ABSTRACT
In this paper, we present a modeling of transmission lines performed under real-world conditions to compare them with a theoretical transfer function. This model is based on the practical case of implementation for access networks "last mile" in rural areas, designed and implemented by National Telecommunication Corporation (CNT-Ecuador) at Azuay-Ecuador. In this sense, we review some theoretical concepts on evolution over time in xDSL technologies implemented by the company CNT-Ecuador. Then, we perform several field data analyses using measuring instruments, where electrical parameters were obtained with which we perform the modeling. In addition, it was realized an analysis and comparison of the obtained real capacities of transmission lines, against the theoretical ones by means of the Theorem of Shannon-Hertly for lines with VDSL technology. Into the outdoor tests and simulations, the data obtained allowed us to drastically correct the transfer functions of the lines in poor condition, through varying the most impacting electrical parameters.
We present the results in a table with the ranges of the parameters that can be taken as reference so that a pair of copper wires operating in poor condition in rural areas, can work correctly with VDSL technology.
- A. Begović, N. Škaljo, and N. Behlilović, "An example of modeling local loop transfer function in DSL environment," Proc. Elmar - Int. Symp. Electron. Mar., no. September, pp. 247--252, 2014.Google Scholar
- A. Begovic, N. Skaljo, and N. Goran, "An example of estimation of twisted pair channel capacity in DSL environment," 2013 1st Int. Conf. Commun. Signal Process. Their Appl. ICCSPA 2013, 2013.Google Scholar
- A. J. P. Porto, "Definicion de ADSL," 2015.Google Scholar
- B. D. Rauschmayer, "Adsl / Vdsl Principles: A Practical and Precise Study of Asymmetric Digital Subscriber Lines and Very High Speed Digital Subscriber Lines (Macmillan Technology Series)," pp. 1--2, 1998.Google Scholar
- B. Laboratories, "Effect of Bridged Taps on Channel Capacity at VDSL Frequencies," vol. 0, 2005.Google Scholar
- B. T. Impact, "Loop Analysis using DSL Data," 2014.Google Scholar
- E. Jones and E. Jones, "Introduction to DSL," History, 2006.Google Scholar
- F. C. Villacís, M. R. Sotomayor, L. V. Mosquera, and Y. Flores, "'Medicion, Instrumentación Y Preparación Para Redes Xdsl,'" 2015.Google Scholar
- F. Mazzenga and R. Giuliano, "Log-Normal Approximation for VDSL Performance Evaluation," IEEE Trans. Commun., vol. 64, no. 12, pp. 5266--5277, 2016.Google Scholar
- G. Frantz, "D Igital S Ignal P Rocessor Trends," IEEE Micro, vol. 69, no. 2, pp. 52--59, 2000.Google ScholarDigital Library
- Huawei, «Copper Good for 100 Years» xDSL Evolution, USA, 2012.Google Scholar
- J. A.C, "Multicarrier modulation," pp. 1--25, 2013.Google Scholar
- J. H. Van Wyk and L. P. Linde, "COMPARISON OF THEORETICAL MODELS WITH PRACTICE FOR," no. 9, pp. 1023--1026, 2004.Google Scholar
- J.-J. W. Amanda Wang, «Effect of Bridge Taps on Channel Capacity at VDSL Frequencies» The University of British Columbia, Bell Laboratories, Holmdel, NJ, USA.Google Scholar
- J. V Leggett and B. H. Incorporated, "TWISTED PAIR DATA BUS CABLE," vol. 1, no. 12, 1998.Google Scholar
- J. V. W. a. L. Linde, «Comparison of Theorical Models with Practice for ADSL».Google Scholar
- M. Ernelli, «Loop Qualification for VDSL2» XR-EE-KT 2008:3, Stockholm, Sweden, April 2008.Google Scholar
- M. R. a. a. Franklin Chenche Villacis, «Medición, Instrumentación y Preparación para Redes xDSL,» Escuela Superior Politécnica del Litoral, Guayaquil, Ecuador, 2009.Google Scholar
- N. S. N. B. Alen Begovic, «An Example of Modeling Local Loop Transfer Fuction in DSL Environment» University of Sarajevo, Faculty of Electrical Engineering, Zenica, Bosnia-Herzegovina.Google Scholar
- O. Access, "Servicios de Banda Ancha para el Sector Residencial y MiPyMes sobre una Red IP con Acceso ADSL-Edición Única Campus Ciudad de México Escuela de Graduados en Ingeniería y Arquitectura Tesis Servicios de banda ancha para el sector residencial y MiPyMes sobr," 2007.Google Scholar
- R. F. Stockel and P. E. H. Lander, "CUSTOlVIER PRENIISES ADSL SIGNAL DISTRIBUTION ARRANGEMENT," pp. 2--7, 1984.Google Scholar
- R. No, T. D. Compagnia, P. Italiana, S. Rapporto, and M. I. Roma, "Single -Enden Subcriber Loop Qualification for xDSL Service," 1994.Google Scholar
- S. TELECOMUNICACIONES, «Pruebas en xDSL,» Publication in Sitie Web, 2012.Google Scholar
- S. Y. R. Digitales, "UIT-T," 2006.Google Scholar
Index Terms
- Parameter Analysis of an Existing Copper Access Network for the Optimization of VDSL Service in Rural Areas
Recommendations
An all-optical wavelength-division meshed-ring packet-switching network
INFOCOM '95: Proceedings of the Fourteenth Annual Joint Conference of the IEEE Computer and Communication Societies (Vol. 3)-Volume - Volume 3Introduces an all-optical wavelength-division packet-switching meshed-ring local/metropolitan area communication network. This architecture, known as SMARTNet (scalable multi-channel adaptable ring terabit network), allows the proposed network to offer ...
Full service optical access networks: ATM transport on passive optical networks
Multimedia communication has become the driving force for installing broadband systems in the public network. Different alternative solutions have been presented to realize a broadband interactive access network, such as installing optical fiber or ...
Partial crosstalk precompensation in downstream VDSL
Signal processing in communicationsVery high bit-rate digital subscriber line (VDSL) is the latest generation in the ongoing evolution of DSL standards. VDSL aims at bringing truly broadband access, greater than 52 Mbps in the downstream, to the mass consumer market. This is achieved by ...
Comments