Technology
SES Broadband uses a satellite link to carry IP data in both directions between the central hub and remote terminals. At the hub, routers connect to the Internet backbone and IP data is embedded in a DVB-S2 format carrier to be uplinked to the satellite from SES' teleport and, from there, downlinked to the remote terminal where the signal is received with a domestic-type dish for the satellite internet modem, which extracts the IP data for the end user's PC.
The return path is handled in a similar fashion, but with a low power 500 mW transmitter on each terminal dish providing the uplink to the satellite, with multiple-frequency time division multiple access techniques employed to handle many remote terminals simultaneously. SES Broadband combines 2 standards for the return path: Satmode for modulation and coding and DVB-RCS for the access scheme.
The central hub and terminal technology is developed by a Belgian company called Newtec.
SES Broadband uses the Astra 3B communications satellite at the 23.5° east orbital position to handle uplinks and downlinks in both directions. A number of transponders are used for the hub-to-terminal downlink in the satellite TV downlink segment of the Ku band (10.70 GHz-12.75 GHz). The terminal-to-hub uplink to the satellite uses the uplink segment of the Ku band (14.00 GHz-14.50 GHz) and extended Ku band (13.75 GHz-14.25 GHz)
Read more about this topic: SES Broadband
Famous quotes containing the word technology:
“Radio put technology into storytelling and made it sick. TV killed it. Then you were locked into somebody else’s sighting of that story. You no longer had the benefit of making that picture for yourself, using your imagination. Storytelling brings back that humanness that we have lost with TV. You talk to children and they don’t hear you. They are television addicts. Mamas bring them home from the hospital and drag them up in front of the set and the great stare-out begins.”
—Jackie Torrence (b. 1944)
“Technology is not an image of the world but a way of operating on reality. The nihilism of technology lies not only in the fact that it is the most perfect expression of the will to power ... but also in the fact that it lacks meaning.”
—Octavio Paz (b. 1914)