Gigabit Ethernet
Cat 5 Transceiver 
IEEE 802.3z
July 1996 Plenary Meeting

Charlie Hochstedler
Lucent Technologies


Gigabit Ethernet 4 Pair Cat 5 Transceiver
Brief Review
SDE suggested a possible approach 3/96
split passband
2D 9x9 code for < 30 MHz
2D 2x2 code for 30 to 100 MHz
Lucent suggested a second approach 5/96
not split passband
2D 3x3 code for < 100 MHz


Gigabit Ethernet 4 Pair Cat 5 Transceiver
2D 3x3 Progress (Simulations)
Half duplex
100 m worst case Cat 5
10 E-10 BER, with margin
Full duplex
100 m worst case Cat 5
10 E-10 BER, with margin
with NEXT and echo cancellers


Gigabit Ethernet 4 Pair Cat 5 Transceiver
Next Steps
Evaluate alternative code/modulation schemes
Look for lowest cost to implement in silicon
Report progress at next interim meeting