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Telecomunicaciones

Telecomunicaciones. Ing. Juan J. Salas Fukutake 2014. Contenido. Bases y antecedentes. Breve historia Elementos Ondas El E spectro Electromagnético Señales Analógicas y Digitales (Modulación) Técnicas de Acceso La red de telefonía móvil Las redes de fibra óptica El futuro Preguntas.

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Telecomunicaciones

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  1. Telecomunicaciones Ing. Juan J. Salas Fukutake 2014

  2. Contenido Bases y antecedentes. Breve historia Elementos Ondas El Espectro Electromagnético Señales Analógicas y Digitales (Modulación) Técnicas de Acceso La red de telefonía móvil Las redes de fibra óptica El futuro Preguntas

  3. Antecedentes Filípides recorre 240 km desde Atenas hasta Esparta portando un mensaje de ayuda.

  4. TELECOMUNICACIÓN Comunicar a distancia

  5. Un poco de historia

  6. Elementos

  7. Ondas Una onda es una perturbación que viaja por un medio transmitiendo energía de un lugar a otro.

  8. Espectro electromagnético 1 Hz = un ciclo por segundo

  9. Espectro Electromagnético

  10. Modulación

  11. Señales Analógicas y Digitales

  12. Técnicas de Acceso (Multiplex) FDM: FrecuencyDivisionMultiplexing TDM: Time DivisionMultiplexing CDM: CodeDivisionMultiplexing WDM: WavelengthDivisionMultiplexing

  13. Red de Telefonía (PSTN)

  14. Coverage and Capacity Mobile communications networks are designed for both area coverage and capacity for expected voice and data calls.

  15. Network of Cell Sites Networks are made up of sites serving areas called cells. This may be shown as a honeycomb pattern but in practice cell shapes are not regular.

  16. Cell Area Depends on Geography and Calls Antennas must be near users. The size of each cell is dependent on the number of calls, the physical terrain and the frequency of operation.

  17. Cell Sites Served by Base Stations Each antenna site or base station consists of a mast or existing building to support the antennas and associated transmission and network equipment.

  18. The Mobile Switching Centre Connects Calls Base stations are connected to a mobile switching centre where a call is connected to another mobile or fixed phone or the Internet.

  19. Handover Between Cells while Moving As a mobile moves the call is passed between neighbouring cells, a process called handover. If there are gaps in the coverage the call could be dropped.

  20. Network Changed in Response to User Needs As the number of users grows the larger cells will be divided into smaller sizes. As the cell size decreases, so also does the transmit power.

  21. Red de Telefonía Móvil Ideal Real

  22. Diseño de celdas Utilizando software especializado podemos simular la propagación de señales de cada radiobase y los niveles de señal en cada zona de la ciudad.

  23. Fibras Ópticas Usando la luz como portadora

  24. ¿Cómo funciona? Aprovechando los fenómenos de reflexión y refracción de luz, esta viaja a través de un conducto de vidrio muy delgado llevando la información de un lado a otro.

  25. FTTH Fiber to the home

  26. Telepresencia

  27. ¿Ciencia Ficción?

  28. ¿El Futuro?

  29. ¿PREGUNTAS?

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