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Security of the Cryptosystem GPT Based on Rank Codes and Term-rank Codes

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Security of the Cryptosystem GPT Based on Rank Codes and Ter...

engineering and Telecommunication (En&T), International Conference

作者： Du Hoan Nguyen Huu Loc Pham Linh Le Thi Trang Phystech School of Radio Engineering and Computer Science Moscow Institute of Physics and TechnologyMoscowRussia Information Technology Faculty Electric Power University Hanoi Vietnam

ISBN: (纸本)9781728183916

This paper investigates public key cryptosystems (PKC) in the rank metric and term-rank metric. For security analysis of cryptosystems, we introduce a GPT system. Recently, respective structural attacks this system were proposed by Over-beck. For GPT system, Overbeck's attack succeeds in polynomial time. We will discuss the new construction of Shiki system. This paper describes Overbeck's attack to the new Shiki system. Also, investigation of the possibility of using term-rank codes in public key cryptosystems.

关键词： Measurement Codes Linear codes Public key cryptography Cryptography

Recovering optimal precision in quantum sensing with time domain imperfections

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arXiv 2024年

作者： Li, Zi-Shen Long, Xinyue Yang, Xiaodong Lu, Dawei Yang, Yuxiang Quantum Information and Computation Initiative Department of Computer Science School of Computing and Data Science The University of Hong Kong Pokfulam Road Hong Kong Shenzhen518045 China Institute of Quantum Precision Measurement State Key Laboratory of Radio Frequency Heterogeneous Integration College of Physics and Optoelectronic Engineering Shenzhen University Shenzhen518060 China Shenzhen Institute for Quantum Science and Engineering Department of Physics Southern University of Science and Technology Shenzhen518055 China Guangdong Provincial Key Laboratory of Quantum Science and Engineering Southern University of Science and Technology Shenzhen518055 China

Quantum control plays a crucial role in enhancing precision scaling for quantum sensing. However, most existing protocols require perfect control, even though real-world devices inevitably have control imperfections. Here, we consider a fundamental setting of quantum sensing with time domain imperfections, where the duration of control pulses and the interrogation time are all subject to uncertainty. Under this scenario, we investigate the task of frequency estimation in the presence of a non-Markovian environment. We design a control strategy and prove that it outperforms any control-free strategies, recovering the optimal Heisenberg limit up to a small error term that is intrinsic to this model. We further demonstrate the advantage of our control strategy via experiments on a nuclear magnetic resonance (NMR) platform. Our finding confirms that the advantage of quantum control in quantum sensing persists even in the presence of imperfections. Copyright © 2024, The Authors. All rights reserved.

关键词： Frequency estimation

New Approach to Improving the Quality for Images Processed with Fractal Compression 22

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New Approach to Improving the Quality for Images Processed w...

22nd International Conference on Digital Signal Processing and its Applications, DSPA 2020

作者： Dvorkovich, Alexander V. Novinsky, Nikolay B. Diep, Do Ngoc Multimedia Systems and Technology Lab Moscow Institute of Physics and Technology National Research University Moscow Russia Phystech-School of Radio Engineering and Computer Science Moscow Institute of Physics and Technology National Research University Moscow Russia

ISBN: (纸本)9781728175287

a new method for improvement of images compressed using fractal compression method is under investigation. The experiments had show that the method is principally functional. The improvement of restored images (in terms of PSNR) is relatively small but the method is computationally simple. The effect of its usage is waiting to be greater for large images and complex images. © 2020 IEEE.

关键词： Image enhancement

Multi-year polarimetric monitoring of four CHIME-discovered repeating fast radio bursts with FAST

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Science China(Physics,Mechanics & Astronomy) 2025年

作者： Yi Feng Yong-Kun Zhang Jintao Xie Yuan-Pei Yang Yuanhong Qu Dengke Zhou Di Li Bing Zhang Weiwei Zhu Wenbin Lu Jiaying Xu Chenchen Miao Shiyan Tian Pei Wang Ju-Mei Yao Chen-Hui Niu Jiarui Niu Heng Xu Jinchen Jiang Dejiang Zhou Zenan Liu Chao-Wei Tsai Zigao Dai Xuefeng Wu Fayin Wang Jinlin Han Kejia Lee Renxin Xu Yongfeng Huang Yuanchuan Zou Jinhuang Cao Xianglei Chen Jianhua Fang Dongzi Li Ye Li Wanjin Lu Jiawei Luo Jintao Luo Rui Luo Fen Lyu Bojun Wang Weiyang Wang Qin Wu Mengyao Xue Di Xiao Wenfei Yu Jianping Yuan Chunfeng Zhang Junshuo Zhang Lei Zhang Songbo Zhang Rushuang Zhao Yuhao Zhu Institute for Frontiers in Astronomy and Astrophysics Beijing Normal University Departments of Astronomy and Theoretical Astrophysics Center University of California Berkeley Department of Astronomy School of Physics Huazhong University of Science and Technology Xinjiang Astronomical Observatory Chinese Academy of Sciences Institute of Astrophysics Central China Normal University School of Astronomy and Space Science Nanjing University University of Chinese Academy of Sciences Department of Astronomy School of Physical Sciences University of Science and Technology of China Department of Astronomy Peking University Kavli Institute for Astronomy and Astrophysics Peking University Research Center for Astronomical Computing Zhejiang Laboratory Key Laboratory of Modern Astronomy and Astrophysics (Nanjing University) Ministry of Education Department of Astrophysical Sciences Princeton University College of Physics Hebei Normal University National Time Service Center Chinese Academy of Sciences Department of Astronomy School of Physics and Materials Science Guangzhou University Institute of Astronomy and Astrophysics Anqing Normal University Shanghai Astronomical Observatory Chinese Academy of Sciences Guizhou Provincial Key Laboratory of Radio Astronomy and Data Processing Guizhou Normal University Institute for Astronomy School of Physics Zhejiang University National Astronomical Observatories Chinese Academy of Sciences School of Computer Science and Engineering Sichuan University of Science and Engineering South-Western Institute for Astronomy Research Yunnan University Purple Mountain Observatory Chinese Academy of Sciences Nevada Center for Astrophysics University of Nevada Department of Physics and Astronomy University of Nevada New Cornerstone Science Laboratory Department of Astronomy Tsinghua University

Fast radio bursts（FRBs） are bright,millisecond-duration radio emissions originating from cosmological *** this study,we report multi-year polarization measurements of four repeating FRBs initially discovered by the Canadian Hydrogen Intensity Mapping Experiment（CHIME）:FRBs 20190117 A,20190208 A,20190303 A,and 20190417 *** observed the four repeating FRBs with the Five-hundred-meter Aperture Spherical radio Telescope（FAST）,detecting a total of 66 *** bursts from FRB 20190417 A exhibit a circular polarization signal-to-noise ratio greater than 7,with the highest circular polarization fraction recorded at 35.7%.While the bursts from FRBs 20190208 A and 20190303 A are highly linearly polarized,those from FRBs 20190117 A and 20190417 A show depolarization due to multi-path propagation,with σRM=2.78±0.05 and 5.19±0.09 rad m-2,*** linear polarization distributions among five repeating FRBs—FRBs 20190208 A,20190303 A,20201124 A,20220912 A,and 20240114 A—are nearly identical but show distinct differences from those of nonrepeating *** 20190117 A,20190303 A,and 20190417 A exhibit substantial rotation measure（RM） variations between bursts,joining other repeating FRBs in this *** these findings with published results,64% of repeating FRBs show RM variations greater than 50 rad m-2,and 21% exhibit RM reversals.A significant proportion of repeating FRBs reside in a dynamic magneto-ionic *** structure function of RM variations shows a power-law index of γ～（0-0.8）,corresponding to a shallow power spectrum α=-（γ+2）～-（2.0-2.8） of turbulence,if the RM variations are attributed to *** suggests that the variations are dominated by small-scale RM density *** perform K-S tests to compare the RMs of repeating and non-repeating FRBs,which reveal a marginal dichotomy in the distribution of their *** caution that the observed dichotomy may be due to the small sample size and selection biases.

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Analysis of Correlation between Cellular, TV and radio technology to Human Development in Indonesia 7

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Analysis of Correlation between Cellular, TV and Radio techn...

7th International Conference on ICT for Smart Society, ICISS 2020

作者： Hamid, Zulhaidir Lee, Dohoon Ministry of Communication and Information Technology Indonesia Loka Monitor Spektrum Frekuensi Radio Gorontalo Gorontalo Indonesia Pusan National University School of Computer Science and Engineering Busan Korea Republic of

ISBN: (纸本)9781665404228

The human development was represented with the human development index and the availability of telecommunication service extracted from spectrum frequency monitoring all around Indonesia. In this paper, we find out the correlation between the availability of radio spectrum-related ICTs telecommunication service in the form of mobile cellular, TV broadcast, and radio broadcast with human development by using city-regency level data. We knew that telecommunication service is statistically significant and positively correlated to human development. In particular, mobile cellular service has a higher positive correlation with human development comparing to TV broadcast service, while radio broadcast service does not correlate with human development. We also suggest that policies should give more priorities to the mobile cellular technology for using spectrum frequency as this technology has the highest correlation with human development in Indonesia. © 2020 IEEE.

关键词： radio broadcasting

Deep Learning-Based Signal Detection for Dual-Mode Index Modulation 3D-OFDM

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arXiv 2022年

作者： Hoang, Dang Y. Nguyen, Tien-Hoa Ngo, Vu-Duc Tan Nguyen, Trung Luong, Nguyen Cong Van Luong, Thien The School of Electrical and Electronics Engineering Hanoi University of Science and Technology Hanoi Viet Nam The Faculty of Radio-Electronics Le Quy Don Technical University Hanoi11355 Viet Nam The Faculty of Computer Science Phenikaa University Hanoi12116 Viet Nam

In this paper, we propose a deep learning-based signal detector called DuaIM-3DNet for dual-mode index modulation-based three-dimensional (3D) orthogonal frequency division multiplexing (DM-IM-3D-OFDM). Herein, DM-IM-3DOFDM is a subcarrier index modulation scheme which conveys data bits via both dual-mode 3D constellation symbols and indices of active subcarriers. Thus, this scheme obtains better error performance than the existing IM schemes when using the conventional maximum likelihood (ML) detector, which, however, suffers from high computational complexity, especially when the system parameters increase. In order to address this fundamental issue, we propose the usage of a deep neural network (DNN) at the receiver to jointly and reliably detect both symbols and index bits of DM-IM-3D-OFDM under Rayleigh fading channels in a data-driven manner. Simulation results demonstrate that our proposed DNN detector achieves near-optimal performance at significantly lower runtime complexity compared to the ML detector. © 2022, CC BY.

关键词： Deep neural networks

Deep Neural Network-Based Detector for Single-Carrier Index Modulation NOMA

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arXiv 2022年

作者： Gian, Toan Ngo, Vu-Duc Nguyen, Tien-Hoa Nguyen, Trung Tan Van Luong, Thien The School of Electrical and Electronics Engineering Hanoi University of Science and Technology Hanoi Viet Nam The Faculty of Radio-Electronics Le Quy Don Technical University Hanoi11355 Viet Nam The Faculty of Computer Science Phenikaa University Hanoi12116 Viet Nam

In this paper, a deep neural network (DNN)-based detector for an uplink single-carrier index modulation non-orthogonal multiple access (SC-IM-NOMA) system is proposed, where SC-IM-NOMA allows users to use the same set of subcarriers for transmitting their data modulated by the sub-carrier index modulation technique. More particularly, users of SC-IM-NOMA simultaneously transmit their SC-IM data at different power levels which are then exploited by their receivers to perform successive interference cancellation (SIC) multi-user detection. The existing detectors designed for SC-IM-NOMA, such as the joint maximum-likelihood (JML) detector and the maximum likelihood SIC-based (ML-SIC) detector, suffer from high computational complexity. To address this issue, we propose a DNN-based detector whose structure relies on the model-based SIC for jointly detecting both M-ary symbols and index bits of all users after trained with sufficient simulated data. The simulation results demonstrate that the proposed DNN-based detector attains near-optimal error performance and significantly reduced runtime complexity in comparison with the existing hand-crafted detectors. © 2022, CC BY.

关键词： Bit error rate

Exploring the Dynamical Nature and radio Halo Emission of Abell 384: A Combined radio, X-ray and Optical Study

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arXiv 2024年

作者： Chatterjee, Swarna Pillay, Denisha Datta, Abhirup Raja, Ramij Knowles, Kenda Rahaman, Majidul Sikhosana, S.P. Department of Astronomy Astrophysics and Space Engineering Indian Institute of Technology Indore M.P. Indore India Centre for Radio Astronomy Techniques and Technologies Department of Physics and Electronics Rhodes University Makhanda6139 South Africa Astrophysics Research Centre University of KwaZulu-Natal South Africa South African Radio Astronomy Observatory Liesbeek House Settlers Way Mowbray Cape Town7705 South Africa Institute of Astronomy National Tsing Hua University Hsinchu300044 Taiwan School of Mathematics Statistics and Computer Science University of KwaZulu-Natal South Africa

Multiwavelength studies of galaxy clusters are crucial for understanding the complex interconnection of the thermal and non-thermal constituents of these massive structures and uncovering the physical processes involved in their formation and evolution. Here, we report a multiwavelength assessment of the galaxy cluster A384, which was previously reported to host a radio halo with a 660 kpc size at MeerKAT 1.28 GHz. The halo is slightly offset from the cluster centre. Our uGMRT observation reveals that the halo extends up to 690 kpc at 407 MHz with a nonuniform spectral index α4071284MHzMHz distribution varying from flat (-0.5) to steep (-1.3) values. In addition, we use legacy GMRT 608 MHz, XMM-Newton X-ray, and the Dark Energy Survey optical observations to obtain an extensive understanding of the dynamical nature of the galaxy cluster. The X-ray surface brightness concentration parameter (CSB = 0.16) and centroid shift (w = 0.057) reveal an ongoing dynamical disturbance in the cluster. This is also supported by the elongated 2-D optical galaxy density distribution map of the cluster. The obtained centre shift between optical and X-ray peaks and the asymmetry parameter from optical analysis further supports the dynamical disturbance in the cluster. The radio and X-ray surface brightness follows a sub-linear correlation. Our observations suggest that the cluster is currently in a merging state where particle re-acceleration in the turbulent ICM resulted in the radio halo emission. Copyright © 2024, The Authors. All rights reserved.

关键词： Dark energy

Improving the Deaf and Hard of Hearing Internet Accessibility: JSL, Text-into-Sign Language Translator for Arabic 6th

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Improving the Deaf and Hard of Hearing Internet Accessibilit...

6th International Conference on Advanced Machine Learning Technologies and Applications, AMLTA 2021

作者： Al-Sarayrah, Walaa Al-Aiad, Ahmad Habes, Mohammed Elareshi, Mokhtar Salloum, Said A. Faculty of Computer Science Jordan University of Science and Technology Irbid Jordan Faculty of Mass Communication - Department of Radio and Television Yarmouk University Irbid Jordan College of Communication and Media Al Ain University Al Ain United Arab Emirates School of Science Engineering and Environment University of Salford Salford United Kingdom Machine Learning and NLP Research Group Department of Computer Science University of Sharjah Sharjah United Arab Emirates

ISBN: (纸本)9783030697167

Our society is more dependent on ICT regardless of our abilities. However, some webpages cannot be accessed by D/HoH people, especially when they lack education skills. Technological experts have offered several solutions over the years e.g., fixed content given to D/HoH users, or videos using SL, which affects the presentation. As a suggested solution, the Jordanian Sign Language browser (JSL) was developed. This allows D/HoH users to choose any word and translate it into SL using videos with translated words appearing on the screen on request without disturbing the website presentation. The JSL acceptance was measured using the usability questionnaire (SUMI). The model was drawn from 100 Jordanian D/HoH users to measure their satisfaction and acceptance and test the following factors: Efficiency, Effect, Helpfulness, and Learnability. The findings revealed that the proposed model was reliable and reinforced the need for including ICT in D/HoH institutions. It is anticipated that it will help online D/HoH people in enhancing their social and educational skills. © 2021, The Author(s), under exclusive license to Springer Nature Switzerland AG.

关键词： Websites