Search Results for author: Yongchao Wang

Found 13 papers, 3 papers with code

Design of Artificial Interference Signals for Covert Communication Aided by Multiple Friendly Nodes

no code implementations14 Apr 2024 Xuyang Zhao. Wei Guo, Yongchao Wang

The optimization aims to design artificial noise signals within the space to facilitate covert communication while minimizing the impact on the performance of legitimate communication.

Riemannian optimization

MCF: Mutual Correction Framework for Semi-Supervised Medical Image Segmentation

1 code implementation CVPR 2023 Yongchao Wang, Bin Xiao, Xiuli Bi, Weisheng Li, Xinbo Gao

Inspired by the plain contrast idea, MCF introduces two different subnets to explore and utilize the discrepancies between subnets to correct cognitive bias of the model.

Image Segmentation Pseudo Label +3

Edge Graph Neural Networks for Massive MIMO Detection

no code implementations22 May 2022 Hongyi Li, Junxiang Wang, Yongchao Wang

Massive Multiple-Input Multiple-Out (MIMO) detection is an important problem in modern wireless communication systems.

Multi-Level Contrastive Learning for Cross-Lingual Alignment

no code implementations26 Feb 2022 Beiduo Chen, Wu Guo, Bin Gu, Quan Liu, Yongchao Wang

Cross-language pre-trained models such as multilingual BERT (mBERT) have achieved significant performance in various cross-lingual downstream NLP tasks.

Contrastive Learning Cross-Lingual Transfer +1

Secure Transmission for IRS-Assisted MIMO MmWave Systems

no code implementations9 Jan 2022 Long Yang, Jiangtao Wang, Xuan Xue, Jia Shi, Yongchao Wang

In this paper, we investigate the secure beamforming design in an intelligent reflection surface (IRS) assisted millimeter wave (mmWave) system, where the hybrid beamforming (HB) and the passive beamforming (PB) are employed by the transmitter and the IRS, respectively.

Data Informed Residual Reinforcement Learning for High-Dimensional Robotic Tracking Control

no code implementations28 Oct 2021 Cong Li, Fangzhou Liu, Yongchao Wang, Martin Buss

The learning inefficiency of reinforcement learning (RL) from scratch hinders its practical application towards continuous robotic tracking control, especially for high-dimensional robots.

reinforcement-learning Reinforcement Learning (RL)

Designing Binary Sequence Set with Optimized Correlation Properties via ADMM Approach

no code implementations6 Oct 2021 Jiangtao Wang, Yongchao Wang

In this paper, we design low correlation binary sequences favorable in wireless communication and radar applications.

Indexing Context-Sensitive Reachability

1 code implementation3 Sep 2021 Qingkai Shi, Yongchao Wang, Charles Zhang

Many context-sensitive data flow analyses can be formulated as a variant of the all-pairs Dyck-CFL reachability problem, which, in general, is of sub-cubic time complexity and quadratic space complexity.

Towards Quantized Model Parallelism for Graph-Augmented MLPs Based on Gradient-Free ADMM Framework

1 code implementation20 May 2021 Junxiang Wang, Hongyi Li, Zheng Chai, Yongchao Wang, Yue Cheng, Liang Zhao

Theoretical convergence to a (quantized) stationary point of the pdADMM-G algorithm and the pdADMM-G-Q algorithm is provided with a sublinear convergence rate $o(1/k)$, where $k$ is the number of iterations.

Quantization

Model-Free Incremental Adaptive Dynamic Programming Based Approximate Robust Optimal Regulation

no code implementations4 May 2021 Cong Li, Yongchao Wang, Fangzhou Liu, Qingchen Liu, Martin Buss

This paper presents a new formulation for model-free robust optimal regulation of continuous-time nonlinear systems.

Efficient QAM Signal Detector for Massive MIMO Systems via PS-ADMM Approach

no code implementations16 Apr 2021 Quan Zhang, Jiangtao Wang, Yongchao Wang

In this paper, we design an efficient quadrature amplitude modulation (QAM) signal detector for massive multiple-input multiple-output (MIMO) communication systems via the penalty-sharing alternating direction method of multipliers (PS-ADMM).

A Low-Complexity ADMM-based Massive MIMO Detectors via Deep Neural Networks

no code implementations27 Feb 2021 Isayiyas Nigatu Tiba, Quan Zhang, Jing Jiang, Yongchao Wang

An alternate direction method of multipliers (ADMM)-based detectors can achieve good performance in both small and large-scale multiple-input multiple-output (MIMO) systems.

Designing Massive MIMO Detector via PS-ADMM approach

no code implementations14 Oct 2020 Quan Zhang, Yongchao Wang

Then, the higher modulation signals are decomposed into a sum of multiple binary variables through their inherent structures, by exploiting introduced binary variables as penalty functions, the detection optimization model is equivalent to a nonconvex sharing minimization problem.

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