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In this paper, we propose a learning-based low-overhead channel estimation method for coordinated beamforming in ultra-dense networks. We first show through simulation that the channel state information (CSI) of geographically separated…

信息论 · 计算机科学 2017-05-16 Sheng Chen , Zhiyuan Jiang , Jingchu Liu , Rath Vannithamby , Sheng Zhou , Zhisheng Niu , Ye Wu

This paper proposes a spatially common sparsity based adaptive channel estimation and feedback scheme for frequency division duplex based massive multi-input multi-output (MIMO) systems, which adapts training overhead and pilot design to…

信息论 · 计算机科学 2023-10-20 Zhen Gao , Linglong Dai , Zhaocheng Wang , Sheng Chen

Deep learning has been used to tackle problems in wireless communication including signal detection, channel estimation, traffic prediction, and demapping. Achieving reasonable results with deep learning typically requires large datasets…

信号处理 · 电气工程与系统科学 2024-08-30 Uyoata E. Uyoata , Ramoni O. Adeogun

We propose an innovative machine learning-based technique to address the problem of channel acquisition at the base station in frequency division duplex systems. In this context, the base station reconstructs the full channel state…

信息论 · 计算机科学 2021-10-05 Wolfgang Utschick , Valentina Rizzello , Michael Joham , Zhengxiang Ma , Leonard Piazzi

In orthogonal frequency division modulation (OFDM) communication systems, channel state information (CSI) is required at receiver due to the fact that frequency-selective fading channel leads to disgusting inter-symbol interference (ISI)…

信息论 · 计算机科学 2015-04-22 Guan Gui , Li Xu , Lin Shan , Fumiyuki Adachi

In this work, we consider a system of covert communication with the aid of a full-duplex (FD) receiver to enhance the performance in a more realistic scenario, i.e., only the channel distribution information (CDI) rather than channel state…

信号处理 · 电气工程与系统科学 2018-11-13 Tingzhen Xu , Ling Xu , Xiaoyu Liu , Zaoyu Lu

Massive multiple-input multiple-output (MIMO) enjoys great advantage in 5G wireless communication systems owing to its spectrum and energy efficiency. However, hundreds of antennas require large volumes of pilot overhead to guarantee…

信号处理 · 电气工程与系统科学 2023-09-26 An Chen , Wenbo Xu , Liyang Lu , Yue Wang

Future wireless systems are expected to employ a substantially larger number of transmit ports for channel state information (CSI) estimation compared to current specifications. Although scaling ports improves spectral efficiency, it also…

信号处理 · 电气工程与系统科学 2026-01-26 Advaith Arun , Shiv Shankar , Dhivagar Baskaran , Klutto Milleth , Bhaskar Ramamurthi

Covert communication's effectiveness critically depends on precise channel state information (CSI). This paper investigates the impact of imperfect CSI on achievable covert communication performance in a two-hop relay system. Firstly, we…

信息论 · 计算机科学 2026-03-03 Jiaqing Bai , Ji He , Yanping Chen , Yulong Shen , Xiaohong Jiang

In this research paper approximate mean of signal-to-interference-plus-noise ratio (SINR) under imperfect channel state information (CSI) is computed and maximized for throughput enhancement of MIMO interference networks. Each transmitter…

信息论 · 计算机科学 2018-08-03 Ali Dalir , Hassan Aghaeinia

Deep learning has been widely applied for the channel state information (CSI) feedback in frequency division duplexing (FDD) massive multiple-input multiple-output (MIMO) system. For the typical supervised training of the feedback model,…

信息论 · 计算机科学 2022-07-26 Boyuan Zhang , Haozhen Li , Xin Liang , Xinyu Gu , Lin Zhang

In this paper, we consider the federated learning (FL) problem in the presence of communication errors. We model the link between the devices and the central node (CN) by a packet erasure channel, where the local parameters from devices are…

机器学习 · 计算机科学 2022-04-13 Mahyar Shirvanimoghaddam , Ayoob Salari , Yifeng Gao , Aradhika Guha

Physical layer security is an emerging technique to improve the wireless communication security, which is widely regarded as a complement to cryptographic technologies. To design physical layer security techniques under practical scenarios,…

信息论 · 计算机科学 2013-07-22 Biao He , Xiangyun Zhou , Thushara D. Abhayapala

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…

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

Deep learning (DL)-based channel state information (CSI) feedback has shown great potential in improving spectrum efficiency in massive MIMO systems. However, DL models optimized for specific environments often experience performance…

信息论 · 计算机科学 2024-10-11 Zhenyu Liu , Yi Ma , Rahim Tafazolli

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

信号处理 · 电气工程与系统科学 2023-10-26 Han Xiao , Wenqiang Tian , Wendong Liu , Jiajia Guo , Zhi Zhang , Shi Jin , Zhihua Shi , Li Guo , Jia Shen

High-precision atomic structure calculations require accurate modelling of electronic correlations typically addressed via the configuration interaction (CI) problem on a multiconfiguration wave function expansion. The latter can easily…

原子物理 · 物理学 2023-06-22 Pavlo Bilous , Adriana Pálffy , Florian Marquardt

Channel state information (CSI) feedback is necessary for the frequency division duplexing (FDD) multiple input multiple output (MIMO) systems due to the channel non-reciprocity. With the help of deep learning, many works have succeeded in…

信息论 · 计算机科学 2023-02-07 Zhilin Lu , Xudong Zhang , Rui Zeng , Jintao Wang

A dual-robust design of beamforming is investigated in an integrated sensing and communication (ISAC) system.Existing research on robust ISAC waveform design, while proposing solutions to imperfect channel state information (CSI), generally…

信号处理 · 电气工程与系统科学 2024-05-20 Wanting Lyu , Songjie Yang , Yue Xiu , Xinyi Chen , Zhongpei Zhang , Chadi Assi , Chau Yuan