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.