Software-defined radio (SDR) may be a sort of radio communication system where the components are traditionally implemented in hardware.

Some of the examples of Software-defined radio are mixers, filters, amplifiers, modulators/demodulators, detectors.

These are implemented by means of software on a private computer or embedded system. The SDR concept isn’t a new one.

Software radio feature is a big utility for military and telephone services, both of which must serve as an honest kind of changing radio protocols in real time.

Growing Use of Software-Defined Radio Technologies

Software-defined radio (SDR) is a Radio Frequency communication approach where the most signal processing tasks are done using software or firmware technologies instead of dedicated radio chips.

SDR is the most complicated radio technique where it needs advanced software development, hence not all wireless solutions currently incorporate this method in their design.

From a user’s perspective, SDR-based technologies accompany great benefits in terms of customization. Easily implemented on existing and future off-the-shelf IT hardware, modifications or improvements within the wireless system functionality are often conveniently executed via software upgrades at the gateways/base stations. The Software defined Radio approaches the same hardware platform that’s based IoT gateways to support multiple frequency bands and radio protocols to unravel the deployment while providing backward compatibility with legacy radio equipment within the field.

The emergence of latest wireless protocols and standards in 2020 and SDR technologies will quickly gain traction, fueling scalability and interoperability of the IoT architecture.

Today’s SDR, in contrast, could even be a general-purpose device during which an equivalent radio tuner and processors implement many waveforms at many frequencies. The advantage of this approach is that the equipment is more versatile and price effective. Additionally, it is often upgraded with new software for brand fresh waveforms and new applications after sale, delivery, and installation. Following the programmable modem, AFRL and DARPA joined forces to fund the SPEAK easy-I and SPEAK easy-II programs.


  1. HackRF One
  2. ADALM Pluto.
  3. RTL-SDR.

SDR in Mobile

Software-defined radio (SDR) is one among the foremost important wireless communication technologies. It’s a singular sort of radio system which will tune to any waveband.

RTL-SDR dongles- It easily performs the function of an SDR receiver using an Android smartphone with the help of on-the-go that is OTG support.

Applications for SDR

Nowadays, SDR can be considered as a displacing technology which is in its early implementation stages in the commercial wireless and civil government markets.

  • Integration of wireless medical devices 
  • Cognitive radio for body area networks
  • Wireless sensor networks for medical environmental surveillance.
  • Military Radio
  • Cellular service providers
  • Reduced deployment cost.