Search Results for author: Haiyang Zhang

Found 28 papers, 5 papers with code

Near-Field Wideband Secure Communications: An Analog Beamfocusing Approach

no code implementations15 Nov 2023 Yuchen Zhang, Haiyang Zhang, Sa Xiao, Wanbin Tang, Yonina C. Eldar

In the rapidly advancing landscape of 6G, characterized by ultra-high-speed wideband transmission in millimeter-wave and terahertz bands, our paper addresses the pivotal task of enhancing physical layer security (PLS) within near-field wideband communications.

Label-free Node Classification on Graphs with Large Language Models (LLMS)

1 code implementation7 Oct 2023 Zhikai Chen, Haitao Mao, Hongzhi Wen, Haoyu Han, Wei Jin, Haiyang Zhang, Hui Liu, Jiliang Tang

In light of these observations, this work introduces a label-free node classification on graphs with LLMs pipeline, LLM-GNN.

Node Classification

Beam Retrieval: General End-to-End Retrieval for Multi-Hop Question Answering

2 code implementations17 Aug 2023 Jiahao Zhang, Haiyang Zhang, Dongmei Zhang, Yong liu, Shen Huang

This approach maintains multiple partial hypotheses of relevant passages at each step, expanding the search space and reducing the risk of missing relevant passages.

Multi-hop Question Answering Question Answering +1

A Robust Integrated Multi-Strategy Bus Control System via Deep Reinforcement Learning

no code implementations16 Aug 2023 Qinghui Nie, Jishun Ou, Haiyang Zhang, Jiawei Lu, Shen Li, Haotian Shi

An efficient urban bus control system has the potential to significantly reduce travel delays and streamline the allocation of transportation resources, thereby offering enhanced and user-friendly transit services to passengers.

Hybrid RIS-Assisted MIMO Dual-Function Radar-Communication System

no code implementations28 Mar 2023 Zhuoyang Liu, Haiyang Zhang, Tianyao Huang, Feng Xu, Yonina C. Eldar

Dual-function radar-communication (DFRC) technology is emerging in next-generation wireless systems.

Hardware Implementation of Task-based Quantization in Multi-user Signal Recovery

no code implementations27 Jan 2023 Xing Zhang, Haiyang Zhang, Nimrod Glazer, Oded Cohen, Eliya Reznitskiy, Shlomi Savariego, Moshe Namer, Yonina C. Eldar

In this work, we apply task-based quantization to multi-user signal recovery and present a hardware prototype implementation.


Near-Field Sparse Channel Representation and Estimation in 6G Wireless Communications

no code implementations27 Dec 2022 Xing Zhang, Haiyang Zhang, Yonina C. Eldar

In this case, the spherical wave assumption which takes into account both the user angle and distance is more accurate than the conventional planar one that is only related to the user angle.

Dictionary Learning

Near-Field Channel Estimation for Extremely Large-Scale Array Communications: A model-based deep learning approach

no code implementations28 Nov 2022 Xiangyu Zhang, Zening Wang, Haiyang Zhang, Luxi Yang

In particular, we first formulate the XL-MIMO near-field channel estimation task as a compressed sensing problem using the spatial gridding-based sparsifying dictionary, and then solve the resulting problem by applying the Learning Iterative Shrinkage and Thresholding Algorithm (LISTA).

Dictionary Learning

Near-field Localization with Dynamic Metasurface Antennas

no code implementations28 Oct 2022 Qianyu Yang, Anna Guerra, Francesco Guidi, Nir Shlezinger, Haiyang Zhang, Davide Dardari, Baoyun Wang, Yonina C. Eldar

We use a direct positioning estimation method based on curvature-of-arrival of the impinging wavefront to obtain the user location, and characterize the effects of DMA tuning on the estimation accuracy.

Beamforming Design for Integrated Sensing and Wireless Power Transfer Systems

no code implementations27 Oct 2022 Qianyu Yang, Haiyang Zhang, Baoyun Wang

This letter proposes a new concept of integrated sensing and wireless power transfer (ISWPT), where radar sensing and wireless power transfer functions are integrated into one hardware platform.

Joint Microstrip Selection and Beamforming Design for MmWave Systems with Dynamic Metasurface Antennas

no code implementations22 Oct 2022 Wei Huang, Haiyang Zhang, Nir Shlezinger, Yonina C. Eldar

Dynamic metasurface antennas (DMAs) provide a new paradigm to realize large-scale antenna arrays for future wireless systems.

Physics Embedded Machine Learning for Electromagnetic Data Imaging

no code implementations26 Jul 2022 Rui Guo, Tianyao Huang, Maokun Li, Haiyang Zhang, Yonina C. Eldar

To benefit from prior knowledge in big data and the theoretical constraint of physical laws, physics embedded ML methods for EM imaging have become the focus of a large body of recent work.

BIG-bench Machine Learning Geophysics

BiTAT: Neural Network Binarization with Task-dependent Aggregated Transformation

no code implementations4 Jul 2022 Geon Park, Jaehong Yoon, Haiyang Zhang, Xing Zhang, Sung Ju Hwang, Yonina C. Eldar

Neural network quantization aims to transform high-precision weights and activations of a given neural network into low-precision weights/activations for reduced memory usage and computation, while preserving the performance of the original model.

Binarization Quantization

6G Wireless Communications: From Far-field Beam Steering to Near-field Beam Focusing

no code implementations24 Mar 2022 Haiyang Zhang, Nir Shlezinger, Francesco Guidi, Davide Dardari, Yonina C. Eldar

As a consequence, it is expected that some portion of future 6G wireless communications may take place in the radiating near-field (Fresnel) region, in addition to the far-field operation as in current wireless technologies.

Jointly Learned Symbol Detection and Signal Reflection in RIS-Aided Multi-user MIMO Systems

no code implementations14 Feb 2022 Liuhang Wang, Nir Shlezinger, George C. Alexandropoulos, Haiyang Zhang, Baoyun Wang, Yonina C. Elda

Reconfigurable Intelligent Surfaces (RISs) are regarded as a key technology for future wireless communications, enabling programmable radio propagation environments.

Channel Estimation with Simultaneous Reflecting and Sensing Reconfigurable Intelligent Metasurfaces

no code implementations11 Feb 2022 Haiyang Zhang, Nir Shlezinger, Idban Alamzadeh, George C. Alexandropoulos, Mohammadreza F. Imani, Yonina C. Eldar

As an indicative application of HRISs, we formulate and solve the individual channels identification problem for the uplink of multi-user HRIS-empowered systems.

Task-Based Graph Signal Compression

1 code implementation24 Oct 2021 Pei Li, Nir Shlezinger, Haiyang Zhang, Baoyun Wang, Yonina C. Eldar

The common framework for graph signal compression is based on sampling, resulting in a set of continuous-amplitude samples, which in turn have to be quantized into a finite bit representation.


Near-Field Wireless Power Transfer with Dynamic Metasurface Antennas

no code implementations10 Oct 2021 Haiyang Zhang, Nir Shlezinger, Francesco Guidi, Davide Dardari, Mohammadreza F Imani, Yonina C Eldar

Radio frequency wireless power transfer (WPT) enables charging low-power mobile devices without relying on wired infrastructure.

Near-field Wireless Power Transfer for 6G Internet-of-Everything Mobile Networks: Opportunities and Challenges

no code implementations17 Aug 2021 Haiyang Zhang, Nir Shlezinger, Francesco Guidi, Davide Dardari, Mohammadreza F. Imani, Yonina C. Eldar

Radiating wireless power transfer (WPT) brings forth the possibility to cost-efficiently charge wireless devices without requiring a wiring infrastructure.

DualGraph: A Graph-Based Method for Reasoning About Label Noise

no code implementations CVPR 2021 Haiyang Zhang, XiMing Xing, Liang Liu

Unreliable labels derived from large-scale dataset prevent neural networks from fully exploring the data.

Learning with noisy labels

Beam Focusing for Near-Field Multi-User MIMO Communications

no code implementations27 May 2021 Haiyang Zhang, Nir Shlezinger, Francesco Guidi, Davide Dardari, Mohammadreza F. Imani, Yonina C. Eldar

As the ability to achieve beam focusing is dictated by the transmit antenna, we study near-field signaling considering different antenna structures, including fully-digital architectures, hybrid phase shifter-based precoders, and the emerging dynamic metasurface antenna (DMA) architecture for massive MIMO arrays.

UserReg: A Simple but Strong Model for Rating Prediction

no code implementations15 Feb 2021 Haiyang Zhang, Ivan Ganchev, Nikola S. Nikolov, Mark Stevenson

We compare the effectiveness of UserReg with three linear CF models that are widely-used as baselines, and with a set of recently proposed complex models that are based on deep learning or graph techniques.

Collaborative Filtering Recommendation Systems

cross-modal knowledge enhancement mechanism for few-shot learning

no code implementations1 Jan 2021 Haiyang Zhang, Jiaming Duan, Liang Liu

After that, with the message-passing mechanism, CKEM selects and transfers relevant knowledge from external semantic knowledge bank to original visual-based class representations in Knowledge Fusion Model(KFM).

Few-Shot Learning

On Data Augmentation for Extreme Multi-label Classification

no code implementations22 Sep 2020 Danqing Zhang, Tao Li, Haiyang Zhang, Bing Yin

Our contributions are two-factored: (1) we introduce a new state-of-the-art classifier that uses label attention with RoBERTa and combine it with our augmentation framework for further improvement; (2) we present a broad study on how effective are different augmentation methods in the XMC task.

Classification Data Augmentation +2

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