|
Network Speeds
|
nominal
speed |
UDP |
TCP/IP |
|
| cellphone |
to 38.4 kbps |
|
10 kbps |
"handy" in Europe |
| V.34 |
56 kbps |
|
30 kbps |
modem |
| ISDN |
64 kbps/ch |
|
50 kbps/ch |
ISDN |
| cable, DSL |
~1.5 Mbps |
|
500 kbps |
"broadband" |
| Bluetooth |
to 1 Mbps |
|
|
~30 feet |
| T1 |
1.5 Mbps |
|
|
24 channels |
| E1 |
2 Mbps |
|
|
"Euro T1" 32 channels |
| 2 GHz UMTS "3G" |
2 Mbps |
|
~60 kbps |
"gouge-o-matic" |
| Ricochet |
128 kbps |
|
~60 kbps |
900 MHz |
| D2B |
5.6 Mbps |
|
|
car fiber, 1992+ |
| 5.9 GHz DSRC |
6 Mbps/ch |
3.4/ch |
2.7/ch |
inter-vehicle, ~600 ft/hop |
| ethernet |
10 Mbps |
| 2.4 GHz 802.11b |
11 Mbps |
7.1 |
5.9 |
Wi-Fi, wireless ethernet |
| 2.4 GHz 802.11g |
11 Mbps |
16.9 |
11.8 |
in development |
| 10-66 GHz 802.16 |
70 Mbps |
|
7 over 12 mi |
WiMAX wireless broadb. |
| MOST |
25 Mbps |
|
|
car fiber, 2002+ |
| T3 |
45 Mbps |
|
|
past net backbone |
| OC-1 |
52 Mbps |
|
|
slowest fiber, not used |
| 5.9 GHz 802.11a |
<54 Mbps |
30.9 |
24.4 |
Driveby InfoFueling |
| fast ethernet |
100 Mbps |
| OC-3 |
155 Mbps |
150 |
120 |
| OC-12 |
622 Mbps |
600 |
470 |
present net backbone |
| record over 6800 mi |
923 Mbps |
|
923 |
Stanford-Amsterdam |
| gigabit ethernet |
1 Gbps |
|
|
Telseon, Yipes |
| HDTV |
1.2 Gbps |
|
|
uncompressed video |
| MOST x 50 |
1.25 Gbps |
|
|
automobile glass fiber |
| OC-48 |
2.5 Gbps |
2.4 |
1.9 |
telco backbone |
| OC-192 |
10 Gbps |
9.6 |
7.5 |
popular, e.g. Qwest |
| fast gigabit ethernet |
10 Gbps |
|
|
|
|
| OC-48 with WDM |
40 Gbps |
|
|
wave division multiplexed |
| OC-768 |
40 Gbps |
|
|
"NExt step" |
| OC-3072 |
160 Gbps |
|
|
"Duh, that's pretty fast" |
| OC-768 w DWDM |
6.4 Tbps |
|
|
e.g. Enkido |
| DWDM |
10 Tbps |
|
|
in development |
| glass fiber |
75 Tbps |
|
|
fiber capacity |
kbps: Kilo bits per second 1,000 bps
Mbps: Mega bits per second 1,000,000 bps
Gbps: Giga bits per second 1,000,000,000 bps
Tbps: Tera bits per second 1,000,000,000,000 bps
Pbps: Peta bits per second 1,000,000,000,000,000 bps
Ebps: Exa bits per second 1,000,000,000,000,000,000 bps
Zbps: Zetta bits per second 1,000,000,000,000,000,000,000 bps
Ybps: Yotta bits per second 1,000,000,000,000,000,000,000,000 bps
With Wave Division Multiplexing (WDM), using different optical
wavelengths, the fiber bandwith can be increased by a factor of about 16.
"Narrowband dinosaurs" are deploying WDM since it is less expensive than
laying more fiber.
Dense Wave Division Multiplexing (DWDM) uses
high-Q laser photons with single lambda bandwidth, limited only by the
uncertainty principle discovered by Werner Heisenberg, allowing up to
10,000 adjacent channels within the amplifier gain!
last update Feb 2003
WH Networks
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