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Modern large scale machine learning applications require stochastic optimization algorithms to be implemented on distributed computational architectures. A key bottleneck is the communication overhead for exchanging information, such as…

分布式、并行与集群计算 · 计算机科学 2019-10-25 Zijie Yan

In frequency division duplexing (FDD) massive multiple-input multiple-output (MIMO) systems, downlink channel state information (CSI) plays a crucial role in achieving high spectrum and energy efficiency. However, the CSI feedback overhead…

信息论 · 计算机科学 2026-01-13 Zijiu Yang , Qianqian Yang , Shunpu Tang , Tingting Yang , Zhiguo Shi

3D Gaussian Splatting (3DGS) enables high-fidelity real-time rendering, a key requirement for immersive applications. However, the extension of 3DGS to dynamic scenes remains limitations on the substantial data volume of dense Gaussians and…

计算机视觉与模式识别 · 计算机科学 2025-09-01 Jiayu Yang , Weijian Su , Songqian Zhang , Yuqi Han , Jinli Suo , Qiang Zhang

In frequency-division duplexing systems, the downlink channel state information (CSI) acquisition scheme leads to high training and feedback overheads. In this paper, we propose an uplink-aided downlink channel acquisition framework using…

信息论 · 计算机科学 2024-10-28 Jiajia Guo , Chao-Kai Wen , Shi Jin

Wideband channel estimation (CE) in high-mobility scenarios remains challenging because channel responses vary rapidly, while practical systems can allocate only sparse pilots to accommodate dense users. Fortunately, many high-mobility…

信息论 · 计算机科学 2026-05-18 Yumeng Zhang , Jiajia Guo , Chaozheng Wen , Chenghong Bian , Jun Zhang

Accurate and efficient channel state information (CSI) feedback is crucial for unlocking the substantial spectral efficiency gains of extremely large-scale MIMO (XL-MIMO) systems in future 6G networks. However, the combination of near-field…

信息论 · 计算机科学 2025-08-04 Zhenyu Liu , Yi Ma , Rahim Tafazolli

We consider downlink broadcast design for federated learning (FL) in a wireless network with imperfect channel state information (CSI). Aiming to reduce transmission latency, we propose a segmented analog broadcast (SegAB) scheme, where the…

信息论 · 计算机科学 2025-10-06 Chong Zhang , Ben Liang , Min Dong , Ali Afana , Yahia Ahmed

Bridging the gap between data-rich training regimes and observation-sparse deployment conditions remains a central challenge in spatiotemporal field reconstruction, particularly when target domains exhibit distributional shifts,…

机器学习 · 计算机科学 2026-01-30 Xingyue Zhang , Yuxuan Bao , Mars Liyao Gao , J. Nathan Kutz

Extremely large-scale multiple-input multiple-output (XL-MIMO) systems, operating in the near-field region due to their massive antenna arrays, are key enablers of next-generation wireless communications but face significant challenges in…

信号处理 · 电气工程与系统科学 2025-12-02 Tianqi Mao , Haiyang Li , Shufeng Tan , Pengyu Wang , Guangyao Liu , Ruiqi Liu , Leyi Zhang , Meng Hua , Dezhi Zheng , Zhaocheng Wang , Sheng Chen

Whole slide image (WSI) analysis has become increasingly important in the medical imaging community, enabling automated and objective diagnosis, prognosis, and therapeutic-response prediction. However, in clinical practice, the…

计算机视觉与模式识别 · 计算机科学 2023-08-28 Yanyan Huang , Weiqin Zhao , Shujun Wang , Yu Fu , Yuming Jiang , Lequan Yu

Massive MIMO (Multiple-Input Multiple-Output) is an advanced wireless communication technology, using a large number of antennas to improve the overall performance of the communication system in terms of capacity, spectral, and energy…

信息论 · 计算机科学 2025-01-06 Ferhat Ozgur Catak , Murat Kuzlu , Umit Cali

Channel state information (CSI) acquisition is a significant bottleneck in the design of Massive MIMO wireless systems, due to the length of the training sequences required to distinguish the antennas (in the downlink) and the users (for…

信息论 · 计算机科学 2016-09-12 Beatrice Tomasi , Alexis Decurninge , Maxime Guillaud

As 6G and beyond redefine connectivity, wireless networks become the foundation of critical operations, making resilience more essential than ever. With this shift, wireless systems cannot only take on vital services previously handled by…

信号处理 · 电气工程与系统科学 2026-04-28 Kevin Weinberger , Robert-Jeron Reifert , Aydin Sezgin , Mehdi Bennis

Traditional physical layer secure beamforming is achieved via precoding before signal transmission using channel state information (CSI). However, imperfect CSI will compromise the performance with imperfect beamforming and potential…

信号处理 · 电气工程与系统科学 2024-02-02 Tongyang Xu , Zhongxiang Wei , Tianhua Xu , Gan Zheng

Co-channel interference cancellation (CCI) is the process used to reduce interference from other signals using the same frequency channel, thereby enhancing the performance of wireless communication systems. An improvement to this approach…

信号处理 · 电气工程与系统科学 2024-11-20 Mostafa Naseri , Eli De Poorter , Ingrid Moerman , H. Vincent Poor , Adnan Shahid

In 6G wireless networks, multi-modal ML models can be leveraged to enable situation-aware network decisions in dynamic environments. However, trained ML models often fail to generalize under domain shifts when training and test data…

信号处理 · 电气工程与系统科学 2025-12-15 Minsu Kim , Walid Saad , Doru Calin

Holographic MIMO (HMIMO) is being increasingly recognized as a key enabling technology for 6G wireless systems through the deployment of an extremely large number of antennas within a compact space to fully exploit the potentials of the…

信号处理 · 电气工程与系统科学 2024-06-18 Wentao Yu , Hengtao He , Xianghao Yu , Shenghui Song , Jun Zhang , Ross Murch , Khaled B. Letaief

Large-scale foundation models for EEG signals offer a promising path to generalizable brain-computer interface (BCI) applications, but they often suffer from misalignment between pretraining objectives and downstream tasks, as well as…

机器学习 · 计算机科学 2025-10-03 Suli Wang , Yangshen Deng , Zhenghua Bao , Xinyu Zhan , Yiqun Duan

The development of deep learning-based models for the compression of hyperspectral images (HSIs) has recently attracted great attention in remote sensing due to the sharp growing of hyperspectral data archives. Most of the existing models…

计算机视觉与模式识别 · 计算机科学 2025-03-04 Martin Hermann Paul Fuchs , Akshara Preethy Byju , Alisa Walda , Behnood Rasti , Begüm Demir

Massive MIMO has been regarded as one of the key technologies for 5G wireless networks, as it can significantly improve both the spectral efficiency and energy efficiency. The availability of high-dimensional channel side information (CSI)…

信息论 · 计算机科学 2015-05-05 Juei-Chin Shen , Jun Zhang , Kwang-Cheng Chen , Khaled B. Letaief