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Weakly Supervised Object Localization (WSOL), which aims to localize objects by only using image-level labels, has attracted much attention because of its low annotation cost in real applications. Recent studies leverage the advantage of…

计算机视觉与模式识别 · 计算机科学 2023-03-13 Haotian Bai , Ruimao Zhang , Jiong Wang , Xiang Wan

Compressed sensing (CS) MRI relies on adequate undersampling of the k-space to accelerate the acquisition without compromising image quality. Consequently, the design of optimal sampling patterns for these k-space coefficients has received…

图像与视频处理 · 电气工程与系统科学 2021-01-26 Iris A. M. Huijben , Bastiaan S. Veeling , Ruud J. G. van Sloun

This paper investigates the robust design of symbol-level precoding (SLP) for multiuser multiple-input multiple-output (MIMO) downlink transmission with imperfect channel state information (CSI) caused by channel aging. By utilizing the a…

信号处理 · 电气工程与系统科学 2024-02-08 Yafei Wang , Xinping Yi , Hongwei Hou , Wenjin Wang , Shi Jin

This letter studies the sensing-assisted channel prediction for a multi-antenna orthogonal frequency division multiplexing (OFDM) system operating in realistic and complex wireless environments. In this system,an integrated sensing and…

信号处理 · 电气工程与系统科学 2025-05-15 Junjie He , Zixiang Ren , Jianping Yao , Han Hu , Tony Xiao Han , Jie Xu

As advanced image manipulation techniques emerge, detecting the manipulation becomes increasingly important. Despite the success of recent learning-based approaches for image manipulation detection, they typically require expensive…

计算机视觉与模式识别 · 计算机科学 2023-09-06 Yuanhao Zhai , Tianyu Luan , David Doermann , Junsong Yuan

Pseudo-label-based semi-supervised learning (SSL) has achieved great success on raw data utilization. However, its training procedure suffers from confirmation bias due to the noise contained in self-generated artificial labels. Moreover,…

计算机视觉与模式识别 · 计算机科学 2022-09-12 Fan Yang , Kai Wu , Shuyi Zhang , Guannan Jiang , Yong Liu , Feng Zheng , Wei Zhang , Chengjie Wang , Long Zeng

This paper develops a linear minimum mean-square error (LMMSE) channel estimator for single and multicarrier systems that takes advantage of the mutual coupling in antenna arrays. We model the mutual coupling through multiport networks and…

信息论 · 计算机科学 2023-04-18 Bamelak Tadele , Volodymyr Shyianov , Faouzi Bellili , Amine Mezghani

Massive multiuser multiple-input multiple-output (MIMO) and millimeter-wave (mmWave) communication are key physical layer technologies in future wireless systems. Their deployment, however, is expected to incur excessive baseband processing…

硬件体系结构 · 计算机科学 2025-11-17 Seyed Hadi Mirfarshbafan , Christoph Studer

We propose in this work to employ the Box-LASSO, a variation of the popular LASSO method, as a low-complexity decoder in a massive multiple-input multiple-output (MIMO) wireless communication system. The Box-LASSO is mainly useful for…

信息论 · 计算机科学 2022-02-02 Ayed M. Alrashdi , Abdullah E. Alrashdi , Amer Alghadhban , Mohamed A. H. Eleiwa

A cognitive radio system has the ability to observe and learn from the environment, adapt to the environmental conditions, and use the radio spectrum more efficiently. It allows secondary users (SUs) to use the primary users (PUs) channels…

信息论 · 计算机科学 2018-02-13 Fatima Salahdine

This work considers supervised contrastive learning for semantic segmentation. We apply contrastive learning to enhance the discriminative power of the multi-scale features extracted by semantic segmentation networks. Our key methodological…

计算机视觉与模式识别 · 计算机科学 2022-07-21 Theodoros Pissas , Claudio S. Ravasio , Lyndon Da Cruz , Christos Bergeles

In a realistic wireless environment, the multi-antenna channel usually exhibits spatially correlation fading. This is more emphasized when a large number of antennas is densely deployed, known as holographic massive MIMO (multiple-input…

信息论 · 计算机科学 2022-02-03 Özlem Tuğfe Demir , Emil Björnson , Luca Sanguinetti

Weakly supervised semantic segmentation (WSSS) has gained significant popularity since it relies only on weak labels such as image level annotations rather than pixel level annotations required by supervised semantic segmentation (SSS)…

计算机视觉与模式识别 · 计算机科学 2022-01-19 Kunhao Yuan , Gerald Schaefer , Yu-Kun Lai , Yifan Wang , Xiyao Liu , Lin Guan , Hui Fang

In this work, we address the near-field imaging under a wideband wireless communication network by exploiting both the near-field channel of a uniform linear array (ULA) and the image correlation in the frequency domain. We first formulate…

信息论 · 计算机科学 2025-10-20 Tianyu Yang , Kangda Zhi , Shuangyang Li , Giuseppe Caire

Reliable and energy-efficient wireless data transmission remains a major challenge in resource-constrained wireless neural recording tasks, where data compression is generally adopted to relax the burdens on the wireless data link.…

信息论 · 计算机科学 2016-02-02 Biao Sun , Wenfeng Zhao , Xinshan Zhu

Weakly supervised semantic segmentation (WSSS) employing weak forms of labels has been actively studied to alleviate the annotation cost of acquiring pixel-level labels. However, classifiers trained on biased datasets tend to exploit…

计算机视觉与模式识别 · 计算机科学 2024-05-29 JuneHyoung Kwon , Eunju Lee , Yunsung Cho , YoungBin Kim

This paper considers the channel estimation problem for massive multiple-input multiple-output (MIMO) systems that use one-bit analog-to-digital converters (ADCs). Previous channel estimation techniques for massive MIMO using one-bit ADCs…

信息论 · 计算机科学 2022-06-28 Hwanjin Kim , Junil Choi

Based on the maximum likelihood estimation principle, we derive a collaborative estimation framework that fuses several different estimators and yields a better estimate. Applying it to compressive sensing (CS), we propose a collaborative…

信息论 · 计算机科学 2018-04-20 Zhihui Zhu , Gang Li , Jiajun Ding , Qiuwei Li , Xiongxiong He

Efficient wideband spectrum sensing (WSS) is essential for managing spectrum scarcity in wireless communications. However, existing compressed sensing (CS)-based WSS methods require high sampling rates and power consumption, particularly…

信号处理 · 电气工程与系统科学 2024-11-08 Jian Yang , Zihang Song , Han Zhang , Yue Gao

This paper proposes two novel schemes of wideband compressive spectrum sensing (CSS) via block orthogonal matching pursuit (BOMP) algorithm, for achieving high sensing accuracy in real time. These schemes aim to reliably recover the…

信号处理 · 电气工程与系统科学 2023-04-14 Liyang Lu , Wenbo Xu , Yue Wang , Zhi Tian