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arXiv 2308.16601eess.SP
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利用高斯混合模型的辅助数据信道估计

Data-Aided Channel Estimation Utilizing Gaussian Mixture Models

Franz Weißer, Nurettin Turan, Dominik Semmler, Wolfgang Utschick

AI总结:

本文提出两种利用数据符号和导频符号的半盲信道估计方法,通过估计子空间改进高斯混合模型信道估计器,支持并行化和滤波器预计算,在真实数据上优于现有方法。

摘要:

在这项工作中,我们提出了两种方法,除了导频符号外,还利用数据符号来提高多用户系统中的信道估计质量,即所谓的半盲信道估计。为此,基于所有接收符号估计一个子空间,并利用它来提高仅使用导频符号进行信道估计的基于高斯混合模型的信道估计器的估计质量。两种提出的方法都允许并行化。其中一种提出的方法甚至支持估计滤波器的预计算,这在计算复杂度方面是有益的。针对我们可用的真实信道测量数据的数值模拟表明,所提出的方法优于所研究的现有最先进信道估计器。

英文摘要:

In this work, we propose two methods that utilize data symbols in addition to pilot symbols for improved channel estimation quality in a multi-user system, so-called semi-blind channel estimation. To this end, a subspace is estimated based on all received symbols and utilized to improve the estimation quality of a Gaussian mixture model-based channel estimator, which solely uses pilot symbols for channel estimation. Both of the proposed approaches allow for parallelization. Even the precomputation of estimation filters, which is beneficial in terms of computational complexity, is enabled by one of the proposed methods. Numerical simulations for real channel measurement data available to us show that the proposed methods outperform the studied state-of-the-art channel estimators.

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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