Re: [Discuss-gnuradio] Active Cancellation

2010-06-21 Thread jan acosta
Well it depends, on the problem. If you have a radio that is transmitting in the same channel as another radio, then you can directly feed one to the noise channel and receive the other at the antenna. I know in radio astronomy people have been using this technique to cancel interference from the

Re: [Discuss-gnuradio] Active Cancellation

2010-06-21 Thread Kunal Kandekar
I am not aware of any previous work of this type, but it's interesting. Out of curiosity, how would you make sure the second channel does not include the signal as well? To cancel out noise, both receivers would need to be relatively close to each other to receive the same noise, which means they w

[Discuss-gnuradio] Active Cancellation

2010-06-21 Thread sirjanselot
Hey guys, Has anyone ever tried to make an active canceller using the USRP radios? Basically what I would like to do is use the USRP radio to receive two channels, one which has the noise and the other has the same noise + a signal of interest. The goal is to use an algorithm that finds the coe