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In this paper, user detection performance of a grant-free uplink transmission in a large scale antenna system is analyzed, in which a general grant-free multiple access is considered as the system model and Zadoff-Chu sequence is used for…

Information Theory · Computer Science 2019-07-11 Jonghyun Kim , Kyung Lin Ryu , Kwang Soon Kim

An active object recognition system has the advantage of being able to act in the environment to capture images that are more suited for training and that lead to better performance at test time. In this paper, we propose a deep…

Artificial Intelligence · Computer Science 2015-12-18 Mohsen Malmir , Karan Sikka , Deborah Forster , Ian Fasel , Javier R. Movellan , Garrison W. Cottrell

This study addresses the preamble detection problem in the Random Access procedure of LTE/5G networks by formulating it as a multi-class classification task and evaluating the effectiveness of machine learning techniques. A Support Vector…

Signal Processing · Electrical Eng. & Systems 2025-04-09 F. Ferenc , M. Szczachor

Activation functions play a decisive role in determining the capacity of Deep Neural Networks as they enable neural networks to capture inherent nonlinearities present in data fed to them. The prior research on activation functions…

Computer Vision and Pattern Recognition · Computer Science 2023-05-31 Jamshaid Ul Rahman , Faiza Makhdoom , Dianchen Lu

Vision-based human activity recognition has emerged as one of the essential research areas in video analytics domain. Over the last decade, numerous advanced deep learning algorithms have been introduced to recognize complex human actions…

Computer Vision and Pattern Recognition · Computer Science 2022-08-11 Hayat Ullah , Arslan Munir

Grant-free random access (GF-RA) is a promising access technique for massive machine-type communications (mMTC) in future wireless networks, particularly in the context of 5G and beyond (6G) systems. Within the context of GF-RA, this study…

Signal Processing · Electrical Eng. & Systems 2025-09-30 Ali Elkeshawy , Haifa Fares , Amor Nafkha

Correctly recognizing the behaviors of children with Autism Spectrum Disorder (ASD) is of vital importance for the diagnosis of Autism and timely early intervention. However, the observation and recording during the treatment from the…

Computer Vision and Pattern Recognition · Computer Science 2024-01-08 Andong Deng , Taojiannan Yang , Chen Chen , Qian Chen , Leslie Neely , Sakiko Oyama

In this letter, we propose a deep learning-aided multi-user detection (DeepMuD) in uplink non-orthogonal multiple access (NOMA) to empower the massive machine-type communication where an offline-trained Long Short-Term Memory (LSTM)-based…

Information Theory · Computer Science 2021-02-19 Ahmet Emir , Ferdi Kara , Hakan Kaya , Halim Yanikomeroglu

When dealing with deep neural network (DNN) applications on edge devices, continuously updating the model is important. Although updating a model with real incoming data is ideal, using all of them is not always feasible due to limits, such…

Machine Learning · Computer Science 2023-03-23 Yuya Senzaki , Christian Hamelain

We propose a novel Deep Active Learning (DeepAL) model-3D Wasserstein Discriminative UNet (WD-UNet) for reducing the annotation effort of medical 3D Computed Tomography (CT) segmentation. The proposed WD-UNet learns in a semi-supervised way…

Image and Video Processing · Electrical Eng. & Systems 2023-10-10 Shiyi Wang , Yang Nan , Simon Walsh , Guang Yang

Grant-free non-orthogonal multiple access has been regarded as a viable approach to accommodate access for a massive number of machine-type devices with small data packets. The sporadic activation of the devices creates a multiuser setup…

Signal Processing · Electrical Eng. & Systems 2023-05-15 Yanna Bai , Wei Chen , Bo Ai , Petar Popovski

Activity recognition has become a popular research branch in the field of pervasive computing in recent years. A large number of experiments can be obtained that activity sensor-based data's characteristic in activity recognition is…

Computer Vision and Pattern Recognition · Computer Science 2018-05-21 Li Xue , Si Xiandong , Nie Lanshun , Li Jiazhen , Ding Renjie , Zhan Dechen , Chu Dianhui

We present a reduced-dimension multiuser detector (RD-MUD) structure for synchronous systems that significantly decreases the number of required correlation branches at the receiver front-end, while still achieving performance similar to…

Information Theory · Computer Science 2015-03-19 Yao Xie , Yonina C. Eldar , Andrea Goldsmith

In this paper, a new detection algorithm is proposed for turbo coded Code Division Multiple Access (CDMA) signals in detect and forward cooperative channels. Use of user cooperation makes much improvement in the performance of CDMA systems.…

Signal Processing · Electrical Eng. & Systems 2018-03-13 Ebrahim Karami

We explore several reduced-dimension multiuser detection (RD-MUD) structures that significantly decrease the number of required correlation branches at the receiver front-end, while still achieving performance similar to that of the…

Information Theory · Computer Science 2011-10-17 Yao Xie , Yonina C. Eldar , Andrea Goldsmith

The existing action recognition methods are mainly based on clip-level classifiers such as two-stream CNNs or 3D CNNs, which are trained from the randomly selected clips and applied to densely sampled clips during testing. However, this…

Computer Vision and Pattern Recognition · Computer Science 2020-08-26 Yin-Dong Zheng , Zhaoyang Liu , Tong Lu , Limin Wang

Human Activity Recognition (HAR) is a challenging problem that needs advanced solutions than using handcrafted features to achieve a desirable performance. Deep learning has been proposed as a solution to obtain more accurate HAR systems…

Machine Learning · Computer Science 2020-07-08 Hamed Damirchi , Rooholla Khorrambakht , Hamid Taghirad

Observational studies are based on accurate assessment of human state. A behavior recognition system that models interlocutors' state in real-time can significantly aid the mental health domain. However, behavior recognition from speech…

Machine Learning · Computer Science 2016-06-15 Haoqi Li , Brian Baucom , Panayiotis Georgiou

Weakly supervised temporal action localization aims to detect and localize actions in untrimmed videos with only video-level labels during training. However, without frame-level annotations, it is challenging to achieve localization…

Computer Vision and Pattern Recognition · Computer Science 2021-04-30 Wang Luo , Tianzhu Zhang , Wenfei Yang , Jingen Liu , Tao Mei , Feng Wu , Yongdong Zhang

Day-ahead generation scheduling is typically conducted by solv-ing security-constrained unit commitment (SCUC) problem. However, with fast-growing of inverter-based resources, grid inertia has been dramatically reduced, compromising the…

Systems and Control · Electrical Eng. & Systems 2026-03-17 Mingjian Tuo , Fan Jiang , Xingpeng Li , Pascal Van Hentenryck