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Software-Defined Radio (SDR)

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Software-Defined Radio (SDR) is a radio communication system where traditional hardware components such as mixers, filters, amplifiers, and modulators/demodulators are replaced with software algorithms running on a computer or embedded system. Introduced in the late 1980s, SDR allows for the flexible and reconfigurable implementation of radio protocols and radio standards, enabling users to transmit, receive, and process radio signals across a wide range of frequencies and modulation schemes. SDR systems typically consist of a radio frequency (RF) front end that digitizes analog signals, followed by digital signal processing (DSP) components implemented in software to perform modulation/demodulation, filtering, encoding/decoding, and other signal processing tasks. SDR offers advantages such as versatility, interoperability, and adaptability, making it widely used in applications such as military communications, wireless networks, amateur radio, and spectrum monitoring. s://en.wikipedia.org/wiki/Software-defined_radio

Software-defined radio

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