号集被称为语义前导符,用于数据辅助信道估计。据我们所知,这是首次利用语义信息进行可靠符号选择的工作。仿真结果表明,所提方案优于传统仅使用前导符的估计方法,实现了更低的信道估计归一化均方误差和相位误差,以及更低的误码率。

英文摘要:

This paper proposes a semantic pilot design for data-aided channel estimation in text-inclusive data transmission, using a large language model (LLM). In this scenario, channel impairments often appear as typographical errors in the decoded text, which can be corrected using an LLM. The proposed method compares the initially decoded text with the LLM-corrected version to identify reliable decoded symbols. A set of selected symbols, referred to as a semantic pilot, is used as an additional pilot for data-aided channel estimation. To the best of our knowledge, this work is the first to leverage semantic information for reliable symbol selection. Simulation results demonstrate that the proposed scheme outperforms conventional pilot-only estimation, achieving lower normalized mean squared error and phase error of the estimated channel, as well as reduced bit error rate.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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