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13th International Conference on Information and Communication Technology Convergence, ICTC 2022

作者： Ha, Taeyun Lee, Donghyun Oh, Junsuk Jeon, Yongin Lee, chunghyun Cho, Sungrae Chung-Ang University Department of Computer Science and Engineering Seoul Korea Republic of

ISBN: (数字)9781665499392

ISBN: (纸本)9781665499392

It is characterized by a very high noise due to the environmental characteristics of the deep space. Additionally, there is noise affected by the surrounding planets or satellites. Solar noise occurs when the antenna looks directly at the sun, which is caused by the high-gain antenna used to increase SNR due to the nature of deep space communication. Noise of Moon-Earth Communication is noise generated by reflecting sunlight from the sun, which does not directly affect deep space communication, but can occur around the moon in relay cooperative communication via intermediate satellites during multimodal cooperative communication. There is noise from these various planets or satellites, which must be considered because they are not only affected by lunar exploration, but also by other planets in the case of deep space exploration. Therefore, reliable communication techniques reflecting the characteristics of deep space communication must be studied to solve problems arising from low SNR in the mentioned deep space environment. Based on various types of ACKs, the study of the Bundle Protocol's transport option, the Custom Transfer method, is conducted by using previous research on Free Space Optics (FSO) communication such as channel model and suitable coding. Through this, data loss in the DTN communication environment may be overcome. Furthermore, we propose a Deep Space Hybrid Automatic Rate Request (DS-HARQ) suitable for deep space communication environments to overcome the high error rate of DTNs. © 2022 IEEE.

关键词： Satellites

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BIC-LoRa: Bits in Chirp Shapes to Boost Throughput in LoRa 23

BIC-LoRa: Bits in Chirp Shapes to Boost Throughput in LoRa

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23rd ACM/IEEE International Conference on Information Processing in Sensor Networks, IPSN 2024

作者： Lee, Geonhee Park, Eunjeong Park, Mingyu Paek, Jeongyeup Bahk, Saewoong Seoul National University Department of Ece and Inmc Seoul08826 Korea Republic of Chung-Ang University Department of Computer Science and Engineering Seoul06974 Korea Republic of

ISBN: (纸本)9798350362015

LoRa is a low-power long-range radio technology for wide-area IoT connectivity with exceptional receiver sensitivity thanks to its chirp spread spectrum (CSS) modulation. However, insufficient data rate has always been an Achilles' heel of LoRa. This paper proposes a novel PHY-layer design, BIC-LoRa, that leverages non-linear chirp shapes as pictograph to enhance LoRa's data rate. It employs multiple non-linear chirps for modulation whose shapes encode additional bits to boost data rate while maintaining resilience to low SINR scenarios. To the best of our knowledge, this is the first attempt to enhance the data rate of LoRa by embedding bits in the chirp shapes. Furthermore, BIC-LoRa fully leverages the characteristics of non-linear chirps, allowing it to deal with packet collisions and increase network throughput. We implement BIC-LoRa in GNURadio and MATLAB, and compare its performance against CurveALOHA and standard LoRaWAN through real experiments on USRP B210 software-defined radios. Evaluation results demonstrate that BICLoRa achieves up to 29.4% improvement in data rate for a single link and 32% improvement in overall network throughput while retaining the low SNR robustness of LoRa in real-world scenarios. © 2024 IEEE.

关键词： MATLAB

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A hyperledger fabric-based EMR sharing mechanisms with proxy re-encryption and IPFS

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Cluster Computing 2024年第5期27卷 6953-6983页

作者： Huang, Der-Chen Liu, Ling-Chun Deng, Yong-Yuan Chen, Chin-Ling Zeng, Kuang-Wei Department of Computer Science and Engineering National Chung-Hsing University Taichung402 Taiwan School of Information Engineering Changchun Sci-Tech University Jilin Changchun130600 China Department of Computer Science and Information Engineering Chaoyang University of Technology Taichung41349 Taiwan

With the advent of the information age, data storage has not only developed from paper information systems to electronic information system storage, but has also extended to cloud database storage methods. To date, we can see the application of big data and cloud in various fields and levels, making induction, arrangement, transmission, and exchange of data easier and faster. The electronic and systematisation of patient medical records in the medical environment is an example. The use of electronic medical records can help improve the quality of medical care, reduce duplication of treatment, and reduce the waste of examination resources. It has many advantages, but also many risks. Medical institutions may abuse electronic medical data without the consent of patients, leading to the leakage of patient privacy data and causing serious social impact. Therefore, this study proposes a medical record exchange and sharing mechanism based on the Hyperledger blockchain architecture combined with proxy reencryption. When pharmacists need to obtain medical records for related research, patients can decide whether to share medical records, and hospitals can also revoke pharmacist access rights at any time to achieve more private, secure, and convenient sharing of medical records. The proposed scheme meets various blockchain security requirements and the BAN (Burrows–Abadi–Needham) logic proof model (Burrows–Abadi–Needham) is applied to assess the correctness of the proposed scheme. The proposed scheme performs well in terms of computational and communication costs. © The Author(s), under exclusive licence to Springer science+Business Media, LLC, part of Springer Nature 2024.

关键词： Blockchain

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A Survey on Copy-on-Write File Systems

A Survey on Copy-on-Write File Systems

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International Conference on Information and Communication Technology Convergence (ICTC)

作者： Manh Dat Tran Lan Anh Nguyen Hyung Tae Lee Jeongyeup Paek Sungrae Cho Yongseok Son Department of Computer Science and Engineering Chung-Ang University

ISBN: (数字)9798350364637

ISBN: (纸本)9798350364644

Crash consistency is crucial for ensuring the correctness of a storage system. One of the three classic file system consistency techniques is shadow paging (i.e., CoW). In CoW file system, instead of in-place modifying data on disk, the file system writes updates to newly-allocated blocks. It copies over old blocks and newly-allocated ones if it is necessary. After the updates have been confirmed as completed, the old ones can be released. CoW file systems, such as ZFS, BTRFS, BCacheFS, have still attracted attention in usage and development for years. This study firstly provides an overview of a CoW filesystem. Second, the comparison of CoW file systems in terms of provided features is provided. Besides, we compare CoW file systems to popular file systems applying the two other consistency techniques (i.e., journaling and log-structuring file systems) in terms of provided features.

关键词： Industries Surveys File systems Data integrity Memory Cows Propulsion Information and communication technology Reliability Convergence

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Energy Efficient Multi-UAV Communication Using DDPG 13

Energy Efficient Multi-UAV Communication Using DDPG

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13th International Conference on Information and Communication Technology Convergence, ICTC 2022

作者： Do, Quang Tuan Hua, Duc Thien Tran, Anh Tien Cho, Sungrae School of Computer Science and Engineering Chung-Ang University Seoul Korea Republic of

ISBN: (数字)9781665499392

ISBN: (纸本)9781665499392

Recently, unmanned aerial vehicles (UAVs) have been widely used in wireless communication. They can serve as aerial base stations for ground users (GUs). However, they cannot work for long because of the limited energy pool, and thus can only cover a limited area of services. In this paper, we investigate a wireless communication system enabled by multiple unmanned aerial vehicles (UAVs) for downlink communication, where energy consumption is taken into consideration. Our goal is to maximize the UAV's service time and downlink throughput by using a deep-reinforcement learning method called deep-deterministic policy gradient (DDPG). Simulation results are illustrated to demonstrate the performance of the proposed method. © 2022 IEEE.

关键词： Energy efficiency

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Learning-From-Mistakes Prompting for Indigenous Language Translation 7

Learning-From-Mistakes Prompting for Indigenous Language Tra...

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7th Workshop on Technologies for Machine Translation of Low-Resource Languages, LoResMT 2024 at ACL 2024

作者： Liao, You-Cheng Yu, Chen-Jui Lin, Chi-Yi Yun, He-Feng Wang, Yen-Hsiang Li, Hsiao-Min Fan, Yao-chung Department of Computer Science and Engineering National Chung Hsing University Taiwan

ISBN: (纸本)9798891761490

Using large language models, this paper presents techniques to improve extremely low-resourced indigenous language translations. Our approaches are grounded in the use of (1) the presence of a datastore consisting of a limited number of parallel translation examples, (2) the inherent capabilities of LLMs like GPT-3.5, and (3) a word-level translation dictionary. We harness the potential of LLMs and in-context learning techniques in such a setting for using LLM as universal translators for extremely low-resourced languages. Our methodology hinge on utilizing LLMs as language compilers for selected language pairs, hypothesizing that they could internalize syntactic structures to facilitate accurate translation. We introduce three techniques: KNN-Prompting with Retrieved Prompting Context, Chain-of-Thought Prompting, and Learning-from-Mistakes Prompting, with the last method addressing past errors. The evaluation results suggest that, even with limited corpora, LLMs, when paired with proper prompting, can effectively translate extremely low-resource languages. © 2024 Association for Computational Linguistics.

关键词： Computational linguistics

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A survey of Energy-saving routing protocol for Wireless Sensor Networks 13

A survey of Energy-saving routing protocol for Wireless Sens...

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13th International Conference on Information and Communication Technology Convergence, ICTC 2022

作者： Lee, Donghyun Oh, Junsuk Ha, Taeyun Lee, Jeonghwa Jeon, Yongin Cho, Sungrae School of Computer Science and Engineering Chung-Ang University Seoul Korea Republic of

ISBN: (数字)9781665499392

ISBN: (纸本)9781665499392

In a battery-operated wireless sensor network, the power used for wireless communication of each sensor is the factor that has the greatest influence on the overall lifespan of the wireless sensor network. In such a wireless sensor network, if the first sensor is discharged, the entire network becomes very unstable. Existing studies have been conducted on the assumption that the initial battery capacity of all sensors in a wireless sensor network is the same. However, depending on the situation or environment, the initial battery capacity of all sensors may not be the same. Therefore, in this paper, we investigate existing studies that are being studied to extend the time interval (referred to as the stabilization period) before the first sensor is discharged, which is critical for many applications where feedback from the sensor network should be reliable in a sensor network. © 2022 IEEE.

关键词： Wireless sensor networks

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Known Plaintext Attacks on the Omar and abed Homomorphic Encryption Scheme 13

Known Plaintext Attacks on the Omar and abed Homomorphic Enc...

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13th International Conference on Information and Communication Technology Convergence, ICTC 2022

作者： Choi, Seongbong Lee, Hyung Tae School of Computer Science and Engineering Chung-Ang University Seoul Korea Republic of

ISBN: (数字)9781665499392

ISBN: (纸本)9781665499392

In 2020, Omar and abed proposed a new noise-free fully homomorphic encryption scheme that allows arbitrary computations on encrypted data without decryption. However, they did not provide a sufficient security analysis of the proposed scheme and just stated that it is secure under the integer factorization assumption. In this paper, we present known plaintext attacks on their scheme and illustrate them with toy examples. Our attack algorithms are quite simple: They require several times of greatest common divisor (GCD) computations using only a few pair of message and ciphertext. © 2022 IEEE.

关键词： Toys

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Audio-driven Facial Animation: A Survey 13

Audio-driven Facial Animation: A Survey

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13th International Conference on Information and Communication Technology Convergence, ICTC 2022

作者： Hwang, Jewoong Park, Kyoungju School of Computer Science and Engineering Chung-Ang University Seoul Korea Republic of

ISBN: (数字)9781665499392

ISBN: (纸本)9781665499392

This paper provides a survey of the techniques for audio-driven 3D facial animation. This paper reviews linguistic-based animation and deep-learning-based animation. First, we present a brief historical review of technological evolution. Then we introduce each method. We discuss limitations and future directions at the end of the paper. © 2022 IEEE.

关键词： Surveys

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A Survey on Passive Beamforming using Statistical State Information in Intelligent Reflecting Surface Assisted Networks 13

A Survey on Passive Beamforming using Statistical State Info...

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13th International Conference on Information and Communication Technology Convergence, ICTC 2022

作者： Nguyen, The Vi Nguyen, Thi My Tuyen Hua, Duc Thien Tran, Nam Phuong Cho, Sungrae School of Computer Science and Engineering Chung-Ang University Seoul Korea Republic of

ISBN: (数字)9781665499392

ISBN: (纸本)9781665499392

Intelligent reflecting surface (IRS) is one of the promising technologies for next-generation communication networks, which is capable of customizing propagation environment and provides significant improvements in terms of energy and spectral efficiency. To realize these potential benefits of the IRS, an efficient IRS passive beamforming design should be considered. However, most recent studies have relied on instantaneous channel state information (I-CSI), which changes very fast and is not practical. Alternatively, using slow-varying statistical CSI (S-CSI) or their combination (hybrid CSI) is more attractive. This paper reviews some recent studies on S-CSI and hybrid CSI for IRS passive beamforming design. © 2022 IEEE.

关键词： Channel state information

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