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State-of-the-art schemes for performance analysis and optimization of multiple-input multiple-output systems generally experience degradation or even become invalid in dynamic complex scenarios with unknown interference and channel state…

信息论 · 计算机科学 2022-07-01 Fan Meng , Shengheng Liu , Yongming Huang , Zhaohua Lu

This paper studies the problem of linear precoding for multiple-input multiple-output (MIMO) communication channels employing finite-alphabet signaling. Existing solutions typically suffer from high computational complexity due to costly…

信息论 · 计算机科学 2021-11-08 Maksym A. Girnyk

It has been well known that the achievable rate of multiuser multiple-input multiple-output systems with limited feedback is severely degraded by quantization errors when the number of feedback bits is not sufficient. To overcome such a…

信息论 · 计算机科学 2024-07-09 Wentao Zhou , Di Zhang , Merouane Debbah , Inkyu Lee

We propose a method for channel training and precoding in FDD massive MIMO based on deep neural networks (DNNs), exploiting Downlink (DL) channel covariance knowledge. The DNN is optimized to maximize the DL multi-user sum-rate, by…

信息论 · 计算机科学 2023-03-21 Yi Song , Tianyu Yang , Mahdi Barzegar Khalilsarai , Giuseppe Caire

We consider multi-group multicast precoding designs for cell-free massive multiple-input multiple-output (MIMO) systems. To optimize the transmit and receive beamforming strategies, we focus on minimizing the sum of the maximum mean squared…

信息论 · 计算机科学 2022-11-11 Bikshapathi Gouda , Italo Atzeni , Antti Tölli

In this paper, we consider massive multiple-input-multiple-output (MIMO) communication systems with a uniform planar array (UPA) at the base station (BS) and investigate the downlink precoding with imperfect channel state information (CSI).…

信息论 · 计算机科学 2020-05-28 Junchao Shi , Wenjin Wang , Xinping Yi , Xiqi Gao , Geoffrey Ye Li

Micro-expression recognition (MER), a critical subfield of affective computing, presents greater challenges than macro-expression recognition due to its brief duration and low intensity. While incorporating prior knowledge has been shown to…

计算机视觉与模式识别 · 计算机科学 2025-06-12 Chuang Ma , Shaokai Zhao , Dongdong Zhou , Yu Pei , Zhiguo Luo , Liang Xie , Ye Yan , Erwei Yin

Millimeter wave (mmWave) massive multiple-input multiple-output (MIMO) has been regarded to be an emerging solution for the next generation of communications, in which hybrid analog and digital precoding is an important method for reducing…

信号处理 · 电气工程与系统科学 2019-01-23 Hongji Huang , Yiwei Song , Jie Yang , Guan Gui , Fumiyuki Adachi

Index modulation (IM) reduces the power consumption and hardware cost of the multiple-input multiple-output (MIMO) system by activating part of the antennas for data transmission. However, IM significantly increases the complexity of the…

信息论 · 计算机科学 2021-12-03 Chenwu Zhang , Hancheng Lu , Jinxue Liu

This paper shows that deep neural network (DNN) can be used for efficient and distributed channel estimation, quantization, feedback, and downlink multiuser precoding for a frequency-division duplex massive multiple-input multiple-output…

信息论 · 计算机科学 2021-01-27 Foad Sohrabi , Kareem M. Attiah , Wei Yu

Recent applications of deep convolutional neural networks in medical imaging raise concerns about their interpretability. While most explainable deep learning applications use post hoc methods (such as GradCAM) to generate feature…

计算机视觉与模式识别 · 计算机科学 2023-04-17 Yuanyuan Wei , Roger Tam , Xiaoying Tang

Channel estimation and hybrid precoding are considered for multi-user millimeter wave massive multi-input multi-output system. A deep learning compressed sensing (DLCS) channel estimation scheme is proposed. The channel estimation neural…

信号处理 · 电气工程与系统科学 2020-02-18 Wenyan Ma , Chenhao Qi , Zaichen Zhang , Julian Cheng

The recently emerged symbol-level precoding (SLP) technique has been regarded as a promising solution in multi-user wireless communication systems, since it can convert harmful multi-user interference (MUI) into beneficial signals for…

信息论 · 计算机科学 2021-04-21 Zhu Bo , Rang Liu , Ming Li , Qian Liu

In a recent work, we studied a novel precoding design for cell-free networks called team minimum mean-square error (TMMSE) precoding, which rigorously generalizes centralized MMSE precoding to distributed operations based on…

信息论 · 计算机科学 2022-08-25 Lorenzo Miretti , Emil Björnson , David Gesbert

Efficient resource allocation with hybrid precoder design is essential for massive MIMO systems operating in millimeter wave (mmW) domain. Owing to a higher energy efficiency and a lower complexity of a partially connected hybrid…

信息论 · 计算机科学 2021-02-03 Salman Khalid , Waqas bin Abbas , Farhan Khalid

This paper proposes a novel neural network architecture, that we call an auto-precoder, and a deep-learning based approach that jointly senses the millimeter wave (mmWave) channel and designs the hybrid precoding matrices with only a few…

信息论 · 计算机科学 2019-05-31 Xiaofeng Li , Ahmed Alkhateeb

In massive multiple-input multiple-output (MIMO) system, channel state information (CSI) is essential for the base station to achieve high performance gain. Recently, deep learning is widely used in CSI compression to fight against the…

信息论 · 计算机科学 2020-11-06 Zhilin Lu , Jintao Wang , Jian Song

The design of precoding plays a crucial role in achieving a high downlink sum-rate in multiuser multiple-input multiple-output (MIMO) orthogonal frequency-division multiplexing (OFDM) systems. In this correspondence, we propose a deep…

信息论 · 计算机科学 2024-04-26 Yiran Guo , Wei Chen , Jialong Xu , Lun Li , Bo Ai

Weighted Minimum Mean Square Error (WMMSE) precoding is widely recognized for its near-optimal weighted sum rate performance. However, its practical deployment in massive multi-user (MU) multiple-input multiple-output (MIMO) orthogonal…

机器学习 · 计算机科学 2025-06-23 Kexuan Wang , An Liu

A new data-driven method for operator learning of stochastic differential equations(SDE) is proposed in this paper. The central goal is to solve forward and inverse stochastic problems more effectively using limited data. Deep operator…

机器学习 · 统计学 2022-04-08 Jiahao Zhang , Shiqi Zhang , Guang Lin