CTS-Session-05-CmOpTrns - Optical Communication...

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Unformatted text preview: Optical Communication LT/DCTS-05/1010 1 of 32 Transmission System SDH • Fiber optics components are assembled into system to provide communication transmission services. • Copper, wireless and fiber play different roles in the global network. • Optical networking manages signals as light and Optical Networking LT/DCTS-05/1010 2 of 32 transmitted the light. • Communication networks are made of transmission links between nodes. • Standards define common languages for signal transmission • Major standards IP, SONET/SDH, PDH. Evolution • Optical Communication Transmission System evolution: s PDH – Plesiochronous Digital Hierarchy DH Synchronous Digital Hierarchy and LT/DCTS-05/1010 3 of 32 s SDH Synchronous Digital Hierarchy and SONET Synchronous Optical Network s WDM Wave Division Multiplexing/DWDM Dense Wave Division Multiplexing s GE Gigabit Ethernet (for computer networks). Base Stream • Transmission of digitized voice using Pulse Code Modulation: s Voice Frequency ranges upto 4 Khz s Sampling the Voice Signal @ 8 Khz (Double the Max. Frequency) s 8 bits per sample LT/DCTS-05/1010 4 of 32 s Digital Bit Rate: 8Khz X 8 = 64 Kbps • Basic stream called E1 consists of: s 30 Voice Channels @ 64 Khz s One channel for Frame (64 K) s One channel for Signaling (64 K) s Total number of Channels = 32 s Bit Rate: 32 X 64 K= 2048 Khz (2Mb) PDH Bit Rates • E1-2048 Kbps (2Mb) [30 Voice Channel] • E2-8448 Kbps (8Mb) [120 Voice Channel] LT/DCTS-05/1010 5 of 32 • E3-34368 Kbps (34Mb) [480 Voice Channel] • E4-139264 Kbps (140Mb) [1920 Voice Channel] PDH Hierarchy LT/DCTS-05/1010 6 of 32 •...
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This note was uploaded on 11/14/2011 for the course COMPUTER E H0704 taught by Professor Lukas during the Spring '11 term at Bina Nusantara University.

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CTS-Session-05-CmOpTrns - Optical Communication...

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