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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
- Snippet from Wikipedia: Software-defined radio
Software-defined radio (SDR) is a radio communication system where components that conventionally have been implemented in analog hardware (e.g. mixers, filters, amplifiers, modulators/demodulators, detectors, etc.) are instead implemented by means of software on a computer or embedded system. While the concept of SDR is not new, the rapidly evolving capabilities of digital electronics render practical many processes which were once only theoretically possible.
A basic SDR system may consist of a 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.
Software radios have significant utility for the military and cell phone services, both of which must serve a wide variety of changing radio protocols in real time. In the long term, software-defined radios are expected by proponents like the Wireless Innovation Forum to become the dominant technology in radio communications. SDRs, along with software defined antennas are the enablers of cognitive radio.
Research More
- SDR on Amazon.com
- SDR on DuckDuckGo
- Software-Defined Radio for Archive Access for Fair Use Preservation, quoting, paraphrasing, excerpting and/or commenting upon
Software-Defined Networking (SDN): SDN Bibliography, Awesome SDN. (navbar_sdn, see also navbar_networking
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