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A major obstacle for widespread deployment of frequency division duplex (FDD)-based Massive multiple-input multiple-output (MIMO) communications is the large signaling overhead for reporting full downlink (DL) channel state information…

Information Theory · Computer Science 2019-01-14 Maximilian Arnold , Sebastian Dörner , Sebastian Cammerer , Sarah Yan , Jakob Hoydis , Stephan ten Brink

\textit{Why does the literature consider the channel-state-information (CSI) as a 2/3-D image? What are the pros-and-cons of this consideration for accuracy-complexity trade-off?} Next generations of wireless communications require…

Information Theory · Computer Science 2020-01-22 Makan Zamanipour

In the realm of reconfigurable intelligent surface (RIS)-assisted wireless communications, efficient channel state information (CSI) feedback is paramount. This paper introduces RIS-CoCsiNet, a novel deep learning-based framework designed…

Information Theory · Computer Science 2024-10-30 Jiajia Guo , Xi Yang , Chao-Kai Wen , Shi Jin , Geoffrey Ye Li

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

Massive MIMO wireless FDD systems are often confronted by the challenge to efficiently obtain downlink channel state information (CSI). Previous works have demonstrated the potential in CSI encoding and recovery by take advantage of…

Information Theory · Computer Science 2021-12-20 Yu-Chien Lin , Zhenyu Liu , Ta-Sung Lee , Zhi Ding

The potential advantages of intelligent wireless communications with millimeter wave (mmWave) and massive multiple-input multiple-output (MIMO) are based on the availability of instantaneous channel state information (CSI) at the base…

Information Theory · Computer Science 2022-11-03 Yibin Zhang , Jinlong Sun , Guan Gui , Yun Lin , Haris Gacanin , Hikmet Sari , Fumiyuki Adachi

Channel state information (CSI) is a fundamental component in both wireless communication and sensing systems, enabling critical functions such as radio resource optimization and environmental perception. In wireless sensing, data scarcity…

Machine Learning · Computer Science 2025-12-09 Zijian Zhao , Fanyi Meng , Zhonghao Lyu , Hang Li , Xiaoyang Li , Guangxu Zhu

Wireless links using massive MIMO transceivers are vital for next generation wireless communications networks networks. Precoding in Massive MIMO transmission requires accurate downlink channel state information (CSI). Many recent works…

Information Theory · Computer Science 2022-01-17 Mason del Rosario , Zhi Ding

For frequency division duplex systems, the essential downlink channel state information (CSI) feedback includes the links of compression, feedback, decompression and reconstruction to reduce the feedback overhead. One efficient CSI feedback…

Signal Processing · Electrical Eng. & Systems 2023-06-06 Xiangyi Li , Jiajia Guo , Chao-Kai Wen , Shi Jin , Shuangfeng Han , Xiaoyun Wang

Deep learning (DL)-based channel state information (CSI) feedback has received significant research attention in recent years. However, previous research has overlooked the potential privacy disclosure problem caused by the transmission of…

Signal Processing · Electrical Eng. & Systems 2023-12-05 Yiming Cui , Jiajia Guo , 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…

Signal Processing · Electrical Eng. & Systems 2025-12-15 Yiran Guo , Wei Chen , Bo Ai , Lun Li

Efficient channel state information (CSI) compression is essential in frequency division duplexing (FDD) massive multiple-input multiple-output (MIMO) systems due to the substantial feedback overhead. Recently, deep learning-based…

Information Theory · Computer Science 2026-05-19 Mehdi Sattari , Deniz Gündüz , Tommy Svensson

In order to unlock the full advantages of massive multiple input multiple output (MIMO) in the downlink, channel state information (CSI) is required at the base station (BS) to optimize the beamforming matrices. In frequency division duplex…

Information Theory · Computer Science 2021-07-09 Yusha Liu , Osvaldo Simeone

This paper proposes a model-driven deep learning (MDDL)-based channel estimation and feedback scheme for wideband millimeter-wave (mmWave) massive hybrid multiple-input multiple-output (MIMO) systems, where the angle-delay domain channels'…

Information Theory · Computer Science 2022-01-20 Xisuo Ma , Zhen Gao , Feifei Gao , Marco Di Renzo

Acquiring downlink channel state information (CSI) at the base station is vital for optimizing performance in massive Multiple input multiple output (MIMO) Frequency-Division Duplexing (FDD) systems. While deep learning architectures have…

Signal Processing · Electrical Eng. & Systems 2024-03-14 Yu-Chien Lin , Yan Xin , Ta-Sung Lee , Charlie , Zhang , Zhi Ding

In this paper, we propose a novel method for efficient implementation of a massive Multiple-Input Multiple-Output (massive MIMO) system with Frequency Division Duplexing (FDD) operation. Our main objective is to reduce the large overhead…

Information Theory · Computer Science 2017-10-24 Mahdi Barzegar Khalilsarai , Saeid Haghighatshoar , Xinping Yi , Giuseppe Caire

Next-generation wireless technologies such as 6G aim to meet demanding requirements such as ultra-high data rates, low latency, and enhanced connectivity. Extremely Large-Scale MIMO (XL-MIMO) and Reconfigurable Intelligent Surface (RIS) are…

Information Theory · Computer Science 2026-01-01 Muhammad Kamran Saeed , Ashfaq Khokhar , Shakil Ahmed

With the widespread deployment of fifth-generation (5G) wireless networks, research on sixth-generation (6G) technology is gaining momentum. Artificial Intelligence (AI) is anticipated to play a significant role in 6G, particularly through…

Information Theory · Computer Science 2025-05-26 Zhen Qiao , Jiang Xue , Junkai Zhang , Guanzhang Liu , Xiaoqin Ma , Runhua Li , Faheem A. Khan , John S. Thompson , Zongben Xu

Massive multiple-input multiple-output (MIMO) is a promising approach for cellular communication due to its energy efficiency and high achievable data rate. These advantages, however, can be realized only when channel state information…

Information Theory · Computer Science 2015-04-01 Min Soo Sim , Jeonghun Park , Chan-Byoung Chae , Robert W. Heath

Coded caching provides significant gains over conventional uncoded caching by creating multicasting opportunities among distinct requests. Massive multiple-input multiple-output (MIMO) systems require downlink channel state information…

Information Theory · Computer Science 2019-07-08 Qianqian Yang , Mahdi Boloursaz Mashhadi , Deniz Gündüz
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