What problem is your research into wireless technology trying to address?
The problem is interference. Right now the airspace is full of lots of people trying to communicate over the 2.4GHz band, which is used for Wi-Fi. Our goal is to design a smart antenna that can zero in on a desired signal and reject the others. We're designing software-defined radios that work with the access-point antennas to optimize the signal-to-noise ratio.
So the software will try to optimize the transmission between your computer and the access point wherever it is while also minimizing what you're receiving from other computers. The access point would focus itself on one radio at a time. Access points are typically "dumb" in that they radiate some power in all directions at once. So when one computer has a weaker signal or different polarization, a smart antenna could adjust the polarization and would form a beam directly to the laptop it wanted to talk to.
Coping with Wi-Fi's biggest problem: interference
Wouldn't this necessarily degrade the quality of signal being sent to other laptops in the area?
The access point would do this very quickly, and actually it would take less time dealing with each radio one at a time than trying to push out data to them all at once. It'll be far less likely that you'll have to retransmit something or have a frame error in your transmission if you do it this way.
So tell me a bit about what the smart antenna lab does
This isn't a unique setup by any means but it is expensive to set up and a lot of companies don't have this capability. So if they have a product they want to test they can come to our place and do it here. We can even give them an idea of what they might have to do to get their product to meet FCC guidelines.
When do you hope to have the lab up and running?
Hopefully by next spring. We're modifying the room now and finalizing decisions about what equipment to buy. This lab will be open to local companies and nearby universities that want to collaborate on research as well, so they can use it to test equipment and they won't have to buy it themselves. We've gotten a lot of support from local industry and we couldn't have done it without them.
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This story, "How 'Smart Antennas' Could Boost Wi-Fi Performance" was originally published by Network World.