1 / 17

Transmission Media Sharing

Transmission Media Sharing. When can you share? High Medium capacity Why share ? Less transmission costs More cost-effective transmissions How would you share? Multiplexing. Multiplexing vs. No Multiplexing. Multiplexer. Types of Multiplexing. Frequency Division Multiplexing (FDM)

ilya
Download Presentation

Transmission Media Sharing

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. Transmission Media Sharing • When can you share? • High Medium capacity • Why share ? • Less transmission costs • More cost-effective transmissions • How would you share? • Multiplexing

  2. Multiplexing vs. No Multiplexing

  3. Multiplexer

  4. Types of Multiplexing • Frequency Division Multiplexing (FDM) • Wave Division Multiplexing (WDM) • Time Division Multiplexing (TDM) • Synchronous • Asynchronous (Statistical TDM)

  5. Frequency Division Multiplexing • Analog signaling & transmission. • Total bandwidth = sum of input bandwidths + guard bands. • Modulates signals to different frequency • Uses • Radio broadcasting and television

  6. FDM - Multiplexer

  7. FDM - Demultiplexer

  8. TDM - Synchronous

  9. TDM - Asynchronous

  10. Inverse Multiplexing • Takes data stream from one high speed line & breaks it into portions that can be sent over multiple lower speed lines simultaneously.

  11. Multiplexing and Inverse Multiplexing

  12. Analog Services • Analog switched • Dial- up, voice networks • PSTN – Public Switched Telephone Network • Analog Leased • Conditioned Lines

  13. Multiplexing Efficiency • Multiplex signals from lower bandwidth into high bandwidth lines • Many analog lines into fewer bigger channels • FDM used • Hierarchical structure

  14. Analog Hierarchy

  15. Digital Service • Less sensitive to interference • 3 Types Digital Service • Switched/56 Service • DDS - Digital Data Service • DS Digital Signal Service

  16. DS Hierarchy

  17. DS • T Lines are Digital Lines for Digital Transmission to deliver DS Service. • T1 = DS-1 = 1.544Mbps • T2 = DS-2 = 6.312Mbps • T3 = DS-3 = 44.736Mbps • T4 = DS-4 = 274.176Mbps

More Related