DSB-SC AM based software defined radio(SDR) design

The rapid growth in speed and density of programmable logic devices such as FPGA's (Field Programmable Gate Arrays) facilitates ever more complex designs to be built within a short time frame. The adjustability of a programmable device makes it easy to integrate a design with variety of peripherals or components on a single chip and makes it versatile. Implementation of a highly realized and efficient programmable digital DSB-SC (Double Side Band Suppressed Carrier) AM (Amplitude Modulation) modem on ARTIX-7 FPGA has been done for mastering towards the Software Defined Radio (SDR) application. Since DSB-SC is an analog modulation scheme, carrying out it in the digital domain introduces new challenges. The goal of this paper is to make out simulation and implement DSB-SC scheme on FPGA. Since FPGA is well suited for real time algorithms we choose it as platform for implementation. MATLAB R2012a is used for simulating the DSB-SC modulation and demodulation algorithms, and ARTIX-7 FPGA is used as implementation platform with Xilinx ISE 14.7 System Generator. The output waveforms are displayed and approved using Xilinx Chip Scope Pro.