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Distribution -- Concurrency -- Verification -- Networking -- Self-stabilization -- Security -- Graph -- Middleware.

Due to its irregular structure, the efficiency of the pelletized fibrous filter can be improved if the target substance is line-shaped. Thus, this study was conducted to examine the applications of the pelletized fibrous filter for biological sewage water with line-shaped particles. Towards this end, the pelletized fibrous filter was applied to advanced treatments in which the particles in the sewage water in the supernatant using solid-liquid separation from the final-settling reservoir was filtered with pelletized fibrous filters. To determine the process efficiency of the filter device, a multiparameter water quality analyzer and a data transmission system were established, which showed the efficient process even at a large distance, as well as the good operational status of the filter device. The pilot plant operation results showed that the concentration of TSS in the influent at 20-75 mg/L was reduced to 0.4-10 mg/L in the processed water. The average processing efficiency was 94.9% between 71.4 and 97.9%, and particularly, that of the suspended solids was very high. The results also showed that 27.2% CODMn, 22.5% T-N, and 30.0% T-P were removed.

In the study of the frequency domain crosstalk for twisted pair, the traditional alternating inversion model is often built under the ideal condition of lossless and uniform media, ignoring the length of the twisted section. This paper focuses on the impact of these non-ideal conditions on crosstalk, applying the cascaded transmission line theory of Paul and McKnight to predict near-end crosstalk (NEXT) of two pairs of twisted wire pair (TWP) which are placed above a perfectly conducting ground or in a cylindrical ideal conductive shell. This paper put forward the non-uniform-media layered connection method (NLCM) to solve the parasitic parameter matrix, taking two layers as an example. Based on the deduced chain parameter matrix and boundary conditions, the exact crosstalk solution is obtained. All theories in this paper are of great significance to the EMC design of high-speed data transmission systems, providing the theoretical support for predicting NEXT within each device or system.

With the development and application of the communication system based on Beidou short message, how to ensure the accuracy of the transmission information is one of the research hotspots in recent years. This paper introduces several existing error correction technologies for audio and video communication information transmission, which can be summarized into three categories: automatic repeat request technology, forward error correction technology and hybrid error correction technology, and analyzes the design principle, practical application performance, advantages and disadvantages of each technology. This paper provides reference for the design of error correction part of audio and video information transmission system based on short message communication.

The paper describes the problems of assessing the quality of intelligent transport systems related to organizational and technical systems based on the system analysis of information technologies. It provides the theoretical basis for describing the quality assessment process of intelligent transport systems. The paper also justifies the method of quality assessment of complex systems, which include intelligent transport systems. It is shown that the modern system of intelligent systems should not only be effective, but also not violate the required operation mode. The characteristic evaluating the effect of the target functioning has the properties of measurability, completeness and reliability. The intelligent transport systems may include systems that in the process of control ensure the achievement of set targets with the necessary quality of target functioning in a counteracting environment. In order for the system to function correctly, it is necessary to agree on a set of targets and a set of conditions, i.e. to implement an integrated approach to the functioning of the system as a whole. With an integrated approach it is necessary to agree on all the targets set for the system, as well as all the conditions under which it will operate.

The object of research is the military radio communication system. Effective operation of routing protocols is possible only if there is reliable information about the network topology for network nodes, given that the mobility of individual nodes is insignificant in special purpose wireless networks. Because nodes in the network demonstrate the mobility property of the node groups. This paper solves the problem of the analysis (decomposition) of methods of protocols efficiency increase of dynamic routing in telecommunication networks with a possibility to self-organization. In the course of the research, the authors used the main provisions of the queuing theory, the theory of automation, the theory of complex technical systems and general scientific methods of cognition, namely analysis and synthesis. This research analyzes various methods to increase the efficiency of dynamic routing protocols. Energy efficiency methods focus on three main components in energy management: battery management, transmission energy management and system energy management methods. Reliable multicast has become indispensable for the successful deployment of special purpose wireless networks, such as in tactical military operations and emergency operations. The results of the research will be useful in: –development of new routing algorithms; –substantiation of recommendations for improving the efficiency of the route selection process in networks with the possibility of self-organization; –analysis of the electronic situation during hostilities (operations); –while creating promising technologies to increase the efficiency of mobile radio networks. Areas of further research will focus on the development of a methodology for the operational management of interference protection of intelligent military radio communication systems.

This paper is a research on the possibility of forming an ensemble of orthogonal signals, which provides an approach to the maximum possible values of the transmission rate of, messages over Gaussian communication channels and its energy efficiency without the use of noise-resistant coding. The object of a study was a three-dimensional surface-spherical ensemble of eighteen signal points. A spatial signal diagram, idealized waveforms of summary signal and partial signals at subcarrier frequencies were examined to find out the possible problems that stand on the way of implementation of hyperphase modulation technology. An assessment of the prospects for the use of hyperphase modulation in typical data transmission systems, including satellite based are outlined in this paper.

Special Section on Parallel, Distributed, and Reconfigurable Computing, and Networking Graphics processing units (GPUs) are highly efficient architectures for parallel stencil code; however, the small device (i.e., GPU) memory capacity (several tens of GBs) necessitates the use of out-of-core computation to process excess data. Great programming effort is needed to manually implement efficient out-of-core stencil code. To relieve such programming burdens, directive-based frameworks emerged, such as the pipelined accelerator (PACC); however, they usually lack specific optimizations to reduce data transfer. In this paper, we extend PACC with two data-centric optimizations to address data transfer problems. The first is a direct-mapping scheme that eliminates host (i.e., CPU) buffers, which intermediate between the original data and device buffers. The second is a region-sharing scheme that significantly reduces host-to-device data transfer. The extended PACC was applied to an acoustic wave propagator, automatically extending the length of original serial code 2.3-fold to obtain the out-of-core code. Experimental results revealed that on a Tesla V100 GPU, the generated code ran 41.0, 22.1, and 3.6 times as fast as implementations based on Open Multi-Processing (OpenMP), Unified Memory, and the previous PACC, respectively. The generated code also demonstrated usefulness with small datasets that fit in the device capacity, running 1.3 times as fast as an in-core implementation. This study was supported in part by the Japan Society for the Promotion of Science KAKENHI Grant Numbers JP15H01687, JP16H02801, and JP20K21794.

The relative change of in-situ stress is an inevitable outcome of differential movement among the crust plates. Conversely, changes of in-situ stress can also lead to deformation and instability of crustal rock mass, trigger activity of faults, and induce earthquakes. Hence, monitoring real-time change of in-situ stress is of great significance. Piezomagnetic in-situ stress monitoring has good and longtime applications in large engineering constructions and geoscience study fields in China. In this paper, the new piezomagnetic in-situ stress monitoring system is introduced and it not only has overall improvements in measuring cell's structure and property, stressing and orienting way, but also enhances integration and intelligence of control and data transmission system, in general, which greatly promotes installing efficiency of measuring probe and quality of monitoring data. This paper also discusses the responses of new piezomagnetic system in large earthquake events of in-situ stress monitoring station at Qiaoqi of Baoxing and Wenxian of Gansu. The monitoring data reflect adjustments and changes of tectonic stress field at the southwestern segment of and the northern area near the Longmenshan fault zone, which shows that the new system has a good performance and application prospect in the geoscience field. Data of the Qiaoqi stress-monitoring station manifest that the Lushan Earthquake did not release stress of the southwestern segment of the Longmenshan fault zone adequately and there still probably exists seismic risk in this region in the future. Combined with absolute in-situ stress measurement, carrying out long-term in-situ stress monitoring in typical tectonic position of important regions is of great importance for researchers to assess and study regional crust stability.

A distributed ultrasonic method for measuring the liquid film thickness of vertical multiphase slug flow and churn flow widely existed in industrial production is proposed in this paper. First, according to the proportional relationship between transit time of ultrasonic echo and liquid film thickness, we use the twin-crystal ultrasonic probe to measure the local thickness of liquid film. In view of the non-uniform circumferential distribution of the liquid film, three ultrasonic probes are installed on the same pipe section to measure the circumferential distribution of liquid film thickness. Then, a high-speed data acquisition system suitable for multi-channel and a data transmission system based on gigabit network are designed. The experiments of gas-liquid two-phase flow and oil-gas-water three-phase are carried out in a vertical pipe with a diameter of 20 mm. The fluctuation of local liquid film thickness has been measured by the distributed ultrasonic sensor, and the average thickness of liquid film of slug flow and churn flow under different flow conditions is obtained. The result indicates that the average liquid film thickness of slug flow and churn flow gradually thickens with the increase of liquid superficial velocity, and the distributed ultrasonic sensor can accurately measure the change of film thickness.

This paper considers an approach to constructing analytical chaotic sequences with statistical and dynamic characteristics that are close to the white noise characteristics. The notion of stealthiness and its measure were introduced for these sequences. Attractors of constructed sequences and their cross-correlation functions were studied. The results obtained in this paper can be used for enhancing the stealthiness of radio data transmission systems.

The object of research is the military radio communication system. Effective operation of routing protocols is possible only if there is reliable information about the network topology for network nodes, given that the mobility of individual nodes is insignificant in special purpose wireless networks. Because nodes in the network demonstrate the mobility property of the node groups. This paper solves the problem of the analysis (decomposition) of methods of protocols efficiency increase of dynamic routing in telecommunication networks with a possibility to self-organization. In the course of the research, the authors used the main provisions of the queuing theory, the theory of automation, the theory of complex technical systems and general scientific methods of cognition, namely analysis and synthesis. This research analyzes various methods to increase the efficiency of dynamic routing protocols. Energy efficiency methods focus on three main components in energy management: battery management, transmission energy management and system energy management methods. Reliable multicast has become indispensable for the successful deployment of special purpose wireless networks, such as in tactical military operations and emergency operations. The results of the research will be useful in: – development of new routing algorithms; – substantiation of recommendations for improving the efficiency of the route selection process in networks with the possibility of self-organization; – analysis of the electronic situation during hostilities (operations); – while creating promising technologies to increase the efficiency of mobile radio networks. Areas of further research will focus on the development of a methodology for the operational management of interference protection of intelligent military radio communication systems., Объектом исследования является система военной радиосвязи. Эффективная работа протоколов маршрутизации возможна только при наличии достоверной информации о топологии сети для узлов сети, учитывая, что мобильность отдельных узлов имеет незначительное значение в беспроводных сетях специального назначения. Поскольку узлы в сети демонстрируют свойство подвижности группы узлов. В данной работе решена задача анализа (декомпозиции) методов повышения эффективности протоколов динамической маршрутизации в телекоммуникационных сетях с возможностью к самоорганизации. В ходе проведенного исследования авторами работы были использованы основные положения теории массового обслуживания, теории автоматизации, теории сложных технических систем, а также общенаучные методы познания, а именно анализа и синтеза. В этом исследовании проанализированы различные методы повышения эффективности протоколов динамической маршрутизации. Методы повышения энергетической эффективности сосредоточиваются на трех основных составляющих в управлении энергией: управление аккумулятором, управление энергией передачи и методы управления энергией системы. Надежная многоадресная передача стала незаменимой для успешного развертывания беспроводных сетей специального назначения, таких как в тактических военных операциях и чрезвычайных операциях. Результаты исследования будут полезны при: –разработке новых алгоритмов маршрутизации; –обосновании рекомендаций по повышению эффективности процесса выбора маршрута в сетях с возможностью к самоорганизации; –анализе радиоэлектронной обстановки в ходе ведения боевых действий (операций); –при создании перспективных технологий повышения эффективности мобильных радиосетей. Направления дальнейших исследований будут направлены на разработку методологии оперативного управления средствами помехозащиты интеллектуальных систем военной радиосвязи., Об'єктом дослідження є система військового радіозв’язку. Ефективна робота протоколів маршрутизації можлива лише за умови наявності достовірної інформації про топологію мережі для вузлів мережі, враховуючи, що мобільність окремих вузлів має незначне значення в бездротових мережах спеціального призначення. Оскільки вузли в мережі демонструють властивість рухливості групи вузлів. У даній роботі вирішено завдання аналізу (декомпозиції) методів підвищення ефективності протоколів динамічної маршрутизації в телекомунікаційних мережах з можливістю до самоорганізації. В ході проведеного дослідження авторами роботи були використані основні положення теорії масового обслуговування, теорії автоматизації, теорії складних технічних систем, а також загальнонаукові методи пізнання, а саме аналізу та синтезу. У цьому дослідженні проаналізовані різні методи підвищення ефективності протоколів динамічної маршрутизації. Методи підвищення енергетичної ефективності зосереджуються на трьох основних складових в управлінні енергією: управління акумулятором, управління енергією передачі та методи управління енергією системи. Надійна багатоадресна передача стала незамінною для успішного розгортання бездротових мереж спеціального призначення, таких як у тактичних військових операціях та надзвичайних операціях. Результати дослідження стануть у нагоді при: –розробці нових алгоритмів маршрутизації; –обґрунтуванні рекомендацій щодо підвищення ефективності процесу вибору маршруту в мережах з можливістю до самоорганізації; –аналізі радіоелектронної обстановки в ході ведення бойових дій (операцій); –при створенні перспективних технологій підвищення ефективності мобільних радіомереж. Напрямки подальших досліджень будуть спрямовані на розробку методології оперативного управління засобами завадозахисту інтелектуальних систем військового радіозв’язку.

In recent years, for the development or application of vortex beams and spatial structured optical fields, the detection of orbital angular momentum (OAM) of vortex beams has become an important topic. In this paper, based on the holographic diffraction grating method of the spatial light modulator (SLM), through a designed diffraction grating whose intensity distribution and diffraction angle are adjustable, the OAM of the single-mode vortex beam is detected. We first started with a self-designed 1D holographic diffraction grating, verified our ideas, and then designed a 2D holographic diffraction grating and successfully detected the OAM of the single-mode vortex beam. The theory and experiment are in great agreement. Our method is useful for the design of SLM-based holographic diffraction gratings and has reference value for OAM detection and data transmission systems based on vortex beams.

In this research, a wireless remote environmental monitoring system is presented, which is designed for government to monitor the parameters of environment in factories. The system could collect data related to environment and transfer them by GPRS or Ethernet if condition is allowed. This paper elaborates the system by the order of “analyze-design-realize”. The embedded system is introduced. After some discussion, we chose ARMS based S3C2410 as microprocessor, Linux as the operation system. Then overall design solution and framework of the system is proposed. Finally, this paper gives the test experiment in the factories. The experiment results demonstrate the feasibility and stability of the system.

Retracted paper: Galvanic coupling method has been observed to be the best method for data transmission in intra-body communication, which is proposed by Zimmerman in 1995. With the increasing transmission requirements and the development of optical fiber communication, a high speed data transmission system is required and it is possible to design an apparatus to realize the electro optic conversion. In this paper, the characteristics of the intra-body communication system are introduced. Principles and structures of the electro-optic modulation methods for intra-body communication are reviewed. Internal and external modulation methods are introduced and discussed. A system of the electro-optic and acousto-optic modulation are recommended for the intra-body communication system and discussed.

This paper focuses on the advanced Forward Error Correction (FEC) based on Low-Density Parity-Check (LDPC) codes for remote control and data transmission of Aeronautic and Astronautic Vehicles (AAV). It shows that the nontransparent LDPC codes with odd row weights are able to resist phase inversion with a small computational overhead. To the best of our knowledge, it is the first time to use FEC to resist phase inversion. Then, a high hardware-efficient FEC design for AAV, which is capable of correcting random errors as well as phase inversion, is proposed based on circulant decomposition with circulant size of 2s. Such a (4096, 2048) LDPC code has been adopted in a data transmission system due to its excellent error performance and hardware efficiency. Keywords: Circulant decomposition, FEC, High efficiency, LDPC, Nontransparent

In this paper, we propose an ambient backscatter communication-based smart 5G IoT network. The network consists of two parts, namely a real-time data transmission system based on ambient backscatter communication and a real-time big data analysis system based on the combination of shallow neural networks and deep neural networks. The real-time data transmission system based on ambient backscatter communication can extend the standby time of data collection equipment, reduce the size of the equipment, and increase the comfort of wearing. The real-time big data analysis system combining the shallow neural network and the deep neural network can greatly reduce the pressure caused by the frequent deep neural network calculations of the MEC and greatly reduce the energy consumed by the MEC for remote real-time monitoring.

This paper proposes a 5-Gb/s four-level pulse amplitude modulation (PAM4) transmitter using compensation circuit in data transmission systems. In PAM4 systems, the signal amplitude requires smaller rising and falling times. To achieve this, we adopted an analog feed forward equalizing (FFE) for the compensation in PAM4 transmitter. To confirm the advantage of the proposed technique, we fabricated a 5-Gb/s PAM4 transmitter IC in an 180-nm CMOS process for this work. The measured rising and falling times were 18% and 13% smaller than those without FFE, respectively.

With the continuous development of space system, the tracking ability, data transmission ability, and communication ability of TT & C network are required to be higher. This paper studies the development of foreign space TT & C and data transmission system, analyzes its development process and characteristics, summarizes the future development trend, and combs the key technologies of space TT & C and data transmission system. On this basis, analyzing the needs of China’s future space system to TT & C and data transmission system and presenting some suggestions.

The paper considers the problem associated with the detection of threats associated with the leakage of information through existing channels that have a different physical principle at the objects of information activities. A mathematical model is proposed, which is based on the theory of fractal analysis and which identifies the channel through which there is an unauthorized leakage of information on the object of information activity. Based on experimental data obtained using different channels of unauthorized removal of information at the object of information activities, a scale is presented, which determines the intervals of the fractal dimension, which allows to identify the channel through which the intention to leak information at the object information activities.

Cellular networks play a very important role in nowadays paradigm which goal is to establish connectivity all around the world. Low power wide area networks (LPWAN) seem to fit well within low-cost devices, which constitute a great part of the electronics market. In this context, the narrowband internet of things (NB-IoT) protocol specified by the 3GPP is consolidating as one of the most adopted technologies in the field of LPWAN, together with LoRaWAN. With the goal of reaching global coverage, the NB-IoT protocol, which was mainly designed for terrestrial cellular networks, is now being extended to be able to work also on satellite networks. The support of satellite access is seen as the enabler of truly massive machine-type communications (mMTC) into areas that cellular connectivity is limited or inexistent (remote areas, air and sea communications). This thesis provides a performance assessment of the NB-IoT protocol under different satellite link conditions and transmission modes. The assessment is conducted using the MATLAB LTE Toolbox. Las redes móviles tienen un papel muy importante en la actualidad, puesto que tienen como objetivo establecer conectividad en todo el mundo. Las redes de bajo consumo y largo alcance (LPWAN) parecen encajar bien en un entorno donde los dispositivos de bajo coste constituyen una gran parte del mercado de la electrónica. En este contexto, el protocolo NB-IoT especificado por el 3GPP se consolida como una de las tecnologías más adoptadas en el contexto de LPWAN, junto con LoRaWAN. Con el objetivo de conseguir una cobertura global, el protocolo NB-IoT, que fue diseñado principalmente para redes de telefonía terrestre, ahora se está ampliando para poder trabajar también en redes de satélite. El acceso por satélite es visto como la puerta hacia las comunicaciones de tipos máquina masiva (mMTC) en áreas donde la conectividad celular es limitada o inexistente (áreas remotas, comunicaciones aéreas y marítimas). Esta tesis proporciona una evaluación del rendimiento del protocolo NB-IoT bajo diferentes condiciones de enlace por satélite y modos de transmisión. La evaluación se realiza utilizando la caja de herramientas MATLAB LTE. Les xarxes mòbils tenen un paper molt important en l'actualitat, ja que tenen com a objectiu establir connectivitat a tot el món. Les xarxes de baix consum i llarg abast (LPWAN) semblen encaixar bé en un entorn on els dispositius de baix cost constitueixen una gran part del mercat de l'electrònica. En aquest context, el protocol NB-IoT especificat pel 3GPP es consolida com una de les tecnologies més adoptades en el context de LPWAN, juntament amb LoRaWAN. Amb l'objectiu d'aconseguir una cobertura global, el protocol NB-IoT, que va ser dissenyat principalment per a xarxes de telefonia terrestre, ara s'està ampliant per poder treballar també en xarxes de satèl·lit. L'accés per satèl·lit és vist com la porta cap a comunicacions de tipus màquina massiva (mMTC) en àrees on la connectivitat cel·lular és limitada o inexistent (àrees remotes, comunicacions aèries i marítimes). Aquesta tesi proporciona una avaluació del rendiment del protocol NB-IoT sota diferents condicions d'enllaç per satèl·lit i modes de transmissió. L'avaluació es realitza utilitzant la caixa d'eines MATLAB LTE.

As an expendable profiler in marine environment, XCP (Expendable Current Profiler) is mainly to measure current speed, direction and temperature. The paper is to research dynamic sinking data transmission technique for XCP. Data transmission medium is a varnished wire with diameter of 0.1mm, length of 1,800m and two parallel wires. Transmission characteristics of varnished wires can be tested by experiment and computation. The paper is to research and design a kind of base band transmission system and analyze its characteristics and performance. By utilizing digital base band signaling transmission technique, indoor and marine testing results show that designed data transmission system can reach 1,800m on varnished wires with diameter of 0.1mm if XCP probe sinks dynamically by speed of 4m/s and transmission speed is 2,400bps.

The issues of analytical and simulation-based evaluation of reliability of controlling the multi-channel signature diagnostic method are described in this paper. The analysis of tasks and classification of systems of technical diagnostics of microprocessor devices of data transmission systems is carried out. The analysis of modern microprocessor devices of data transmission systems as an object of control and diagnostics necessary for the choice of characteristics of signature analysis methods is made, that the main documents of signature analysis are dictionaries of the reference signatures. Methods of calculation and determination of signatures for signature analysis in the diagnosis of microprocessor devices are considered. It is shown that the main document of signature analysis is the dictionary of reference signatures. A comparative analysis of the methods of calculation and determination of reference signatures used in the diagnosis of microprocessor devices has been performed. Algarymms and simulation programs for one and multi-channel signature methods for automating the determination of reference signatures for multi-output microprocessor devices have been developed

The development of technological image capturing and data transmission systems has made it possible for authorities to use more developed ways to attain more detailed situation information. Real-time video offers numerous possibilities to authorities, especially in rescue services. Situation information acquired through real-time video can for example make the production of rescue service officers' situation picture more efficient and accurate. Real-time video also serves distance leading exceptionally well and makes decision-making a lot easier because of more accurate situation information. This paper is reporting the results of a Thesis conducted in cooperation between Laurea University of Applied Sciences, Emergency Services College, Eye Solutions Ltd. and VideoDrone Ltd. as part of the AIRBorne information for Emergency situation Awareness and Monitoring (AIRBEAM) project. The paper evaluates and discusses the suitability of situation information produced by real-time video to the officer in charge of rescue services. The paper ultimately attempts to understand real-time video in rescue services as a phenomenon, which possibilities are not yet utilized. The paper is defined to focus on different levels of rescue service leading and addresses three real-time video production sources.

The communication protocols are an essential part for the data communication of Internet of Things (IoT) applications. However, the selection of a communication protocol is challenging because it depends on the nature of the IoT system and its data transmission system. Copious communications protocols have been developed and employed by researchers based on their requirements in the last decade. Though, none of them is able to support all criteria requirements, like energy efficiency, security, quality of service, etc. Of all types of IoT systems, communication protocols are an ongoing dilemma for the IoT industry; consequently, it is important to analyze the comportments and mechanisms of this latter to determine their best-fit scenarios. Therefore, this paper presents an evaluation of established communication protocols HTTP, MQTT, DDS, XMPP, AMQP and CoAP for IoT applications. Firstly, it presents the broad comparison among these communication protocols to introduce their characteristics comparatively. Subsequently, it performs a detailed and in-depth analysis of the related process of gaining an understanding of their strengths and limitations. Therefore, based on this detailed evaluation, the user can determine their appropriate use for various IoT applications depending on their needs, efficiency, and suitability.

One of the alternative methods for high-speed signal processing in channel with memory caused by its frequency selective properties is the development of a radio data transmission system using the theory of resolution time. This paper presents a new method for its effective memory estimation, with low computational complexity and providing high accuracy of the obtained results, that is a prerequisite to develop real time algorithm for signal processing radio data transmission system based on this theory.

Phased array is a new type of data transmission antenna for remote sensing satellite. The antenna scans its beam to keep the advantage of wide area coverage and high gain to get large EIRP. According to the general requirements of data transmission subsystem employed for earth observing satellite, the relationship of the parameters subject to the phased array data transmission is analyzed. A design of data transmission system suitable for engineering application and a demonstration antenna array is presented in this paper.

Powerline communication (PLC) is a promising technology that allows data transmission through electric power distribution networks, with the advantage of using an existing infrastructure, reducing costs in maintenance and installation of telecommunication systems. However, once power systems are not designed specifically for data transmission, it may exhibit limiting electromagnetic interference characteristics for desirable system performance. This paper aims to analyze data rate performance of a Broadband PLC system when operating under conditions of conducted and radiated electromagnetic interference caused by lighting devices. The analyzed data transmission system presented good performance when subject to radiated electromagnetic interference, but was shown to be sensitive to conducted disturbances caused by lighting devices.

The rising availability of digital traces provides a fertile ground for data-driven solutions to problems in cities. However, even though a massive data set analyzed with data science methods may provide a powerful and cost-effective solution to a problem, its adoption by relevant stakeholders is not guaranteed due to adoption barriers such as lack of interpretability and interoperability. In this context, this paper proposes a methodology toward bridging two disciplines, data science and transportation, to identify, understand, and solve transportation planning problems with data-driven solutions that are suitable for adoption by urban planners and policy makers. The methodology is defined by four steps where people from both disciplines go from algorithm and model definition to the development of a potentially adoptable solution with evaluated outputs. We describe how this methodology was applied to define a model to infer commuting trips with mode of transportation from mobile phone data, and we report the lessons learned during the process. E.G-G. was partially funded by CONICYT Fondecyt de Iniciación #11180913.

This paper proposes a new method for generating the communication channel key of the marine data transmission system. The channel frequency response (CFR) of the communication channel is extracted to characterize the communication channel, which is detected, quantized, negotiated, and consistently acknowledged. As a method of generating and amplifying new privacy key for communication channels. The method generated a large number of key bits through a sliding window and replaces multiple rounds of negotiation with one round of negotiation; the method only defines the maximum length of the initial key such that the initial key has random variation characteristics in the length and data dimensions. Experiments show that it has the characteristics of high reliability and is suitable for the confidentiality of the communication channel of the marine data transmission systems.

This paper considers the issues of organizing the reliable data transmission over non-stationary discrete communication channels. An analysis of existing data transmission systems with feedback is carried out, with defining the shortcomings of existing mechanisms for determining the optimal data block length in data transmission systems with feedback. Data transmission method is developed based on reinforcement learning.

A rede CAN é usada para conectar exclusivamente microcontroladores através de um barramento metálico e mensagens em broadcast. Nas versões 2.0A e 2.0B, a carga útil do quadro CAN carrega até 8 bytes de dados. Para enviar dados maiores, é necessário usar mais de um quadro. Este artigo apresenta um protótipo de rede CAN usando seis placas Arduino que geram e consomem diferentes tipos de sinais conectados através do módulo CAN MCP2515. A biblioteca usada para ativar o módulo CAN MCP2515 organiza os 8 bytes de carga útil do quadro CAN em uma matriz de 8 posições, cada uma com 1 byte. Aproveitando esse recurso, além de demonstrar como usar este dispositivo, também serão apresentadas algumas propostas de melhoria na rede CAN. O primeiro deles é uma forma de tratamento de sinais periódicos e aperiódicos. A utilização do quadro CAN e do barramento de comunicação foi otimizada enviando vários sinais em um único quadro, transportando um sinal em cada posição do vetor. O mapeamento de valores para intervalos compatíveis com o espaço disponível em cada posição do vetor permitiu o transporte de valores maiores que 8 bits dentro das posições do vetor. A latência de transmissão foi calculada usando o método mills() e um gateway CAN foi implementado para reduzir o domínio de broadcast para a transmissão das mensagens. The CAN network is used to connect microcontrollers exclusively through a metal bus and broadcast messages. In versions 2.0A and 2.0B the CAN frame payload carries up to 8 bytes of data. To send larger data it is necessary to use more than one frame. This paper presents a CAN network prototype using six Arduino cards that generate and consume different types of signals connected through the MCP2515 CAN module. The library used to enable the MCP2515 CAN module organizes the 8 bytes of CAN frame payload into an 8-position array, each with 1 byte. Taking advantage of this feature, besides demonstrating how to use this device, some proposals for improvement in the CAN network will also be presented. The first of these is a form of treatment of periodic and aperiodic signs. CAN frame and communication bus utilization has been optimized by sending multiple signals within a single frame, carrying one signal at each position of the vector. Mapping values to intervals compatible with the available space at each vector position allowed the transport of values larger than 8 bits within the vector positions. Transmission latency was calculated using the mills() method and a CAN gateway was implemented to reduce the broadcast domain of messages.

Industrial networks combine elements of distributed control systems. These elements are process stations, operator stations, engineering stations and other elements, which enable the exchange of data between industrial systems. Industrial systems are used to send process variable values and other data exchanged between the stations - elements of a distributed control system and SCADA systems. The fitness of an entire station system depends on the fitness of the communication system. This is why industrial networks are characterized by high reliability. When speaking about the fitness of a data transmission system, we can consider its instantaneous fitness (functional) or interval fitness (task-related). It is not always necessary to maintain instantaneous fitness. Sometimes interval fitness is enough. The paper discusses the issue of a need to maintain one of them, relative to various types of data transmission.

The paper considers the principles of the construction of a data transmission system in automated air traffic control systems established in Ukraine and functions within the framework of the international system for the exchange of information on air traffic. The analysis made it possible to assert that the existing system is based on the hierarchical principle of transmission and processing of information. For information transfer, the principles of switching buffered packets using different strategies are used, which may affect the basic characteristics of the packet switching process in ACS network by air traffic. As a result of researches it was established that for the development of switching means in networks it is necessary to use buffer memory which is designed for the maximum information load.

Absrtact: transmission line is an important part of smart grid construction, which has many factors, such as wide distribution, long distance, complex working environment, difficult maintenance and easy to be damaged by natural external forces, etc. Among them, the construction of transmission line online monitoring network plays an important role in ensuring the stability and safe operation of online monitoring technology. In this paper, through the analysis of the transmission line and on-line monitoring transmission data demand and the existing problems of the current communication network, the communication network and data transmission system for transmission line monitoring is designed, which provides some reference for the construction of stable operation of the transmission line on-line monitoring network.

Intrabody communication (IBC) is a novel data transmission method to transmit the data using human body as a transmission channel. In this paper we have taken efforts to develop a methodology for IBC. The IBC will play a vital role for the data transmission through the human body. The idea is driven from the vision of a cable free secure data transmission system. This paper examines the data transmission between the two mobile devices for the different conditions, different distances, different modes, IBC transceiver design and the practical uses in future.

This paper designs a wireless data transmission system based on LoRa technology in view of the safety requirements of the upgrade of the oil refinery sewage treatment system. On the basis of protecting the data flow of the previous system, the measurement data of each sensor is collected and sent to the PLC in a wireless manner. By the reasonable circuit structure design and the wireless transmission mode choice, this system has high explosion-proof performance, high safety, and has the advantages of good real-time performance, high maintainability, and easy expansion.

Today we are living in a world where smart homes are highly prevalent. Such homes involve many smart devices to form an Internet of Things (IoT) structure and huge amounts of data are generated. Efficient transmission of these data is vital since they may contain security related information also. The resident of the smart homes should be notified about any intrusions or emergencies such fire accidents when they are away from the home. In this paper, we propose a mechanism based on Wi-Fi 802.11b where various types of data traffic are considered which detects the intrusions and the emergencies in a smart home based scenario. Here alerts are sent to the resident through a cloud server. A multi-tiered detection and data transmission system is designed to improve the efficiency of the alert mechanism.

Due to the deficiency of data transmission speed and capacity of the GSM/GPRS network, in this paper we present the design of a data transmission system in the remote monitoring system of composite insulators, which is based on 3G and embedded technology. The program uses OK6410ARMll as a controller, and uses AD3812_ V2 as a 3G communication module. This paper briefly describes the hardware design production of the Linux system and Qt transplantation, focusing on stating the process of implementation of the wireless data transmission based on TCP/IP protocol. The program has improved the speed and reliability of data transmission. Compared to the GSM/GPRS network, this system has effectively improved the accuracy and efficiency of the insulator hydrophobic detection.

In the paper we consider a method of efficiency improvement for Zero-Force (ZF) and Minimum Mean-Squared Error (MMSE) decision making algorithms in Multiple-Input Multiple-Output (MIMO) data transmission systems. A gain provided by the proposed approach is estimated for a few scenarios via simulations.

The paper substantiates the necessity of currently used quantum frequency standards modernization for solving various problems. One of the directions of quantum frequency standard modernization is proposed, in particular, the development of a new design of a frequency synthesizer for improving metrological characteristics of quantum frequency standard. Results of experimental studies show the effectiveness of the new development application.

International audience; Since a few years, the vehicle industry tends to increase the performances of the lights based on led technologies. Nowadays, led systems are used as a standard by motor vehicles manufacturers. Led lights present higher reliability and are more flexible regarding the design or power adjustments. Furthermore, led systems are also very convenient for intensity modulation like in telecommunication fields. We developed a very simple data transmission system based on led that aims to be highly robust at short or medium distances - a few meters up to 15 meters. This visible light communication is dedicated to the cooperation between vehicles and road infrastructures to enhance the security of the traffic. This paper explains the choices and first results on the data transmission performances. In this paper, we present a first prototype of the system we made and experimental results.

In this paper, we present a reverse conversion from a two-stage Residue Number System (RNS) to a Binary Number System (BNS) with a special set of level 1 modules {2 α1, 2 α2 − 1, …, 2αn − 1} and level 2 modules {2 β1, 2 β2 − 1, …, 2 β k − 1}. The proposed method is based on the Chinese Remainder Theorem (CRT) with fractions and using a calculation method that uses constant multiplications to speed up calculations. This article discusses the simulation of FPGA reverse conversion to a two-stage RNS using the proposed method and the standard CRT using adders, their comparison of latency and hardware costs.

Quantitatively assessing the importance or criticality of each link in a network is of practical value to operators, as that can help them to increase the network's resilience, provide more efficient services, or improve some other aspect of the service. Betweenness is a graph-theoretical measure of centrality that can be applied to communication networks to evaluate link importance. However, as we illustrate in this paper, the basic definition of betweenness centrality produces inaccurate estimations as it does not take into account some aspects relevant to networking, such as the heterogeneity in link capacity or the difference between node-pairs in their contribution to the total traffic. A new algorithm for discovering link centrality in transport networks is proposed in this paper. It requires only static or semi-static network and topology attributes, and yet produces estimations of good accuracy, as verified through extensive simulations. Its potential value is demonstrated by an example application. In the example, the simple shortest-path routing algorithm is improved in such a way that it outperforms other more advanced algorithms in terms of blocking ratio.

The performance sharing can be widely seen in different kinds of engineering systems, such as meshed power distribution systems and interconnected data transmission systems. This paper presents a study of systems consisting of multi-state units connected as two performance sharing groups, and the suggested methodology can be adapted for the case of three or more performance sharing groups. To be more general, the system unit is allowed to be in one single performance sharing group or both. Each unit has a random demand to satisfy, and the units can transmit capacity with each other given that the total performance transmitted in each performance sharing group does not surpass its maximum transmission capacity. An algorithm based on the universal generating function technique is proposed to evaluate the system reliability and the expected system performance deficiency. Copyright © 2016 John Wiley & Sons, Ltd.

In this paper, a -Phase geographic GreeTwody Forwarding (TPGF) routing algorithm is proposed in wireless multimedia sensor networks (WMSNs). TPGF is a pure geographic greedy forwarding routing algorithm, which does not include the face routing and does not use planarization algorithms. Simulation comparison in this paper indicates that TPGF is highly suitable for multimedia transmission in WMSNs. peer-reviewed

Act on Promotion of Information and Communications Network Use and Information Protection」 is revised in August 18, 2012. The law requires the network isolation to company that hold 1 million people or more than your personal information and revenue 10 billion won or more telecommunications service providers. Unidirectional Data Transmission System is very important in separated network. Because Received (September 09, 2015), Review Result(September 25, 2015) Accepted(October 12, 2015), Published(December 31, 2015) 138-200 KOSYAS, Inc. R&D Center, 63-10 Munjeong-dong, Songpa-gu, Seoul, Korea email: hjlee@kosyas.com 138-200 KOSYAS, Inc. R&D Center, 63-10 Munjeong-dong, Songpa-gu, Seoul, Korea email: chodi@kosyas.com (Corresponding Author) KOSYAS, Inc. R&D Center, 63-10 Munjeong-dong, Songpa-gu, Seoul, Korea email: kabseung@kosyas.com * 본 연구는 미래창조과학부 및 정보통신기술진흥센터의 정보통신 방송 연구개발사업의 일환으로 수행하였음. [13-912-06-005, 클라우드 환경에서 가상화 네트워크 및 시스템의 보안성 평가를 위한 보안 스캐너 개발] A Study of Unidirectional Data Transmission System Security Model for Secure Data transmission in Separated Network Copyright c 2015 HSST 540 Unidirectional Security Gateways is gateway to maintain security of protected network. But development Companies of Unidirectional Data Transmission System think that work efficiency is the important than security. In this paper, for secure data transmission between a separated network we propose a Security model for Unidirectional Data Transmission System.

The paper analyzes the data transmission system based on UWB technology for unmanned surface vehicles. The main advantages of using ultra-wideband signals are presented. It is shown that such a communication system allows for a transmission speed of several tens of Mbps with a radio path length of not more than 10 m.

The real-time operation status monitoring of natural gas wells in the wilderness area has problem such as construction suffering, high maintenance cost, and high data transmission cost. In view of the above problems, this paper studies the design of a multi-node data transmission system using Beidou satellite short message as the data transmission means. Firstly, analysed the advantages and disadvantages of several common data transmission methods and introduced the Beidou short message; Secondly, introduced the main working parameters of the oil and gas well; Thirdly, The data acquisition and transmission system was designed in detail and the prototype system was developed. The experimental results show that the data transmission success rate of the system can reach more than 98%. This system solution can provide a useful reference for engineering with similar requirements.

In this paper, high-speed planar waveguides of optoelectronic data bus are suggested replacing low-throughput backplane electrical interconnects. Optical polymer polydimethylsiloxane (PDMS) and cost-efficient soft lithography technology are proposed for optoelectronic bus fabrication. In accordance with polymer optoelectronic data bus fabrication process work-out results the chosen materials and technology applicability was confirmed. As an optoelectronic bus characteristics measurement results, 14 dB/cm propagation losses value was obtained by general use materials.