International Journal of Computer Applications
Telecommunication systems, with the support of digital technology had proven their efficiency in the world market. Digital processors had given rise to a new invention called Software Defined Radio which allows dynamic programming of the radio equipment i.e. A flexible architecture whose behavior is dependent on the software behind it and not only on its hardware. It reflects the convergence of two dynamic technologies: Digital radio and Real-time downloadable software. Runtime download also give rise to some security issues such as unauthorized modification of the software, customizing the software and misusing it, resulting in radio malfunction. In this paper the origin of the SDR technology along with its basic principle of operation, download mechanisms and the supporting technologies has been discussed.