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arXiv 2407.20123eess.SP
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基于Koopman理论的双自编码器上下文增强CSI跟踪

Context-Enhanced CSI Tracking Using Koopman-Inspired Dual Autoencoders in Dynamic Wireless Environments

Anis Hamadouche, Mathini Sellathurai

AI总结:

本文提出一种结合物理信息自编码器和学习Koopman算子的双自编码器框架,用于动态无线环境中CSI的跟踪与预测,通过共享潜在状态空间实现可解释的物理一致表示。

摘要:

本文介绍了一种新颖的框架,通过利用融合了学习Koopman算子的物理信息自编码器(PIAE)来跟踪和预测信道状态信息(CSI)。所提出的方法将CSI建模为由内在信道行为和外生上下文因素(如位置、温度和大气条件)共同支配的非线性动态系统。架构包含两个自编码器——一个用于CSI,另一个用于上下文输入——通过共享的潜在状态空间连接,其中Koopman算子捕捉CSI动态的线性时间演变。这种耦合使能够准确、数据驱动地预测CSI轨迹,同时通过结构化的、物理一致的表示保持可解释性。该框架支持实时更新信道知识图(CKM),增强复杂且时间变化环境中的通信系统的适应性和可靠性。通过将Koopman理论与学习的潜在表示相结合,所提出的方法提供了一种可扩展且隐私保护的解决方案,适用于下一代无线网络。实验证明其在多样信道条件下能够提供高保真的CSI预测。

英文摘要:

This paper introduces a novel framework for tracking and predicting Channel State Information (CSI) by leveraging Physics-Informed Autoencoders (PIAE) integrated with a learned Koopman operator. The proposed approach models CSI as a nonlinear dynamical system governed by both intrinsic channel behavior and exogenous contextual factors such as position, temperature, and atmospheric conditions. The architecture comprises dual autoencoders-one dedicated to CSI and another to contextual inputs-linked via a shared latent state space, within which the Koopman operator captures the linear temporal evolution of CSI dynamics. This coupling enables accurate, data-driven forecasting of CSI trajectories while maintaining interpretability through a structured, physics-consistent representation. The framework supports real-time updates to the Channel Knowledge Map (CKM), enhancing the adaptability and reliability of communication systems in complex and time-varying environments. By unifying Koopman theory with learned latent representations, the proposed method provides a scalable and privacy-preserving solution for next-generation wireless networks. Empirical results demonstrate its effectiveness in delivering high-fidelity CSI predictions under diverse channel conditions.

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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