Search Results for author: Jianhua Zhang

Found 29 papers, 2 papers with code

Digital Twin Channel for 6G: Concepts, Architectures and Potential Applications

no code implementations19 Mar 2024 Heng Wang, Jianhua Zhang, Gaofeng Nie, Li Yu, Zhiqiang Yuan, Tongjie Li, Jialin Wang, Guangyi Liu

Digital twin channel (DTC) is the real-time mapping of a wireless channel from the physical world to the digital world, which is expected to provide significant performance enhancements for the sixth-generation (6G) air-interface design.

Joint Sparsity Pattern Learning Based Channel Estimation for Massive MIMO-OTFS Systems

no code implementations6 Mar 2024 Kuo Meng, Shaoshi Yang, Xiao-Yang Wang, Yan Bu, Yurong Tang, Jianhua Zhang, Lajos Hanzo

We propose a channel estimation scheme based on joint sparsity pattern learning (JSPL) for massive multi-input multi-output (MIMO) orthogonal time-frequency-space (OTFS) modulation aided systems.

360ORB-SLAM: A Visual SLAM System for Panoramic Images with Depth Completion Network

no code implementations19 Jan 2024 Yichen Chen, Yiqi Pan, Ruyu Liu, Haoyu Zhang, Guodao Zhang, Bo Sun, Jianhua Zhang

To enhance the performance and effect of AR/VR applications and visual assistance and inspection systems, visual simultaneous localization and mapping (vSLAM) is a fundamental task in computer vision and robotics.

Depth Completion Simultaneous Localization and Mapping

Physics-informed Graphical Neural Network for Power System State Estimation

no code implementations29 Dec 2023 Quang-Ha Ngo, Bang L. H. Nguyen, Tuyen V. Vu, Jianhua Zhang, Tuan Ngo

State estimation is highly critical for accurately observing the dynamic behavior of the power grids and minimizing risks from cyber threats.

Towards 6G Digital Twin Channel Using Radio Environment Knowledge Pool

no code implementations16 Dec 2023 Jialin Wang, Jianhua Zhang, Yuxiang Zhang, Yutong Sun, Gaofeng, Nie, Lianzheng Shi, Ping Zhang, Guangyi Liu

The digital twin channel (DTC) is crucial for 6G wireless autonomous networks as it replicates the wireless channel fading states in 6G air interface transmissions.

How to Extend 3D GBSM to Integrated Sensing and Communication Channel with Sharing Feature?

no code implementations25 Oct 2023 Yameng Liu, Jianhua Zhang, Yuxiang Zhang, Huiwen Gong, Tao Jiang, Guangyi Liu

The proposed approach can be summarized as follows: Firstly, an ISAC channel model is proposed, where shared and non-shared components are superimposed for both communication and sensing.

SCVCNet: Sliding cross-vector convolution network for cross-task and inter-individual-set EEG-based cognitive workload recognition

no code implementations21 Sep 2023 Qi Wang, Li Chen, Zhiyuan Zhan, Jianhua Zhang, Zhong Yin

This paper presents a generic approach for applying the cognitive workload recognizer by exploiting common electroencephalogram (EEG) patterns across different human-machine tasks and individual sets.

EEG

A Hybrid Optimization and Deep Learning Algorithm for Cyber-resilient DER Control

no code implementations31 Jul 2023 Mohammad Panahazari, Matthew Koscak, Jianhua Zhang, Daqing Hou, Jing Wang, David Wenzhong Gao

To this end, a hybrid feedback-based optimization algorithm along with deep learning forecasting technique is proposed to specifically address the cyber-related issues.

Channel Measurement, Modeling, and Simulation for 6G: A Survey and Tutorial

no code implementations26 May 2023 Jianhua Zhang, Jiaxin Lin, Pan Tang, Yuxiang Zhang, Huixin Xu, Tianyang Gao, Haiyang Miao, Zeyong Chai, Zhengfu Zhou, Yi Li, Huiwen Gong, Yameng Liu, Zhiqiang Yuan, Lei Tian, Shaoshi Yang, Liang Xia, Guangyi Liu, Ping Zhang

Then, a survey of the progress of the 6G channel research regarding the above five promising technologies is presented in terms of the latest measurement campaigns, new characteristics, modeling methods, and research prospects.

3GPP-Like THz Channel Modeling for Indoor Office and Urban Microcellular Scenarios

no code implementations24 May 2023 Zhaowei Chang, Jianhua Zhang, Pan Tang, Lei Tian, Yadong Yang, Jiaxin Lin, and Guangyi Liu

Generally, these results are helpful to understand and model the THz channel and apply the THz communication technique for 6G.

Lightweight Machine Learning for Digital Cross-Link Interference Cancellation with RF Chain Characteristics in Flexible Duplex MIMO Systems

no code implementations23 Apr 2023 Jing-Sheng Tan, Shaoshi Yang, Kuo Meng, Jianhua Zhang, Yurong Tang, Yan Bu, Guizhen Wang

The flexible duplex (FD) technique, including dynamic time-division duplex (D-TDD) and dynamic frequency-division duplex (D-FDD), is regarded as a promising solution to achieving a more flexible uplink/downlink transmission in 5G-Advanced or 6G mobile communication systems.

Channel Sparsity Variation and Model-Based Analysis on 6, 26, and 132 GHz Measurements

no code implementations17 Feb 2023 Ximan Liu, Jianhua Zhang, Pan Tang, Lei Tian, Harsh Tataria, Shu Sun, Mansoor Shafi

In addition, a new intra-cluster power allocation model based on measurements is proposed to characterize the effects of sparsity in the delay domain of the 3GPP channel model.

How to Extend 3D GBSM to RIS Cascade Channel with Non-ideal Phase Modulation?

no code implementations15 Feb 2023 Huiwen Gong, Jianhua Zhang, Yuxiang Zhang, Zhengfu Zhou, Guangyi Liu

In the modeling process, we consider the non-ideal phase modulation of the RIS element, so as to accurately characterize the dependence of its phase modulation on the incoming wave angle.

Capacity Analysis of Holographic MIMO Channels with Practical Constraints

no code implementations29 Dec 2022 Yuan Zhang, Jianhua Zhang, Yuxiang Zhang, Yuan YAO, Guangyi Liu

However, the channel might not satisfy isotropic scattering because of generalized angle distributions, and the antenna gain is limited by the array aperture in reality.

A Shared Cluster-based Stochastic Channel Model for Joint Communication and Sensing Systems

no code implementations12 Nov 2022 Yameng Liu, Jianhua Zhang, Yuxiang Zhang, Zhiqiang Yuan, Guangyi Liu

Then, a stochastic JCAS channel model is proposed to capture the sharing feature, where shared and non-shared clusters by the two channels are defined and superimposed.

How to Define the Propagation Environment Semantics and Its Application in Scatterer-Based Beam Prediction

no code implementations17 Sep 2022 Yutong Sun, Jianhua Zhang, Li Yu, Zhen Zhang, Ping Zhang

Inspired by task-oriented semantic communication and machine learning (ML) powered environment-channel mapping methods, this work aims to provide a new view of the environment from the semantic level, which defines the propagation environment semantics (PES) as a limited set of propagation environment semantic symbols (PESS) for diverse application tasks.

Semantic Visual Simultaneous Localization and Mapping: A Survey

no code implementations14 Sep 2022 Kaiqi Chen, Jianhua Zhang, Jialing Liu, Qiyi Tong, Ruyu Liu, ShengYong Chen

Numerous publications have reported that, by combining with the semantic information with vSLAM, the semantic vSLAM systems have the capability of solving the above problems in recent years.

Robot Navigation Simultaneous Localization and Mapping

DRL Enabled Coverage and Capacity Optimization in STAR-RIS Assisted Networks

no code implementations1 Sep 2022 Xinyu Gao, Wenqiang Yi, Yuanwei Liu, Jianhua Zhang, Ping Zhang

Moreover, in order to improve the performance of the MO-PPO algorithm, two update strategies, i. e., action-value-based update strategy (AVUS) and loss function-based update strategy (LFUS), are investigated.

Computer Vision Aided mmWave Beam Alignment in V2X Communications

no code implementations23 Jul 2022 Weihua Xu, Feifei Gao, Xiaoming Tao, Jianhua Zhang, Ahmed Alkhateeb

Visual information, captured for example by cameras, can effectively reflect the sizes and locations of the environmental scattering objects, and thereby can be used to infer communications parameters like propagation directions, receiver powers, as well as the blockage status.

3D Object Detection object-detection

Frequency-Angle Two-Dimensional Reflection Coefficient Modeling Based on Terahertz Channel Measurement

no code implementations11 Jul 2022 Zhaowei Chang, Jianhua Zhang, Pan Tang, Lei Tian, Li Yu, Guangyi Liu, Liang Xia

In this letter, the reflection coefficient of the THz channel is researched based on extensive measurement campaigns.

Adversarial Training-Aided Time-Varying Channel Prediction for TDD/FDD Systems

no code implementations25 Apr 2022 Zhen Zhang, Yuxiang Zhang, Jianhua Zhang, Feifei Gao

In this paper, a time-varying channel prediction method based on conditional generative adversarial network (CPcGAN) is proposed for time division duplexing/frequency division duplexing (TDD/FDD) systems.

Generative Adversarial Network

Collaborative Visual Inertial SLAM for Multiple Smart Phones

no code implementations23 Jun 2021 Jialing Liu, Ruyu Liu, Kaiqi Chen, Jianhua Zhang, Dongyan Guo

Each agent can independently explore the environment, run a visual-inertial odometry module online, and then send all the measurement information to a central server with higher computing resources.

Accurate Object Association and Pose Updating for Semantic SLAM

no code implementations21 Dec 2020 Kaiqi Chen, Jialing Liu, Jianhua Zhang, Zhenhua Wang

The key to solving this problem is to correctly associate multiple object measurements of one object landmark, and refine the pose of object landmark.

Multiple Object Tracking Object +1

Consistency-Aware Graph Network for Human Interaction Understanding

1 code implementation ICCV 2021 Zhenhua Wang, Jiajun Meng, Dongyan Guo, Jianhua Zhang, Javen Qinfeng Shi, ShengYong Chen

Compared with the progress made on human activity classification, much less success has been achieved on human interaction understanding (HIU).

3D human pose and shape estimation

A general representation of dynamical systems for reservoir computing

1 code implementation3 Jul 2019 Sidney Pontes-Filho, Anis Yazidi, Jianhua Zhang, Hugo Hammer, Gustavo B. M. Mello, Ioanna Sandvig, Gunnar Tufte, Stefano Nichele

The advantages of such implementation are its usage on specialized and optimized deep learning libraries, the capabilities to generalize it to other types of networks and the possibility to evolve cellular automata and other dynamical systems in terms of connectivity, update and learning rules.

Deep Learning for Physical-Layer 5G Wireless Techniques: Opportunities, Challenges and Solutions

no code implementations21 Apr 2019 Hongji Huang, Song Guo, Guan Gui, Zhen Yang, Jianhua Zhang, Hikmet Sari, Fumiyuki Adachi

The new demands for high-reliability and ultra-high capacity wireless communication have led to extensive research into 5G communications.

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