Software defined radio. A radio in a mobile communications environment whose channel modulation waveforms are defined in software. That is, waveforms are generated as sampled digital signals, converted from digital to analog, and then upconverted to RF. The receiver, similarly, employs a wideband analog to digital converter (ADC) that captures all of the channels of the software radio node. The receiver then extracts, downconverts, and demodulates the channel waveform using software on a general purpose processor. Return
Sometimes shortened to software radio (SR), SDR refers to wireless communication in which the transmitter modulation is generated or defined by a computer, and the receiver uses a computer to recover the signal intelligence. SDR allows network operators to simultaneously support multiple communications standards on one network infrastructure without begin bound by a particular standard.
(software-defined radio) is a radio communication system that uses software to control a variety of modulation techniques, wide-band or narrow-band operation, communications security functions and waveform requirements of current and evolving standards over a broad frequency range.