Search Results for author: Bo Ai

Found 40 papers, 4 papers with code

Generative Artificial Intelligence Assisted Wireless Sensing: Human Flow Detection in Practical Communication Environments

no code implementations22 Apr 2024 Jiacheng Wang, Hongyang Du, Dusit Niyato, Zehui Xiong, Jiawen Kang, Bo Ai, Zhu Han, Dong In Kim

Finally, through clustering, G-HFD determines the number of subflows and the number of targets in each subflow, i. e., the subflow size.

AI-Empowered RIS-Assisted Networks: CV-Enabled RIS Selection and DNN-Enabled Transmission

no code implementations18 Apr 2024 Conggang Hu, Yang Lu, Hongyang Du, Mi Yang, Bo Ai, Dusit Niyato

This paper investigates artificial intelligence (AI) empowered schemes for reconfigurable intelligent surface (RIS) assisted networks from the perspective of fast implementation.

Graph Neural Networks for Wireless Networks: Graph Representation, Architecture and Evaluation

no code implementations18 Apr 2024 Yang Lu, Yuhang Li, Ruichen Zhang, Wei Chen, Bo Ai, Dusit Niyato

Graph neural networks (GNNs) have been regarded as the basic model to facilitate deep learning (DL) to revolutionize resource allocation in wireless networks.

Building Semantic Communication System via Molecules: An End-to-End Training Approach

no code implementations15 Apr 2024 Yukun Cheng, Wei Chen, Bo Ai

Furthermore, we propose a channel network to enable the E2E learning over the non-differentiable molecular channel.

Blockage-Aware Robust Beamforming in RIS-Aided Mobile Millimeter Wave MIMO Systems

no code implementations2 Mar 2024 Yan Yang, Shuping Dang, Miaowen Wen, Bo Ai, Rose Qingyang Hu

For the rate maximization problem, an accelerated projected gradient descent (PGD) algorithm is developed to solve the computational challenge of high-dimensional RIS phase-shift matrix (PSM) optimization.

Channel Measurements and Modeling for Dynamic Vehicular ISAC Scenarios at 28 GHz

no code implementations1 Mar 2024 Zhengyu Zhang, Ruisi He, Bo Ai, Mi Yang, Xuejian Zhang, Ziyi Qi, Yuan Yuan

Integrated sensing and communication (ISAC) is a promising technology for 6G, with the goal of providing end-to-end information processing and inherent perception capabilities for future communication systems.

Characterization of Wireless Channel Semantics: A New Paradigm

no code implementations1 Mar 2024 Zhengyu Zhang, Ruisi He, Mi Yang, Xuejian Zhang, Ziyi Qi, Yuan Yuan, Bo Ai

Recently, deep learning enabled semantic communications have been developed to understand transmission content from semantic level, which realize effective and accurate information transfer.

Non-stationarity Characteristics in Dynamic Vehicular ISAC Channels at 28 GHz

no code implementations1 Mar 2024 Zhengyu Zhang, Ruisi He, Mi Yang, Xuejian Zhang, Ziyi Qi, Hang Mi, Guiqi Sun, Jingya Yang, Bo Ai

It is necessary to carry out measurement, characterization, and modeling for vehicular ISAC channels as the basic theoretical support for system design.

A Cluster-Based Statistical Channel Model for Integrated Sensing and Communication Channels

no code implementations1 Mar 2024 Zhengyu Zhang, Ruisi He, Bo Ai, Mi Yang, Yong Niu, Zhangdui Zhong, Yujian Li, Xuejian Zhang, Jing Li

However, some important features of ISAC channels have not been well characterized, for example, most existing ISAC channel models consider communication channels and sensing channels independently, whereas ignoring correlation under the consistent environment.

Novel 3D Geometry-Based Stochastic Models for Non-Isotropic MIMO Vehicle-to-Vehicle Channels

no code implementations1 Dec 2023 Yi Yuan, Cheng-Xiang Wang, Xiang Cheng, Bo Ai, David I. Laurenson

Moreover, a novel parameter computation method is proposed for jointly calculating the azimuth and elevation angles in the SoS channel simulator.

PICO

GNN-Based Beamforming for Sum-Rate Maximization in MU-MISO Networks

no code implementations7 Nov 2023 Yuhang Li, Yang Lu, Bo Ai, Octavia A. Dobre, Zhiguo Ding, Dusit Niyato

This paper studies the GNN-based learning approach for the sum-rate maximization in multiple-user multiple-input single-output (MU-MISO) networks subject to the users' individual data rate requirements and the power budget of the base station.

Invariance is Key to Generalization: Examining the Role of Representation in Sim-to-Real Transfer for Visual Navigation

no code implementations23 Oct 2023 Bo Ai, Zhanxin Wu, David Hsu

The data-driven approach to robot control has been gathering pace rapidly, yet generalization to unseen task domains remains a critical challenge.

Visual Navigation

Rate Compatible LDPC Neural Decoding Network: A Multi-Task Learning Approach

no code implementations10 Oct 2023 Yukun Cheng, Wei Chen, Lun Li, Bo Ai

Deep learning based decoding networks have shown significant improvement in decoding LDPC codes, but the neural decoders are limited by rate-matching operations such as puncturing or extending, thus needing to train multiple decoders with different code rates for a variety of channel conditions.

Multi-Task Learning

A Comprehensive Study of PAPR Reduction Techniques for Deep Joint Source Channel Coding in OFDM Systems

no code implementations21 Sep 2023 Maolin Liu, Wei Chen, Jialong Xu, Bo Ai

Recently, deep joint source channel coding (DJSCC) techniques have been extensively studied and have shown significant performance with limited bandwidth and low signal to noise ratio.

Generative AI-aided Joint Training-free Secure Semantic Communications via Multi-modal Prompts

no code implementations5 Sep 2023 Hongyang Du, Guangyuan Liu, Dusit Niyato, Jiayi Zhang, Jiawen Kang, Zehui Xiong, Bo Ai, Dong In Kim

The system jointly optimizes the diffusion step, jamming, and transmitting power with the aid of the generative diffusion models, enabling successful and secure transmission of the source messages.

RIS-assisted High-Speed Railway Integrated Sensing and Communication System

no code implementations19 Aug 2023 Panpan Li, Yong Niu, Hao Wu, Zhu Han, Guiqi Sun, Ning Wang, Zhangdui Zhong, Bo Ai

One technology that has the potential to improve wireless communications in years to come is integrated sensing and communication (ISAC).

Deep Plug-and-Play Prior for Multitask Channel Reconstruction in Massive MIMO Systems

1 code implementation9 Aug 2023 Weixiao Wan, Wei Chen, Shiyue Wang, Geoffrey Ye Li, Bo Ai

The proposed method corresponding to these three channel reconstruction tasks employs a common DL model, which greatly reduces the overhead of model training and storage.

Multi-Task Learning

Deep-Learning-Aided Alternating Least Squares for Tensor CP Decomposition and Its Application to Massive MIMO Channel Estimation

no code implementations23 May 2023 Xiao Gong, Wei Chen, Bo Ai, Geert Leus

To achieve accurate and low-latency channel estimation, good and fast CP decomposition algorithms are desired.

Deep Learning for Asynchronous Massive Access with Data Frame Length Diversity

no code implementations12 May 2023 Yanna Bai, Wei Chen, Bo Ai, Petar Popovski

Grant-free non-orthogonal multiple access has been regarded as a viable approach to accommodate access for a massive number of machine-type devices with small data packets.

Action Detection Activity Detection

Towards ISAC-Empowered Vehicular Networks: Framework, Advances, and Opportunities

no code implementations1 May 2023 Zhen Du, Fan Liu, Yunxin Li, Weijie Yuan, Yuanhao Cui, Zenghui Zhang, Christos Masouros, Bo Ai

Connected and autonomous vehicle (CAV) networks face several challenges, such as low throughput, high latency, and poor localization accuracy.

CSI-PPPNet: A One-Sided One-for-All Deep Learning Framework for Massive MIMO CSI Feedback

no code implementations29 Nov 2022 Wei Chen, Weixiao Wan, Shiyue Wang, Peng Sun, Geoffrey Ye Li, Bo Ai

The CSI is compressed via linear projections at the UE, and is recovered at the BS using deep learning (DL) with plug-and-play priors (PPP).

Denoising

Whodunit? Learning to Contrast for Authorship Attribution

1 code implementation23 Sep 2022 Bo Ai, Yuchen Wang, Yugin Tan, Samson Tan

To the best of our knowledge, we are the first to integrate contrastive learning with pre-trained language model fine-tuning for authorship attribution.

Authorship Attribution Contrastive Learning +1

Energy-Efficient Cell-Free Massive MIMO Through Sparse Large-Scale Fading Processing

1 code implementation29 Aug 2022 Shuaifei Chen, Jiayi Zhang, Emil Björnson, Özlem Tuğfe Demir, Bo Ai

In this paper, we propose a sparse distributed processing design for CF mMIMO, where the AP-UE association and long-term signal processing coefficients are jointly optimized.

5G for Railways: the Next Generation Railway Dedicated Communications

no code implementations7 Jul 2022 Ruisi He, Bo Ai, Zhangdui Zhong, Mi Yang, Ruifeng Chen, Jianwen Ding, Zhangfeng Ma, Guiqi Sun, Changzhu Liu

It is thus necessary for railways to replace the current 2G-based technology with the next generation railway dedicated communication system with improved capacity and capability, and the 5G for railways (5G-R) technology is a promising solution for further intelligent railways.

Artificial intelligence enabled radio propagation for communications-Part I: Channel characterization and antenna-channel optimization

no code implementations24 Nov 2021 Chen Huang, Ruisi He, Bo Ai, Andreas F. Molisch, Buon Kiong Lau, Katsuyuki Haneda, Bo Liu, Cheng-Xiang Wang, Mi Yang, Claude Oestges, Zhangdui Zhong

To provide higher data rates, as well as better coverage, cost efficiency, security, adaptability, and scalability, the 5G and beyond 5G networks are developed with various artificial intelligence techniques.

Artificial intelligence enabled radio propagation for communications-Part II: Scenario identification and channel modeling

no code implementations24 Nov 2021 Chen Huang, Ruisi He, Bo Ai, Andreas F. Molisch, Buon Kiong Lau, Katsuyuki Haneda, Bo Liu, Cheng-Xiang Wang, Mi Yang, Claude Oestges, Zhangdui Zhong

This two-part paper investigates the application of artificial intelligence (AI) and in particular machine learning (ML) to the study of wireless propagation channels.

Deep Learning-Based Power Control for Uplink Cell-Free Massive MIMO Systems

no code implementations18 Oct 2021 Yongshun Zhang, Jiayi Zhang, Yu Jin, Stefano Buzzi, Bo Ai

In this paper, a general framework for deep learning-based power control methods for max-min, max-product and max-sum-rate optimization in uplink cell-free massive multiple-input multiple-output (CF mMIMO) systems is proposed.

Deep Visual Navigation under Partial Observability

no code implementations16 Sep 2021 Bo Ai, Wei Gao, Vinay, David Hsu

Importantly, we integrate the multiple neural network modules into a unified controller that achieves robust performance for visual navigation in complex, partially observable environments.

Imitation Learning Navigate +1

Cluster-based Characterization and Modeling for UAV Air-to-Ground Time-Varying Channels

no code implementations26 Aug 2021 Zhuangzhuang Cui, Ke Guan, Claude Oestges, César Briso-Rodríguez, Bo Ai, Zhangdui Zhong

With the deep integration between the unmanned aerial vehicle (UAV) and wireless communication, UAV-based air-to-ground (AG) propagation channels need more detailed descriptions and accurate models.

Clustering

Coalition Game Based Full-duplex Popular Content Distribution in mmWave Vehicular Networks

no code implementations29 Jan 2021 Yibing Wang, Hao Wu, Yong Niu, Zhu Han, Bo Ai, Zhangdui Zhong

We evaluate the proposed scheme by extensive simulations in mmWave vehicular networks.

Fairness Information Theory Networking and Internet Architecture Information Theory

Channel Modeling for UAV Communications: State of the Art, Case Studies, and Future Directions

no code implementations12 Dec 2020 Zhuangzhuang Cui, Ke Guan, César Briso-Rodríguez, Bo Ai, Zhangdui Zhong, Claude Oestges

As essential aerial platforms, unmanned aerial vehicles (UAVs) play an increasingly important role in broad wireless connectivity and high-data-rate transmission for future communication systems.

Physical Layer Security Enhancement With Reconfigurable Intelligent Surface-Aided Networks

no code implementations1 Dec 2020 Jiayi Zhang, Hongyang Du, Qiang Sun, Derrick Wing Kwan Ng, Bo Ai

Reconfigurable intelligent surface (RIS)-aided wireless communications have drawn significant attention recently.

Information Theory Signal Processing Information Theory

Solving Sparse Linear Inverse Problems in Communication Systems: A Deep Learning Approach With Adaptive Depth

no code implementations29 Oct 2020 Wei Chen, BoWen Zhang, Shi Jin, Bo Ai, Zhangdui Zhong

Sparse signal recovery problems from noisy linear measurements appear in many areas of wireless communications.

Structured Massive Access for Scalable Cell-Free Massive MIMO Systems

no code implementations18 Jun 2020 Shuaifei Chen, Jiayi Zhang, Emil Björnson, Jing Zhang, Bo Ai

However, there are still many unsolved practical issues in cell-free massive MIMO systems, whereof scalable massive access implementation is one of the most vital.

Fairness

Satellite-Terrestrial Channel Characterization in High-Speed Railway Environment at 22.6 GHz

no code implementations11 Jun 2020 Lei Ma, Ke Guan, Dong Yan, Danping He, Nuno R. Leonor, Bo Ai, Junhyeong Kim

In this paper, the satellite-terrestrial channel at 22. 6 GHz is characterized for a typical high-speed railway (HSR) environment.

Deep Transfer Learning Based Downlink Channel Prediction for FDD Massive MIMO Systems

1 code implementation27 Dec 2019 Yuwen Yang, Feifei Gao, Zhimeng Zhong, Bo Ai, Ahmed Alkhateeb

Specifically, we develop the direct-transfer algorithm based on the fully-connected neural network architecture, where the network is trained on the data from all previous environments in the manner of classical deep learning and is then fine-tuned for new environments.

Meta-Learning Transfer Learning

Multi-Antenna Channel Interpolation via Tucker Decomposed Extreme Learning Machine

no code implementations26 Dec 2018 Han Zhang, Bo Ai, Wenjun Xu, Li Xu, Shuguang Cui

Channel interpolation is an essential technique for providing high-accuracy estimation of the channel state information (CSI) for wireless systems design where the frequency-space structural correlations of multi-antenna channel are typically hidden in matrix or tensor forms.

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