arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1802.01290cs.ITmath.IT
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基于深度学习的波束域mmWave大规模MIMO系统信道估计

Deep Learning-based Channel Estimation for Beamspace mmWave Massive MIMO Systems

Hengtao He, Chao-Kai Wen, Shi Jin, Geoffrey Ye Li

摘要:

在波束空间毫米波(mmWave)大规模多输入多输出系统中,当接收机配备有限数量的射频(RF)链时,信道估计是非常具有挑战性的。为了解决这个问题,我们利用一个学习的基于去噪的近似消息传递(LDAMP)网络。这种神经网络可以从大量的训练数据中学习信道结构和估计信道。此外,我们提供了一个分析框架的渐近性能的信道估计。基于我们的分析和仿真结果,LDAMP神经网络显着优于国家的最先进的压缩感知为基础的算法,即使当接收机配备了少量的RF链。因此,深度学习是毫米波通信中信道估计的有力工具。

英文摘要:

Channel estimation is very challenging when the receiver is equipped with a limited number of radio-frequency (RF) chains in beamspace millimeter-wave (mmWave) massive multiple-input and multiple-output systems. To solve this problem, we exploit a learned denoising-based approximate message passing (LDAMP) network. This neural network can learn channel structure and estimate channel from a large number of training data. Furthermore, we provide an analytical framework on the asymptotic performance of the channel estimator. Based on our analysis and simulation results, the LDAMP neural network significantly outperforms state-of-the-art compressed sensingbased algorithms even when the receiver is equipped with a small number of RF chains. Therefore, deep learning is a powerful tool for channel estimation in mmWave communications.

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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