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Could We Beam Broadband Internet Into Iran?
abenamer writes "Some reporter at a recent White House press briefing just asked the White House press secretary, Robert Gibbs, this question: Was 'the White House....considering beaming broad capability into Iran via satellite so the opposition forces would be able to communicate with themselves and the outside world?' 'Gibbs said he didn't know such a thing was possible. (Is it?) But he said he would check on the technological feasibility and get back with an answer.' I'm not sure what the reporter meant by beaming broadband into Iran: Do they even have 3G? Would we bomb the Iranians with SIM cards that would allow them to get text messages from the VOA? Or somehow put up massive Wi-Fi transmitters from Iraq and beam it into Iran? How would you beam broadband into Iran?"
Getting a signal TO them is easy. You just have to set up a source with sufficient power. Satellite, ground, shortwave, whatever. I think it would be feasible (I'm not radio guru) to beam them FM from space or Iraq. Basiclly you'd be breaking all the transmit power limits to further your cause.
The problem with networking is they don't have any devices powerful enough to beam the return signal BACK to us. Sure, we can broadcast them a packet 1000 miles away, but their hardware only has the power to return it 1 mile back... Yeah, you can tweak the sensitivity of your receiving equip, but not enough for this. And the idea of cells is that you are counting on a signal only reaching a certain distance, so you can reuse that frequency in another location. Even if they all put 100,000 watt amplifiers on their wifi cards, on our end it's just jumbled garbage.
By the time we got any hardware to them to let them communicate with us, this revolution will be over... R&D, Procurement, Distribution...
Do not meddle in the affairs of sysadmins, for they are subtle, and quick to anger.
There are two possible technologies (among other similar ones)
With DVB-S2/RCS you have a bidirectional satellite system that requires a 1.2 meter dish antenna and a satellite terminal composed of an indoor unit (about the size of a bulky cable-modem) and an outdoor unit (transmitter and receiver horn mounted on the focus point of the satellite dish. This costs around US$1000 dollars and it takes about 30min to install (if you are an experienced installer).
With BGAN you have a very portable terminal (about the size of a netbook) that only requires you to point it in the general vicinity of the satellite location in the horizon.
Both systems use GEO (geostationary) satellites, which means that they have a fixed location in the horizon. They are actually located over the equator (0Â latitude) and they orbit the earth in 24h cycles, thus appearing to be stationary.
With DVB-S2/RCS you can have a 50Mbit/s in the downlink, although most services provide less than 10Mbit/s. The usually upload speed is 1Mbit/s. This speeds are shared between all terminals within a beam (similar to Internet over cable, where you share your Internet within a residential area of about 1000 persons).
With BGAN you only have 492Kbit/s in both the downlink and uplink. On the other hand, it is designed for mobility.
Fear is the mind-killer.
The Tor project has taken it upon themselves to help out the resistance in Iran. They have instructions to setup Iran only Tor bridges to provide secure/anonymous internet access to and from Iran.
https://blog.torproject.org/blog/measuring-tor-and-iran
Too bad the press isn't paying attention to the (very successful) efforts by the Tor project in helping out the people of Iran get communications in and out of Iran. No need for the White House to do anything, the good folks and volunteers at Tor are taking care of it in a much more practical way.
Also, whoever wrote this article/said that comment has no idea about physics and technology. Some of the comments here talking about how unbelievably implausible "beaming broadband" into Iran is are very funny.
You can't just throw internet into a country.... not in any practical way anyways, especially from a satellite without proper ground equipment.
You might need a lesson in history.
It goes from God, to Jerry, to me.