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Journal articles on the topic 'Synchronous digital hierarchy (SDH)'

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Published: 4 June 2021

Last updated: 16 February 2022

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1

ElTaweel, Hamdy, Refat ElZonfoly, Ali ElMoghazy, and Hamdy ElMekaty. "PERFORMANCE ANALYSIS OF SYNCHRONOUS DIGITAL HIERARCHY (SDH) POINTERS." International Conference on Electrical Engineering 2, no. 2 (November 1, 1999): 36–43. http://dx.doi.org/10.21608/iceeng.1999.62272.

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2

ElTaweel, Hamdy, Refat ElZonfoly, Ali ElMoghazy, and Hamdy ElMekaty. "IMPROVEMENTS IN ERROR IMMUNITY OF SYNCHRONOUS DIGITAL HIERARCHY (SDH) POINTERS." International Conference on Electrical Engineering 2, no. 2 (November 1, 1999): 44–51. http://dx.doi.org/10.21608/iceeng.1999.62274.

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3

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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4

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 (December 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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CÁRDENAS, J. P., M. L. MOURONTE, A. SANTIAGO, V. FELIU, and R. M. BENITO. "TOPOLOGICAL ANALYSIS OF COMPLEX OPTICAL TRANSPORT NETWORKS." International Journal of Bifurcation and Chaos 20, no. 03 (March 2010): 787–94. http://dx.doi.org/10.1142/s0218127410026071.

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SDH (Synchronous Digital Hierarchy) is the standard technology for 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 this work we show that the SDH network operated by Telefónica in Spain presents a power-law scaling in the degree distribution (P(k) ~ k-γ) both at the national and provincial levels. The empirically obtained scaling exponents γ are consistent with those observed in other heterogeneous complex networks. The Spanish SDH network also displays small world properties with a high clustering and short path length similar to the Internet routers network. The province subnetworks experience similar traits with regards to such properties. Considering factors such as network design policies, user demand, geographical location and types of equipment, we propose an ad hoc computational model in order to reproduce these topological properties.

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6

Andri, Andri, and Rianto Nugroho. "Perencanaan Jaringan Komunikasi Backbone antara Bangka dan Belitung Menggunakan Radio Microwave SDH." Jurnal Ilmiah Giga 16, no. 1 (July 8, 2019): 40. http://dx.doi.org/10.47313/jig.v16i1.588.

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Pembangunan jaringan telekomunikasi antara Pulau Bangka – Pulau Belitung menggunakan radio microwave dengan teknologi SDH (Synchronous Digital Hierarchy) yang dapat memenuhi kapasitas yang besar dan kehandalan yang cukup tinggi. Pemilihan komunikasi dengan radio microwave pada link ini disebabkan banyaknya kendala pada proses implementasinya, dimana link ini melewati lautan, oleh sebab itu tidak memungkinkan membangun komunikasi kabel laut dalam waktu relatif singkat. Maka sistem komuikasi radio microwave memberikan suatu solusi. Sistem ini merambat dalam garis pandang (line of sight) atau ruang bebas sehingga tidak diperlukan syarat utama yang harus dipenuhi dalam membangun komunikasi radio microwave. Sebelum membangun sistem komunikasi radio microwave maka dibutuhkan perencanaan agar sistem ini memenuhi kebutuhan suatu sistem komunikasi. Perencanaan dilakukan terdiri atas beberapa tahap seperti penentuan lokasi, penentuan rute radio link, konfigurasi radio link dan path analisys. Tahap-tahap tersebut dilaksanakan agar mendapatkan hasil yang maksimal pada suatu perencanaan. Hasil perencanaan dapat digunakan sebagai referensi penentuan penggunaan perangkat yang sesuai dengan spesifikasi dalam pembangunan komunikasi radio microwave dengan rute Pulau Bangka – Pulau Belitung agar mendapatkan hasil yang sesuai dengan standarisasi internasional. Dalam hal ini standar yang digunakan mengacu pada ITU-R.

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7

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 (October 23, 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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8

Meitasari, Dwi, and Rianto Nugroho. "Perencanaan Jaringan Komunikasi Antara Manado dan Sofifi menggunakan Radio Microwave." Jurnal Ilmiah Giga 19, no. 1 (March 25, 2019): 35. http://dx.doi.org/10.47313/jig.v19i1.562.

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Pembangunan jaringan telekomunikasi antara Sulawesi Utara (Manado) dan Maluku Utara (Sofifi) menggunakan radio microwave dengan teknologi SDH (Synchronous Digital Hierarcy) yang dapat memenuhi kapasitas yang besar dan kehandalan yang cukup tinggi. Pemilihan komunikasi dengan radio microwave pada link ini disebabkan banyaknya kendala pada proses implementasinya, dimana link ini melewati lautan. Oleh sebab itu tidak memungkinkan membangun komunikasi kabel bawah laut (Sub Marine) dalam waktu relatif singkat maka sistem komunikasi radio microwave memberikan suatu solusi. Hasil perencanaan dapat digunakan referensi penentuan penggunaan perangkat yang sesuai dengan spesifikasi dalam pembangunan komunikasi radio microwave dengan rute Sulawesi Utara (Manado) – Maluku Utara (Sofifi) agar mendapatkan hasil yang sesuai dengan standarisasi internsional. Dalam hal standar yang digunakan mengacu pada ITU-R.

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9

Zlatar, Slađan, Vlatko Lipovac, Adriana Lipovac, and Mirza Hamza. "Practical Consistency of Ethernet-Based QoS with Performance Prediction of Heterogeneous Microwave Radio Relay Transport Network." Electronics 10, no. 8 (April 12, 2021): 913. http://dx.doi.org/10.3390/electronics10080913.

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Microwave line-of-sight radio relay (RR) systems are a constitutive part of a telecom operator transport network, as an alternative to optical transmission systems when the latter are not technically possible or rational to implement. Nowadays, RR links are quite often used in the access network for connecting mobile radio base stations, thus also enabling traffic aggregation, and so on. In this paper, we focus on a practical, real-life, five-section heterogeneous RR network, comprising classic synchronous digital hierarchy (SDH) and SDH new generation network (NGN) architecture, hybrid parallel and mutually independent transmission of native Ethernet and TDM services, and all-IP network parts. Specifically, the main task of this work is to answer whether such a diverse RR system could satisfy the quality norms for Ethernet-based services, meaning whether a tolerable RR unavailability will necessarily imply the according Ethernet quality of service (QoS) degradation. This question is addressed by the comprehensive in-service and out-of-service testing of an operational hybrid RR transmission system. After extensive practical testing and appropriate analysis of the achieved results, it came out that the impact of RR-level impairments that determine the performance prediction affected the Ethernet QoS to the extent that BER values increased to the acceptability threshold values. We believe that the preliminary results reported here could serve as a hint and a framework for a more comprehensive cross-layer test strategy in terms of both test diversity and repeating rate, which contemporary network operators need to implement in order to enable the appropriate quality of experience for users of their services.

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10

Puspita, Nurwendah, and Rianto Nugroho. "Perencanaan Jaringan Komunikasi Antara Patani Dan Sorong Menggunakan Radio Microwave." Jurnal Ilmiah Giga 19, no. 2 (March 25, 2019): 69. http://dx.doi.org/10.47313/jig.v19i2.567.

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Pembangunan jaringan telekomunikasi antara pulau Maluku – Papua<br />menggunakan radio microwave dengan teknologi SDH (Synchronous Digital Hierarchy)<br />yang dapat memenuhi kapasitas yang besar dan kehandalan yang cukup tinggi. Pemilihan<br />komunikasi dengan radio microwave pada link ini disebabkan banyaknya kendala pada<br />proses implementasinya, dimana link ini melewati lautan, oleh sebab itu tidak<br />memungkinkan membangun komunikasi kabel laut dalam waktu relatif singkat. Maka<br />sistem komuikasi radio microwave memberikan suatu solusi. Sistem ini merambat dalam<br />garis pandang (line of sight) atau ruang bebas sehingga tidak diperlukan syarat utama yang<br />harus dipenuhi dalam membangun komunikasi radio microwave. Sebelum membangun<br />sistem komunikasi radio microwave maka dibutuhkan perencanaan agar sistem ini<br />memenuhi kebutuhan suatu sistem komunikasi. Perencanaan dilakukan terdiri atas beberapa<br />tahap seperti penentuan lokasi, penentuan rute radio link, konfigurasi radio link dan path<br />analisys. Tahap-tahap tersebut dilaksanakan agar mendapatkan hasil yang maksimal pada<br />suatu perencanaan. Hasil perencanaan dapat digunakan sebagai referensi penentuan<br />penggunaan perangkat yang sesuai dengan spesifikasi dalam pembangunan komunikasi<br />radio microwave dengan rute pulau Maluku – Papua agar mendapatkan hasil yang sesuai<br />dengan standarisasi internasional. Dalam hal ini standar yang digunakan mengacu pada<br />ITU-R

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11

Kasai, H., T. Murase, and H. Ueda. "Synchronous digital transmission systems based on CCITT SDH standard." IEEE Communications Magazine 28, no. 8 (August 1990): 50–59. http://dx.doi.org/10.1109/35.58886.

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12

Owen, Henry L., and Thomas M. Klett. "Synchronous digital hierarchy network pointer simulation." Computer Networks and ISDN Systems 26, no. 5 (January 1994): 481–91. http://dx.doi.org/10.1016/0169-7552(94)90063-9.

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13

Atakishchev, O. I., L. S. Kulikov, and E. Yu Musakin. "Algorithm of Synchronous Digital Hierarchy Signal Recognition." Telecommunications and Radio Engineering 62, no. 1-6 (2004): 313–17. http://dx.doi.org/10.1615/telecomradeng.v62.i4.10.

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14

Takatori, Masahiro, Yukio Nakano, Keiichi Ishida, Yoshihiro Ashi, Tadayuki Kanno, and Takashi Mori. "Pointer conversion method for synchronous digital hierarchy." Electronics and Communications in Japan (Part I: Communications) 78, no. 6 (June 1995): 45–53. http://dx.doi.org/10.1002/ecja.4410780604.

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15

Kunieda, T., S. Sugimoto, and N. Sasaki. "A synchronous digital hierarchy network management system." IEEE Communications Magazine 31, no. 11 (November 1993): 84–90. http://dx.doi.org/10.1109/35.256887.

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16

Cavati, C. "IA supported synchronous digital hierarchy transport network planning." International Transactions in Operational Research 6, no. 4 (July 1999): 365–75. http://dx.doi.org/10.1016/s0969-6016(99)00003-9.

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17

Romao Cavati, C. "IA supported synchronous digital hierarchy transport network planning." International Transactions in Operational Research 6, no. 4 (July 1999): 365–75. http://dx.doi.org/10.1111/j.1475-3995.1999.tb00161.x.

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18

Owen, Henry, and Thomas Klett. "Synchronous Digital Hierarchy statistical simulation of pointer activity." Computer Communications 16, no. 12 (December 1993): 759–66. http://dx.doi.org/10.1016/0140-3664(93)90052-t.

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19

Owen, Henry L., and Carston Wulf-Mathies. "Synchronous Digital Hierarchy Optical Metropolitan Network Ring Traffic Analysis." European Transactions on Telecommunications 4, no. 6 (November 1993): 591–97. http://dx.doi.org/10.1002/ett.4460040608.

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20

Matthews, Mark, and Peter Newcombe. "The synchronous digital hierarchy. Part 2: Survival of the fittest." IEE Review 37, no. 6 (1991): 229. http://dx.doi.org/10.1049/ir:19910109.

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21

Oei, W. S., and S. Tamboli. "International fixed satellite systems in synchronous digital hierarchy transport networks." International Journal of Satellite Communications 10, no. 5 (September 1992): 251–59. http://dx.doi.org/10.1002/sat.4600100509.

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22

Rokugo, Yoshinori, and Norio Yoshida. "Jitter reduction for asynchronous network application of synchronous digital hierarchy." Electronics and Communications in Japan (Part I: Communications) 76, no. 5 (1993): 23–32. http://dx.doi.org/10.1002/ecja.4410760503.

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23

Asatani, K., K. R. Harrison, and R. Ballart. "CCITT standardization of network node interface of synchronous digital hierarchy." IEEE Communications Magazine 28, no. 8 (August 1990): 15–20. http://dx.doi.org/10.1109/35.58880.

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24

Hassan, Rosilah, James Irvine, and Ian Glover. "Design and Analysis of Virtual Bus Transport Using Synchronous Digital Hierarchy/Synchronous Optical Networking." Journal of Computer Science 4, no. 12 (December 1, 2008): 1003–11. http://dx.doi.org/10.3844/jcssp.2008.1003.1011.

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25

Shafi, M., L. Davey, and W. Smith. "The impact of synchronous digital hierarchy on digital microwave radio: a view from Australasia." IEEE Communications Magazine 28, no. 5 (May 1990): 16–20. http://dx.doi.org/10.1109/35.54343.

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26

Billionnet, Alain, Sourour Elloumi, and Leila Grouz Djerbi. "Designing radio-mobile access networks based on synchronous digital hierarchy rings." Computers & Operations Research 32, no. 2 (February 2005): 379–94. http://dx.doi.org/10.1016/s0305-0548(03)00242-9.

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27

Matthews, Mark, and Peter Newcombe. "The synchronous digital hierarchy. Part 1: The origin of the species." IEE Review 37, no. 5 (1991): 185. http://dx.doi.org/10.1049/ir:19910087.

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28

Imaoka, A., and M. Kihara. "Time signal distribution in communication networks based on synchronous digital hierarchy." IEEE Transactions on Communications 45, no. 2 (1997): 247–53. http://dx.doi.org/10.1109/26.554373.

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29

Sholander, Peter E., Chris B. Autry, and Henry L. Owen. "Effects of fixed frequency clock offsets in synchronous digital hierarchy networks." European Transactions on Telecommunications 7, no. 1 (January 1996): 49–60. http://dx.doi.org/10.1002/ett.4460070106.

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30

Sholander, Peter E., and Henry L. Owen. "Methodology and Results of Synchronous Digital Hierarchy Network Payload Jitter Simulation." SIMULATION 64, no. 1 (January 1995): 34–41. http://dx.doi.org/10.1177/003754979506400105.

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31

Doherty, Dennis, and David Redberg. "Achieving interoperability in synchronous digital hierarchy network management through RM-ODP." Computer Standards & Interfaces 35, no. 3 (March 2013): 348–53. http://dx.doi.org/10.1016/j.csi.2011.12.003.

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32

Barbosa de Sousa, Aminadabe, Alberto Sampaio Lima, Jose Neuman de Souza, Jose Antao Beltrao Moura, and Antonio Carlos Barros Silva. "Business Risk-based Redundancy Points Identification in Synchronous Digital Hierarchy Optical Networks." IEEE Latin America Transactions 16, no. 8 (August 2018): 2254–60. http://dx.doi.org/10.1109/tla.2018.8528243.

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33

HEALY, EILEEN M. "SONET: SYNCHRONOUS OPTICAL NETWORK STANDARDS." International Journal of High Speed Electronics and Systems 01, no. 02 (June 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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34

Owen, Henry L. "Synchronous digital hierarchy byte pointer justification versus VC-12 payload bit justification effects." European Transactions on Telecommunications 6, no. 1 (January 1995): 97–105. http://dx.doi.org/10.1002/ett.4460060114.

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35

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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36

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 (November 1993): 623–28. http://dx.doi.org/10.1002/ett.4460040611.

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37

Singh, Maninder, and Maninder Lal Singh. "A novel algorithm to integrate synchronous digital hierarchy networks into Optical Transport Network using mixed line rates." Optik 125, no. 22 (November 2014): 6739–45. http://dx.doi.org/10.1016/j.ijleo.2014.08.062.

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38

Balcer, R., J. Eaves, J. Legras, R. McLintock, and T. Wright. "An overview of emerging CCITT Recommendations for the synchronous digital hierarchy: multiplexers, line systems, management, and network aspects." IEEE Communications Magazine 28, no. 8 (August 1990): 21–25. http://dx.doi.org/10.1109/35.58881.

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39

Musakin, E. Yu, O. I. Atakishchev, and B. V. Klujkov. "Application of Grammars with β-Controlled Precursor for Solving the Problems of Structural and Linguistic Signal Recognition in Synchronous Digital Hierarchy." Telecommunications and Radio Engineering 62, no. 1-6 (2004): 509–14. http://dx.doi.org/10.1615/telecomradeng.v62.i6.20.

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40

Chen, Yinfang, Rong Wang, Tao Fang, Tao Pu, Peng Xiang, Huatao Zhu, and Jilin Zheng. "Stealth transmission of temporal phase en/decoded polarization-modulated-code-shift-keying optical-code-division multiple-access signal over synchronous digital hierarchy network with asynchronous detection." Optical Engineering 53, no. 6 (June 13, 2014): 066103. http://dx.doi.org/10.1117/1.oe.53.6.066103.

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41

Хаджиева, Л. К., and М. Л. Сатуева. "ANALYSIS OF THE USE OF TECHNOLOGY SYNCHRONOUS DIGITAL HIERARCHY SDH." Вестник ГГНТУ. Технические науки, no. 2(16) (September 25, 2019). http://dx.doi.org/10.34708/gstou.2019.16.2.008.

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Ввиду быстрого прогресса в современных технологиях и огромной потребности в увеличении пропускной способности для использования современных средств требуется более сложная топология сети для обеспечения лучшего качества обслуживания (QoS). Эти требования, в свою очередь, предполагают высокую точность проектирования и совершенство метода синхронизации. Целью данного исследования является решение способа преодоления вышеуказанной проблемы путем реализации сети синхронной цифровой иерархии (SDH) для обеспечения и измерения QoS. Для каждого поставщика услуг это непростая задача удовлетворить спрос клиента. Сеть SDH развивалась, поскольку сеть PDH не поддерживает такие функции, как мультиплексирование более высокого порядка, обеспечивая лучшее качество обслуживания (QoS), топологии сети, отличные от линейных, и сложность с добавлением мультиплексирования с отбрасыванием и т.д. SDH может поддерживать QoS лучше, чем PDH. Конфигурация SDH выполняется для реализации, а проблемы проектирования анализируются для будущего решения. Измерение QoS выполняется для измерения производительности сети. Due to rapid advances in modern technology and the huge need for increased bandwidth, the use of modern facilities requires a more complex network topology to provide better quality of service (QoS). These requirements, in turn, imply high accuracy of design and perfection of synchronization methods. The aim of this study is to solve a way to overcome the above problem by implementing a synchronous digital hierarchy (SDH) network to provide and measure QoS. For each service provider, it is not an easy task to meet customer demand. The SDH network has evolved because the PDH network does not support features such as higher order multiplexing, providing better quality of service (QoS), network topologies other than linear, and complexity with the addition of drop multiplexing, etc. SDH can support QoS better than PDH. The configuration is performed for the SDH implementation as problems of design analyses for future decisions. The QoS measurement is performed to measure network performance.

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42

Yumin, Syamsul El, and R. Hartono. "EVALUASI KINERJA OPERASIONAL JARINGAN KOMUNIKASI SERAT OPTIK LAMPUNG-DUMAI SUMATERA INLAND BACKBONE LINK." Sainstech: Jurnal Penelitian dan Pengkajian Sains dan Teknologi 22, no. 2 (June 6, 2020). http://dx.doi.org/10.37277/stch.v22i2.612.

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Lampung-Dumai backbone link consisted of 11 sublinks is the optical fiber communication networks(OFCN) system using the technology of Synchronous Digital Hierarchy (SDH) multiplexing with the transmissionspeed of 2,5 Gbps or STM-16 with the bit-error-rate of 10 -11 . Since 2007 the performance network, such as theoperasional bit-error-rate, transmission data capacity, the availability and reliability, has not yet been evaluated.This paper reports the results of the network performance evaluated by recalculating and remeasuring the powerlink budget to know the total losses of system affecting the operational bit-error-rate, and the rise-time budget toknow the transmission data capacity. And also, the the availability and reliability of system was investigated. Theevaluation result shows that there are 4 of 11 sublinks where its measured attenuation values are bigger than thedesigned value, hence increasing the operasional bit-error-rate in those links. However overall, the availabilityand the reliability can still be achieved 99, 5% and 99,99%, respectively, as the ITU-T standards and G.652recommendation.

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43

Bulanov, Vladimir, Tatiana Bulanova, and Vladimir Trusonoshin. "Software complex for finding the path routings in synchronous digital hierarchy networks." Science and Education of the Bauman MSTU 14, no. 02 (February 3, 2014). http://dx.doi.org/10.7463/0214.0698921.

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