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Affine Frequency Division Multiplexing (AFDM) has attracted considerable attention for its robustness to Doppler effects. However, its high receiver-side computational complexity remains a major barrier to practical deployment. To address…

Signal Processing · Electrical Eng. & Systems 2025-08-19 Shuntian Tang , Zesong Fei , Xinyi Wang , Dongkai Zhou , Zhiqiang Wei , Christos Masouros

Orthogonal time frequency space (OTFS) modulation stands out as a promising waveform for sixth generation (6G) and beyond wireless communication systems, offering superior performance over conventional methods, particularly in high-mobility…

Signal Processing · Electrical Eng. & Systems 2026-01-21 Emin Akpinar , Emir Aslandogan , Burak Ahmet Ozden , Haci Ilhan , Erdogan Aydin

Non-linear detection schemes can substantially improve the achievable throughput and connectivity capabilities of uplink MU-MIMO systems that employ linear detection. However, the complexity requirements of existing non-linear soft…

Signal Processing · Electrical Eng. & Systems 2024-09-25 Chathura Jayawardena , Konstantinos Nikitopoulos

Small object detection remains a significant challenge due to feature degradation from downsampling, mutual occlusion in dense clusters, and complex background interference. To address these issues, this paper proposes FSDETR, a…

Computer Vision and Pattern Recognition · Computer Science 2026-04-17 Jianchao Huang , Fengming Zhang , Haibo Zhu , Tao Yan

Deploying deep neural networks on edge devices is often limited by the memory traffic and compute cost of dense linear operators. While quaternion neural networks improve parameter efficiency by coupling multiple channels through Hamilton…

Computer Vision and Pattern Recognition · Computer Science 2026-01-12 Vladimir Frants , Sos Agaian , Karen Panetta

Single-wavelength 400G coherent optical communications have become a critical solution to meet the explosive traffic demands. However, the single-carrier modulation using low-order modulation formats requires a broader wavelength division…

Networking and Internet Architecture · Computer Science 2025-08-26 Haide Wang , Ji Zhou , Yongcheng Li , Weiping Liu , Changyuan Yu , Xiangjun Xin , Liangchuan Li

Conventional super-resolution (SR) schemes make heavy use of convolutional neural networks (CNNs), which involve intensive multiply-accumulate (MAC) operations, and require specialized hardware such as graphics processing units. This…

Image and Video Processing · Electrical Eng. & Systems 2024-05-09 Binxiao Huang , Jason Chun Lok Li , Jie Ran , Boyu Li , Jiajun Zhou , Dahai Yu , Ngai Wong

Recently, synthetic aperture radar (SAR) image change detection has become an interesting yet challenging direction due to the presence of speckle noise. Although both traditional and modern learning-driven methods attempted to overcome…

Computer Vision and Pattern Recognition · Computer Science 2023-04-25 Gong Chen , Yanan Zhao , Yi Wang , Kim-Hui Yap

BERT based ranking models have achieved superior performance on various information retrieval tasks. However, the large number of parameters and complex self-attention operation come at a significant latency overhead. To remedy this, recent…

Information Retrieval · Computer Science 2021-10-06 Nachshon Cohen , Amit Portnoy , Besnik Fetahu , Amir Ingber

As radar systems will be equipped with thousands of antenna elements and wide bandwidth, the associated costs and power consumption become exceedingly high, and a potential solution is to adopt low-resolution quantization technology, which…

Signal Processing · Electrical Eng. & Systems 2024-08-06 Jiang Zhu , Hansheng Zhang , Ning Zhang , Jun Fang , Fengzhong Qu

In this paper, we propose a faster-than-Nyquist (FTN) non-orthogonal frequency-division multiplexing (NOFDM) scheme for visible light communications (VLC) where the multiplexing/demultiplexing employs the inverse fractional cosine transform…

Information Theory · Computer Science 2017-06-28 Ji Zhou , Yaojun Qiao , Tiantian Zhang , Jinlong Wei , Qixiang Cheng , Qi Wang , Zhanyu Yang , Aiying Yang , Yueming Lu

Wideband spectrum sensing (WSS) is an essential technology for cognitive radio. However, the sampling rate is still a bottleneck of WSS. Several sub-Nyquist sensing methods have been proposed. These technologies deteriorate in the low…

Signal Processing · Electrical Eng. & Systems 2018-02-13 Kai Cao , Peizhong Lu , Yan Zou , Lin Ling

In this paper, we consider communication over the bandwidth limited analog white Gaussian noise channel using non-orthogonal pulses. In particular, we consider non-orthogonal transmission by signaling samples at a rate higher than the…

Information Theory · Computer Science 2015-12-09 Ather Gattami , Emil Ringh , Johan Karlsson

We propose a low complexity graph-based linear minimum mean square error (LMMSE) equalizer which considers both the intersymbol interference (ISI) and the effect of non-white noise inherent in Faster-than-Nyquist (FTN) signaling. In order…

Information Theory · Computer Science 2016-11-17 Pinar Sen , Tugcan Aktas , A. Ozgur Yilmaz

The emergence of neural network capabilities invariably leads to a significant surge in computational demands due to expanding model sizes and increased computational complexity. To reduce model size and lower inference costs, recent…

Hardware Architecture · Computer Science 2025-01-22 Guoyu Li , Shengyu Ye , Chunyun Chen , Yang Wang , Fan Yang , Ting Cao , Cheng Liu , Mohamed M. Sabry , Mao Yang

We propose a novel algorithm, termed soft quasi-Newton (soft QN), for optimization in the presence of bounded noise. Traditional quasi-Newton algorithms are vulnerable to such perturbations. To develop a more robust quasi-Newton method, we…

Optimization and Control · Mathematics 2024-03-06 Erik Berglund , Jiaojiao Zhang , Mikael Johansson

Over-parameterized neural networks incur prohibitive memory and computational costs for resource-constrained deployment. The Strong Lottery Ticket (SLT) hypothesis suggests that randomly initialized networks contain sparse subnetworks…

Machine Learning · Computer Science 2026-03-11 Itamar Tsayag , Ofir Lindenbaum

Graph Neural Networks (GNNs) have shown superior performance in node classification. However, GNNs perform poorly in the Few-Shot Node Classification (FSNC) task that requires robust generalization to make accurate predictions for unseen…

Machine Learning · Computer Science 2024-10-23 Yihong Luo , Yuhan Chen , Siya Qiu , Yiwei Wang , Chen Zhang , Yan Zhou , Xiaochun Cao , Jing Tang

The labeling cost of large number of bounding boxes is one of the main challenges for training modern object detectors. To reduce the dependence on expensive bounding box annotations, we propose a new semi-supervised object detection…

Computer Vision and Pattern Recognition · Computer Science 2018-12-04 JIyang Gao , Jiang Wang , Shengyang Dai , Li-Jia Li , Ram Nevatia

In multiple-input multiple-output (MIMO) fading channels maximum likelihood (ML) detection is desirable to achieve high performance, but its complexity grows exponentially with the spectral efficiency. The current state of the art in MIMO…

Information Theory · Computer Science 2007-07-13 Massimiliano Siti , Michael P. Fitz