no code implementations • 10 May 2024 • Wei Fan, Zhiqiang Yuan, Yejian Lyu, Jianhua Zhang, Gert Pedersen, Jonathan Borrill, Fengchun Zhang
To this end, this work develops a channel sounder dedicated to mid-band ELAA systems based on a distributed modular vector network analyzer incorporating radio-over-fiber (RoF), phase compensation, and virtual antenna array schemes.
no code implementations • 5 May 2024 • Yinghe Miao, Li Yu, Yuxiang Zhang, Hongbo Xing, Jianhua Zhang
Interestingly, a dynamic ray tracing (DRT) approach for channel prediction has recently been proposed, which utilizes the results of traditional RT to extrapolate the multipath geometry evolution.
no code implementations • 28 Apr 2024 • Haoxiao Wang, Bo Peng, Jianhua Zhang, Xu Cheng
Our model surpassed baseline models in terms of classification accuracy, underscoring the AdaFSNet network's efficiency and effectiveness in handling time series classification tasks.
no code implementations • 19 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.
no code implementations • 6 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.
no code implementations • 19 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.
no code implementations • 29 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.
no code implementations • 16 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.
no code implementations • 25 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.
1 code implementation • 21 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.
no code implementations • 31 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.
no code implementations • 3 Jun 2023 • Zibing Shen, Jianhua Zhang, Li Yu, Yuxiang Zhang, Zhen Zhang, Xidong Hu
A common and accurate dataset is essential for the research of AI communication.
no code implementations • 26 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.
no code implementations • 24 May 2023 • Zhaowei Chang, Jianhua Zhang, Pan Tang, Lei Tian, Hao Jiang, Ximan Liu, and Guangyi Liu
Finally, the channel capacity at THz frequency band is evaluated by the reconstructed CIRs generated by the GBSM using the measured statistical values and the 3GPP default values.
no code implementations • 23 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.
no code implementations • 17 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.
no code implementations • 15 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.
no code implementations • 29 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.
no code implementations • 12 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.
no code implementations • 17 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.
no code implementations • 14 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.
no code implementations • 1 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.
no code implementations • 23 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.
no code implementations • 11 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.
no code implementations • 25 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.
no code implementations • 23 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.
no code implementations • 14 Apr 2021 • Chunhua Ye, Zhong Yin, Chenxi Wu, Xiayidai Abulaiti, Yixing Zhang, Zhenqi Sun, Jianhua Zhang
The combination of Frequency and entropy feature and CNN has the highest classification accuracy, which is 85. 34%.
no code implementations • 19 Jan 2021 • Weihua Xu, Feifei Gao, Jianhua Zhang, Xiaoming Tao, Ahmed Alkhateeb
Channel covariance matrix (CCM) is one critical parameter for designing the communications systems.
no code implementations • 21 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.
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).
1 code implementation • 3 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.
no code implementations • 21 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.