Trasmition of 40GBase- T and 100Gbase-T over category 7A copper cables Steven Fratello
Jan 03, 2016
Trasmition of 40GBase-T and 100Gbase-T over category 7A
copper cablesSteven Fratello
Need
• Copper wires are only useful for short distance transmitions
• Alien talk often disrupts the signal on a copper cable
• Fext
• Next
Need
www.cisco.com/en/US/products/hw/optical/ps201...Increase in network traffic 1996-2001
Knowledge base
Knowledge baseCAT 7(ISO Class F)600 MHz1.2 GHz in pairs with Siemon connector Full-motion videoTeleradiologyGovernment and manufacturing environmentsFully Shielded (S/FTP) system using non-RJ45 connectors but backwards compatible with hybrid cords.Until February 2008, the only standard (published in 2002) to support 10GBASE-T for a full 100m.
Kavehrad 07
• it is possible to extend the length of category 7 copper cables from 70 meters to 100 meters (Kavehrad 07)
Enteshari/Kavhrad 09
Tranmition at 40Gbase-T is practical at lengths up to 50 meters
Transmition at 100GBase-T can be practical at lengths up to 10 meters
Viterbri decoder • “1. Branch metric calculation – calculation of a distance between the input pair of bits and
the
• four possible “ideal” pairs (“00”, “01”, “10”, “11”). • 2. Path metric calculation – for every encoder state, calculate a metric for the survivor path
• ending in this state (a survivor path is a path with the minimum metric). • 3. Traceback – this step is necessary for hardware implementations that don't store full
• information about the survivor paths, but store only one bit decision every time when one
• survivor path is selected from the two.”
• Encoded stream > branch metric calculation> path metric calculation> Traceback> decoded stream
Purpose
• To Determine the distances which 100Gbase- T is more practical than 40Gbase-T.
Hypothesis
Alternate hypothesis- The 100Gbase over the copper cable will be more practical than the cable transporting 40Gbase in short distances
Null Hypothesis- The 40Gbase transmition over the copper cable is always more practical
Do Ability
• Very doable
• Most info can be recorded on a computer
• Only the copper cables are needed
Protocols
• Data is sent from one computer to another
• Computer receiving the data would record how much data is received
• Data will be run through the viterbri decoder
Budget
• Vendor Object Price
• Nexans Category 7A copper $19.55
• cable 200 meters
Methodology • Category 7A cables
• 40GBase- run through 100GBase-T • Copper cable run through copper cable
Signal strength recorded on receiving computer
Data run through Viterbri decoder
Data statistically analyzed on spss
Bibliography
• http://www.ieee802.org/3/10GBT/public/nov03/kavehrad_1_1103.pdfpgs 1-34. 2003
• Researchers Push transmission Rate of copper Cables• Ultrafast Home Network Possible by Using Separate
Optical Fibers • • http://www.ieee802.org/3/hssg/public/nov07/
kavehrad_01_1107.pdf 1-21 2007• http://www.nexans.us/US/2009/DC09_paper.pdf 1-16 Ali
Entashari, Mohsenkaverad • K. Seki, et. al., Performance Evaluation of Low-Latency
LDPC Code, IEEE 802.3• 10GBASE-T Study Group Interim Meeting, July 2004.