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Deep learning (DL) has shown great potential for enhancing channel state information (CSI) feedback in multiple-input multiple-output (MIMO) communication systems, a subject currently under study by the 3GPP standards body. Digital twins…

信息论 · 计算机科学 2025-05-05 Tzu-Hao Huang , Chao-Kai Wen , Shang-Ho Tsai , Trung Q. Duong

Decentralized learning enables edge users to collaboratively train models by exchanging information via device-to-device communication, yet prior works have been limited to wireless networks with fixed topologies and reliable workers. In…

信息论 · 计算机科学 2022-02-03 Eunjeong Jeong , Matteo Zecchin , Marios Kountouris

In this work, we develop a joint denoising and feedback strategy for channel state information in frequency division duplex systems. In such systems, the biggest challenge is the overhead incurred when the mobile terminal has to send the…

信息论 · 计算机科学 2025-09-05 Valentina Rizzello , Wolfgang Utschick

In the last decade, data-driven algorithms outperformed traditional optimization-based algorithms in many research areas, such as computer vision, natural language processing, etc. However, extensive data usages bring a new challenge or…

机器学习 · 计算机科学 2021-12-02 Shih-Chun Lin , Chia-Hung Lin

Deep learning has emerged as a promising solution for efficient channel state information (CSI) feedback in frequency division duplex (FDD) massive MIMO systems. Conventional deep learning-based methods typically rely on a deep autoencoder…

信号处理 · 电气工程与系统科学 2025-07-29 Haotian Tian , Lixiang Lian , Jiaqi Cao , Sijie Ji

Artificial intelligence (AI) has emerged as a promising tool for channel state information (CSI) feedback. While recent research primarily focuses on improving feedback accuracy on a specific dataset through novel architectures, the…

信息论 · 计算机科学 2025-04-10 Jiajia Guo , Yiming Cui , Chao-Kai Wen , Shi Jin

With the rapid growth in the volume of data sets, models, and devices in the domain of deep learning, there is increasing attention on large-scale distributed deep learning. In contrast to traditional distributed deep learning, the…

分布式、并行与集群计算 · 计算机科学 2024-04-10 Feng Liang , Zhen Zhang , Haifeng Lu , Victor C. M. Leung , Yanyi Guo , Xiping Hu

Massive multiple-input multiple-output can obtain more performance gain by exploiting the downlink channel state information (CSI) at the base station (BS). Therefore, studying CSI feedback with limited communication resources in…

信号处理 · 电气工程与系统科学 2024-10-28 Muhan Chen , Jiajia Guo , Chao-Kai Wen , Shi Jin , Geoffrey Ye Li , Ang Yang

We propose an efficient protocol for decentralized training of deep neural networks from distributed data sources. The proposed protocol allows to handle different phases of model training equally well and to quickly adapt to concept…

机器学习 · 计算机科学 2018-11-14 Michael Kamp , Linara Adilova , Joachim Sicking , Fabian Hüger , Peter Schlicht , Tim Wirtz , Stefan Wrobel

Recently, inspired by successful applications in many fields, deep learning (DL) technologies for CSI acquisition have received considerable research interest from both academia and industry. Considering the practical feedback mechanism of…

信号处理 · 电气工程与系统科学 2022-06-16 Xin Wang , Xiaolin Hou , Lan Chen , Yoshihisa Kishiyama , Takahiro Asai

Accurate channel state information (CSI) acquisition is essential for modern wireless systems, which becomes increasingly difficult under large antenna arrays, strict pilot overhead constraints, and diverse deployment environments. Existing…

信息论 · 计算机科学 2026-03-17 Xingyu Zhou , Le Liang , Hao Ye , Jing Zhang , Chao-Kai Wen , Shi Jin

As the number of antennas in frequency-division duplex (FDD) multiple-input multiple-output (MIMO) systems increases, acquiring channel state information (CSI) becomes increasingly challenging due to limited spectral resources and feedback…

信号处理 · 电气工程与系统科学 2025-12-15 Yiran Guo , Wei Chen , Bo Ai , Lun Li

In this paper, we consider an extremely large-scale massive multiple-input-multiple-output (XL-MIMO) system. As the scale of antenna arrays increases, the range of near-field communications also expands. In this case, the signals no longer…

信号处理 · 电气工程与系统科学 2024-05-24 Zhangjie Peng , Ruijing Liu , Zhaotian Li , Cunhua Pan , Jiangzhou Wang

While neural lossy compression techniques have markedly advanced the efficiency of Channel State Information (CSI) compression and reconstruction for feedback in MIMO communications, efficient algorithms for more challenging and practical…

Efficient channel state information (CSI) compression at the user equipment plays a key role in enabling accurate channel reconstruction and precoder design in massive multiple-input multiple-output systems. A key challenge lies in…

信息论 · 计算机科学 2026-02-04 Xi Chen , Homa Esfahanizadeh , Foad Sohrabi

Despite the development of various deep learning methods for Wi-Fi sensing, package loss often results in noncontinuous estimation of the Channel State Information (CSI), which negatively impacts the performance of the learning models. To…

机器学习 · 计算机科学 2024-12-10 Zijian Zhao , Tingwei Chen , Fanyi Meng , Hang Li , Xiaoyang Li , Guangxu Zhu

In order to achieve reliable communication with a high data rate of massive multiple-input multiple-output (MIMO) systems in frequency division duplex (FDD) mode, the estimated channel state information (CSI) at the receiver needs to be fed…

信息论 · 计算机科学 2021-12-14 J. Guo , L. Wang , F. Li , J. Xue

Acquiring accurate channel state information (CSI) is critical for reliable and efficient wireless communication, but challenges such as high pilot overhead and channel aging hinder timely and accurate CSI acquisition. CSI prediction, which…

信号处理 · 电气工程与系统科学 2025-10-14 Mehdi Sattari , Javad Aliakbari , Alexandre Graell i Amat , Tommy Svensson

Channel state information (CSI) reporting is important for multiple-input multiple-output (MIMO) transmitters to achieve high capacity and energy efficiency in frequency division duplex (FDD) mode. CSI reporting for massive MIMO systems…

信息论 · 计算机科学 2019-12-24 Zhenyu Liu , Lin Zhang , Zhi Ding

In frequency-division duplexing (FDD) massive multiple-input multiple-output (MIMO), deep learning (DL)-based superimposed channel state information (CSI) feedback has presented promising performance. However, it is still facing many…

信号处理 · 电气工程与系统科学 2020-03-13 Chaojin Qing , Bin Cai , Qingyao Yang , Jiafan Wang , Chuan Huang