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User activity detection for massive Internet of things with an improved residual convolutional neural network
Author(s) -
Wu Xiaojiang,
Li Guobing,
Zhang Guomei
Publication year - 2021
Publication title -
transactions on emerging telecommunications technologies
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.366
H-Index - 47
ISSN - 2161-3915
DOI - 10.1002/ett.4182
Subject(s) - residual , convolutional neural network , computer science , overfitting , hyperparameter , artificial intelligence , block (permutation group theory) , regularization (linguistics) , deep learning , machine learning , data mining , the internet , artificial neural network , algorithm , geometry , mathematics , world wide web
Abstract Massive user activity detection is a challenging task for massive Internet of things (mIoT). In this paper, we propose a new deep neural network, named concentrated layers convolutional neural network (CLCNN), for user activity detection in mIoT. We firstly propose three basic rules in the design of residual network specifically for mIoT scenarios. Secondly, with the rules above we develop a new improved residual network block which includes integrated convolutional layers with activation functions, by which the residual convolutional network is constructed. Moreover, the regularization and its corresponding hyperparameter for the proposed network are also investigated against overfitting. Simulation results show that the proposed CLCNN network outperforms the existing deep learning algorithm and conventional compressive sensing solutions in user activity detection and corresponding channel estimation.