I'm clueless about the underlying legalities/politics, so was wondering: could something like this be used to provide connectivity in an area without 4G (but with an Internet connection)? In other words, could I (an average Joe) set up my own "cellular hot spot" and offer a better quality signal to people in the neighborhood?
As the documentation says, all the processing from physical to protocol layers is done by the PC. Could anyone experienced in wireless technologies explain what is the software radio frontend worth 2000$ actually doing?
A USRP costs almost $2,000 because it is completely general-purpose, modular, and customizable. It's more flexible than you really need, but if you're doing a one-off project it's cheaper than designing a custom radio.
I'm clueless about the underlying legalities/politics, so was wondering: could something like this be used to provide connectivity in an area without 4G (but with an Internet connection)? In other words, could I (an average Joe) set up my own "cellular hot spot" and offer a better quality signal to people in the neighborhood?
Basically no. All the spectrum that phones can use is already owned by various companies.
As the documentation says, all the processing from physical to protocol layers is done by the PC. Could anyone experienced in wireless technologies explain what is the software radio frontend worth 2000$ actually doing?
A USRP costs almost $2,000 because it is completely general-purpose, modular, and customizable. It's more flexible than you really need, but if you're doing a one-off project it's cheaper than designing a custom radio.
so right now the only use of it is to get the raw packets from ethernet, convert to analog with required power and just release it over the metal? I may be wrong here.. not an RF expert
I thought the frequencies necessary for LTE in the US are licensed exclusively to carriers? Or does LTE tolerate different networks on the same frequency?
Fabrice Bellard is in France AFAIK (not that it really makes any difference).
Who says the carriers and their suppliers aren't his target customers?
It is also possible to do some experimentation without a license.
I thought the frequencies necessary for LTE in the US are licensed exclusively to carriers? Or does LTE tolerate different networks on the same frequency?
You're right. This would be in violation of FCC regulation as it would interfere with a pre-existing network at 2600 MHz.
The guys is french living in France for a french company. I doubt he cares about FCC regulations.
Not sure what your comment means. Did you want a software EM field?
I was referring to http://bellard.org/dvbt/
You can't generate an electromagnetic field just from software!! At some point you need a physical medium to accomplish that. In the case you point out he uses the DAC hardware on a graphics card to generate electric signals, controlled by software. Not really sure what you meant.
I like the model Fabrice uses. He picks really meaty, technical projects which most individuals would not attempt alone, if they even think the project is possible. And he comes up with the goods. It would be interesting to know if this model works... umm financially. Very tempting to give it a try if it does.
The reason the average HN-goer never does anything of note is precisely because of being driven by this "how can I monetize this" mentality alone.
Getting paid is a proxy for doing something society actually wants (rather than paying lip service to) and brings the resources to make it self-sustaining. I'm torn because I find society's wants (at least around my calling) to be largely fickle and shallow, but if I disregard them it's mere self-gratification.