What are software-defined radios (SDR) known for?

Software-defined radios (SDR) are known for employing software for signal processing, which is the core characteristic that distinguishes them from traditional radio systems. Unlike conventional radios that rely heavily on hardware components for tasks such as filtering, modulation, and demodulation, SDRs leverage digital signal processing algorithms implemented through software. This allows for greater flexibility and adaptability, as users can update and modify the radio's functionality by simply changing the software. The ability to support multiple frequencies and protocols without the need for extensive hardware changes makes SDRs particularly valuable in dynamic environments where adaptability is crucial.

In contrast, reliance on analog signal processing denotes traditional radio devices, which utilize fixed hardware components for their operations. While hardware-based functions are inherent in SDR systems initially, the primary strength lies in their ability to process signals through software rather than being entirely reliant on the hardware architecture. This clearly highlights why employing software for signal processing is central to the definition and functionality of SDRs.