SMT-8036 based Implementation of Secured Software Defined Radio system for Adaptive Modulation Technique

Abstract

With the exponential growth in the ways and means by which people need to communicate data communications, voice communications, video communications, broadcast messaging, command and control communications, emergency response communications, etc. modifying radio devices easily and cost-effectively has become critical. The future information age is equipped with rich and affordable telecommunication services. So in future people will be more flexible while using the wireless equipments. Wireless communications systems and standards have been developed around the world without any global plan. Recently hardware technology evolved significantly. Some of the key milestones in this progress are transition from analog hardware to digital hardware and then introduction of sophisticated processors. This is followed by the development of Software Defined Radio (SDR) structures and virtual hardware that are under development currently. Software Defined Radio (SDR) system is a useful and adaptable future-proof solution to cover both existing and emerging standards, it provides elements with re-configurability, intelligence and software programmable hardware. Moreover, it has capability of providing global seamless connectivity and solves the interoperability issue. In this thesis we have implemented different digital modulation techniques on SMT-8036 kit which has a DSP (TMS320C6416) and FPGA (VIRTEX I and VIRTEX II) processors. We are using multiple processors because FPGA give faster output than DSP processor. So if we implement Receiver which has more complexity than Transmitter on FPGA then it will give results faster than DSP. We are doing this by using concept of Threads and Task division for faster execution of program. We are also interested to design SMT-8036 based implementation of secured Software Defined Radio system for adaptive modulation technique in which transmitter changes its modulation scheme after 10 sec and receiver dynamically change the parameters of receiver chain and detects the transmitter’s modulation scheme and demodulate signal accordingly.