I have been interested in software radio for some time now but lack the technical knowledge to understand it fully. Can someone point me to links that can help me understand this ? I am sure it will be helpful to many people.<p>From what I have read one needs a Universal Software Radio Peripheral (USRP) for sending and receiving radio signals but searching for this leads to things like daughter boards etc. which I did not understand.<p>Can someone explain it here ?<p>Thanks