The Software Defined Radio (SDR) is a term for describing the reconfigurable digital signal processing based communication systems. In SDR based systems most of the baseband processing is done in a reconfigurable digital processor. This feature leads to greater flexibility in these systems and permit them to reconfigure their baseband processing behavior just with a click!
The SDR based communication systems are growing in past years very quickly. SDR Brings many new motivations and features that can’t be achieved in legacy communication systems. The features like high stability over the mass production and generalized use of hardware’s makes them a good choice for new designs and low cost production.
Elonics E4000, Spartan-3, Spartan-6, W5300
For more detail, go to http://www.jahandar.ir/esdr-a-software-radio-receiver-peripheral/