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In frequency division duplex (FDD) multiple-input multiple-output (MIMO) wireless communications, limited channel state information (CSI) feedback is a central tool to support advanced single- and multi-user MIMO beamforming/precoding. To…

Information Theory · Computer Science 2020-10-22 Stefan Schwarz

In a frequency division duplex (FDD) massive multiple input multiple output (MIMO) system, the channel state information (CSI) feedback causes a significant bandwidth resource occupation. In order to save the uplink bandwidth resources, a…

Signal Processing · Electrical Eng. & Systems 2019-09-04 Chaojin Qing , Qingyao Yang , Bin Cai , Borui Pan , Jiafan Wang

Accurate channel state information (CSI) feedback plays a vital role in improving the performance gain of massive multiple-input multiple-output (m-MIMO) systems, where the dilemma is excessive CSI overhead versus limited feedback bandwith.…

Signal Processing · Electrical Eng. & Systems 2020-08-18 Yuyao Sun , Wei Xu , Lisheng Fan , Geoffrey Ye Li , George K. Karagiannidis

Deep learning (DL)-based channel state information (CSI) feedback has shown promising potential to improve spectrum efficiency in massive MIMO systems. However, practical DL approaches require a sizeable CSI dataset for each scenario, and…

Information Theory · Computer Science 2023-11-07 Zhenyu Liu , Li Wang , Lianming Xu , Zhi Ding

The emerging field semantic communication is driving the research of end-to-end data transmission. By utilizing the powerful representation ability of deep learning models, learned data transmission schemes have exhibited superior…

Information Theory · Computer Science 2023-05-25 Jincheng Dai , Sixian Wang , Ke Yang , Kailin Tan , Xiaoqi Qin , Zhongwei Si , Kai Niu , Ping Zhang

The application of deep learning (DL)-based channel state information (CSI) feedback frameworks in massive multiple-input multiple-output (MIMO) systems has significantly improved reconstruction accuracy. However, the limited generalization…

Signal Processing · Electrical Eng. & Systems 2024-12-02 Zhilin Du , Zhenyu Liu , Haozhen Li , Shilong Fan , Xinyu Gu , Lin Zhang

Depthwise separable convolutional (DSConv) layers have been successfully applied to deep learning (DL)-based joint source-channel coding (JSCC) schemes to reduce computational complexity. However, a systematic investigation of the layerwise…

Image and Video Processing · Electrical Eng. & Systems 2026-04-27 Ming Ye , Kui Cai , Cunhua Pan , Zhen Mei , Wanting Yang , Chunguo Li

Accurate channel state information (CSI) is essential for downlink precoding in frequency division duplexing (FDD) massive multiple-input multiple-output (MIMO) systems with orthogonal frequency-division multiplexing (OFDM). However,…

Information Theory · Computer Science 2024-07-18 Binggui Zhou , Xi Yang , Jintao Wang , Shaodan Ma , Feifei Gao , Guanghua Yang

Modern Earth Observation (EO) systems increasingly rely on high-resolution imagery to support critical applications such as environmental monitoring, disaster response, and land-use analysis. Although these applications benefit from…

Hybrid beamforming is a promising technology for 5G millimetre-wave communications. However, its implementation is challenging in practical multiple-input multiple-output (MIMO) systems because non-convex optimization problems have to be…

Signal Processing · Electrical Eng. & Systems 2021-07-09 Hamed Hojatian , Vu Nguyen Ha , Jérémy Nadal , Jean-François Frigon , François Leduc-Primeau

Accurate and effective channel state information (CSI) feedback is a key technology for massive multiple-input and multiple-output (MIMO) systems. Recently, deep learning (DL) has been introduced to enhance CSI feedback in massive MIMO…

Signal Processing · Electrical Eng. & Systems 2023-02-01 Han Xiao , Wenqiang Tian , Wendong Liu , Zhi Zhang , Zhihua Shi , Li Guo , Jia Shen

The reciprocity of channel state information (CSI) collected by two devices communicating over a wireless channel has been leveraged to provide security solutions to resource-limited IoT devices. Despite the extensive research that has been…

Signal Processing · Electrical Eng. & Systems 2025-04-14 Nora Basha , Bechir Hamdaoui

In this work, we consider the joint precoding across K transmitters (TXs), sharing the knowledge of the user's data symbols to be transmitted towards K single-antenna receivers (RXs). We consider a distributed channel state information…

Information Theory · Computer Science 2011-11-01 Paul de Kerret , David Gesbert

This paper presents an end-to-end deep learning framework in a movable antenna (MA)-enabled multiuser communication system. In contrast to the conventional works assuming perfect channel state information (CSI), we address the practical CSI…

Information Theory · Computer Science 2025-09-16 Ruizhi Zhang , Yuchen Zhang , Lipeng Zhu , Ying Zhang , Rui Zhang

Reconfigurable intelligent surface (RIS) has received widespread attention owing to the superiority of changing the wireless propagation environment intelligently. Channel feedback is essential in frequency division duplex (FDD)…

Information Theory · Computer Science 2020-12-08 Decai Shen , Linglong Dai

Forward channel state information (CSI) often plays a vital role in scheduling and capacity-approaching transmission optimization for massive multiple-input multiple-output (MIMO) communication systems. In frequency division duplex (FDD)…

Signal Processing · Electrical Eng. & Systems 2020-09-22 Zhenyu Liu , Mason del Rosario , Zhi Ding

Consider a distributed computing system in which the worker nodes are connected over a shared wireless channel. Nodes can store a fraction of the data set over which computation needs to be carried out, and a Map-Shuffle-Reduce protocol is…

Information Theory · Computer Science 2018-10-29 Sukjong Ha , Jingjing Zhang , Osvaldo Simeone , Joonhyuk Kang

In recent years, numerous data-intensive broadcasting applications have emerged at the wireless edge, calling for a flexible tradeoff between distortion, transmission rate, and processing complexity. While deep learning-based joint…

Information Theory · Computer Science 2026-03-24 Zijun Qin , Jingxuan Huang , Zesong Fei , Haichuan Ding , Yulin Shao , Xianhao Chen

Multi-antenna precoding effectively mitigates the interference in wireless networks. However, the resultant performance gains can be significantly compromised in practice if the precoder design fails to account for the inaccuracy in the…

Information Theory · Computer Science 2012-02-28 Kaibin Huang , Rui Zhang

In frequency-division duplex (FDD) massive multiple-input multiple-output (MIMO) systems, the growing number of base station antennas leads to prohibitive feedback overhead for downlink channel state information (CSI). To address this…

Signal Processing · Electrical Eng. & Systems 2024-06-25 Yifan Ma , Hengtao He , Shenghui Song , Jun Zhang , Khaled B. Letaief