<Tr> <Td> <Ul> <Li> </Li> <Li> </Li> <Li> </Li> </Ul> </Td> </Tr> <Ul> <Li> </Li> <Li> </Li> <Li> </Li> </Ul> <P> Software - defined radio (SDR) is a radio communication system where components that have been traditionally implemented in hardware (e.g. mixers, filters, amplifiers, modulators / demodulators, detectors, etc .) are instead implemented by means of software on a personal computer or embedded system . While the concept of SDR is not new, the rapidly evolving capabilities of digital electronics render practical many processes which used to be only theoretically possible . </P> <P> A basic SDR system may consist of a personal computer equipped with a sound card, or other analog - to - digital converter, preceded by some form of RF front end . Significant amounts of signal processing are handed over to the general - purpose processor, rather than being done in special - purpose hardware (electronic circuits). Such a design produces a radio which can receive and transmit widely different radio protocols (sometimes referred to as waveforms) based solely on the software used . </P>

Difference between software defined radio and software implemented radio
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