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The estimation of direction of arrival (DOA) is a crucial issue in conventional radar, wireless communication, and integrated sensing and communication (ISAC) systems. However, low-cost systems often suffer from imperfect factors, such as…

Signal Processing · Electrical Eng. & Systems 2024-03-21 Peng Chen , Zhimin Chen , Liang Liu , Yun Chen , Xianbin Wang

Perceptive mobile network (PMN) is a recently proposed next-generation network that integrates radar sensing into communication. One major challenge for realizing sensing in PMNs is how to deal with spatially-separated asynchronous…

Signal Processing · Electrical Eng. & Systems 2020-11-19 Zhitong Ni , J. Andrew Zhang , Xiaojing Huang , Kai Yang , Jinhong Yuan

In the practical radar with multiple antennas, the antenna imperfections degrade the system performance. In this paper, the problem of estimating the direction of arrival (DOA) in multiple-input and multiple-output (MIMO) radar system with…

Signal Processing · Electrical Eng. & Systems 2022-03-22 Peng Chen , Zhenxin Cao , Zhimin Chen , Xianbin Wang

Non-orthogonal multiple access (NOMA) technique is important for achieving a high data rate in next-generation wireless communications. A key challenge to fully utilizing the effectiveness of the NOMA technique is the optimization of the…

Information Theory · Computer Science 2024-10-28 Teppei Otsuka , Aohan Li , Hiroki Takesue , Kensuke Inaba , Kazuyuki Aihara , Mikio Hasegawa

With the rapid expansion of low-altitude economy (LAE) services and the growing demand for integrated sensing and communication (ISAC) in air-ground networks, reliable direction-of-arrival (DOA) estimation has become essential for both…

Signal Processing · Electrical Eng. & Systems 2026-04-02 Ye Tian , Tuo Wu , Jintao Wu , He Xu , Yuanjun Shen , Xianfu Lei , Kin-Fai Tong

Estimating the directions of arrival (DOAs) of multiple sources from a single snapshot obtained by a coherent antenna array is a well-known problem, which can be addressed by sparse signal reconstruction methods, where the DOAs are…

Signal Processing · Electrical Eng. & Systems 2021-02-02 Tom Tirer , Oded Bialer

With the extremely large-scale array XL-array deployed in future wireless systems, wireless communication and sensing are expected to operate in the radiative near-field region, which needs to be characterized by the spherical rather than…

Information Theory · Computer Science 2024-07-29 Jiayi Cong , Changsheng You , Jiapeng Li , Li Chen , Beixiong Zheng , Yuanwei Liu , Wen Wu , Yi Gong , Shi Jin , Rui Zhang

The primary goal of this paper is to localize objects in a group of semantically similar images jointly, also known as the object co-localization problem. Most related existing works are essentially weakly-supervised, relying prominently on…

Computer Vision and Pattern Recognition · Computer Science 2022-02-17 Koteswar Rao Jerripothula , Prerana Mukherjee

Current state-of-the-art (SOTA) methods in visual object tracking often require extensive computational resources and vast amounts of training data, leading to a risk of overfitting. This study introduces a more efficient training strategy…

Computer Vision and Pattern Recognition · Computer Science 2023-09-07 Qingmao Wei , Bi Zeng , Guotian Zeng

We present an online multi-task learning approach for adaptive nonlinear control, which we call Online Meta-Adaptive Control (OMAC). The goal is to control a nonlinear system subject to adversarial disturbance and unknown…

Machine Learning · Computer Science 2021-10-28 Guanya Shi , Kamyar Azizzadenesheli , Michael O'Connell , Soon-Jo Chung , Yisong Yue

Understanding associations between paired high-dimensional longitudinal datasets is a fundamental yet challenging problem that arises across scientific domains, including longitudinal multi-omic studies. The difficulty stems from the…

Methodology · Statistics 2026-01-21 Jianbin Tan , Pixu Shi

We address the problem of estimating the pose and shape of vehicles from LiDAR scans, a common problem faced by the autonomous vehicle community. Recent work has tended to address pose and shape estimation separately in isolation, despite…

Computer Vision and Pattern Recognition · Computer Science 2020-09-10 Hunter Goforth , Xiaoyan Hu , Michael Happold , Simon Lucey

The deployment of extremely large-scale array (ELAA) brings higher spectral efficiency and spatial degree of freedom, but triggers issues on near-field channel estimation. Existing near-field channel estimation schemes primarily exploit…

Signal Processing · Electrical Eng. & Systems 2025-09-19 Zhiming Zhu , Shu Xu , Jiexin Zhang , Chunguo Li , Yongming Huang , Luxi Yang

Deconvolution, imaging and calibration of data from radio interferometers is a challenging computational (inverse) problem. The upcoming generation of radio telescopes poses significant challenges to existing, and well proven data reduction…

Instrumentation and Methods for Astrophysics · Physics 2025-06-18 Hendrik Müller , Sanjay Bhatnagar

The fundamental challenge underlying superconducting quantum computing is to characterize heterogeneity and disorder in the underlying quantum circuits. These nonuniform distributions often lead to local electric field concentration, charge…

Mesoscale and Nanoscale Physics · Physics 2023-08-17 R. H. J. Kim , J. M. Park , S. Haeuser , C. Huang , D. Cheng , T. Koschny , J. Oh , C. Kopas , H. Cansizoglu , K. Yadavalli , J. Mutus , L. Zhou , L. Luo , M. Kramer , J. Wang

Continual Learning (CL) empowers AI models to continuously learn from sequential task streams. Recently, parameter-efficient fine-tuning (PEFT)-based CL methods have garnered increasing attention due to their superior performance. They…

Computer Vision and Pattern Recognition · Computer Science 2025-07-15 Lingfeng He , De Cheng , Zhiheng Ma , Huaijie Wang , Dingwen Zhang , Nannan Wang , Xinbo Gao

Non-Local Attention (NLA) is a powerful technique for capturing long-range feature correlations in deep single image super-resolution (SR). However, NLA suffers from high computational complexity and memory consumption, as it requires…

Computer Vision and Pattern Recognition · Computer Science 2024-04-09 Yigang Zhao Chaowei Zheng , Jiannan Su , GuangyongChen , MinGan

Heterogeneous graphs have attracted increasing attention for modeling multi-typed entities and relations in complex real-world systems. Multi-label node classification on heterogeneous graphs is challenging due to structural heterogeneity…

Machine Learning · Computer Science 2026-04-22 Chenghao Zhang , Qingqing Long , Ludi Wang , Wenjuan Cui , Jianjun Yu , Yi Du

Computer-aided medical image analysis is crucial for disease diagnosis and treatment planning, yet limited annotated datasets restrict medical-specific model development. While vision-language models (VLMs) like CLIP offer strong…

Computer Vision and Pattern Recognition · Computer Science 2025-08-07 Zelin Peng , Yichen Zhao , Yu Huang , Piao Yang , Feilong Tang , Zhengqin Xu , Xiaokang Yang , Wei Shen

We study the collaborative image retrieval problem at the wireless edge, where multiple edge devices capture images of the same object from different angles and locations, which are then used jointly to retrieve similar images at the edge…

Image and Video Processing · Electrical Eng. & Systems 2023-02-14 Wing Fei Lo , Nitish Mital , Haotian Wu , Deniz Gündüz