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Relevant bibliographies by topics / Synchronous digital hierarchy (Data transmission)

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Academic literature on the topic 'Synchronous digital hierarchy (Data transmission)'

Author: Grafiati

Published: 4 June 2021

Last updated: 30 July 2024

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Journal articles on the topic "Synchronous digital hierarchy (Data transmission)"

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Shao, Sujie, Qingtao Zeng, Shaoyong Guo, and Xuesong Qiu. "Random Violation Risk Degree Based Service Channel Routing Mechanism in Smart Grid." Energies 11, no. 11 (2018): 2871. http://dx.doi.org/10.3390/en11112871.

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Smart gird, integrated power network with communication network, has brought an innovation of traditional power for future green energy. Optical fiber technology and synchronous digital hierarchy (SDH) technology is widely used in smart grid communication transmission network. It is a challenge to reduce impact of the availability of smart grid communication services caused by random failures and random time to repair. Firstly, we create a service channel violation risk degree (SCVRD) model to precisely track the violation risk change of communication service channel. It is denoted by the probability of service channel cumulative failure duration exceeding the prescribed duration. Secondly, a service channel violation risk degree routing mechanism is proposed to improve the availability of communication service. At last, the simulation is implemented with MATLAB and network data in one province are used as data instance. The simulation results show that the average service channel failure rate of availability-aware routing based on statistics (AAR-OS) algorithm and risk-aware provisioning algorithm are reduced by 15% and 6%, respectively.

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Choudhury, Panchali Datta, and Tanmay De. "A Study on Evolution of Optical Fiber Communication from PDH to SDM Technology." Current Journal of Applied Science and Technology 43, no. 7 (2024): 140–60. http://dx.doi.org/10.9734/cjast/2024/v43i74413.

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In today’s world, long distance communication is a vital part of communication technology. In the field of communication, continuous research is going on for transmission of a greater number of bytes. In this article we discuss the different stages of long-distance communication via optical fiber and we go through the history of optical fiber communication and discuss the different stages of development in the optical fiber communication. This article briefly discusses the following stages of optical fiber communication: i) Plesiochronous Digital Hierarchy (PDH) ii) Synchronous Digital Hierarchy (SDH) iii) Wavelength Division Multiplexing (WDM) iv) Elastic Optical Networks (EONs) v) Space Division Multiplexing (SDM).

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Ohtake, Kohhei, Hiroyuki Kasai, and Toshinori Tsuboi. "Jitter transmission model and jitter power estimation in pointer processing for synchronous digital hierarchy." Electronics and Communications in Japan (Part I: Communications) 79, no. 10 (1996): 55–68. http://dx.doi.org/10.1002/ecja.4410791007.

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Muhammad Reza Nugraha, Irwan Syah, Siti Annisa Nindia Larasati, and Didik Aribowo. "Perencanaan Sistem Optical Transport Network (OTN) Pada Sistem Transmisi DWDM." Jurnal Ilmiah Teknik Informatika dan Komunikasi 3, no. 2 (2023): 96–101. http://dx.doi.org/10.55606/juitik.v3i2.491.

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In the era of rapid development of information and communication technology, modern society requires reliable and sophisticated means of communication. The required means of communication must be aimed at meeting current service needs, but also oriented towards meeting current and future service needs. To meet this need, a reliable network is needed, with a large bandwidth capacity with easy capacity additions, better performance, high levels of availability, and good flexibility. Fiber Optic Network is a network that is trusted to be able to handle this problem. Developments in this network were preceded by two types of transmission systems used, namely Plesiochronous Digital Hierarchy (PDH) and Synchronous Digital Hierarchy (SDH), and currently developing Dense Wavelength Division Multiplexing (DWDM) and Coarse Wavelength Division Multiplexing (CWDM) technologies.

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Paxal, V., P. Jourdain, and G. Karam. "Error-Correction Coding for High-Speed Optical Transmission Systems Based on the Synchronous Digital Hierarchy." European Transactions on Telecommunications 4, no. 6 (1993): 623–28. http://dx.doi.org/10.1002/ett.4460040611.

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zhang, Geng, Yang Wang, Huixia Ding, and Yidan Ren. "Design and Implementation of Power Communication System SDH Network Simulation Tool Based on EXATA." MATEC Web of Conferences 173 (2018): 01003. http://dx.doi.org/10.1051/matecconf/201817301003.

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The power communication system based on synchronous digital hierarchy(SDH) optical, transmission technology is an important component to ensure the safety and stability of power network. After, years of development, the network has been gradually mature, but it still has many problems, such as the weak, structure of the communication network, insufficient network transmission capacity, weak network access and network management. Therefore, it is necessary to do the research and take simulation for the power communication system based on SDH optical transmission technology. The paper builds up the simulation, platform of SDH network in power communication system based on the EXATA simulation tools. For SDH, device, we implemented functions including multiplexing, demultiplexing and digital cross-connection. And, the simulation analysis provides a great theoretical support for constructing equipment models and network, topology.

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Batenkov, Kirill. "ANALYSING DIGITAL CHANNEL AND PATH ERROR PARAMETERS USING PLESIOCHRONOUS AND SYNCHRONOUS DIGITAL HIERARCHIES." Automation and modeling in design and management 2023, no. 4 (2023): 28–36. http://dx.doi.org/10.30987/2658-6436-2023-4-28-36.

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The aim of the work is to summarize the main features of normalizing the of digital channel and path error parameters for modern telecommunications network equipment. The research methods are comparative analysis combined with the analysis of domestic standards and foreign recommendations regarding the standardization of digital channel and path error parameters. The main calculated relationship for the digital channel and path error characteristics are presented, namely long-term standards for the coefficient of seconds with errors, the coefficient of seconds with significant errors and the coefficient of blocks with background errors. Examples show the procedure for their calcu-lation and analysis. The paper specifies that the number of units to be monitored per second should be increased with the transmission rate to keep a unit size constant. The error rates of synchronous digital paths are emphasized to re-main zero for long periods of time even at Gbit/s rates, and a significant factor of error seconds corresponds to poor quality paths, so monitoring the error seconds must be performed for maintenance purposes. The findings are that long-term standards for error parameters of digital channels and paths don’t only take into account the type of digi-tal hierarchy and rate modes, but also the composition of the hypothetical reference path and its length.

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HEALY, EILEEN M. "SONET: SYNCHRONOUS OPTICAL NETWORK STANDARDS." International Journal of High Speed Electronics and Systems 01, no. 02 (1990): 169–81. http://dx.doi.org/10.1142/s0129156490000095.

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Fundamental worldwide standards for high speed telecommunications networks were approved in 1988. In the United States these standards are referred to by the acronym SONET, meaning Synchronous Optical Network. Since 1988, SONET has become a common term in the telecommunications lexicon. It defines a digital signal hierarchy beginning at 51.840 Mb/s for networking a wide variety of voice, video, and data services. Deployment of technology based on these standards will provide a platform for enhancing existing networks and delivering sophisticated new services. This paper describes the basic attributes and capabilities of SONET.

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Weng, Shao Lin. "Research on Performance Analysis of Digital Baseband Signal Transmission." Applied Mechanics and Materials 437 (October 2013): 829–33. http://dx.doi.org/10.4028/www.scientific.net/amm.437.829.

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Nowadays, in order to improve the quality of signal transmission and reduce the signal attenuation and noise interference, the transmission digital baseband signal modulation become mainstream in today's signal transmission. For the digital baseband signal transmission performance of research helps us to understand the process of digital signal transmission. Firstly, using shift registers to produce m sequence, used to simulate the data signal and the pseudo random noise signal. Then, to design a low pass filter, used to simulate the channel. Data signal transmission in the channel was carried with additive random noise interference, we can measure signal interference by observing eye pattern at the receiving terminal. If to Manchester encoding of data signal, the receiver decoding output data signal can be extracted using the synchronous clock circuit to get the clock signal to synchronize, and display the eye pattern, which is used to evaluate the performance of the transmission system. And we put forward the optimization scheme of the digital baseband signal transmission performance through the research.

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SANTIAGO, A., J. P. CÁRDENAS, M. L. MOURONTE, V. FELIU, and R. M. BENITO. "MODELING THE TOPOLOGY OF SDH NETWORKS." International Journal of Modern Physics C 19, no. 12 (2008): 1809–20. http://dx.doi.org/10.1142/s0129183108013369.

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SDH (Synchronous Digital Hierarchy) is the standard technology for the information transmission in broadband optical networks. Unlike the Internet, SDH networks are strictly planned; rings, meshes, stars, or tree-branches topologies are designed to connect their basic elements. In spite of that, we have found that the SDH network operated by Telefónica in Spain shares remarkable topological properties with other real complex networks empirically analyzed, such as the worldwide web network. In particular, we have found power-law scaling in the degree distribution (P(k) ~ k-γ) and properties of small world networks. Considering real planning directives that take into account geographical and technological variables, we propose an ad hoc computational model that reproduces the aforementioned topological traits observed in the Spanish SDH network.

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Dissertations / Theses on the topic "Synchronous digital hierarchy (Data transmission)"

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Durrett, Bret W. "Use of cross-connect clusters to optimize routing in STM-64-based SDH optical network systems." [Denver, Colo.] : Regis University, 2005. http://165.236.235.140/lib/BDurrett2005.pdf.

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Johnston, Robert Thomas. "A traffic generation algorithm for SDH digital cross-connects." Diss., Georgia Institute of Technology, 1999. http://hdl.handle.net/1853/15723.

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Autry, Chris Brian. "Minimization of jitter in SDH/SONET networks via an all-digital desynchronizer." Diss., Georgia Institute of Technology, 1997. http://hdl.handle.net/1853/15412.

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Lim, Wee Shoong. "An evaluation of management techniques for SONET/SDH Telecommunication networks." Thesis, Monterey California. Naval Postgraduate School, 2004. http://hdl.handle.net/10945/1389.

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Approved for public release; distribution is unlimited<br>A study of SONET network management applications and the load they impart to the network is conducted to provide a better understanding of the capability of various management approaches. In this study, a SONET network is set up in the Advanced Networking Laboratory of the Naval Postgraduate School using four Cisco ONS 15454s. Next, two Element Management Systems, the Cisco Transport Controller and the Cisco Transport Manager, are deployed onto the SONET network. Subsequently, the network traffic of the Element Management Systems is captured and analyzed using a packet analyzer. Link utilization of the two tools is computed using the first-order statistics of the captured traffic distributions. In addition, the Hurst parameter is estimated using the variance-index plot technique (which uses higher-orders statistics of the modeled distributions) to determine the captured traffic's degree of self-similarity. Finally, the calculated utilization is extrapolated to obtain the link utilization for 2500 network elements (the maximum number supported by the Cisco Transport Manager). The result obtained is useful in determining the maximum number of network elements (Cisco ONS 15454s) that the Cisco Transport Manager can support from a network loading point of view.<br>Civilian, Ministry of Defense, Singapore

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Sholander, Peter Edward. "Characterization and minimization of jitter and wander in SDH networks." Diss., Georgia Institute of Technology, 1995. http://hdl.handle.net/1853/13461.

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Lu, Chun, Yihong Yan, and Jian Song. "An Application of Sync Time Division Multiplexing in Telemetry System." International Foundation for Telemetering, 2013. http://hdl.handle.net/10150/579685.

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ITC/USA 2013 Conference Proceedings / The Forty-Ninth Annual International Telemetering Conference and Technical Exhibition / October 21-24, 2013 / Bally's Hotel & Convention Center, Las Vegas, NV<br>High speed real-time data transportation is most important for telemetry systems, especially for large-scale distributed systems. This paper introduces a STDM (Sync Time Division Multiplexing) network structure for data transportation between devices in telemetry systems. The data in these systems is transported through virtual channels between devices. In addition, a proper frame format is designed based on PCM format to meet the needs of synchronization and real-time transportation in large-scale distributed telemetry systems.

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Brandt, A. D. "Implementation of an SDH simulator using SDR." Thesis, Stellenbosch : University of Stellenbosch, 2006. http://hdl.handle.net/10019.1/2467.

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Thesis (MScEng (Electrical and Electronic Engineering))--University of Stellenbosch, 2006.<br>A Synchronous Digital Hierarchy (SDH) point-to-point bi-directional link was implemented at a base Synchronous Transfer Mode level 1 (STM 1) signal rate. The full STM-1 multiplexer was implemented and the functional code developed to Virtual Container level 4 (VC4) level. The implementation was realized using a Software Defined Radio (SDR) architecture that managed and linked the SDH atomic units into a STM-1 SDH multiplexing structure. These atomic units have been well defined in recommendation G.707 [1]. The functional description of each unit was based on the G.783 [8] recommendation which specifies a library of basic building blocks and set of rules by which these atomic functions should be combined into various functional layers. These layers interconnect to ultimately form a bi-directional path in the SDH network. A SDH Management Sub network (SMS) was implemented using a graphical user interface to perform a monitoring function for the bi-directional link.

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McGleenon, Patrick. "Modelling the management behaviour of synchronous digital hierarchy transmission networks." Thesis, Queen's University Belfast, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.361221.

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Park, Won Bae. "Routing algorithms for Clos networks in SONET/SDH digital cross-connect systems." Diss., Georgia Institute of Technology, 1996. http://hdl.handle.net/1853/13837.

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Irestål, Erik. "Break out Box for Transmission of Synchronous Video and CAN Data Streams over Gigabit Ethernet." Thesis, Linköping University, Department of Electrical Engineering, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-18377.

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<p>Active safety systems for automobiles in the form of camera systems have evolved rapidly the last ten years, Autoliv Electronics in Linköping develops multiple such systems. In their development process there is a need for a Break out Box (BoB) to record and playback video and CAN data as if the camera system was used in an actual automobile. The aim of this thesis has been to develop a BoB for these camera systems. The work has been divided into three phases; identiﬁcation of requirements, design of the BoB and implementation of a prototype. The project has addressed four known issues with the currently used BoB; bandwidth, modularity, synchronization and usability. The result is a new BoB which is based on an FPGA connecting to a PC over Gigabit Ethernet. The design is an extendible platform for multiple channels of video, CAN data, other serial data and future extensions. A prototype proves the design concept by successfully recording video for the Autoliv NightVision system onto a PC.</p>

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Books on the topic "Synchronous digital hierarchy (Data transmission)"

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Jaina, Rājeśa Kumāra. Principles of synchronous digital hierarchy. Taylor & Francis, 2012.

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Sexton, Mike. Broadband networking: ATM, SDH, and SONET. Artech House, 1997.

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Kartalopoulos, Stamatios V. Next generation SONET/SDH: Voice and data. Wiley-Interscience, 2005.

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Ablett, Susan. SDH: Strategies, benefits, and technology. Analysys Publications, 1992.

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Helvoort, Huub van. The ComSoc guide to next generation optical transport: SDH/SONET/OTN. IEEE Press, 2009.

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Helvoort, Huub van. The ComSoc guide to next generation optical transport: SDH/SONET/OTN. IEEE Press, 2009.

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Helvoort, Huub van. SDH/SONET Explained in Functional Models. John Wiley & Sons, Ltd., 2005.

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Thalmann, Markus Andreas. A SDH add/drop multiplexer as "system-on-chip". Hartung-Gorre, 2000.

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1961-, Reid Andy, ed. Transmission networking: SONET and the synchronous digital hierarchy. Artech House, 1992.

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Principles of synchronous digital hierarchy. Taylor & Francis, 2012.

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Book chapters on the topic "Synchronous digital hierarchy (Data transmission)"

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Brown, T. S., D. Rowland, A. Vinall, and A. O’Neill. "Broadband Transport — the Synchronous Digital Hierarchy." In Data Network Engineering. Springer US, 1999. http://dx.doi.org/10.1007/978-1-4615-5215-4_13.

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Datta, Debasish. "SONET/SDH, OTN, and RPR." In Optical Networks. Oxford University Press, 2021. http://dx.doi.org/10.1093/oso/9780198834229.003.0005.

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With the emergence of high-speed optical transmission, the pre-existing plesiochronous digital hierarchy (PDH) appeared unsuitable for achieving network synchronization, leading to the development of the synchronous optical network (SONET) and synchronous digital hierarchy (SDH) as the two equivalent standards for circuit-switched optical networks. Several bandwidth-efficient techniques were also developed to carry packet-switched data traffic over SONET/SDH networks, offering some useful data-over-SONET/SDH architectures. Subsequently, with the increasing transmission rates for SONET/SDH and Ethernet-based LANs, a convergent networking platform called optical transport network (OTN), was developed. With the ever-increasing volume of bursty data traffic, a standard for packet-switched ring networks, called resilient packet ring (RPR), was also developed for better bandwidth realization in optical fibers. In this chapter, we first present the SONET/SDH networks and the techniques for supporting the data traffic therein, followed by a description of the basic concepts and salient features of the OTN and RPR networks. (147 words)

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"Transmission Media for PDH/SDH and OFC Technology." In Principles of Synchronous Digital Hierarchy. CRC Press, 2012. http://dx.doi.org/10.1201/b12731-16.

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"Transmission Media for PDH/SDH and OFC Technology." In Principles of Synchronous Digital Hierarchy. CRC Press, 2018. http://dx.doi.org/10.1201/9781315216355-18.

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"Data Over SDH." In Principles of Synchronous Digital Hierarchy. CRC Press, 2012. http://dx.doi.org/10.1201/b12731-14.

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"Data Over SDH." In Principles of Synchronous Digital Hierarchy. CRC Press, 2018. http://dx.doi.org/10.1201/9781315216355-16.

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Conference papers on the topic "Synchronous digital hierarchy (Data transmission)"

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Čukić, Nina, Marina Ristić, Marko Medin, and Željko Vasiljević. "ANALIZA SAVREMENIH TELEKOMUNIKACIONIH TEHNOLOGIJA ZA POTREBE ZAMENE POSTOJEĆE SDH TRANSPORTNE TELEKOMUNIKACIONE MREŽE KOD SISTEMA SA PRENOSOM KRITIČNIH SERVISA." In 35. Savetovanje Srpskog nacionalnog komiteta Međunarodnog saveta za velike električne mreže. Srpski nacionalni komitet Međunarodnog saveta za velike električne mreže CIGRE Srbija, 2023. http://dx.doi.org/10.46793/cigre35.1241c.

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Numerous power plants are still using Synchronous Digital Hierarchy (SDH) technology in their telecommmunication transport network. The main reason is that this technology fully meets requirements regarding network availability, reliability and data security. However, the production and delivery of SDH equipment and its spare parts stopped by the end of 2020 and technical support will cease by the end of 2025, which imposed the need to choose appropriate contemporary solution that would replace the existing telecommunication transport network and respond to the specific requirements for critical data transmission. This paper deals with the analyses of currently available transport technologies which will be suitable for SDH migration and transmission of TDM services. The analyses considered: Optical transport networks (OTN), MPLS-TE/MPLS-TP, Carrier Ethernet and SD-WAN. The paper offers a summary of the results of performance analysis and comparative analysis of proposed technologies that can meet the requirements of telecommunications traffic of high- risk plants (such as power plants) and enable phased implementation, without disrupting the system in operation

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Noe, Reinhold, Timo Pfau, Olaf Adamczyk, et al. "Real-time Digital Carrier & Data Recovery for a Synchronous Optical Quadrature Phase Shift Keying Transmission System." In 2007 IEEE/MTT-S International Microwave Symposium. IEEE, 2007. http://dx.doi.org/10.1109/mwsym.2007.380539.

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Manosso, Lucas Zanatta, and Victor J. De Negri. "Design and Analysis of a Digital Hydrostatic Transmission for Wind Turbines." In BATH/ASME 2022 Symposium on Fluid Power and Motion Control. American Society of Mechanical Engineers, 2022. http://dx.doi.org/10.1115/fpmc2022-89985.

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Abstract This paper presents the design, modelling, and simulation of a digital hydrostatic transmission (D-HST) for wind turbines using fixed and variable displacement hydrostatic machines. A sizing algorithm is developed considering real efficiency data in order to optimize the selection of components and set the most energy efficient configuration. The design of a D-HST for a 28.5 kW wind turbine is carried out. Considering the use of a synchronous generator, the best D-HST configuration is set with two fixed pumps and a variable motor. A computational model is developed according to the designed system. The D-HST is compared to a conventional hydrostatic transmission (C-HST), made up by a fixed pump and a variable motor. The model of the C-HST used as a baseline was validated using an experimental setup and that is modified according to the new designed system. Steady-state and dynamic analysis are done, in order to identify the pros and cons of each concept. Furthermore, a comparison with other wind turbine drivetrains is carried out including: a widespread solution drivetrain made up by a gearbox and a doubly-fed induction generator with frequency converter; a digital displacement hydrostatic transmission; and a direct-drive wind turbine.

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Pan, J. J., W. H. Su, J. Y. Xu, S. Cao, and M. Shih. "A low drive voltage LiNbO3 electro-optic modulator for 2.5 Gbit/s and beyond B-ISDN application." In The European Conference on Lasers and Electro-Optics. Optica Publishing Group, 1994. http://dx.doi.org/10.1364/cleo_europe.1994.cwo3.

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Broadband SONET (Synchronous Optical Network), SDH (Synchronous Digital Hierarchy), and ATM (Asynchronous Transfer Mode) are widely deployed in public and private networks. OC-48/SDH-16 equipment of 2.5 Gbit/s and high speed network components beyond 2.5 Gbit/s are gaining popularity in various B-ISDN systems. Wavelength chirping of laser diode (LD) creates a hurdle in Gbit/s directly modulated optical transmitter design. Practically, transmitter consisting of a narrow linewidth LD source and an external electro-optic modulator (EOM) can provide a minimum chirping effect and is suitable for multigigabit transmission.1,2 Currently, the typical drive voltage of 3 GHz LiNbO3 EOM is about 3~4 V at 1310 nm. Therefore, the required high speed electronic drive circuits are costly and thus limits the mass deployment of the external modulated transmitter modules. In this paper, we report the demonstration of a low drive voltage (Vx = 1.7 V) EOM with optical modulation bandwidth of 5 GHz.

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Shahsavari, Sajad, Eero Immonen, Mohammed Rabah, Mohammad-Hashem Haghbayan та Juha Plosila. "MCX ꟷ An Open-Source Framework For Digital Twins". У 35th ECMS International Conference on Modelling and Simulation. ECMS, 2021. http://dx.doi.org/10.7148/2021-0119.

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This article describes ModelConductor-eXtended (MCX), which is an open-source software architecture for digital twins. The MCX framework facilitates co-execution of, and asynchronous data communication between, physical systems and their digital simulation models. MCX supports running FMUs (simulation models packaged according to the FMI specification) as well as machine learning models and customized models. We propose extensions to the previously published ModelConductor framework for higher performance and better scalability. The extensions include decoupling of the queue and the model computation module, utilization of a standard data transmission protocol and implementation of the facility to run time-consuming simulation models in a time synchronous manner. Additionally, three new validation case studies are presented. A performance evaluation shows that the extensions improve the average response time almost 4 times in three specific experiments.

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