Software-defined radio (SDR) is a radio communication system where components traditionally implemented in analog hardware, such as mixers, filters, and modulators, are instead implemented using software on a personal computer or embedded system. In an SDR, the properties of the radio, such as carrier frequency, signal bandwidth, modulation, and network access, are defined by software]. SDR software takes the broadband signal provided by the SDR device and displays, filters, and decodes it into usable signals. SDRs are highly flexible and versatile, and they can be used for a wide range of wireless applications.